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Note 11 - Federal Income Taxes (Details) - Consolidated Income Tax Expense - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Income Tax Expense [Abstract]
Current expense	$ 7,399,000	$ 3,359,000	$ 0
Deferred expense	4,592,000	4,506,000	8,092,000
Change in valuation allowance	(180,000)	0	0
Tax expense	$ 11,811,000	$ 7,865,000	$ 8,092,000

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

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