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Stockholders' Equity - Additional Information (Detail) - USD ($)
3 Months Ended
Oct. 19, 2016
Mar. 31, 2017
Mar. 31, 2016
May 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense   $ 1,800,000 $ 1,200,000  
Unrecognized compensation cost   $ 6,300,000    
Weighted average remaining period   3 years    
Fair market value of the shares   $ 800,000    
Stock repurchase program, authorized amount       $ 50,000,000
Stock repurchase program, expiration period Dec. 31, 2019      
Repurchased shares of common stock   0    
Cash dividends declared (in USD per share)   $ 0.15 $ 0.15  
Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock repurchase program, authorized amount $ 30,000,000      
2004 Plan [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares subject to outstanding awards (in shares)   750,576    
2014 Plan [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares of common stock available for delivery pursuant to the grant of awards (in shares)   750,000    
Restricted shares for vesting period   5 years