Note 2 - Investment Securities (Details) - The Amortized Cost and Estimated Fair Value of the Securities Portfolio by Contractual Maturity (USD $)	Dec. 31, 2013	Dec. 31, 2012
The Amortized Cost and Estimated Fair Value of the Securities Portfolio by Contractual Maturity [Abstract]
Due in one year or less	$ 3,357,000
Due in one year or less	3,367,000
Due in one year or less	0
Due in one year or less	0
Due after one year through five years	115,652,000
Due after one year through five years	115,449,000
Due after one year through five years	0
Due after one year through five years	0
Due after five years through ten years	100,109,000
Due after five years through ten years	97,321,000
Due after five years through ten years	765,000
Due after five years through ten years	827,000
Due after ten years	17,209,000
Due after ten years	15,840,000
Due after ten years	0
Due after ten years	0
Mortgage-backed securities	379,986,000
Mortgage-backed securities	378,766,000
Mortgage-backed securities	0
Mortgage-backed securities	0
Total	616,313,000
Total	610,743,000
Total	765,000	820,000
Total	$ 827,000	$ 956,000