Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities
Net income	$ 2,471	$ 7,940
Adjustments to reconcile net loss to net cash and cash equivalents provided by operating activities:
Stock-based compensation	3,322	1,597
Deferred taxes	(435)	413
Depreciation and amortization	10,565	2,742
Non-cash interest relating to convertible notes and loan cost amortization	3,482	3,388
Changes in operating assets and liabilities:
Accounts receivable, net	(13,630)	(1,583)
Inventories, net	(807)	(5,183)
Prepaid expenses and other current assets	(1,992)	368
Accounts payable	2,850	(1,379)
Accrued royalties	2,423	(220)
Accrued compensation and related expenses	(117)	(504)
Current income taxes, net	977	(5,275)
Accrued Medicaid rebates	1,878	(373)
Accrued expenses, returned goods reserve, and other	3,319	395
Net Cash and Cash Equivalents Provided by Operating Activities	14,306	2,326
Cash Flows From Investing Activities
Changes in restricted cash	(5,001)	0
Acquisition of product rights and other related assets	(144,494)	(4,500)
Acquisition of property and equipment	(2,088)	(310)
Net Cash and Cash Equivalents Used in Investing Activities	(151,583)	(4,810)
Cash Flows From Financing Activities
Payment of debt issuance costs	(294)	0
Proceeds from stock option exercises	504	244
Excess tax benefit from share-based compensation awards	19	47
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	(2,393)	178
Change in Cash and Cash Equivalents	(139,670)	(2,306)
Cash and cash equivalents, beginning of period	154,684	169,037
Cash and cash equivalents, end of period	15,014	166,731
Supplemental disclosure for cash flow information:
Cash paid for interest	2,156	2,048
Cash paid for income taxes, net	2,206	9,450
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	$ 45	$ 50