Note 5 - Loans (Details) - Loans Modified (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans	4	2	4	3
Financial Receivable-Pre-modification outstanding recorded investmen	$ 3,548	$ 2,619	$ 3,548	$ 2,679
Financial Receivable-Post-modification outstanding recorded investment	2,248	2,619	2,248	2,679
Construction, Land Development and Other Land Loan [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans				1
Financial Receivable-Pre-modification outstanding recorded investmen				60
Financial Receivable-Post-modification outstanding recorded investment				60
Non Farm Nonresidential [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans	1	2	1	2
Financial Receivable-Pre-modification outstanding recorded investmen	883	2,619	883	2,619
Financial Receivable-Post-modification outstanding recorded investment	883	2,619	883	2,619
Commercial Real Estate Loans [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans	1	2	1	3
Financial Receivable-Pre-modification outstanding recorded investmen	883	2,619	883	2,679
Financial Receivable-Post-modification outstanding recorded investment	883	2,619	883	2,679
Commercial and Industrial [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans	3		3
Financial Receivable-Pre-modification outstanding recorded investmen	2,665		2,665
Financial Receivable-Post-modification outstanding recorded investment	1,365		1,365
Rate Concessions [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans				1
Financial Receivable-Pre-modification outstanding recorded investmen				60
Financial Receivable-Post-modification outstanding recorded investment				60
Term Concessions [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans	1	2	1	2
Financial Receivable-Pre-modification outstanding recorded investmen	883	2,619	883	2,619
Financial Receivable-Post-modification outstanding recorded investment	883	2,619	883	2,619
Term,Term and Principal Concession [Member]
Note 5 - Loans (Details) - Loans Modified [Line Items]
Financial Receivable-Number of loans			3
Financial Receivable-Pre-modification outstanding recorded investmen			2,665
Financial Receivable-Post-modification outstanding recorded investment			$ 1,365