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Capital Stock - Additional Information (Detail) - USD ($)
12 Months Ended
Mar. 08, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Apr. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock repurchase program, authorized amount         $ 10,000,000
Treasury Stock Repurchase (in shares)   0 0 0  
Total intrinsic value of stock options exercised   $ 1,848,000 $ 639,000 $ 3,103,000  
Unrecognized stock option compensation cost   $ 1,500,000      
Weighted-average per share grant date fair value of stock options granted   $ 5.43 $ 4.68 $ 9.73  
Stock compensation expense   $ 2,942,000 $ 5,286,000 $ 4,493,000  
Stock compensation expense, stock option   1,400,000 2,200,000 2,500,000  
Stock compensation expense, Performance based and restricted share   1,500,000 800,000 300,000  
Stock compensation expense, stock awards granted   $ 32,000 $ 2,200,000 $ 1,700,000  
Preferred stock Series A          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Preferred stock, shares authorized   100 100    
Preferred stock, issued   0 0    
Preferred stock, outstanding   0 0    
Preferred stock Series B          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Preferred stock, shares authorized   2,000,000 2,000,000    
Preferred stock, issued   0 0    
Preferred stock, outstanding   0 0    
Dividend Declared | Subsequent Event          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Dividend declaration date Mar. 08, 2017        
Quarterly dividend declared $ 0.0425        
Dividend payable date May 15, 2017        
Dividend declared, date of record May 01, 2017        
Long Term Incentive Plan 2000          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant   414,352      
Long Term Incentive Plan 2000 | After Amendment          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant   4,850,000      
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average recognition period   1 year 9 months 18 days      
Stock Options | Minimum | Long Term Incentive Plan 2000          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options expiration period   5 years      
Stock Options | Maximum | Long Term Incentive Plan 2000          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options expiration period   10 years      
Vesting period   5 years      
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average recognition period   2 years 7 months 6 days      
Total fair value of restricted stock vested   $ 712,000      
Restricted Stock | Maximum | Long Term Incentive Plan 2000          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   4 years      
Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   3 years      
Weighted-average recognition period [1]   1 year 7 months 6 days      
Number of shares range percentage   150.00%      
Performance Shares | Long Term Incentive Plan 2000          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period   3 years      
[1] Represents the target number of shares to be issued for each performance-based award.