Note 11 - Income Taxes (Detail) - Income Tax Reconciliation (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income (loss) before taxes	$ 78,187	$ (16,473)	$ (12,281)
(Provision) benefit for income taxes at federal statutory rate	(27,365)	5,765	4,298
(Increases) decreases in tax resulting from:
State income taxes, net of federal benefit	(2,947)	615	372
Net deferred tax asset valuation (allowance) benefit	487,925	(6,415)	(4,687)
State net operating loss expirations	(4,201)
Other, net	(178)	91	574
Benefit for income taxes	$ 453,234	$ 56	$ 557
Effective tax rate		0.30%	4.50%