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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Series A Cumulative Convertible Preferred Stock [Member]
Common Stock [Member]
Treasury Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income [Member]
Total
Balance at Dec. 31, 2017 $ 1 $ 13 $ (456) $ 134,752 $ (129,119) $ 345 $ 5,536
Balance, shares at Dec. 31, 2017 156,000 2,521,000          
Foreign currency translation adjustment (52) (52)
Net income (loss) (311) (311)
Net proceeds from common stock related to registered direct offering $ 1 1,374 1,375
Net proceeds from common stock related to registered direct offering, shares 345,000          
Issuance of common stock upon vesting of restricted stock units (12) (12)
Issuance of common stock upon vesting of restricted stock units, shares 6,000          
Cash paid to Series A preferred stockholders for semi-annual dividend (8) (8)
Non-cash stock based compensation 368 368
Balance at Sep. 30, 2018 $ 1 $ 14 (456) 136,482 (129,438) 293 6,896
Balance, shares at Sep. 30, 2018 156,000 2,872,000          
Balance at Jun. 30, 2018 $ 1 $ 14 (456) 136,383 (129,660) 254 6,536
Balance, shares at Jun. 30, 2018 156,000 2,866,000          
Foreign currency translation adjustment 39 39
Net income (loss) 222 222
Net proceeds from common stock related to registered direct offering (6) (6)
Issuance of common stock upon vesting of restricted stock units $ (12) $ (12)
Issuance of common stock upon vesting of restricted stock units, shares 6,000
Cash paid to Series A preferred stockholders for semi-annual dividend
Non-cash stock based compensation 117 117
Balance at Sep. 30, 2018 $ 1 $ 14 (456) 136,482 (129,438) 293 6,896
Balance, shares at Sep. 30, 2018 156,000 2,872,000          
Balance at Dec. 31, 2018 $ 1 $ 14 (456) 136,552 (129,394) 200 6,917
Balance, shares at Dec. 31, 2018 156,000 2,875,000          
Foreign currency translation adjustment 47 47
Net income (loss) (754) (754)
Net proceeds from common stock related to registered direct offering, shares            
Issuance of common stock upon vesting of restricted stock units (29) (29)
Issuance of common stock upon vesting of restricted stock units, shares 20,000          
Cash paid to Series A preferred stockholders for semi-annual dividend (8) (8)
Non-cash stock based compensation 172 172
Balance at Sep. 30, 2019 $ 1 $ 14 (456) 136,695 (130,156) 247 6,345
Balance, shares at Sep. 30, 2019 156,000 2,895,000          
Balance at Jun. 30, 2019 $ 1 $ 14 (456) 136,648 (129,805) 265 6,667
Balance, shares at Jun. 30, 2019 156,000 2,882,000          
Foreign currency translation adjustment (18) (18)
Net income (loss) (351) (351)
Issuance of common stock upon vesting of restricted stock units (16) (16)
Issuance of common stock upon vesting of restricted stock units, shares 13,000          
Cash paid to Series A preferred stockholders for semi-annual dividend
Non-cash stock based compensation 63 63
Balance at Sep. 30, 2019 $ 1 $ 14 $ (456) $ 136,695 $ (130,156) $ 247 $ 6,345
Balance, shares at Sep. 30, 2019 156,000 2,895,000