Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities
Net income	$ 5,014	$ 12,499
Adjustments to reconcile net loss to net cash and cash equivalents provided by operating activities:
Stock-based compensation	4,687	2,717
Deferred taxes	(1,084)	55
Depreciation and amortization	16,531	4,789
Non-cash interest relating to convertible notes and loan cost amortization	5,421	5,135
Changes in operating assets and liabilities:
Accounts receivable, net	(25,545)	(4,348)
Inventories, net	(4,016)	(6,223)
Prepaid expenses and other current assets	(623)	(2)
Accounts payable	2,562	(130)
Accrued royalties	6,082	(511)
Accrued compensation and related expenses	238	(329)
Current income taxes, net	198	(5,225)
Accrued Medicaid rebates	1,820	2,164
Accrued expenses, returned goods reserve, and other	4,105	1,971
Net Cash and Cash Equivalents Provided by Operating Activities	15,390	12,562
Cash Flows From Investing Activities
Changes in restricted cash	(5,001)	0
Acquisition of product rights and other related assets	(144,494)	(30,500)
Acquisition of property and equipment	(3,177)	(1,078)
Net Cash and Cash Equivalents Used in Investing Activities	(152,672)	(31,578)
Cash Flows From Financing Activities
Payment of debt issuance costs	(294)	0
Proceeds from stock option exercises	1,362	771
Excess tax benefit from share-based compensation awards	307	234
Repurchase of common stock under the stock repurchase program	(2,500)	0
Treasury stock purchases for restricted stock vestings and forfeitures	(122)	(113)
Net Cash and Cash Equivalents (Used in)/Provided by Financing Activities	(1,247)	892
Change in Cash and Cash Equivalents	(138,529)	(18,124)
Cash and cash equivalents, beginning of period	154,684	169,037
Cash and cash equivalents, end of period	16,155	150,913
Supplemental disclosure for cash flow information:
Cash paid for interest	2,156	2,048
Cash paid for income taxes, net	5,847	10,668
Supplemental non-cash investing and financing activities:
Accrued royalties related to asset purchase	3,882	0
Property and equipment purchased and included in accounts payable	$ 102	$ 109