Note 5. Income Taxes (Detail) - Major Components of Income Tax Provision (Benefit) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ 3,823	$ 10,063	$ (1,277)
State	752	6,694	33
Foreign	459	459	664
Total current income tax provision	5,034	17,216	(580)
Federal and state deferred income tax (benefit) provision	76,944	(140,748)	(7,100)
Total income tax (benefit) provision	$ 81,978	$ (123,532)	$ (7,680)