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Income Taxes - Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Federal:
Current	$ 72us-gaap_CurrentFederalTaxExpenseBenefit	$ 10us-gaap_CurrentFederalTaxExpenseBenefit
Deferred	193
Gross Federal	265	10
State:
Current	49	25
Deferred	4	1
Gross State	53	26
Income tax expense	$ 318us-gaap_IncomeTaxExpenseBenefit	$ 36us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to 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.