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Note 1 - Significant Accounting Policies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($) shares	Mar. 31, 2015 shares	Dec. 31, 2015 USD ($)
Note 1 - Significant Accounting Policies (Details) [Line Items]
Number of Unconsolidated Business Trusts Formed to Issue Trust Preferred Securities	5
Interest Income on Commercial and Mortgage Loans, Discontinued Period	90 days
Maximum Delinquency Period for Consumer and Credit Card Loans to be Charged-off	120 days
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Mortgage (in Dollars) | $	$ 0.5		$ 1.3
Employee Stock Option [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	10,000	118,000
Mortgage Loans [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Servicing Asset (in Dollars) | $	$ 600.0
Restricted Stock [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights	150,000	101,000
Employee Stock Option [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	118,000	121,000
Core Deposits [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years

X

- Definition

Number of days past due when interest income on commercial and mortgage loans is discontinued unless the loans are well-secured and in process of collection.

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Maximum number of days delinquent for consumer and credit card loans to be charged off.

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The number of unconsolidated business trusts formed to issue trust preferred securities.

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Amount, after allowance for bad debt, of mortgage loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

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