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Significant Components of Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 27,188	$ 37,596	$ 57,429
State	2,164	2,268	4,288
Foreign	842	1,581	1,374
Total current	30,194	41,445	63,091
Deferred	10,121	11,212	4,223
Income taxes	$ 40,315	$ 52,657	$ 67,314

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.