Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash	$ 2,911	$ 350
Trade accounts receivable, less allowances of $16 and $28, respectively	1,904	2,337
Inventories, net	4,700	6,168
Prepaid and other current assets	666	479
Total current assets	10,181	9,334
Property and equipment, net	390	389
Operating lease right-of-use assets	1,179	1,289
Restructured lease right-of-use assets	268	322
Other assets	405	405
Total assets	12,423	11,739
Current liabilities:
Accounts payable	1,188	1,340
Accrued liabilities	104	179
Accrued legal and professional fees	322	215
Accrued payroll and related benefits	448	360
Accrued sales commissions	39	32
Accrued severance	3	7
Accrued restructuring	24	24
Accrued warranty reserve	240	195
Deferred revenue	4	18
Operating lease liabilities	567	550
Restructured lease liabilities	325	319
Finance lease liabilities	3	3
Warrant liabilities	763	0
Convertible notes	0	1,700
Iliad note, net of discount and loan origination fees	854	885
Credit line borrowings, net of loan origination fees	790	715
Total current liabilities	5,674	6,542
Other liabilities	7	14
Operating lease liabilities, net of current portion	770	906
Restructured lease liabilities, net of current portion	85	168
Finance lease liabilities, net of current portion	3	4
Iliad note, net of current maturities	0	109
Total liabilities	6,539	7,743
STOCKHOLDERS' EQUITY
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	2	1
Additional paid-in capital	131,300	128,872
Accumulated other comprehensive loss	(3)	(3)
Accumulated deficit	(125,415)	(124,874)
Total stockholders' equity	5,884	3,996
Total liabilities and stockholders' equity	$ 12,423	$ 11,739