Note 14 - Income Taxes (Details) - Summary of Income Tax Expense Benefit (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current tax provision (benefit)
Federal	$ 1,631us-gaap_CurrentFederalTaxExpenseBenefit	$ 2,611us-gaap_CurrentFederalTaxExpenseBenefit	$ (374)us-gaap_CurrentFederalTaxExpenseBenefit
State	1,475		(1,210)
Total current	3,106us-gaap_CurrentIncomeTaxExpenseBenefit	2,611us-gaap_CurrentIncomeTaxExpenseBenefit	(1,584)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred tax provision (benefit)
Federal	28,630	(171,037)
State	5,596	(16,134)
Total deferred	34,226us-gaap_DeferredIncomeTaxExpenseBenefit	(187,171)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for (benefit from) income taxes	$ 37,332us-gaap_IncomeTaxExpenseBenefit	$ (184,560)us-gaap_IncomeTaxExpenseBenefit	$ (1,584)us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.