Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Detail)

v3.6.0.2
Shareholders' Equity (Detail)
shares in Thousands
12 Months Ended
Feb. 24, 2016
USD ($)
shares
Dec. 31, 2016
USD ($)
vote
shares
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
shares
Stockholders Equity        
Amount authorized for stock repurchase program $ 50,000,000      
Common stock reserved (in shares) | shares   11,400    
Effective income tax rate   35.00%    
Income tax effect recorded for currency translation adjustments   $ 0    
Convertible Class B Stock        
Stockholders Equity        
Class B stock voting rights per share | vote   10    
Conversion ratio for Class B stock to common stock   1.00    
Treasury Stock        
Stockholders Equity        
Number of shares repurchased (in shares) | shares 523 523 0 0
Shares repurchased $ 17,600,000 $ 17,618,000 $ 0 $ 0