Note 6 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 6 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets [Line Items]
Twelve months ended December 31, 2013 (actual)	$ 4,704	$ 5,368	$ 5,975
Estimate for year ended December 31,
2014	4,270
2015	3,856
2016	3,504
2017	3,077
2018	1,921
Core Deposits [Member]
Note 6 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets [Line Items]
Twelve months ended December 31, 2013 (actual)	4,304
Estimate for year ended December 31,
2014	3,946
2015	3,594
2016	3,292
2017	2,913
2018	1,892
Mechant Draft Processing [Member]
Note 6 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets [Line Items]
Twelve months ended December 31, 2013 (actual)	400
Estimate for year ended December 31,
2014	324
2015	262
2016	212
2017	164
2018	$ 29