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Shareholders Equity (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2016
Common Stock      
Beginning balance, value $ 390 $ 392 $ 392
Beginning balance, shares 38,995,189 39,169,189 39,169,189
Stock option expense  
Purchase of shares for cancellation, value $ (2) $ (2)  
Purchase of shares for cancellation, shares (232,000) (174,000)  
Net loss  
Net unrealized gain on marketable equity securities  
Ending balance, value $ 388 $ 390 $ 388
Ending balance, shares 38,763,189 38,995,189 38,763,189
Additional Paid-In Capital      
Beginning balance, value $ 54,984 $ 55,063 $ 55,063
Stock option expense 29 2  
Purchase of shares for cancellation, value (116) (81)  
Net loss  
Net unrealized gain on marketable equity securities  
Ending balance, value 54,897 54,984 54,897
Retained Earnings / Accumulated Deficit      
Beginning balance, value (38,180) (37,691) (37,691)
Stock option expense  
Purchase of shares for cancellation, value  
Net loss (162) (489)  
Net unrealized gain on marketable equity securities  
Ending balance, value (38,342) (38,180) (38,342)
Other Comprehensive Income / Loss      
Beginning balance, value 218 111 111
Stock option expense  
Purchase of shares for cancellation, value  
Net loss  
Net unrealized gain on marketable equity securities 296 107  
Ending balance, value 514 218 514
Beginning balance, value 17,412 17,875 $ 17,875
Stock option expense 29 2  
Purchase of shares for cancellation, value $ (118) (83)  
Purchase of shares for cancellation, shares 232,000   406,000
Net loss $ (162) (489)  
Net unrealized gain on marketable equity securities 296 107  
Ending balance, value $ 17,457 $ 17,412 $ 17,457