Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2017		Jun. 30, 2016		Jun. 30, 2017		Jun. 30, 2016
Revenues:
Royalties		$ 14,211		$ 9,754		$ 38,441		$ 24,144
Material sales		5,550		3,886		6,672		9,227
License fees, milestones and other revenues		8,234		5,881		12,151		15,798
Total revenues		27,995		19,521		57,264		49,169
Operating costs and expenses:
Cost of sales	[1]	903		720		1,244		1,675
Amortization of intangibles		2,706		2,681		5,420		5,206
Research and development		4,822		4,914		13,495		8,915
General and administrative		6,549		7,237		13,872		14,309
Total operating costs and expenses		14,980		15,552		34,031		30,105
Income from operations		13,015		3,969		23,233		19,064
Other (expense) income:
Interest expense, net		(2,860)		(3,051)		(5,803)		(6,055)
Increase in contingent liabilities		(825)		(332)		(966)		(1,638)
Loss from Viking		(1,248)		(11,138)		(2,330)		(12,743)
Other income, net		218		501		359		892
Total other expense, net		(4,715)		(14,020)		(8,740)		(19,544)
Income before income taxes		8,300		(10,051)		14,493		(480)
Income tax (expense) benefit		(2,242)		3,881		(3,356)		187
Income (loss) from operations		6,058		(6,170)		11,137		(293)
Gain on sale of Oncology Product Line before income taxes		0		0		0		1,139
Income tax expense on discontinued operations		0		0		0		(408)
Income from discontinued operations		0		0		0		731
Net income (loss)		$ 6,058		$ (6,170)		$ 11,137		$ 438
Basic earnings (loss) per share data
Income (loss) from continuing operations (in usd per share)	[2]	$ 0.29		$ (0.30)		$ 0.53		$ (0.01)
Income from discontinued operations (in usd per share)	[2]	0.00		0.00		0.00		0.04
Net income (loss) (in usd per share)		0.29	[2]	(0.30)	[2]	0.53	[2]	0.02
Diluted earnings per share data (2)
Income (loss) from continuing operations (in usd per share)	[2]	0.26		(0.30)		0.48		(0.01)
Income from discontinued operations (in usd per share)	[2]	0.00		0.00		0.00		0.04
Net income (loss) (in usd per share)		$ 0.26	[2]	$ (0.30)		$ 0.48		$ 0.02
Shares used for computation (in thousands)
Basic (in shares)		21,013,000		20,832,000		20,975,000		20,765,000
Diluted (in shares)		23,215,900		20,831,809		23,117,164		20,765,053

[1] Excludes amortization of intangibles.

[2] The sum of net income per share amounts may not equal the totals due to rounding.