Note 6 - Loans (Details) - Average Recorded Investment and Interest Income Recognized on Impaired Loans by Loan Class (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 6 - Loans (Details) - Average Recorded Investment and Interest Income Recognized on Impaired Loans by Loan Class [Line Items]
Average Recorded Investment	$ 40,535	$ 47,449
Interest Income Recognized	141	108
Commercial Portfolio Segment [Member]
Note 6 - Loans (Details) - Average Recorded Investment and Interest Income Recognized on Impaired Loans by Loan Class [Line Items]
Average Recorded Investment	6,738	3,454
Interest Income Recognized	1	5
Commercial Real Estate Other Receivable [Member]
Note 6 - Loans (Details) - Average Recorded Investment and Interest Income Recognized on Impaired Loans by Loan Class [Line Items]
Average Recorded Investment	20,343	29,121
Interest Income Recognized	107	81
Residential One To Four Family [Member]
Note 6 - Loans (Details) - Average Recorded Investment and Interest Income Recognized on Impaired Loans by Loan Class [Line Items]
Average Recorded Investment	12,204	14,387
Interest Income Recognized	24	19
Residential Real Estate and Home Equities [Member]
Note 6 - Loans (Details) - Average Recorded Investment and Interest Income Recognized on Impaired Loans by Loan Class [Line Items]
Average Recorded Investment	1,250	487
Interest Income Recognized	$ 9	$ 3