Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

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

The following tables summarize the changes in Level 3 assets and the gains and losses included in earnings for the year ended December 31, 2015:

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
(in thousands)				Royalty Rights - At Fair Value
December 31, 2014							$	259,244
	Transfer into Level 3						—
	Total net change in fair value for the period
		Change in fair value of royalty rights - at fair value		$	68,367
		Proceeds from royalty rights - at fair value		$	(43,407	)
			Total net change in fair value for the period				24,960
	Purchases, issues, sales, and settlements
		Purchases					115,000
Ending Balance at December 31, 2015							$	399,204

Schedule of fair value of financial instruments measured on recurring basis

	December 31, 2015								December 31, 2014
(In thousands)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Financial assets:
Money market funds	$	94,801	$	—	$	—	$	94,801	$	221,792	$	—	$	—	$	221,792
Corporate securities	—		1,469		—		1,469		—		2,310		—		2,310
Foreign currency hedge contracts	—		2,802		—		2,802		—		4,069		—		4,069
Warrants	—		984		—		984		—		—		—		—
Royalty rights - at fair value	—		—		399,204		399,204		—		—		259,244		259,244
Total	$	94,801	$	5,255	$	399,204	$	499,260	$	221,792	$	6,379	$	259,244	$	487,415

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

	December 31, 2015						December 31, 2014
	Carrying Value		Level 2		Level 3		Carrying Value		Level 2		Level 3
(In thousands)
Assets:
Wellstat Diagnostics note receivable	$	50,191	$	—	$	55,970	$	50,191	$	—	$	50,191
Hyperion note receivable	1,200		—		1,200		1,200		—		1,200
Avinger note receivable	—		—		—		20,611		—		20,760
LENSAR note receivable	42,271		—		42,618		39,668		—		40,451
Direct Flow Medical note receivable	51,852		—		51,992		50,397		—		49,940
Paradigm Spine note receivable	53,973		—		54,250		49,571		—		50,125
kaléo note receivable	146,778		—		146,789		151,574		—		151,073
CareView note receivable	18,640		—		19,495		—		—		—
Total	$	364,905	$	—	$	372,314	$	363,212	$	—	$	363,740
Liabilities:
Series 2012 Notes	$	—	$	—	$	—	$	22,261	$	33,506	$	—
May 2015 Notes	—		—		—		153,235		205,534		—
February 2018 Notes	232,835		—		197,946		276,228		289,665		—
Term loan	24,966		—		25,000		—		—		—
Total	$	257,801	$	—	$	222,946	$	451,724	$	528,705	$	—