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Stock-Based Compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Apr. 20, 2015
Mar. 02, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Apr. 30, 2015
Dec. 31, 2014
May. 31, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Payments for redemption of rights         $ 246,000 $ 0      
2004 Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Stock options outstanding     0   0        
2006 Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Shares authorized     3,500,000   3,500,000   500,000   3,000,000
Expiration period         10 years        
Shares available to be issued     669,105   669,105        
Stock options outstanding     984,666   984,666        
Shares of restricted stock outstanding     376,201   376,201        
The Rights Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Dividend, right               1  
Series A Preferred Stock [Member] | The Rights Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Exercise price of rights               $ 15  
Restricted Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation expense     $ 136,000 $ 368,000 $ 528,000 676,000      
Reduction in stock-based compensation expense     275,000   275,000        
Shares of restricted stock granted to employees   207,000              
Fair value per share of restricted stock   $ 6.68              
Award vesting rights, percentage   25.00%              
Award vesting period   4 years              
Unrecognized compensation expense related to restricted stock awards     1,865,000   $ 1,865,000        
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans         2 years 10 months 28 days        
Stock Options Grants [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation expense     0 106,000   212,000      
Common Stock Grants [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based compensation expense     $ 0 $ 0 $ 445,000 $ 245,000      
Common Stock Grants [Member] | February 2, 2015 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Grants of Common Stock Awards         35,764        
Shares Issued, Price Per Share     $ 6.85   $ 6.85        
Aggregate Grant Date Fair Value     $ 245,000   $ 245,000        
Common Stock Grants [Member] | March 24, 2015 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Grants of Common Stock Awards         31,845        
Shares Issued, Price Per Share     $ 6.28   $ 6.28        
Aggregate Grant Date Fair Value     $ 200,000   $ 200,000        
Preferred Share Rights [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Redemption price of right $ 0.01                
Payments for redemption of rights $ 246,000                
Preferred Share Rights [Member] | The Rights Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of securities called by each right               0.001