Note 4 - Investment Securities (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 4 - Investment Securities (Details) [Line Items]
Proceeds from Sale of Available-for-sale Securities	$ 19,559,000	$ 44,600,000
Income Tax Benefit Related To Net Realized Gains Losses On Sales Of Securities	280,000	196,000
Available-for-sale Securities Pledged as Collateral	207,868,000	170,433,000
Available-for-sale Securities, Amortized Cost Basis	393,840,000	394,750,000
Available-for-sale Securities	388,670,000	401,502,000
Fair Value Inputs, Prepayment Rate	1.00%
Threshold for Identifying Banks with Trust Preferred Securities	15,000,000,000
Minimum Cost Saving for Refinance	2.00%
Bank Failure Rate	0.36%
Fair Value Inputs, Loss Severity	95.00%
Pooled Trust Preferred Securities [Member]
Note 4 - Investment Securities (Details) [Line Items]
Available-for-sale Securities, Amortized Cost Basis	3,519,000	3,519,000
Available-for-sale Securities	$ 2,069,000	$ 1,962,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	5
Pooled Trust Preferred Securities [Member] | Minimum [Member]
Note 4 - Investment Securities (Details) [Line Items]
Fair Value Inputs, Loss Severity	0.00%
Pooled Trust Preferred Securities [Member] | Maximum [Member]
Note 4 - Investment Securities (Details) [Line Items]
Fair Value Inputs, Loss Severity	100.00%