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Note 10 - Other Borrowings and Subordinated Debentures (Details Textual) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2015	Dec. 31, 2016
Repayments of Long-term Debt	$ 36.0
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months		$ 180.0
Advances from Federal Home Loan Banks		225.2
Advances from Federal Home Loan Bank Available		1,300.0
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		$ 1,700.0
Federal Home Loan Bank Advances [Member]
Debt Instrument, Term		1 year
Correspondent Banks [Member]
Debt Instrument, Face Amount	$ 52.3
Debt Instrument, Interest Rate, Stated Percentage	3.85%
Debt Instrument, Term	10 years
Debt Instrument, Periodic Payment Terms, Balloon Payment Term	5 years

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Advances from Federal Home Loan Bank available.

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Period of time between issuance and balloon payment due of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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-Publisher FASB
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-SubTopic 470
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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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