Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
(in thousands)			Royalty Rights - At Fair Value
Beginning Balance at December 31, 2013			—
	Transfer into Level 3		235,677
	Total change in fair value for the period
		Included in earnings	(4,061		)
	Purchases, issues, sales, and settlements
		Purchases	15,500
Ending Balance at June 30, 2014			$	247,116

Schedule of fair value of financial instruments measured on recurring basis

	June 30, 2014								December 31, 2013
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
(In thousands)
Financial assets:
Money market funds	$	155,107	$	—	$	—	$	155,107	$	85,970	$	—	$	—	$	85,970
Corporate securities	—		3,243		—		3,243		—		5,238		—		5,238
Royalty rights - at fair value	—		—		247,116		247,116		—		—		235,677		235,677
Total	$	155,107	$	3,243	$	247,116	$	405,466	$	85,970	$	5,238	$	235,677	$	326,885
Financial liabilities:
Foreign currency hedge contracts	$	—	$	4,199	$	—	$	4,199	$	—	$	8,871	$	—	$	8,871

Schedule of fair value of assets and liabilities not subject to fair value recognition by level within the valuation hierarchy

	June 30, 2014						December 31, 2013
	Carrying Value		Fair Value Level 2		Fair Value Level 3		Carrying Value		Fair Value Level 2		Fair Value Level 3
(In thousands)
Assets:
Wellstat Diagnostics note receivable	$	50,191	$	—	$	50,191	$	47,694	$	—	$	46,042
Hyperion	1,200		—		1,200		1,194		—		1,195
AxoGen note receivable and embedded derivative	28,942		—		27,160		26,544		—		25,785
Avinger note receivable	20,422		—		19,336		20,250		—		19,061
LENSAR note receivable	39,591		—		40,842		39,572		—		39,572
Durata note receivable	40,000		—		39,402		24,995		—		24,995
Direct Flow Medical note receivable	35,049		—		34,723		34,799		—		34,799
Paradigm Spine note receivable	49,517		—		51,165		—		—		—
kaléo note receivable	155,407		—		155,407		—		—		—
Total	$	420,319	$	—	$	419,426	$	195,048	$	—	$	191,449
Liabilities:
Series 2012 Notes	$	47,160	$	88,523	$	—	$	172,630	$	277,650	$	—
May 2015 Notes	150,797		248,889		—		148,253		212,304		—
February 2018 Notes	272,824		341,955		—		—		—		—
Term loan	37,364		37,500		—		74,397		75,000		—
Total	$	508,145	$	716,867	$	—	$	395,280	$	564,954	$	—