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Stock-Based Compensation (Detail) - (Table 4) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jul. 20, 2017
Mar. 01, 2017
Jan. 03, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Outstanding at January 1, 2012       1,499,000 2,016,000 3,428,000
Outstanding at January 1, 2012 (in Dollars per share)       $ 29.72 $ 23.51 $ 19.48
Granted (150,000) (750,000) (100,000) (1,062,000) (262,000) (69,000)
Granted (in Dollars per share)       $ 37.55 $ 33.86 $ 36.59
Exercised       (655,000) (746,000) (1,460,000)
Exercised (in Dollars per share)       $ 24.73 $ 14.36 $ 14.59
Cancelled/Forfeited       (9,000) (33,000) (21,000)
Outstanding at June 30, 2012       1,897,000 1,499,000 2,016,000
Outstanding at June 30, 2012 (in Dollars per share)       $ 35.80 $ 29.72 $ 23.51
Outstanding at June 30, 2012       4 years 11 months    
Outstanding at June 30, 2012 (in Dollars)       $ 20,680    
Exercisable at June 30, 2012       656,000    
Exercisable at June 30, 2012 (in Dollars per share)       $ 33.67    
Stock based compensation, shares exercisable, weighted average remaining contractual term       3 years 1 month    
Exercisable at June 30, 2012 (in Dollars)       $ 8,540    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price       $ 35.23 $ 30.59 $ 28.49