Note 3. Income Taxes (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Deferred Federal Income Tax Expense (Benefit)	$ 720,000	$ 14,938,000	$ 3,697,000	$ 38,319,000
Deferred Tax Assets, Net of Valuation Allowance	$ 112,100,000		$ 112,100,000