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Income Tax - Income Tax Provision (Benefit) on Income From Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Federal	$ 25,625	$ 19,113	$ 17,239
State	2,590	1,976	2,233
Current income tax expense benefit	28,215	21,089	19,472
Deferred	(1,497)	(215)	(2,916)
Income tax expense benefit	$ 26,718	$ 20,874	$ 16,556

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.