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Stock Based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2012
2017 Incentive Plan | Restricted Stock Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Maximum shares available under equity incentive plan 800,000   800,000    
Shares awarded under equity incentive plan     122,741    
Stock based compensation expense $ 397 $ 200 $ 577 $ 401  
Unrecognized compensation expense 3,000   $ 3,000    
Compensation cost not yet recognized, period for recognition     2 years 6 months    
2017 Incentive Plan | Time Based Restricted Stock Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares awarded under equity incentive plan     57,748    
2017 Incentive Plan | Performance Based Restricted Stock Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Shares awarded under equity incentive plan     64,993    
2012 Incentive Plan | Restricted Stock Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Maximum shares available under equity incentive plan         500,000
Shares awarded under equity incentive plan     0    
Stock based compensation expense 397 $ 200 $ 577 $ 401  
Unrecognized compensation expense $ 3,000   $ 3,000    
Compensation cost not yet recognized, period for recognition     2 years 6 months