Note 1 - Significant Accounting Policies (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
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)	$ 3.4		$ 1.6
Restricted Stock [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights	101,000	63,000
Employee Stock Option [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	121,000	6,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	118,000	55,000
Mortgage Loans [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Servicing Asset (in Dollars)	$ 589
Core Deposits [Member]
Note 1 - Significant Accounting Policies (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years