Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Revenues:
Product sales	$ 18,291us-gaap_SalesRevenueGoodsNet	$ 35,767us-gaap_SalesRevenueGoodsNet
Contract manufacturing	12,243ebs_ContractManufacturing	2,726ebs_ContractManufacturing
Contracts, grants and collaborations	33,099us-gaap_ContractsRevenue	15,391us-gaap_ContractsRevenue
Total revenues	63,633us-gaap_SalesRevenueNet	53,884us-gaap_SalesRevenueNet
Operating expenses:
Cost of product sales and contract manufacturing	18,748us-gaap_CostOfGoodsSold	18,997us-gaap_CostOfGoodsSold
Research and development	38,702us-gaap_ResearchAndDevelopmentExpense	30,256us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	34,493	30,089
Loss from operations	(28,310)us-gaap_OperatingIncomeLoss	(25,458)us-gaap_OperatingIncomeLoss
Other income (expense):
Interest income	82us-gaap_InvestmentIncomeInterest	40us-gaap_InvestmentIncomeInterest
Interest expense	(1,661)us-gaap_InterestExpense	(3,535)us-gaap_InterestExpense
Other income (expense), net	100us-gaap_OtherNonoperatingIncomeExpense	512us-gaap_OtherNonoperatingIncomeExpense
Total other income (expense)	(1,479)us-gaap_NonoperatingIncomeExpense	(2,983)us-gaap_NonoperatingIncomeExpense
Loss before benefit from income taxes	(29,789)	(28,441)
Benefit for income taxes	(8,269)us-gaap_IncomeTaxExpenseBenefit	(8,205)us-gaap_IncomeTaxExpenseBenefit
Net loss	$ (21,520)us-gaap_ProfitLoss	$ (20,236)us-gaap_ProfitLoss
Loss per share - basic	$ (0.57)us-gaap_EarningsPerShareBasic	$ (0.55)us-gaap_EarningsPerShareBasic
Loss per share - diluted	$ (0.57)us-gaap_EarningsPerShareDiluted	$ (0.55)us-gaap_EarningsPerShareDiluted
Weighted-average number of shares - basic (in shares)	37,949,358	36,854,370
Weighted-average number of shares - diluted (in shares)	37,949,358	36,854,370

Revenue earned during the period arising from manufacturing sale under the terms of a contract.

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