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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2016
Sep. 30, 2016
Mar. 31, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
May 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Approved and authorized maximum number of shares to be issued (in shares)             3,000,000
Compensation expense related to stock based awards outstanding   $ 540   $ 439 $ 1,800 $ 1,700  
Exercise of stock options (in shares)   0   0 3,924 3,970  
Proceeds received upon exercise of stock options         $ 8 $ 28  
Total unrecognized compensation expense   $ 3,200     $ 3,200    
Share-based compensation cost not yet recognized, period for recognition     2 years        
Stock options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options, expiration period     10 years        
Options, granted in period (in shares) 519,314            
Forfeiture rate         5.50%    
Stock options | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options, vesting period     3 years        
Stock options | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options, vesting period     5 years        
Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Forfeiture rate         5.50%    
Officers and Executives | Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted in period (in shares) 384,359            
Weighted average grant date fair value (in dollars per share) $ 4.94            
Executive Officer | Performance Shares              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Granted in period (in shares) 68,977            
Weighted average grant date fair value (in dollars per share) $ 4.94            
2011 LTIP | Stock options              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Forfeiture rate         3.20%