Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets [Line Items]
Three months ended March 31, 2014 (actual)	$ 1,105,000	$ 1,219,000
Estimate for year ended December 31, 2014	4,270,000
2015	3,856,000
2016	3,504,000
2017	3,077,000
2018	1,921,000
2019	538,000
Core Deposits [Member]
Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets [Line Items]
Three months ended March 31, 2014 (actual)	1,015,000
Estimate for year ended December 31, 2014	3,946,000
2015	3,594,000
2016	3,292,000
2017	2,913,000
2018	1,892,000
2019	538,000
Mechant Draft Processing [Member]
Note 7 - Goodwill and Identifiable Intangible Assets (Details) - Estimated Future Amortization Expense for Identifiable Intangible Assets [Line Items]
Three months ended March 31, 2014 (actual)	90,000
Estimate for year ended December 31, 2014	324,000
2015	262,000
2016	212,000
2017	164,000
2018	$ 29,000