Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows From Operating Activities
Net income	$ 1,346	$ 4,369
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Stock-based compensation	1,105	568
Deferred taxes	(81)	294
Depreciation and amortization	4,609	1,327
Non-cash interest relating to convertible notes and loan cost amortization	1,725	1,683
Changes in operating assets and liabilities:
Accounts receivable, net	(549)	(74)
Inventories, net	(535)	(3,219)
Prepaid expenses and other current assets	201	437
Accounts payable	889	(471)
Accrued compensation and related expenses	(466)	(835)
Current income taxes, net	(23)	(3,772)
Accrued Medicaid rebates	(1,207)	(187)
Accrued expenses, returned goods reserve, and other	3,955	1,000
Net Cash and Cash Equivalents Provided by Operating Activities	10,969	1,120
Cash Flows From Investing Activities
Acquisition of product rights and other related assets	(84,182)	(4,500)
Acquisition of property and equipment	(1,369)	(112)
Net Cash and Cash Equivalents Used in Investing Activities	(85,551)	(4,612)
Cash Flows From Financing Activities
Proceeds from stock option exercises	144	9
Excess tax benefit from share-based compensation awards	1	9
Repurchase of common stock	(2,500)	0
Net Cash and Cash Equivalents (Used in)/Provided by Financing Activities	(2,355)	18
Change in Cash and Cash Equivalents	(76,937)	(3,474)
Cash and cash equivalents, beginning of period	154,684	169,037
Cash and cash equivalents, end of period	77,747	165,563
Supplemental disclosure for cash flow information:
Cash paid for income taxes, net	1,643	6,029
Supplemental non-cash investing and financing activities:
Accrued royalties assumed in asset purchase	1,199	0
Property and equipment purchased and included in accounts payable	$ 85	$ 105