Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2013

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable

Accounts receivable consist of the following (in thousands):

	December 31,
	2013			2012
Accounts receivable	$	42,443		$	42,086
Allowance for doubtful accounts	(1,048		)	(1,074		)
Accounts receivables, net	$	41,395		$	41,012

Inventories

Inventories consist of the following (in thousands):

	December 31, 2013							December 31, 2012
	Gross		Reserve for excess and obsolete			Net		Gross		Reserve for excess and obsolete			Net
Raw materials	$	4,375	$	—		$	4,375	$	5,863	$	—		$	5,863
Work-in-process	531		—			531		1,350		—			1,350
Finished goods	60,979		(23,946		)	37,033		59,864		(17,222		)	42,642
Inventories	$	65,885	$	(23,946	)	$	41,939	$	67,077	$	(17,222	)	$	49,855

Property and Equipment

Property and equipment consist of the following (in thousands):

	Useful lives (in years)	December 31,
		2013			2012
Surgical instruments	4	$	62,636		$	56,712
Machinery and equipment	7	14,692			13,996
Computer equipment	3	3,357			3,269
Office furniture and equipment	5	3,703			3,528
Leasehold improvements	various	4,161			4,092
Building	39	52			64
Land	n/a	10			13
Construction in progress	n/a	1,228			1,045
		89,839			82,719
Less accumulated depreciation and amortization		(61,809		)	(52,316		)
Property and equipment, net		$	28,030		$	30,403

Intangible Assets

Intangibles assets consist of the following (in thousands):

	Useful lives (in years)	December 31,
		2013			2012
Developed product technology	3-8	$	23,633		$	23,253
Distribution rights	3	2,343			4,281
Intellectual property	5	1,004			1,004
License agreements	1-7	17,686			17,423
Core technology	10	5,137			4,940
Trademarks and trade names	3-9	3,920			3,796
Customer-related	12-15	22,161			19,221
Distribution network	10-12	4,027			3,906
Physician education programs	10	3,160			3,039
Supply agreement	10	225			225
		83,296			81,088
Less accumulated amortization		(44,232		)	(34,232		)
Intangible assets, net		$	39,064		$	46,856

Future Expected Amortization Expense Related to Intangible Assets

The future expected amortization expense related to intangible assets as of December 31, 2013 is as follows (in thousands):

Year Ending December 31,
2014	$	6,751
2015	6,102
2016	5,608
2017	4,986
2018	3,279
Thereafter	12,338
Total	$	39,064

Accrued Expenses

Accrued expenses consist of the following (in thousands):

	December 31,
	2013		2012
Legal	$	2,139	$	939
Accounting	928		847
Phygen purchase price	—		3,936
Severance	297		749
Restructuring	9,170		—
Sales milestones	1,828		2,423
Accrued taxes	1,120		1,605
Deferred rent	1,163		1,483
Royalties	2,347		1,911
Commissions	6,180		5,371
Payroll and related	9,369		7,027
Litigation settlements	22,600		4,102
Other	5,855		8,097
Total accrued expenses	$	62,996	$	38,490

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill from December 31, 2012 through December 31, 2013 were as follows (in thousands):

	December 31,
	2013			2012
Balance at December 31, 2012 and 2011	$	180,838		$	168,609
Change in Phygen goodwill	(1,610		)	10,124
Effect of foreign exchange rate on goodwill	3,776			2,105
Balance at December 31,	$	183,004		$	180,838