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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 (48) (48)
Net loss (409) (409)
Non-cash stock based compensation 117 117
Balance at Mar. 31, 2018 $ 1 $ 13 (456) 134,869 (129,528) 297 5,196
Balance, shares at Mar. 31, 2018 156,000 2,521,000          
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 33 33
Net loss (313) (313)
Issuance of common stock upon vesting of restricted stock units (5) (5)
Issuance of common stock upon vesting of restricted stock units, shares 3          
Non-cash stock based compensation 59 59
Balance at Mar. 31, 2019 $ 1 $ 14 $ (456) $ 136,606 $ (129,707) $ 233 $ 6,691
Balance, shares at Mar. 31, 2019 156,000 2,878,000