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Stock Based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2012
2017 Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Remaining shares available for future awards 594,734        
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  
Stock based compensation expense $ 397 $ 180      
Unrecognized compensation expense $ 2,500        
Compensation cost not yet recognized, period for recognition 3 years        
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 17,729        
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 62,919        
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
Additional shares available to be granted     0    
Stock based compensation expense $ 397 $ 180      
Unrecognized compensation expense $ 2,500        
Compensation cost not yet recognized, period for recognition 3 years