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Consolidated Statements of Shareholders' Equity - USD ($)
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 $ 1,000 $ 13,000 $ (456,000) $ 134,752,000 $ (129,119,000) $ 345,000 $ 5,536,000
Balance, shares at Dec. 31, 2017 156,000 2,521,000          
Foreign currency translation adjustment (145,000) (145,000)
Net proceeds from issuance of common stock related to registered direct offering $ 1,000 1,374,000 1,375,000
Net proceeds from issuance of common stock related to registered direct offering, shares 345,000          
Issuance of common stock upon vesting of restricted stock units (17,000) (17,000)
Issuance of common stock upon vesting of restricted stock units, shares 9,000          
Dividend paid to Series A preferred stockholders (16,000) (16,000)
Dividend paid to Series A preferred stockholders, shares          
Non-cash stock based compensation 443,000 443,000
Net loss (259,000) (259,000)
Balance at Dec. 31, 2018 $ 1,000 $ 14,000 (456,000) 136,552,000 (129,394,000) 200,000 6,917,000
Balance, shares at Dec. 31, 2018 156,000 2,875,000          
Foreign currency translation adjustment 68,000 68,000
Issuance of common stock upon vesting of restricted stock units (37,000) (37,000)
Issuance of common stock upon vesting of restricted stock units, shares 26,000          
Dividend paid to Series A preferred stockholders (16,000) (16,000)
Dividend paid to Series A preferred stockholders, shares          
Non-cash stock based compensation 206,000 206,000
Net loss (2,047,000) (2,047,000)
Balance at Dec. 31, 2019 $ 1,000 $ 14,000 $ (456,000) $ 136,721,000 $ (131,457,000) $ 268,000 $ 5,091,000
Balance, shares at Dec. 31, 2019 156,000 2,901,000