Note 3. Income Taxes (Detail) - Major components of income tax provision (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Current:
Federal	$ 3,672
State	551
Foreign	115	115
Total current income tax provision	4,338	115
Deferred:
Federal and state deferred income tax provision	2,977	23,381
Total income tax provision	$ 7,315	$ 23,496