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Federal Income Taxes - Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Taxes:
Federal deferred expense (benefit)	$ 171	$ (63)	$ 165	$ (57)
Current tax expense	0	0	0	0
Valuation allowance	0	10	(5,868)	(21)
Federal income tax provision per consolidated financial statements	$ 171	$ (53)	$ (5,703)	$ (78)

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.