Note 12 - Income Taxes (Detail) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 2,100,000
Income Tax Refund Receivable	12,400,000
Income Taxes Receivable	39,300,000
Operating Loss Carryforwards	1,600,000
Unrecognized Tax Benefits		508,000
Unrecognized Tax Benefits, Period Increase (Decrease)	100,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	100,000
Net Operating Loss For Two Thousand Nine To Two Thousand Seven Tax Years Member
Income Taxes Receivable	11,200,000
Low Income Housing Tax Credits For Two Thousand Nine To Two Thousand Eight Tax Years Member
Income Taxes Receivable	$ 9,100,000

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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