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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Current assets:    
Cash $ 938 $ 2,682
Trade accounts receivable, less allowances of $10 and $14, respectively 1,155 1,240
Inventories, net 7,168 7,866
Short-term deposits 501 712
Prepaid and other current assets 847 924
Total current assets 10,609 13,424
Property and equipment, net 585 675
Operating lease right-of-use assets 1,316 292
Total assets 12,510 14,391
Current liabilities:    
Accounts payable 1,309 2,235
Accrued liabilities 199 265
Accrued legal and professional fees 53 104
Accrued payroll and related benefits 486 718
Accrued sales commissions 55 57
Accrued warranty reserve 315 295
Deferred revenue 0 268
Operating lease liabilities 180 325
Finance lease liabilities 0 1
Credit line borrowings, net of loan origination fees 1,981 2,169
Total current liabilities 6,418 8,156
Operating lease liabilities, net of current portion 1,133 26
Streeterville - 2022 note, net of current maturities 788 0
Total liabilities 8,339 8,182
STOCKHOLDERS' EQUITY    
Preferred stock, par value $0.0001 per share 0 0
Common stock, par value $0.0001 per share 1 0
Additional paid-in capital 148,221 144,953
Accumulated other comprehensive loss (3) (3)
Accumulated deficit (144,048) (138,741)
Total stockholders' equity 4,171 6,209
Total liabilities and stockholders' equity 12,510 14,391
2021 Streeterville Note    
Current liabilities:    
Notes Payable, Current 809 1,719
2022 Streeterville Note    
Current liabilities:    
Notes Payable, Current $ 1,031 $ 0