Note 6 - Investment Securities (Details) - The Amortized Cost And Estimated Fair Value Of The Securities Portfolio By Contractual Maturity (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
The Amortized Cost And Estimated Fair Value Of The Securities Portfolio By Contractual Maturity [Abstract]
Due in one year or less	$ 8,368
Due in one year or less	8,391
Due in one year or less	0
Due in one year or less	0
Due after one year through five years	123,957
Due after one year through five years	124,798
Due after one year through five years	0
Due after one year through five years	0
Due after five years through ten years	86,163
Due after five years through ten years	86,514
Due after five years through ten years	765
Due after five years through ten years	846
Due after ten years	17,625
Due after ten years	17,300
Due after ten years	3,049
Due after ten years	3,117
Mortgage-backed securities	371,428
Mortgage-backed securities	378,234
Mortgage-backed securities	0
Mortgage-backed securities	0
Total	607,541
Total	615,237
Total	3,814	765
Total	$ 3,963	$ 827