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Consolidated Balance Sheets - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets: |  |  |
Cash |  | $ 1,836 | $ 350
Trade accounts receivable, less allowances of $8 and $28, respectively |  | 2,021 | 2,337
Inventories, net |  | 5,641 | 6,168
Short-term deposits |  | 796 | 126
Prepaid and other current assets |  | 782 | 353
Total current assets |  | 11,076 | 9,334
Property and equipment, net |  | 420 | 389
Operating lease, right-of-use asset |  | 794 | 1,289
Restructured lease, right-of-use asset |  | 107 | 322
Other assets |  | 0 | 405
Total assets |  | 12,397 | 11,739
Current liabilities: |  |  |
Accounts payable |  | 2,477 | 1,340
Accrued liabilities |  | 45 | 186
Accrued legal and professional fees |  | 149 | 215
Accrued payroll and related benefits |  | 885 | 360
Accrued sales commissions |  | 95 | 32
Accrued restructuring |  | 11 | 24
Accrued warranty reserve |  | 227 | 195
Deferred revenue |  | 72 | 18
Operating lease liabilities |  | 598 | 550
Restructured lease liabilities |  | 168 | 319
Finance lease liabilities |  | 3 | 3
Credit line borrowings, net of loan origination fees |  | 2,298 | 715
Convertible notes |  | 0 | 1,700
Iliad note, net of discount and loan origination fees |  | 0 | 885
PPP loan |  | 529 | 0
Total current liabilities |  | 7,557 | 6,542
Other liabilities |  | 0 | 14
Operating lease liabilities, net of current portion |  | 318 | 906
Restructured lease liabilities, net of current portion |  | 0 | 168
Finance lease liabilities, net of current portion |  | 1 | 4
PPP loan, net of current maturities |  | 266 | 0
Iliad note, net of current maturities |  | 0 | 109
Total liabilities |  | 8,142 | 7,743
STOCKHOLDERS’ EQUITY |  |  |
Preferred stock, par value $0.0001 per share: Authorized: 2,000,000 shares in 2019 and 2018 Issued and outstanding: no shares in 2016 and 2015 |  | 0 | 0
Common stock, par value $0.0001 per share: Authorized: 30,000,000 shares in 2019 and 2018 Issued and outstanding: 11,710,549 at December 31, 2016 and 11.648,978 at December 31, 2015 | [1] | 0 | 0
Additional paid-in capital |  | 135,113 | 128,873
Accumulated other comprehensive loss |  | (3) | (3)
Accumulated deficit |  | (130,855) | (124,874)
Total stockholders' equity |  | 4,255 | 3,996
Total liabilities and stockholders' equity |  | $ 12,397 | $ 11,739
[1] | *Shares outstanding for prior periods have been restated for the 1-for-5 reverse stock split effective June 11, 2020.

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