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Summary of Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current      
Federal $ 21,363 $ 5,939 $ 22,880
State and local 2,900 445 3,817
Foreign 284 249 205
Current income tax expense, total 24,547 6,633 26,902
Deferred      
Federal 16,538 23,600 15,920
State and local (346) 191 627
Foreign (106) (115) (4)
Deferred income tax expense, total 16,086 23,676 16,543
Total provision $ 40,633 $ 30,309 $ 43,445