XML 47 R34.htm IDEA: XBRL DOCUMENT v3.2.0.727
Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation $ 300,000 $ 300,000 $ 800,000 $ 900,000
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock granted     101,702  
Restricted stock granted, grant date fair value     $ 10.87  
Restricted stock award, vesting period     2 years  
Restricted stock award vest grant over period     1 year  
Unrecognized compensation cost $ 500,000   $ 500,000  
Nonvested restricted shares outstanding 104,438   104,438  
Unrecognized compensation cost, recognition period     21 months  
Restricted Stock [Member] | Immediately on the Grant Date [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock award, percentage vested on grant date     33.33%  
Restricted Stock [Member] | First Anniversary following the Grant Date [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock award, percentage vested on grant date     33.33%  
Restricted Stock [Member] | Second Anniversary following the Grant Date [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock award, percentage vested on grant date     33.33%