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Share-Based Compensation - Textual (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options exercised during period 21,590  
Unrecognized compensation cost related to non-vested share-based compensation arrangements $ 70  
Weighted average period to recognize unrecognized share-based compensation cost 1 year 5 months 20 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 57,259  
Share-based compensation expense $ 52 $ 61
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 $ 12 $ 1
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 $ 602  
Granted (in shares) 8,850 9,268
Granted (in dollars per share) $ 11.30 $ 10.79
Weighted average remaining period 3 years 7 months 7 days  
Intrinsic value $ 637  
Restricted Common Stock [Member] | Annual Vesting [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award vesting percent 20.00%