Income Taxes - Provisions for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Current:
Federal	$ 158us-gaap_CurrentFederalTaxExpenseBenefit	$ 980us-gaap_CurrentFederalTaxExpenseBenefit
State	847	675
Total Current	1,005us-gaap_CurrentIncomeTaxExpenseBenefit	1,655us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	2,846	5,393
State	330	606
Total Deferred	3,176us-gaap_DeferredIncomeTaxExpenseBenefit	5,999us-gaap_DeferredIncomeTaxExpenseBenefit
Provisions for income taxes	$ 4,181us-gaap_IncomeTaxExpenseBenefit	$ 7,654us-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 federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred 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.