Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Accounts receivable, net

Accounts receivable consist of the following (in thousands):

	December 31,
	2019			2018
Accounts receivable	$	16,436		$	15,291
Less allowance for doubtful accounts		(286	)		(196	)
Accounts receivable, net	$	16,150		$	15,095

Inventories, net

Inventories consist of the following (in thousands):

	December 31,
	2019			2018
Raw materials	$	5,822		$	5,813
Work-in-process		1,578			952
Finished goods		51,669			39,758
		59,069			46,523
Less reserve for excess and obsolete		(24,215	)		(17,758	)
Inventories, net	$	34,854		$	28,765

Property and equipment, net

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

	Useful lives		December 31,
	(in years)		2019			2018
Surgical instruments		4	$	58,502		$	54,848
Machinery and equipment		7		6,038			5,971
Computer equipment		3		3,594			3,104
Office furniture and equipment		5		1,297			1,155
Leasehold improvements	various			1,761			1,765
Construction in progress	n/a			496			92
				71,688			66,935
Less accumulated depreciation and amortization				(51,966	)		(53,700	)
Property and equipment, net			$	19,722		$	13,235

Intangible assets, net

In conjunction with the acquisition of SafeOp in March 2018, the Company recorded $21.6 million of new intangible assets. See Note 8 for further information regarding the acquisition. Intangible assets, net consist of the following (in thousands, except as indicated):

	Remaining Avg. Useful lives		December 31,
	(in years)		2019			2018
Developed product technology		10	$	26,976		$	26,976
Intellectual property		—		1,004			1,004
License agreements		1		5,536			5,536
Trademarks and trade names		—		792			792
Customer-related		5		7,458			7,458
Distribution network		4		4,027			4,027
In process research and development		19		8,800			8,800
				54,593			54,593
Less accumulated amortization				(28,988	)		(28,185	)
Intangible assets, net			$	25,605		$	26,408

Schedule of intangible assets, future expected amortization expense

Future amortization expense related to intangible assets as of December 31, 2019 is as follows (in thousands):

Year Ending December 31,
2020	$	1,869
2021		1,888
2022		1,888
2023		1,888
2024		1,785
Thereafter		16,287
Total	$	25,605

Accrued expenses

Accrued expenses consist of the following (in thousands):

	December 31,
	2019		2018
Commissions and sales milestones	$	5,299	$	3,594
Payroll and payroll related		7,949		3,222
Litigation settlement obligation		4,400		4,400
Professional fees		3,945		2,637
Royalties		1,981		1,354
Restructuring and severance accruals		29		710
Taxes		82		(3	)
Interest		155		261
Acquisition related - contingent consideration		-		2,600
Other		2,576		3,541
Total accrued expenses	$	26,416	$	22,316

Schedule of Other Long-Term Liabilities

Other long-term liabilities consist of the following (in thousands):

	December 31, 2019		December 31, 2018
Litigation settlement obligation - long-term portion	$	10,712	$	13,954
Line of credit exit fee		600		600
Tax liabilities		373		835
Other		266		-
Other long-term liabilities	$	11,951	$	15,389