Federal Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated income tax expense (benefit)
Current expense (benefit)	$ 0	$ 0	$ 0
Deferred expense (benefit)	5,636,000	0	(47,000)
Valuation allowance - change in estimate	0	(27,361,000)	0
Tax expense (benefit)	$ 5,636,000	$ (27,361,000)	$ (47,000)