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Equity Based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Apr. 30, 2007
USD ($)
executives
$ / shares
shares
Mar. 31, 2016
USD ($)
shares
Mar. 31, 2015
USD ($)
shares
Dec. 31, 2015
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for future grants under 2014 Incentive Stock Plan   1,054,612    
Compensation expense, recognition period   1 year 4 months 17 days    
Performance-based awards outstanding (in shares)   550,000   550,000
Outstanding performance based stock award shares earned (in shares)   76,502    
Stock-based compensation expense | $   $ 1,723 $ 2,681  
Total unrecognized compensation cost | $   $ 3,100    
Stock option expiration period   10 years    
Estimated forfeiture rate used for recording stock-based compensation expense   5.00%    
Options granted   0 0  
Shares, aggregate grant date fair value of stock options | $ $ 1,430      
Vesting Range One [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of stock options exercise price vested 25.00%      
Vesting Range Two [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of stock options exercise price vested 30.00%      
Vesting Range Three [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of stock options exercise price vested 35.00%      
2004 Incentive Stock Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options granted 260,000      
Shares, Exercise price (in usd per share) | $ / shares $ 25.95      
Number of senior executives | executives 8      
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option, vesting period   3 years    
Performance-based awards outstanding (in shares)   155,305    
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option, vesting period   3 years    
Minimum [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option, vesting period   1 year    
Compensation expense, recognition period   1 year    
Maximum [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option, vesting period   3 years    
Compensation expense, recognition period   3 years