Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated future amortization expense for identifiable intangible assets (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated future amortization expense for identifiable intangible assets [Line Items]
Six months ended June 30, 2013 (actual)	$ 1,165	$ 1,339	$ 2,384	$ 2,741
Estimate for year ended December 31, 2013	4,704		4,704
2014	4,270		4,270
2015	3,856		3,856
2016	3,504		3,504
2017	3,077		3,077
2018	1,921		1,921
Core Deposits [Member]
Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated future amortization expense for identifiable intangible assets [Line Items]
Six months ended June 30, 2013 (actual)			2,176
Estimate for year ended December 31, 2013	4,304		4,304
2014	3,946		3,946
2015	3,594		3,594
2016	3,292		3,292
2017	2,913		2,913
2018	1,892		1,892
Mechant Draft Processing [Member]
Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated future amortization expense for identifiable intangible assets [Line Items]
Six months ended June 30, 2013 (actual)			208
Estimate for year ended December 31, 2013	400		400
2014	324		324
2015	262		262
2016	212		212
2017	164		164
2018	$ 29		$ 29