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Note 8 - Income Taxes (Details) - Provision for Income Taxes (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ (8,646,000)us-gaap_CurrentFederalTaxExpenseBenefit	$ 3,524,000us-gaap_CurrentFederalTaxExpenseBenefit	$ 5,503,000us-gaap_CurrentFederalTaxExpenseBenefit
Prior year over accrual	44,000
State	6,000
Deferred:
Federal	(3,877,000)	(107,000)	11,000
	$ (12,473,000)us-gaap_IncomeTaxExpenseBenefit	$ 3,417,000us-gaap_IncomeTaxExpenseBenefit	$ 5,514,000us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to 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.