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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 |  |  |  |  |

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