Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of fair value of financial instruments measured on recurring basis

	March 31, 2014						December 31, 2013
	Level 1		Level 2		Total		Level 1		Level 2		Total
(In thousands)
Financial assets:
Money market funds	$	165,051	$	—	$	165,051	$	85,970	$	—	$	85,970
Corporate securities	—		3,558		3,558		—		5,238		5,238
Total	$	165,051	$	3,558	$	168,609	$	85,970	$	5,238	$	91,208
Financial liabilities:
Foreign currency hedge contracts	$	—	$	7,646	$	7,646	$	—	$	8,871	$	8,871

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

	March 31, 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	$	—	$	52,194	$	47,694	$	—	$	46,042
Hyperion	1,200		—		1,200		1,195		—		1,195
AxoGen note receivable and embedded derivative	27,673		—		26,361		26,544		—		25,785
Avinger note receivable	20,336		—		20,155		20,250		—		19,061
LENSAR note receivable	39,581		—		40,000		39,572		—		39,572
Durata note receivable	25,000		—		25,000		24,995		—		24,995
Direct Flow Medical note receivable	34,926		—		35,859		34,799		—		34,799
Paradigm Spine note receivable	49,493		—		49,493		—		—		—
Total	$	248,400	$	—	$	250,262	$	195,049	$	—	$	191,449
Liabilities:
Series 2012 Notes	$	46,761	$	74,701	$	—	$	172,630	$	277,650	$	—
May 2015 Notes	149,514		212,529		—		148,253		212,304		—
February 2018 Notes	270,944		318,135		—		—		—		—
Term loan	55,921		56,250		—		74,397		75,000		—
Total	$	523,140	$	661,615	$	—	$	395,280	$	564,954	$	—