Select Balance Sheet Details (Tables)

3 Months Ended

Mar. 31, 2016

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, net

Accounts receivable, net consist of the following (in thousands):

	March 31, 2016			December 31, 2015
Accounts receivable	$	40,686		$	39,380
Allowance for doubtful accounts	(1,250		)	(1,061		)
Accounts receivable, net	$	39,436		$	38,319

Inventories, net

Inventories, net consist of the following (in thousands):

	March 31, 2016			December 31, 2015
Raw materials	$	7,255		$	7,237
Work-in-process	2,150			1,908
Finished goods	58,991			55,393
	68,396			64,538
Less reserve for excess and obsolete finished goods	(20,438		)	(19,630		)
Inventories, net	$	47,958		$	44,908

Property and Equipment, net

Property and equipment, net consist of the following (in thousands except as indicated):

	Useful lives (in years)	March 31, 2016			December 31, 2015
Surgical instruments	4	$	68,969		$	65,723
Machinery and equipment	7	13,854			15,520
Computer equipment	3	4,304			3,984
Office furniture and equipment	5	3,626			3,746
Leasehold improvements	various	3,867			3,856
Building	39	49			65
Land	n/a	9			9
Construction in progress	n/a	208			354
		94,886			93,257
Less accumulated depreciation and amortization		(72,213		)	(71,312		)
Property and equipment, net		$	22,673		$	21,945

Intangible Assets, net

Intangible assets, net consist of the following (in thousands except for useful lives):

	Remaining Avg. Useful lives (in years)	March 31, 2016			December 31, 2015
Developed product technology	1	$	21,908		$	21,633
Distribution rights	4	2,217			2,100
Intellectual property	—	1,004			1,004
License agreements	1	16,716			16,714
Core technology	4	4,230			4,086
Trademarks and trade names	2	3,334			3,245
Customer-related	9	19,582			19,169
Distribution network	5	4,027			4,027
Physician education programs	—	2,602			2,513
Supply agreement	—	225			225
		75,845			74,716
Less accumulated amortization		(54,841		)	(53,100		)
Intangible assets, net		$	21,004		$	21,616

Schedule of Intangible assets, future amortization expense

Future amortization expense related to intangible assets as ofMarch 31, 2016is as follows (in thousands):

Year Ending December 31,
Remainder of 2016	$	3,058
2017	4,078
2018	2,901
2019	2,453
2020	1,841
Thereafter	6,673
	$	21,004

Accrued Expenses

Accrued expenses consist of the following (in thousands):

	March 31, 2016		December 31, 2015
Commissions and sales milestones	$	5,349	$	5,920
Payroll and payroll related	5,518		5,577
Litigation settlements	4,400		4,400
Accrued professional fees	2,409		2,203
Royalties	1,433		1,578
Restructuring and severance accruals	1,302		1,358
Accrued taxes	3,477		1,074
Accrued interest	973		999
Other	5,997		6,682
Total accrued expenses	$	30,858	$	29,791