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Share-Based Compensation - Textual (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options exercised during period     32,050  
Unrecognized compensation cost related to non-vested share-based compensation arrangements $ 45   $ 45  
Weighted average period to recognize unrecognized share-based compensation cost     11 months 21 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value     $ 0  
Nonvested and expected to vest     93,621  
Share-based compensation expense 89 $ 61 $ 196 $ 184
2005 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period     5 years  
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Tax benefit of stock option compensation expense 10 $ 1 $ 38 $ 11
Restricted Common Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost related to non-vested share-based compensation arrangements 1,115   $ 1,115  
Granted (in shares)     54,650 9,268
Granted (in dollars per share)     $ 14.10 $ 12.95
Weighted average remaining period     3 years 11 months 20 days  
Intrinsic value $ 1,485   $ 1,485  
Restricted Common Stock [Member] | Annual Vesting [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percent     20.00%