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Calculation of Basic and Diluted Earnings per Share (in thousands, except per share amounts) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Numerator:    
Net Income (Loss) $ (1,616) $ 5,028
Numerator for basic earnings per share - income (loss) available to common shareholders (1,616) 5,028
Effect of dilutive securities:    
6% Convertible Debenture Interest Expense $ 0 $ 22
Numerator for diluted earnings per share - income (loss) available to common shareholders after assumed conversions $ (1,616) $ 5,050
Denominator:    
Denominator for basic earnings per share - weighted-average shares 3,002 2,781
Effect of dilutive securities    
Employee stock options 0 30
Warrants 0 447
6% Convertible Debentures 0 136
Dilutive potential common shares 0 613
Denominator for diluted earnings per share - weighted-average shares and assumed conversions 3,002 3,394
Basic earnings per common share $ (0.54) $ 1.81
Diluted earnings per common share $ (0.54) $ 1.49