Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Summary of Basic and Diluted Weighted-Average Shares Outstanding (Detail)

v3.2.0.727
Earnings Per Share - Summary of Basic and Diluted Weighted-Average Shares Outstanding (Detail)
shares in Thousands
 3 Months Ended 6 Months Ended
Jul. 04, 2015
shares
Jun. 28, 2014
shares
Jul. 04, 2015
shares
Jun. 28, 2014
shares
Earnings Per Share [Abstract]        
Weighted average shares - Basic (in shares) 22,100 21,684 22,055 21,616
Net effect of dilutive stock options (in shares) 736 954 765 1,032
Weighted average shares - Diluted (in shares) 22,836 22,638 22,820 22,648
Earnings Per Share        
Date of payment of dividend to shareholders     Sep. 05, 2014  
Convertible Class B Stock        
Earnings Per Share        
Stock distribution     0.20