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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT (USD $) In Thousands, unless otherwise specified | PREFERRED STOCK USD ($) | COMMON STOCK USD ($) | TREASURY SHARES | ADDITIONAL PAID-IN-CAPITAL USD ($) | ACCUMULATED DEFICIT USD ($) | ACCUMULATED OTHER COMPREHENSIVE LOSS USD ($) | Total USD ($)
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Balance at Dec. 31, 2012 | $ 2,006 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | $ 122 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | $ 55,837 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (59,047)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (107)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Balance (in shares) at Dec. 31, 2012 | 1,034 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 12,182 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (362)us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |
Stock-based compensation |  |  |  | 189 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Preferred stock dividends declared, net of waived penalties by shareholders |  |  |  | (121)us-gaap_DividendsPreferredStock / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  | (151)us-gaap_DividendsPreferredStock
Net income (loss) |  |  |  |  | 623 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | 623 us-gaap_NetIncomeLoss
Balance at Dec. 31, 2013 | 2,006 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 122 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | 55,905 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (58,424)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (107)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (860)us-gaap_StockholdersEquity
Balance (in shares) at Dec. 31, 2013 | 1,034 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 12,182 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (362)us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |  |
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |
Exercise of stock options |  | 2 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | 75 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Exercise of stock options (in shares) |  | 193 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  | 193 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Conversion of preferred stock to common | (163)us-gaap_StockholdersEquityPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 1 us-gaap_StockholdersEquityPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | 162 us-gaap_StockholdersEquityPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Conversion of preferred stock to common (in shares) | (85)us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 96 us-gaap_StockIssuedDuringPeriodSharesPeriodIncreaseDecrease / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Stock-based compensation |  |  |  | 375 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Preferred stock dividends declared, net of waived penalties by shareholders |  |  |  | (135)us-gaap_DividendsPreferredStock / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  | (141)us-gaap_DividendsPreferredStock
Net income (loss) |  |  |  |  | (274)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  | (274)us-gaap_NetIncomeLoss
Balance at Dec. 31, 2014 | $ 1,843 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | $ 125 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | $ 56,382 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (58,698)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (107)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (817)us-gaap_StockholdersEquity
Balance (in shares) at Dec. 31, 2014 | 949 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 12,471 us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (362)us-gaap_SharesOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  |  |  |

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