Note 5 - Income Taxes (Detail) - Major Components of Income Tax Provision (Benefit) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
Federal	$ 7,411	$ 3,823	$ 10,063
State	(325)	752	6,694
Foreign	459	459	459
Total current income tax provision	7,545	5,034	17,216
Federal and state deferred income tax (benefit) provision	1,334	76,944	(140,748)
Total income tax (benefit) provision	$ 8,879	$ 81,978	$ (123,532)