Note 5 - Loans (Details) - Troubled Debt Restructurings with Subsequent Payment Default (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Note 5 - Loans (Details) - Troubled Debt Restructurings with Subsequent Payment Default [Line Items]
Troubled debt restructurings with payment default, number of loans	2
Troubled debt restructurings with payment default, recorded investment	$ 2,597
Non Farm Nonresidential [Member]
Note 5 - Loans (Details) - Troubled Debt Restructurings with Subsequent Payment Default [Line Items]
Troubled debt restructurings with payment default, number of loans	2
Troubled debt restructurings with payment default, recorded investment	2,597
Commercial Real Estate Loans [Member]
Note 5 - Loans (Details) - Troubled Debt Restructurings with Subsequent Payment Default [Line Items]
Troubled debt restructurings with payment default, number of loans	2
Troubled debt restructurings with payment default, recorded investment	$ 2,597