Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) [Line Items]
Nonaccrual Designation as Impaired Threshold	$ 250
Threshold period for considering loans as special mention or classified	75 days
Financing Receivable, Modifications, Recorded Investment	7,152	7,423	7,043
Financing Receivable Modifications Impairment Accrued	$ 30
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	4
Special Mention [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) [Line Items]
Increase in Percentage of Allocation Loans Rated Special Mention	50.00%
Classified Loans [Member]
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) [Line Items]
Increase in Percentage of Allocation Loans Rated Classified	100.00%