Summary of Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Deferred income tax expense (benefit):
Total income tax expense (benefit)	$ 317	$ (7)	$ 527	$ 86
Continuing Operations
Current income tax expense:
Federal	291		451
State	22		71	76
Total current income tax expense	313		522	76
Deferred income tax expense (benefit):
Federal	0	0	0	0
State	4	(7)	5	10
Total deferred income tax expense (benefit)	4	(7)	5	10
Total income tax expense (benefit)	$ 317	$ (7)	$ 527	$ 86

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.