Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net loss	$ (7,419)	$ (15,207)
Adjustments to reconcile to net cash provided by (used in) operating activities:
Stock-based compensation expense	7,790	6,015
Depreciation and amortization	17,298	15,294
Income taxes	630	(5,199)
Change in fair value of contingent consideration	751	1,630
Write off of debt issuance costs	0	1,831
Excess tax benefits from stock-based compensation	(7,241)	(5,179)
Other	153	499
Changes in operating assets and liabilities:
Accounts receivable	(40,884)	2,274
Inventories	(19,034)	1,232
Income taxes	(16,740)	(5,184)
Prepaid expenses and other assets	2,465	(567)
Accounts payable	2,062	(10,357)
Accrued expenses and other liabilities	157	(644)
Accrued compensation	(5,473)	(3,902)
Provision for chargebacks	(253)	284
Deferred revenue	2,368	(1,246)
Net cash used in operating activities	(63,370)	(18,426)
Cash flows from investing activities:
Purchases of property, plant and equipment	(19,681)	(9,400)
Acquisition of Cangene Corporation, net of acquired cash	0	(178,167)
Net cash used in investing activities	(19,681)	(187,567)
Cash flows from financing activities:
Proceeds from convertible debenture, net of debt issuance costs	0	241,654
Proceeds from other long-term debt obligations	2,000	1,000
Issuance of common stock upon exercise of stock options	13,162	9,969
Excess tax benefits from stock-based compensation	7,241	5,179
Principal payments on long-term indebtedness	0	(62,000)
Contingent obligation payments	(5,002)	(1,019)
Net cash provided by financing activities	17,401	194,783
Effect of exchange rate changes on cash and cash equivalents	(8)	2
Net decrease in cash and cash equivalents	(65,658)	(11,208)
Cash and cash equivalents at beginning of period	280,499	179,338
Cash and cash equivalents at end of period	$ 214,841	$ 168,130