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Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2016	Apr. 29, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	Emergent BioSolutions Inc.
Entity Central Index Key	0001367644
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		40,060,773
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 341,016	$ 312,795
Accounts receivable, net	69,560	120,767
Inventories	88,200	76,936
Income tax receivable, net	3,771	6,573
Prepaid expenses and other current assets	25,613	20,339
Total current assets	528,160	537,410
Property, plant and equipment, net	342,083	331,856
In process research and development	42,501	42,501
Intangible assets, net	55,010	57,375
Goodwill	54,902	54,902
Deferred tax assets, net	11,124	11,286
Other assets	2,117	2,154
Total assets	1,035,897	1,037,484
Current liabilities:
Accounts payable	45,611	45,966
Accrued expenses and other current liabilities	4,187	6,229
Accrued compensation	26,528	34,683
Contingent consideration, current portion	2,580	2,553
Provision for chargebacks	1,960	2,238
Deferred revenue	9,589	7,942
Total current liabilities	90,455	99,611
Contingent consideration, net of current portion	23,114	23,046
Long-term indebtedness	247,192	246,892
Deferred revenue, net of current portion	6,817	6,590
Other liabilities	1,337	1,328
Total liabilities	368,915	377,467
Stockholders' equity:
Preferred stock, $0.001 par value; 15,000,000 shares authorized, 0 shares issued and outstanding at both March 31, 2016 and December 31, 2015	0	0
Common stock, $0.001 par value; 100,000,000 shares authorized, 40,257,241 shares issued and 39,834,411 shares outstanding at March 31, 2016; 39,829,408 shares issued and 39,406,578 shares outstanding at December 31, 2015	40	40
Treasury stock, at cost, 422,830 common shares at March 31, 2016 and December 31, 2015	(6,420)	(6,420)
Additional paid-in capital	322,384	317,971
Accumulated other comprehensive loss	(4,152)	(2,713)
Retained earnings	355,130	351,139
Total stockholders' equity	666,982	660,017
Total liabilities and stockholders' equity	$ 1,035,897	$ 1,037,484

Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	15,000,000	15,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	40,257,241	39,829,408
Common stock, shares outstanding (in shares)	39,834,411	39,406,578
Treasury stock ( in shares)	422,830	422,830

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues:
Product sales	$ 71,706	$ 18,291
Contract manufacturing	7,587	12,243
Contracts, grants and collaborations	31,709	33,099
Total revenues	111,002	63,633
Operating expenses:
Cost of product sales and contract manufacturing	28,503	18,748
Research and development	34,154	38,702
Selling, general and administrative	39,784	34,493
Income (loss) from operations	8,561	(28,310)
Other income (expense):
Interest income	186	82
Interest expense	(1,524)	(1,661)
Other income, net	116	100
Total other expense, net	(1,222)	(1,479)
Income (loss) before provision for (benefit from) income taxes	7,339	(29,789)
Provision for (benefit from) income taxes	3,348	(8,269)
Net income (loss)	$ 3,991	$ (21,520)
Net income (loss) per share - basic	$ 0.10	$ (0.57)
Net income (loss) per share-diluted	$ 0.10	$ (0.57)
Weighted-average number of shares - basic (in shares)	39,542,656	37,949,358
Weighted-average number of shares - diluted (in shares)	48,359,892	37,949,358

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements of Comprehensive Income (Loss) (Unaudited) [Abstract]
Net income (loss)	$ 3,991	$ (21,520)
Foreign currency translations, net of tax	(1,439)	(234)
Comprehensive income (loss)	$ 2,552	$ (21,754)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ 3,991	$ (21,520)
Adjustments to reconcile to net cash provided by (used in) operating activities:
Stock-based compensation expense	5,197	3,798
Depreciation and amortization	8,840	8,532
Income taxes	2,964	(7,261)
Change in fair value of contingent consideration	847	1,559
Excess tax benefits from stock-based compensation	(5,786)	(5,414)
Other	71	17
Changes in operating assets and liabilities:
Accounts receivable	51,207	(5,225)
Inventories	(11,264)	(16,460)
Income taxes	(4,376)	(12,160)
Prepaid expenses and other assets	(5,555)	(249)
Accounts payable	385	1,102
Accrued expenses and other liabilities	(2,045)	(1,641)
Accrued compensation	(8,277)	(10,883)
Provision for chargebacks	(278)	(82)
Deferred revenue	1,874	14
Net cash provided by (used in) operating activities	37,795	(65,873)
Cash flows from investing activities:
Purchases of property, plant and equipment	(18,214)	(9,082)
Net cash used in investing activities	(18,214)	(9,082)
Cash flows from financing activities:
Issuance of common stock upon exercise of stock options	3,595	6,344
Excess tax benefits from stock-based compensation	5,786	5,414
Contingent obligation payments	(752)	(762)
Net cash provided by financing activities	8,629	10,996
Effect of exchange rate changes on cash and cash equivalents	11	(25)
Net increase (decrease) in cash and cash equivalents	28,221	(63,984)
Cash and cash equivalents at beginning of period	312,795	280,499
Cash and cash equivalents at end of period	$ 341,016	$ 216,515

Summary of significant accounting policies	3 Months Ended
Summary of significant accounting policies	Mar. 31, 2016
Summary of significant accounting policies [Abstract]
Summary of significant accounting policies	1. Summary of significant accounting policies Basis of presentation and consolidation On August 6, 2015, Emergent BioSolutions Inc. (the "Company" or "Emergent"), announced its plan to separate into two independent publicly-traded companies, one a biotechnology company focused on novel oncology and hematology therapeutics to meaningfully improve patients' lives and the other a global specialty life sciences company focused on providing specialty products for civilian and military populations that address intentional and naturally emerging public health threats. In accordance with the separation plan, Emergent expects to spin off certain assets and liabilities of its biosciences business into Aptevo Therapeutics Inc. ("Aptevo") a wholly-owned subsidiary of Emergent that was incorporated in February 2016. In anticipation of the planned spin-off, the Company realigned certain components of its biosciences business to the new Aptevo segment to be consistent with how the Company's chief operating decision maker ("CODM") allocates resources and makes decisions about the operations of the Company. Effective January 1, 2016, the Company changed its segment presentation to reflect this new structure, and recast all prior periods presented to conform to the new presentation. Upon separation, the historical results of Aptevo will be reported as discontinued operations. The accompanying unaudited consolidated financial statements include the accounts of Emergent and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The unaudited consolidated financial statements included herein have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X issued by the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2015, as filed with the SEC. In the opinion of the Company's management, any adjustments contained in the accompanying unaudited consolidated financial statements are of a normal recurring nature, and are necessary to present fairly the financial position of the Company as of March 31, 2016; the results of operations and comprehensive income (loss) for the three months ended March 31, 2016 and 2015; and cash flows for the three months ended March 31, 2016 and 2015. Interim results are not necessarily indicative of results that may be expected for any other interim period or for an entire year. During the three months ended March 31, 2016, there have been no significant changes to the Company's summary of significant accounting policies contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2015, as filed with the SEC.

Fair value measurements

3 Months Ended

Mar. 31, 2016

Fair value measurements [Abstract]

Fair value measurements

2. Fair value measurements

The following table represents the Company's fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis:

	March 31, 2016
(in thousands)		Level 1		Level 2		Level 3		Total
Assets:
Investment in money market funds (1)		$	234	$	-	$	-	$	234
Total assets		$	234	$	-	$	-	$	234

Liabilities:
Contingent consideration		$	-	$	-	$	25,694	$	25,694
Total liabilities		$	-	$	-	$	25,694	$	25,694

	December 31, 2015
(in thousands)		Level 1		Level 2		Level 3		Total
Assets:
Investment in money market funds (1)		$	3,323	$	-	$	-	$	3,323
Total assets		$	3,323	$	-	$	-	$	3,323

Liabilities:
Contingent consideration		$	-	$	-	$	25,599	$	25,599
Total liabilities		$	-	$	-	$	25,599	$	25,599

(1) Included in cash and cash equivalents in the accompanying consolidated balance sheets.

During the three months ended March 31, 2016, the Company did not have any transfers between Level 1 and Level 2 assets or liabilities.

The fair value of contingent consideration obligations are based on management's assessment of certain development and regulatory milestones, along with updates in the assumed achievement of potential future net sales for the EV-035 series of molecules and the broad spectrum antiviral platform program, which are inputs that have no observable market (Level 3). For the three months ended March 31, 2016 and 2015, the contingent consideration obligation increased by $0.1 million and $0.8 million, respectively. These changes are primarily due to the novation of the DTRA contract for the EV-035 series of molecules along with the estimated timing and probability of success for certain development and regulatory milestones and the estimated timing and volume of potential future sales of EV-035 series of molecules and the broad spectrum antiviral platform. For the three months ended March 31, 2016, $0.1 million of the adjustment was recorded in the Company's statement of operations as a charge to research and development expense. For the three months ended March 31, 2015, $0.3 million and $0.5 million of the adjustment was recorded in the Company's statement of operations as a charge to selling, general and administrative expense and research and development expense, respectively.

The fair value of the RSDL and HepaGam contingent consideration obligations changed as a result of management's assessment of adjustments to the discount rates and updates in the assumed and actual achievement of future net sales, which are inputs that have no observable market (Level 3). For each of the three month periods ended March 31, 2016 and 2015, the contingent purchase consideration obligations increased by $0.8 million. The increases are primarily due to an adjustment to the actual and expected timing and volume of RSDL and HepaGam B sales. These changes are classified in the Company's statement of operations as cost of product sales and contract manufacturing.

The following table is a reconciliation of the beginning and ending balance of the liabilities measured at fair value using significant unobservable inputs (Level 3) during the three months ended March 31, 2016.

(in thousands)
Balance at December 31, 2015	$	25,599
Expense included in earnings		847
Settlements		(752	)
Purchases, sales and issuances		-
Transfers in/(out) of Level 3		-
Balance at March 31, 2016	$	25,694

Separate disclosure is required for assets and liabilities measured at fair value on a recurring basis from those measured at fair value on a non-recurring basis. During the three months ended March 31, 2016 and 2015, the Company had no assets or liabilities that were measured at fair value on a nonrecurring basis.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Inventories

3 Months Ended

Mar. 31, 2016

Inventories [Abstract]

Inventories

3. Inventories

Inventories consisted of the following:

	March 31,		December 31,
(in thousands)	2016		2015
Raw materials and supplies	$	25,710	$	23,099
Work-in-process		42,352		37,209
Finished goods		20,138		16,628
Total inventories	$	88,200	$	76,936

Intangible assets, in-process research and development and goodwill

3 Months Ended

Mar. 31, 2016

Intangible assets and in-process research and development [Abstract]

Intangible assets, in-process research and development and goodwill

4. Intangible assets and in-process research and development

As of March 31, 2016, $41.8 million of IPR&D assets related to the Company's otlertuzumab product candidate is included in the Aptevo segment.

On April 29, 2015, the FDA approved IXINITY for the treatment of Hemophilia B. As a result of the approval, the $8.3 million IXINITY IPR&D asset was reclassified to intangible assets in the Company's consolidated balance sheets and is being amortized over a 10 year period from the approval date.

Intangible assets consisted of the following:

	Biodefense			Aptevo
(in thousands)	Segment			Segment			Total
Cost basis
Balance at December 31, 2015	$	55,790		$	20,809		$	76,599
Additions		-			-			-
Balance at March 31, 2016	$	55,790		$	20,809		$	76,599

Accumulated amortization
Balance at December 31, 2015	$	(15,857	)	$	(3,368	)	$	(19,225	)
Amortization		(1,779	)		(585	)		(2,364	)
Balance at March 31, 2016	$	(17,636	)	$	(3,953	)	$	(21,589	)

Net balance at March 31, 2016	$	38,154		$	16,856		$	55,010

Amortization expense consisted of the following:

	Three Months Ended March 31,
(in thousands)	2016		2015

Biodefense segment	$	1,779	$	1,763
Aptevo segment		585		379
Total amortization expense	$	2,364	$	2,142

As of March 31, 2016, the weighted average amortization period remaining for intangible assets in the Biodefense and Aptevo segments was 83 and 94 months, respectively.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Equity awards

3 Months Ended

Mar. 31, 2016

Equity awards [Abstract]

Equity awards

6. Equity awards

As of March 31, 2016, the Company had two stock-based employee compensation plans, the Third Amended and Restated Emergent BioSolutions Inc. 2006 Stock Incentive Plan (the "2006 Plan") and the Emergent BioSolutions Employee Stock Option Plan (the "2004 Plan"). The Company refers to both plans together as the "Emergent Plans".

The following is a summary of stock option award activity under the Emergent Plans:

	2006 Plan					2004 Plan
	Number of Shares			Weighted-Average Exercise Price		Number of Shares			Weighted-Average Exercise Price		Aggregate Intrinsic Value
Outstanding at December 31, 2015		2,964,237		$	22.73		29,699		$	10.28	$	52,119,607
Granted		391,158		$	33.83		-		$	-
Exercised		(178,124	)	$	18.47		(29,699	)	$	10.28
Forfeited		(12,742	)	$	25.48		-		$	-
Outstanding at March 31, 2016		3,164,529		$	24.33		-		$	-	$	38,049,150
Exercisable at March 31, 2016		1,951,044		$	21.12		-		$	-	$	29,719,065

The following is a summary of restricted stock unit award activity under the 2006 Plan:

	Number of Shares			Weighted-Average Grant Price		Aggregate Intrinsic Value
Outstanding at December 31, 2015		889,004		$	26.86	$	35,569,048
Granted		427,592		$	33.83
Vested		(353,117	)	$	24.70
Forfeited		(9,599	)	$	30.06
Outstanding at March 31, 2016		953,880		$	30.75	$	34,673,539

Long-term debt	3 Months Ended
Long-term debt	Mar. 31, 2016
Long-term debt [Abstract]
Long-term debt	5. Long-term debt In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), which simplifies the presentation of debt issuance costs. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. Prior to the issuance of ASU 2015-03, debt issuance costs were required to be presented as an asset on the balance sheet. ASU 2015-03 is effective for interim and annual periods beginning after December 15, 2015. For the year ended December 31, 2015, the Company reclassified debt issuance costs of $1.2 million and $4.9 million from prepaid expenses and other current assets and other assets as a reduction to long-term debt, respectively.

Earnings per share

3 Months Ended

Mar. 31, 2016

Earnings per share [Abstract]

Earnings per share

7. Earnings per share

The following table presents the calculation of basic and diluted net loss per share utilizing the if-converted method:

	Three Months Ended March 31,
(in thousands, except share and per share data)	2016		2015
Numerator:
Net income (loss)	$	3,991	$	(21,520	)
Interest expense, net of tax		716		-
Amortization of debt issuance costs, net of tax		215		-
Net income (loss), adjusted	$	4,922	$	(21,520	)

Denominator:
Weighted-average number of shares—basic		39,542,656		37,949,358
Dilutive securities—equity awards		1,096,711		-
Dilutive securities—convertible debt		7,720,525		-
Weighted-average number of shares—diluted		48,359,892		37,949,358

Net income (loss) per share-basic	$	0.10	$	(0.57	)
Net income (loss) per share-diluted	$	0.10	$	(0.57	)

For the three months ended March 31, 2016, basic earnings per share is computed by dividing net income by the weighted average number of shares of common stock outstanding during the period.

For the three months ended March 31, 2016, diluted earnings per share is computed using the "if-converted" method by dividing the net income adjusted for interest expense and amortization of debt issuance cost, both net of tax, associated with the Company's 2.875 convertible Senior notes due 2021 (the "Notes") by the weighted average number of shares of common stock outstanding during the period. The weighted average number of shares is adjusted for the potential dilutive effect of the exercise of stock options and the vesting of restricted stock units along with the assumption of the conversion of the Notes, at the beginning of the period.

For the three months ended March 31, 2015, basic and diluted earnings per share is computed by dividing net loss by the weighted average number of shares of common stock outstanding during the period. No adjustment to the net loss was computed under the "if-converted" method as the effect would have been anti-dilutive.

For the three months ended March 31, 2015, outstanding stock options to purchase approximately 5.1 million shares of common stock, along with 7.7 million shares related to the Company's convertible debt, were excluded from the calculation of diluted earnings per share.

Related party transactions	3 Months Ended
Related party transactions	Mar. 31, 2016
Related party transactions [Abstract]
Related party transactions	8. Related party transactions In November 2015, the Company entered into a consulting arrangement with a member of the Company's Board of Directors to provide assistance in connection with the planned spin-off of Aptevo. The maximum compensation under the agreement is $0.1 million per year. The consulting agreement will terminate with the completion of the spin-off, at which time the member of the Board of Directors is expected to become the CEO of Aptevo.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

Segment information

3 Months Ended

Mar. 31, 2016

Segment information [Abstract]

Segment information

9. Segment information

On August 6, 2015, Emergent BioSolutions Inc. (the "Company" or "Emergent"), announced its plan to separate into two independent publicly-traded companies, one a biotechnology company focused on novel oncology and hematology therapeutics to meaningfully improve patients' lives and the other a global specialty life sciences company focused on providing specialty products for civilian and military populations that address intentional and naturally emerging public health threats. In anticipation of the planned spin-off, the Company realigned certain components of its biosciences business to the new Aptevo segment. Effective January 1, 2016, the Company changed its segment presentation to reflect this new structure, and recast all prior periods presented to conform to the new presentation.

For financial reporting purposes, the Company reports financial information for two business segments: Biodefense and Aptevo. The Company's two business segments, or divisions, engage in business activities for which discrete financial information is provided to and resources are allocated by the chief operating decision maker. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. The Company's reportable segments offer different products, product candidates, manufacturing processes and services, development processes, sales and marketing processes, and are managed separately.

The Biodefense division consists of three business units: vaccines and therapeutics, medical devices and contract manufacturing. Revenues in this segment are primarily from sales of the Company's FDA-licensed product, BioThrax® (Anthrax Vaccine Adsorbed), to the U.S. government. The Aptevo division consists of one business unit: the discovery, development, commercialization and sale of novel oncology and hematology therapeutics. The "All Other" segment relates to the general operating costs of the Company and includes costs of the centralized services departments, which are not allocated to the other segments, as well as spending on activities that are not classified as Biodefense or Aptevo.

	Reportable Segments
(in thousands)	Biodefense			Aptevo			Total
Three Months Ended March 31, 2016
External revenue	$	102,969		$	8,033		$	111,002
Intersegment revenue (expense)		574			(574	)		-
Income (loss) from operations		23,016			(14,455	)		8,561
Total assets		925,125			110,772			1,035,897
Three Months Ended March 31, 2015
External revenue	$	52,147		$	11,486		$	63,633
Intersegment revenue (expense)		104			(104	)		-
Income (loss) from operations		(18,496	)		(9,814	)		(28,310	)
Total assets		799,017			118,828			917,845

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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+ Details

Summary of significant accounting policies (Policies)	3 Months Ended
Summary of significant accounting policies (Policies)	Mar. 31, 2016
Summary of significant accounting policies [Abstract]
Basis of presentation and consolidation	Basis of presentation and consolidation On August 6, 2015, Emergent BioSolutions Inc. (the "Company" or "Emergent"), announced its plan to separate into two independent publicly-traded companies, one a biotechnology company focused on novel oncology and hematology therapeutics to meaningfully improve patients' lives and the other a global specialty life sciences company focused on providing specialty products for civilian and military populations that address intentional and naturally emerging public health threats. In accordance with the separation plan, Emergent expects to spin off certain assets and liabilities of its biosciences business into Aptevo Therapeutics Inc. ("Aptevo") a wholly-owned subsidiary of Emergent that was incorporated in February 2016. In anticipation of the planned spin-off, the Company realigned certain components of its biosciences business to the new Aptevo segment to be consistent with how the Company's chief operating decision maker ("CODM") allocates resources and makes decisions about the operations of the Company. Effective January 1, 2016, the Company changed its segment presentation to reflect this new structure, and recast all prior periods presented to conform to the new presentation. Upon separation, the historical results of Aptevo will be reported as discontinued operations. The accompanying unaudited consolidated financial statements include the accounts of Emergent and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The unaudited consolidated financial statements included herein have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X issued by the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2015, as filed with the SEC. In the opinion of the Company's management, any adjustments contained in the accompanying unaudited consolidated financial statements are of a normal recurring nature, and are necessary to present fairly the financial position of the Company as of March 31, 2016; the results of operations and comprehensive income (loss) for the three months ended March 31, 2016 and 2015; and cash flows for the three months ended March 31, 2016 and 2015. Interim results are not necessarily indicative of results that may be expected for any other interim period or for an entire year. During the three months ended March 31, 2016, there have been no significant changes to the Company's summary of significant accounting policies contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2015, as filed with the SEC.

Fair value measurements (Tables)

3 Months Ended

Mar. 31, 2016

Fair value measurements [Abstract]

Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table represents the Company's fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis:

	March 31, 2016
(in thousands)		Level 1		Level 2		Level 3		Total
Assets:
Investment in money market funds (1)		$	234	$	-	$	-	$	234
Total assets		$	234	$	-	$	-	$	234

Liabilities:
Contingent consideration		$	-	$	-	$	25,694	$	25,694
Total liabilities		$	-	$	-	$	25,694	$	25,694

	December 31, 2015
(in thousands)		Level 1		Level 2		Level 3		Total
Assets:
Investment in money market funds (1)		$	3,323	$	-	$	-	$	3,323
Total assets		$	3,323	$	-	$	-	$	3,323

Liabilities:
Contingent consideration		$	-	$	-	$	25,599	$	25,599
Total liabilities		$	-	$	-	$	25,599	$	25,599

(1) Included in cash and cash equivalents in the accompanying consolidated balance sheets.

Reconciliation of Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)

(in thousands)
Balance at December 31, 2015	$	25,599
Expense included in earnings		847
Settlements		(752	)
Purchases, sales and issuances		-
Transfers in/(out) of Level 3		-
Balance at March 31, 2016	$	25,694

Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventories [Abstract]

Inventories

Inventories consisted of the following:

	March 31,		December 31,
(in thousands)	2016		2015
Raw materials and supplies	$	25,710	$	23,099
Work-in-process		42,352		37,209
Finished goods		20,138		16,628
Total inventories	$	88,200	$	76,936

Intangible assets, in-process research and development and goodwill (Tables)

3 Months Ended

Mar. 31, 2016

Intangible assets and in-process research and development [Abstract]

Intangible Assets

Intangible assets consisted of the following:

	Biodefense			Aptevo
(in thousands)	Segment			Segment			Total
Cost basis
Balance at December 31, 2015	$	55,790		$	20,809		$	76,599
Additions		-			-			-
Balance at March 31, 2016	$	55,790		$	20,809		$	76,599

Accumulated amortization
Balance at December 31, 2015	$	(15,857	)	$	(3,368	)	$	(19,225	)
Amortization		(1,779	)		(585	)		(2,364	)
Balance at March 31, 2016	$	(17,636	)	$	(3,953	)	$	(21,589	)

Net balance at March 31, 2016	$	38,154		$	16,856		$	55,010

Finite-lived Intangible Assets Amortization Expense

Amortization expense consisted of the following:

	Three Months Ended March 31,
(in thousands)	2016		2015

Biodefense segment	$	1,779	$	1,763
Aptevo segment		585		379
Total amortization expense	$	2,364	$	2,142

As of March 31, 2016, the weighted average amortization period remaining for intangible assets in the Biodefense and Aptevo segments was 83 and 94 months, respectively.

Equity awards (Tables)

3 Months Ended

Mar. 31, 2016

Equity awards [Abstract]

Option Award Activity

The following is a summary of stock option award activity under the Emergent Plans:

	2006 Plan					2004 Plan
	Number of Shares			Weighted-Average Exercise Price		Number of Shares			Weighted-Average Exercise Price		Aggregate Intrinsic Value
Outstanding at December 31, 2015		2,964,237		$	22.73		29,699		$	10.28	$	52,119,607
Granted		391,158		$	33.83		-		$	-
Exercised		(178,124	)	$	18.47		(29,699	)	$	10.28
Forfeited		(12,742	)	$	25.48		-		$	-
Outstanding at March 31, 2016		3,164,529		$	24.33		-		$	-	$	38,049,150
Exercisable at March 31, 2016		1,951,044		$	21.12		-		$	-	$	29,719,065

Restricted Stock Units Activity

The following is a summary of restricted stock unit award activity under the 2006 Plan:

	Number of Shares			Weighted-Average Grant Price		Aggregate Intrinsic Value
Outstanding at December 31, 2015		889,004		$	26.86	$	35,569,048
Granted		427,592		$	33.83
Vested		(353,117	)	$	24.70
Forfeited		(9,599	)	$	30.06
Outstanding at March 31, 2016		953,880		$	30.75	$	34,673,539

Earnings per share (Tables)

3 Months Ended

Mar. 31, 2016

Earnings per share [Abstract]

Summary of Basic and Diluted Net Income (Loss) per Share

The following table presents the calculation of basic and diluted net loss per share utilizing the if-converted method:

	Three Months Ended March 31,
(in thousands, except share and per share data)	2016		2015
Numerator:
Net income (loss)	$	3,991	$	(21,520	)
Interest expense, net of tax		716		-
Amortization of debt issuance costs, net of tax		215		-
Net income (loss), adjusted	$	4,922	$	(21,520	)

Denominator:
Weighted-average number of shares—basic		39,542,656		37,949,358
Dilutive securities—equity awards		1,096,711		-
Dilutive securities—convertible debt		7,720,525		-
Weighted-average number of shares—diluted		48,359,892		37,949,358

Net income (loss) per share-basic	$	0.10	$	(0.57	)
Net income (loss) per share-diluted	$	0.10	$	(0.57	)

Segment information (Tables)

3 Months Ended

Mar. 31, 2016

Segment information [Abstract]

Segment Information

	Reportable Segments
(in thousands)	Biodefense			Aptevo			Total
Three Months Ended March 31, 2016
External revenue	$	102,969		$	8,033		$	111,002
Intersegment revenue (expense)		574			(574	)		-
Income (loss) from operations		23,016			(14,455	)		8,561
Total assets		925,125			110,772			1,035,897
Three Months Ended March 31, 2015
External revenue	$	52,147		$	11,486		$	63,633
Intersegment revenue (expense)		104			(104	)		-
Income (loss) from operations		(18,496	)		(9,814	)		(28,310	)
Total assets		799,017			118,828			917,845

Fair value measurements (Details) - USD ($)

3 Months Ended

Mar. 31, 2016

Mar. 31, 2015

Dec. 31, 2015

Unobservable Input Reconciliation [Roll Forward]

Balance, beginning of period

$ 25,599,000

Expense included in earnings

847,000

Settlements

(752,000)

Purchases, sales and issuances

Transfers in/(out) of Level 3

Balance, end of period

25,694,000

Evolva Holding SA 035 & Broad Spectrum Antiviral Platform [Member]

Unobservable Input Reconciliation [Roll Forward]

Change in fair value of contingent obligations

100,000

$ 800,000

EV-035 & Broad Spectrum Antiviral Platform Research and Development [Member]

Unobservable Input Reconciliation [Roll Forward]

Change in fair value of contingent obligations

100,000

500,000

EV-035&Broad Spectrum Antiviral Platform Selling, General and Administrative Member [Member]

Unobservable Input Reconciliation [Roll Forward]

Change in fair value of contingent obligations

300,000

RSDL and HepaGam [Member]

Unobservable Input Reconciliation [Roll Forward]

Change in fair value of contingent obligations

789,000

$ 800,000

Fair Value, Measurements, Recurring [Member]

Assets:

Investment in money market funds (1)

^[1]

234,000

$ 3,323,000

Total assets

234,000

3,323,000

Liabilities:

Contingent consideration

25,694,000

25,599,000

Total liabilities

25,694,000

25,599,000

Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]

Assets:

Investment in money market funds (1)

^[1]

234,000

3,323,000

Total assets

234,000

3,323,000

Liabilities:

Contingent consideration

Total liabilities

Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]

Assets:

Investment in money market funds (1)

^[1]

Total assets

Liabilities:

Contingent consideration

Total liabilities

Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]

Assets:

Investment in money market funds (1)

^[1]

Total assets

Liabilities:

Contingent consideration

25,694,000

25,599,000

Total liabilities

$ 25,694,000

$ 25,599,000

[1]	Included in cash and cash equivalents in accompanying consolidated balance sheets

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventories [Abstract]
Raw materials and supplies	$ 25,710	$ 23,099
Work-in-process	42,352	37,209
Finished goods	20,138	16,628
Total inventories	$ 88,200	$ 76,936

Intangible assets, in-process research and development and goodwill (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cost Basis [Abstract]
Intangible Assets, Beginning Balance	$ 76,599,000
Additions	0
Intangible Assets, Ending Balance	76,599,000
Accumulated Amortization [Abstract]
Accumulated Amortization, Beginning Balance	(19,225,000)
Amortization	2,364,000	$ 2,142,000
Accumulated Amortization, Ending Balance	(21,589,000)
Net book value of intangible assets	55,010,000
Biodefense [Member]
Cost Basis [Abstract]
Intangible Assets, Beginning Balance	55,790,000
Additions	0
Intangible Assets, Ending Balance	55,790,000
Accumulated Amortization [Abstract]
Accumulated Amortization, Beginning Balance	(15,857,000)
Amortization	1,779,000	1,763,000
Accumulated Amortization, Ending Balance	$ (17,636,000)
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	83 months
Net book value of intangible assets	$ 38,154,000
Aptevo [Member]
Cost Basis [Abstract]
Intangible Assets, Beginning Balance	20,809,000
Additions	0
Intangible Assets, Ending Balance	20,809,000
Accumulated Amortization [Abstract]
Accumulated Amortization, Beginning Balance	(3,368,000)
Amortization	585,000	379,000
Accumulated Amortization, Ending Balance	$ (3,953,000)
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	94 months
Net book value of intangible assets	$ 16,856,000
Aptevo [Member] \| Otlertuzumab [Member]
Accumulated Amortization [Abstract]
Net book value of intangible assets	$ 41,800,000
Aptevo [Member] \| IXINITY product candidates [Member]
Accumulated Amortization [Abstract]
Net book value of intangible assets		$ 8,300,000

Equity awards (Details)	3 Months Ended
Equity awards (Details)	Mar. 31, 2016 USD ($) $ / shares shares
Stock Options Member [Member]
Aggregate Intrinsic Value [Abstract]
Outstanding, beginning of period \| $	$ 52,119,607
Outstanding, end of period \| $	38,049,150
Exercisable, end of period \| $	$ 29,719,065
2006 Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Restricted stock unit award activity [Roll Forward]
Outstanding, beginning of period (in shares) \| shares	889,004
Granted (in shares) \| shares	427,592
Vested (in shares) \| shares	(353,117)
Forfeited (in shares) \| shares	(9,599)
Outstanding, end of period (in shares) \| shares	953,880
Weighted-Average Grant Price [Roll Forward]
Outstanding, beginning of period (in dollars per share) \| $ / shares	$ 26.86
Granted (in dollars per share) \| $ / shares	33.83
Vested (in dollars per share) \| $ / shares	24.70
Forfeited (in dollars per share) \| $ / shares	30.06
Outstanding, end of period (in dollars per share) \| $ / shares	$ 30.75
Aggregate intrinsic value [Abstract]
Outstanding, beginning of period \| $	$ 35,569,048
Outstanding, end of period \| $	$ 34,673,539
2006 Plan [Member] \| Stock Options Member [Member]
Options outstanding [Roll Forward]
Outstanding, beginning of period (in shares) \| shares	2,964,237
Granted (in shares) \| shares	391,158
Exercised (in shares) \| shares	(178,124)
Forfeited (in shares) \| shares	(12,742)
Outstanding, end of period (in shares) \| shares	3,164,529
Exercisable, end of period (in shares) \| shares	1,951,044
Weighted-Average Exercise Price [Roll Forward]
Outstanding, beginning of period (in dollars per share) \| $ / shares	$ 22.73
Granted (in dollars per share) \| $ / shares	33.83
Exercised (in dollars per share) \| $ / shares	18.47
Forfeited (in dollars per share) \| $ / shares	25.48
Outstanding, end of period (in dollars per share) \| $ / shares	24.33
Exercisable, end of period (in dollars per share) \| $ / shares	$ 21.12
2004 Plan [Member] \| Stock Options Member [Member]
Options outstanding [Roll Forward]
Outstanding, beginning of period (in shares) \| shares	29,699
Granted (in shares) \| shares	0
Exercised (in shares) \| shares	(29,699)
Forfeited (in shares) \| shares	0
Outstanding, end of period (in shares) \| shares	0
Exercisable, end of period (in shares) \| shares	0
Weighted-Average Exercise Price [Roll Forward]
Outstanding, beginning of period (in dollars per share) \| $ / shares	$ 10.28
Granted (in dollars per share) \| $ / shares	0
Exercised (in dollars per share) \| $ / shares	10.28
Forfeited (in dollars per share) \| $ / shares	0
Outstanding, end of period (in dollars per share) \| $ / shares	0
Exercisable, end of period (in dollars per share) \| $ / shares	$ 0

Long-term debt (Details) $ in Millions	12 Months Ended
Long-term debt (Details) $ in Millions	Dec. 31, 2015 USD ($)
Amount of debt issuance costs in other assets, netted against long term debt [Member]
Long-Term Debt [Line Items]
Debt issuance costs	$ 4.9
Amount of debt issuance costs in prepaid and other current assets, netted against long term debt [Member]
Long-Term Debt [Line Items]
Debt issuance costs	$ 1.2

Earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net income (loss)	$ 3,991	$ (21,520)
Interest expense applicable to convertible debt, net of tax	716	0
Amortization of debt issuance costs, net of tax	215	0
Adjusted net income (loss)	$ 4,922	$ (21,520)
Denominator:
Weighted-average number of shares-basic (in shares)	39,542,656	37,949,358
Dilutive securities-equity awards (in shares)	1,096,711	0
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	7,720,525	0
Weighted-average number of shares-diluted (in shares)	48,359,892	37,949,358
Net income (loss) per share - basic	$ 0.10	$ (0.57)
Adjusted net (loss) income per share-diluted	$ 0.10	$ (0.57)
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from calculation (in shares)		5,100,000
Convertible debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from calculation (in shares)		7,700,000

Related party transactions (Details) $ in Millions	3 Months Ended
Related party transactions (Details) $ in Millions	Mar. 31, 2016 USD ($)
Related Party Transaction [Line Items]
Costs incurred from services rendered under marketing/consulting agreement	$ 0.1

Segment information (Details) $ in Thousands	3 Months Ended
Segment information (Details) $ in Thousands	Mar. 31, 2016 USD ($) Segment BusinessUnit	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of business segments \| Segment	2
External revenue	$ 111,002	$ 63,633
Income (loss) from operations	3,991	(21,520)
Total assets	1,035,897	917,845	$ 1,037,484
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
External revenue	0	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	$ 8,561	(28,310)
Biodefense [Member]
Segment Reporting Information [Line Items]
Number of business units \| BusinessUnit	3
External revenue	$ 102,969	52,147
Total assets	925,125	799,017
Biodefense [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
External revenue	574	104
Biodefense [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	$ 23,016	(18,496)
Aptevo [Member]
Segment Reporting Information [Line Items]
Number of business units \| BusinessUnit	1
External revenue	$ 8,033	11,486
Total assets	110,772	118,828
Aptevo [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
External revenue	(574)	(104)
Aptevo [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	$ (14,455)	$ (9,814)