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Stock Based Compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized         3,000,000  
Tax benefit recorded to additional paid in capital     $ 20,000 $ 136,000    
Weighted Average Grant Date Fair Value of Restricted Stock            
Shares Paid for Tax Withholding for Share Based Compensation     17,180 19,533    
Forfeiture Rate, Minimum     3.50%      
Forfeiture Rate, Maximum     6.50%      
Restricted Stock [Member]            
Restricted Stock Rollforward, Shares            
Unvested balance at December 31, 2016     141,095      
Granted     156,953      
Vested     (77,318)      
Forfeited     (1,702)      
Unvested balance at Period End 219,028   219,028      
Weighted Average Grant Date Fair Value of Restricted Stock            
Unvested balance at December 31, 2015, USD per share $ 16.00   $ 16.00   $ 16.00 $ 16.79
Granted, USD per share     15.51      
Vested, USD per share     16.31      
Forfeited, USD per share     22.68      
Unvested balance at Period End, USD per share $ 16.00   $ 16.00      
Unrecognized compensation expense   $ 2,142,000   $ 2,142,000 $ 2,957,000  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 1 year 8 months          
Restricted Stock [Member] | Selling, General and Administrative Expenses [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation costs $ 639,000 $ 526,000 $ 970,000 $ 791,000