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Stock-Based Compensation (Detail) - (Table 5) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 20, 2017
Aug. 08, 2016
Jun. 30, 2017
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Outstanding at January 1, 2012       1,499,000
Outstanding at January 1, 2012 (in Dollars per share)       $ 29.72
Granted   150,000   900,000
Granted (in Dollars per share)       $ 37.08
Exercised       (236,000)
Exercised (in Dollars per share)       $ 23.90
Cancelled/Forfeited       (4,000)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price       $ 36.54
Outstanding at June 30, 2012     2,159,000 2,159,000
Outstanding at June 30, 2012 (in Dollars per share)     $ 33.41 $ 33.41
Outstanding at June 30, 2012     4 years 6 months  
Outstanding at June 30, 2012 (in Dollars)     $ 14,116 $ 14,116
Exercisable at June 30, 2012     958,000 958,000
Exercisable at June 30, 2012 (in Dollars per share)     $ 29.64 $ 29.64
Exercisable at June 30, 2012     2 years 7 months  
Exercisable at June 30, 2012 (in Dollars)     $ 9,875 $ 9,875
Subsequent Event [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Granted 150,000