Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2018

Balance Sheet Components

Schedule of Inventory

Inventory consisted of the following (in thousands):

	December 31,
	2018		2017
Raw materials	$	288	$	682
Work-in-process		6,759		7,970
Finished goods		2,050		1,185
Total inventory	$	9,097	$	9,837

Schedule of Property and equipment, net

Property and equipment, net consisted of the following (in thousands):

	December 31,
	2018		2017
Manufacturing equipment	$	11,723	$	10,465
Computer and network equipment		820		710
Furniture and fixtures		110		218
Software		680		455
Leasehold improvements		1,432		1,474
Total property and equipment, gross		14,765		13,322
Less: accumulated depreciation		(10,479)		(9,376)
Total property and equipment, net	$	4,286	$	3,946

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	December 31,
	2018		2017
Accrued payroll-related expenses	$	1,558	$	1,331
Accrued joint development agreement expenses		661		749
Accrued inventory		1,678		897
Deferred rent		390		230
Accrued sales commissions payable to sales representatives		51		75
Other		663		466
Total accrued liabilities	$	5,001	$	3,748