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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash $ 1,327 $ 1,836
Trade accounts receivable, less allowances of $16 and $8, respectively 1,149 2,021
Inventories, net 8,129 5,641
Short-term deposits 908 796
Prepaid and other current assets 810 782
Total current assets 12,323 11,076
Property and equipment, net 531 420
Operating lease right-of-use assets 548 794
Restructured lease right-of-use assets 0 107
Total assets 13,402 12,397
Current liabilities:    
Accounts payable 2,846 2,477
Accrued liabilities 101 45
Accrued legal and professional fees 38 149
Accrued payroll and related benefits 685 885
Accrued sales commissions 49 95
Accrued restructuring 0 11
Accrued warranty reserve 239 227
Deferred revenue 71 72
Operating lease liabilities 621 598
Restructured lease liabilities 0 168
Finance lease liabilities 2 3
Streeterville note, net of discount and loan origination fees 1,527 0
PPP loan 0 529
Credit line borrowings, net of loan origination fees 1,573 2,298
Total current liabilities 7,752 7,557
Operating lease liabilities, net of current portion 34 318
Finance lease liabilities, net of current portion 0 1
PPP loan, net of current maturities 0 266
Streeterville note, net of current maturities 13 0
Total liabilities 7,799 8,142
STOCKHOLDERS' EQUITY    
Preferred stock, par value $0.0001 per share 0 0
Common stock, par value $0.0001 per share 0 0
Additional paid-in capital 140,576 135,113
Accumulated other comprehensive loss (3) (3)
Accumulated deficit (134,970) (130,855)
Total stockholders' equity 5,603 4,255
Total liabilities and stockholders' equity $ 13,402 $ 12,397