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Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 11,935 $ 16,629
Trade accounts receivable, less allowances of $73 and $236, respectively 2,983 5,640
Inventories, net 6,779 9,469
Prepaid and other current assets 1,046 882
Assets held for sale 410 0
Total current assets 23,153 32,620
Property and equipment, net 1,352 2,325
Other assets 30 33
Total assets 24,535 34,978
Current liabilities:    
Accounts payable 2,176 3,257
Accrued liabilities 316 107
Accrued legal and professional fees 64 63
Accrued payroll and related benefits 313 522
Accrued sales commissions 85 325
Accrued severance 14 328
Accrued restructuring 174 0
Accrued warranty reserve 187 331
Deferred revenue 16 0
Total current liabilities 3,345 4,933
Other liabilities 248 107
Total liabilities 3,593 5,040
STOCKHOLDERS' EQUITY    
Preferred stock, par value $0.0001 per share: Authorized: 2,000,000 shares in 2017 and 2016, 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 2017 and 2016, Issued and outstanding: 11,690,030 at September 30, 2016 and 11,648,978 at December 31, 2015 1 1
Additional paid-in capital 127,286 126,875
Accumulated other comprehensive income (loss) 1 (1)
Accumulated deficit (106,346) (96,937)
Total stockholders' equity 20,942 29,938
Total liabilities and stockholders' equity $ 24,535 $ 34,978