Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2016

Balance Sheet Related Disclosures [Abstract]

Accounts receivable, net

Accounts receivable consist of the following (in thousands):

	December 31,
	2016			2015
Accounts receivable	$	19,870		$	27,639
Less allowance for doubtful accounts		(1,358	)		(769	)
Accounts receivables, net	$	18,512		$	26,870

Inventories, net

Inventories consist of the following (in thousands):

	December 31,
	2016			2015
Raw materials	$	7,301		$	7,237
Work-in-process		823			1,908
Finished goods		38,469			39,388
		46,593			48,533
Less reserve for excess and obsolete finished goods		(16,500	)		(15,901	)
Inventories, net	$	30,093		$	32,632

Property and equipment, net

Property and equipment consist of the following (in thousands except for useful lives):

	Useful lives		December 31,
	(in years)		2016			2015
Surgical instruments		4	$	53,095		$	52,404
Machinery and equipment		7		5,435			14,416
Computer equipment		3		3,511			3,816
Office furniture and equipment		5		2,695			3,426
Leasehold improvements	various			3,467			3,467
Construction in progress	n/a			445			139
				68,648			77,668
Less accumulated depreciation and amortization				(53,572	)		(61,587	)
Property and equipment, net			$	15,076		$	16,081

Intangible assets

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

	Remaining Avg. Useful lives		December 31,
	(in years)		2016			2015
Developed product technology		—	$	13,876		$	13,876
Intellectual property		—		1,004			1,004
License agreements		2		5,265			5,015
Trademarks and trade names		—		732			732
Customer-related		8		7,458			7,458
Distribution network		8		4,027			4,027
				32,362			32,112
Less accumulated amortization				(26,651	)		(23,306	)
Intangible assets, net			$	5,711		$	8,806

Schedule of intangible assets, future expected amortization expense

The future expected amortization expense related to intangible assets as of December 31, 2016 is as follows (in thousands):

Year Ending December 31,
2017	$	936
2018		750
2019		689
2020		688
2021		688
Thereafter		1,960
Total	$	5,711

Goodwill

The changes in the carrying amount of goodwill from December 31, 2015 through December 31, 2016 were as follows (in thousands):

	2016		2015
Balance at January 1	$	—	$	171,333
Impairment charge		—		(164,263	)
Effect of foreign exchange rate on goodwill		—		(7,070	)
Balance at December 31	$	—	$	—

Accrued expenses

Accrued expenses consist of the following (in thousands):

	December 31,
	2016		2015
Commissions and sales milestones	$	4,202	$	3,963
Payroll and payroll related		2,384		3,947
Litigation settlements		4,400		4,400
Globus related accruals		3,830		—
Accrued professional fees		3,093		1,972
Royalties		1,347		1,199
Restructuring and severance accruals		1,328		505
Accrued taxes		404		765
Guaranteed collaboration compensation, current		2,228		—
Accrued interest		387		999
Other		3,986		3,425
Total accrued expenses	$	27,589	$	21,175