CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Royalty revenue from a related party, net of amortization for capitalized fees paid to a related party of $3,456 for the three months ended March 31, 2017 and 2016	$ 40,271	$ 23,955
Revenue from collaborative arrangements from a related party	221	221
Total net revenue	40,492	24,176
Operating expenses:
Research and development	354	392
General and administrative	10,795	6,252
Total operating expenses	11,149	6,644
Income from operations	29,343	17,532
Other income (expense), net	47	(32)
Interest income	236	92
Interest expense	(12,781)	(13,157)
Net income	$ 16,845	$ 4,435
Basic net income per share	$ 0.16	$ 0.04
Diluted net income per share	$ 0.15	$ 0.04
Shares used to compute basic and diluted net income per share:
Shares used to compute basic net income per share	107,487	112,482
Shares used to compute diluted net income per share	120,336	113,178