CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue:
Royalty revenue from a related party, net of amortization for capitalized fees paid to a related party of $13,823, $13,823 and $11,066 in the year ended December 31, 2016, 2015, and 2014	$ 132,684	$ 53,064	$ 7,351
Revenue from collaborative arrangements from a related party, net	885	885	1,082
Total net revenue	133,569	53,949	8,433
Operating expenses:
Research and development	1,393	2,619	7,498
General and administrative	23,188	19,750	34,864
Total operating expenses	24,581	22,369	42,362
Income (loss) from operations	108,988	31,580	(33,929)
Other income (expense), net	2,382	1,120	(3,272)
Interest income	582	343	563
Interest expense	(52,416)	(51,803)	(36,892)
Income (loss) from continuing operations before income taxes	59,536	(18,760)	(73,530)
Loss from discontinued operations (Notes 1 and 12)	0	0	(94,934)
Net income (loss)	$ 59,536	$ (18,760)	$ (168,464)
Basic net income (loss) per share:
Continuing operations (in dollars per share)	$ 0.54	$ (0.16)	$ (0.66)
Discontinued operations (in dollars per share)	0.00	0.00	(0.84)
Basic net income (loss) per share (in dollars per share)	0.54	(0.16)	(1.50)
Diluted net income (loss) per share:
Continuing operations (in dollars per share)	0.53	(0.16)	(0.66)
Discontinued operations (in dollars per share)	0.00	0.00	(0.84)
Diluted net income (loss) per share (in dollars per share)	$ 0.53	$ (0.16)	$ (1.50)
Shares used to compute basic and diluted net income (loss) per share:
Shares used to compute basic net income (loss) per share	110,280	115,372	112,059
Shares used to compute diluted net income (loss) per share	123,233	115,372	112,059
Cash dividends declared per common share (in dollars per share)	$ 0.00	$ 0.75	$ 0.50