Income Taxes - (Benefit) Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Current, Federal	$ 99	$ (2,373)	$ 289	$ (4,513)
Current, State
Total current	99	(2,373)	289	(4,513)
Deferred, Federal		1,785		3,317
Deferred, State
Total deferred		1,785		3,317
Total	$ 99	$ (588)	$ 289	$ (1,196)

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.