Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities
Net income	$ 3,833	$ 2,471
Adjustments to reconcile net loss to net cash and cash equivalents provided by operating activities:
Stock-based compensation	3,193	3,322
Deferred taxes	(1,706)	(435)
Depreciation and amortization	13,807	10,565
Non-cash interest relating to convertible notes and loan cost amortization	3,790	3,482
Changes in operating assets and liabilities:
Accounts receivable, net	(9,618)	(13,630)
Inventories, net	776	(807)
Prepaid expenses and other current assets	836	(1,992)
Accounts payable	(345)	2,850
Accrued royalties	(701)	2,423
Accrued compensation and related expenses	(404)	(117)
Current income taxes, net	(6,389)	977
Accrued government rebates	(2,357)	1,878
Returned goods reserve	1,802	661
Accrued expenses and other	13	2,658
Net Cash and Cash Equivalents Provided by Operating Activities	6,530	14,306
Cash Flows From Investing Activities
Acquisition of product rights and other related assets	(50,956)	(144,494)
Acquisition of property and equipment	(4,442)	(2,088)
Net Cash and Cash Equivalents Used in Investing Activities	(55,398)	(146,582)
Cash Flows From Financing Activities
Payment of debt issuance costs	0	(294)
Net borrowings under line of credit agreement	30,000	0
Proceeds from stock option exercises	131	504
Excess tax benefit from share-based compensation awards	0	19
Repurchase of common stock under the stock repurchase program	0	(2,500)
Treasury stock purchases for restricted stock vestings and forfeitures	(259)	(122)
Net Cash and Cash Equivalents Provided by/(Used in) Financing Activities	29,872	(2,393)
Change in Cash, Cash Equivalents, and Restricted Cash	(18,996)	(134,669)
Cash, cash equivalents, and restricted cash, beginning of period	32,367	154,684
Cash, cash equivalents, and restricted cash, end of period	13,371	20,015
Reconciliation of cash, cash equivalents, and restricted cash, beginning of period
Cash and cash equivalents	27,365	154,684
Restricted cash	5,002	0
Cash, cash equivalents, and restricted cash, beginning of period	32,367	154,684
Reconciliation of cash, cash equivalents, and restricted cash, end of period
Cash and cash equivalents	8,369	15,014
Restricted cash	5,002	5,001
Cash, cash equivalents, and restricted cash, end of period	13,371	20,015
Supplemental disclosure for cash flow information:
Cash paid for interest, net of amounts capitalized	2,097	2,056
Cash paid for income taxes, net	9,882	2,206
Supplemental non-cash investing and financing activities:
Accrued royalties related to asset purchase	0	3,882
Property and equipment purchased and included in accounts payable	$ 109	$ 45