CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Product sales	$ 341,750	$ 114,219	$ 58,302
Royalties	985	1,821	45,003
License and other revenue		31,515	12,796
Non-cash PDL royalty revenue		242,808	18,104
Total revenues	342,735	390,363	134,205
Costs and expenses:
Cost of sales (excluding amortization of intangible assets)	67,898	15,146	7,091
Research and development expense	17,541	7,116	8,073
Acquired in-process research and development	54,900
Selling, general and administrative expense	199,352	121,126	105,176
Amortization of intangible assets	83,344	10,161	4,548
Non-cash gain on settlement agreement	(29,900)
Total costs and expenses	393,135	153,549	124,888
Income (loss) from operations	(50,400)	236,814	9,317
Other (expense) income:
Interest and other income	599	215	662
Interest expense	(73,436)	(9,275)	(911)
Non-cash interest expense on PDL liability		(14,646)	(4,488)
Total other (expense) income	(72,837)	(23,706)	(4,737)
Net income (loss) before income taxes	(123,237)	213,108	4,580
(Provision for) benefit from income taxes	47,499	(81,346)	38,733
Net income (loss)	$ (75,738)	$ 131,762	$ 43,313
Basic net income (loss) per share (in dollars per share)	$ (1.26)	$ 2.26	$ 0.76
Diluted net income (loss) per share (in dollars per share)	$ (1.26)	$ 2.05	$ 0.75
Shares used in computing basic net income (loss) per share (in shares)	60,116,530	58,292,633	56,736,009
Shares used in computing diluted net income (loss) per share (in shares)	60,116,530	66,307,364	57,543,979