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Stock Compensation (Detail Textuals) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum number of options granted to purchase shares (in shares)   601,627   601,627  
Special stock dividend, rate percent 4.00%        
Date of dividend payment Jul. 01, 2017        
Stock based compensation expense   $ 1,000 $ 5,000 $ 3,000 $ 16,000
Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options vesting period       4 years  
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options vesting period       5 years