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Shareholders Equity - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Common Stock    
Beginning balance, value $ 387 $ 392
Beginning balance, shares 38,693,589 39,169,189
Purchase of shares for cancellation, value   $ (2)
Purchase of shares for cancellation, shares (8,400) (174,000)
Ending balance, value $ 387 $ 390
Ending balance, shares 38,685,189 38,995,189
Additional Paid-In Capital    
Beginning balance, value $ 55,790 $ 55,063
Stock option expense   2
Purchase of shares for cancellation, value (6) (81)
Ending balance, value 55,784 54,984
Retained Earnings / Accumulated Deficit    
Beginning balance, value (39,401) (37,691)
Net loss (13) (489)
Ending balance, value (39,414) (38,180)
Other Comprehensive Income / Loss    
Beginning balance, value 712 111
Net unrealized gain (loss) on marketable equity securities (93) 107
Ending balance, value 619 218
Beginning balance, value 17,488 17,875
Stock option expense   2
Purchase of shares for cancellation, value $ (6) $ (83)
Purchase of shares for cancellation, shares 8,400 174,000
Net loss $ (13) $ (489)
Net unrealized gain (loss) on marketable equity securities (93) 107
Ending balance, value $ 17,376 $ 17,412