Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2020

Balance Sheet Components

Schedule of Inventory

Inventory consisted of the following (in thousands):

	December 31,		December 31,
	2020		2019
Raw materials	$	329	$	119
Work-in-process		4,910		6,329
Finished goods		482		1,415
Total inventory	$	5,721	$	7,863

Schedule of property and equipment, net

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

	December 31,
	2020		2019
Manufacturing equipment	$	12,296	$	12,228
Computer and network equipment		917		877
Furniture and fixtures		112		112
Software		925		925
Leasehold improvements		1,444		1,444
Total property and equipment, gross		15,694		15,586
Less: accumulated depreciation		(13,748)		(12,107)
Total property and equipment, net	$	1,946	$	3,479

Schedule of accrued liabilities

Accrued liabilities consisted of the following (in thousands):

	December 31,		December 31,
	2020		2019
Payroll-related expenses	$	1,274	$	1,236
Joint development agreement expenses		—		170
Inventory		416		87
Restructuring expenses		—		782
Other		542		452
Total accrued liabilities	$	2,232	$	2,727