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Stock Plans - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options expiration period   10 years    
Stock options exercisable period after grant date   3 years    
Restricted stock and restricted stock unit vest period after grant date   3 years    
Average closing share price, period   1 year    
Cash proceeds from exercise of options   $ 12,476 $ 1,930 $ 6,926
Excess tax benefit (provision) related to stock plans   478 596 2,573
Aggregate intrinsic value of stock options exercisable   39,500    
Aggregate intrinsic value of stock options outstanding   50,000    
Total intrinsic value of stock options exercised   6,400 500 3,700
Unrecognized stock-based compensation expense   $ 6,700    
Weighted average period over which unrecognized stock-based compensation expense is expected to be recognized, in years   2 years    
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of target award based on achieving targeted performance conditions   0.00%    
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of target award based on achieving targeted performance conditions   200.00%    
Percentage of target award based on achieving targeted return on net assets based on which final number of shares to be issued for performance stock units   66.60%    
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Excess tax benefit (provision) related to stock plans   $ 600 (100) 1,000
Restricted Stock and Unit Activity        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of stock units vested   3,700 $ 5,300 $ 5,800
Performance Stock Unit Activity        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period (in years) 3 years      
Fair value of stock units vested   $ 1,800    
Management        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares reserved for future grants   1,368,638    
Non Employee Directors        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares reserved for future grants   139,657    
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options expiration period   10 years