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Income Taxes - Summary of Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 3,549	$ 2,296	$ (265)
State	5,107	5,744	2,122
Income tax expense (benefit), Current	8,656	8,040	1,857
Deferred:
Federal	67,414	65,551	58,584
State	1,872	1,685	2,862
Total deferred income tax expense	69,286	67,236	61,446
Total income tax expense	$ 77,942	$ 75,276	$ 63,303

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

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