XML 18 R46.htm IDEA: XBRL DOCUMENT

Income Tax - Income Tax Provision (Benefit) on Income From Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal	$ 34,504us-gaap_CurrentFederalTaxExpenseBenefit	$ 25,625us-gaap_CurrentFederalTaxExpenseBenefit	$ 19,113us-gaap_CurrentFederalTaxExpenseBenefit
State	4,827	2,590	1,976
Current income tax expense benefit	39,331us-gaap_CurrentIncomeTaxExpenseBenefit	28,215us-gaap_CurrentIncomeTaxExpenseBenefit	21,089us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred	(3,804)us-gaap_DeferredIncomeTaxExpenseBenefit	(1,497)us-gaap_DeferredIncomeTaxExpenseBenefit	(215)us-gaap_DeferredIncomeTaxExpenseBenefit
Income tax expense benefit	$ 35,527us-gaap_IncomeTaxExpenseBenefit	$ 26,718us-gaap_IncomeTaxExpenseBenefit	$ 20,874us-gaap_IncomeTaxExpenseBenefit

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.