Note 7 - Segment Information (Details) - Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net interest income	$ 8,930us-gaap_InterestIncomeExpenseNet	$ 8,782us-gaap_InterestIncomeExpenseNet
Provision expense	(78)us-gaap_ProvisionForLoanAndLeaseLosses	494us-gaap_ProvisionForLoanAndLeaseLosses
Noninterest income	3,489us-gaap_NoninterestIncome	4,118us-gaap_NoninterestIncome
Noninterest expense	7,427us-gaap_NoninterestExpense	7,295us-gaap_NoninterestExpense
Tax expense	1,446us-gaap_IncomeTaxExpenseBenefit	1,547us-gaap_IncomeTaxExpenseBenefit
Net income	3,624us-gaap_NetIncomeLoss	3,564us-gaap_NetIncomeLoss
Assets	867,985us-gaap_Assets	825,535us-gaap_Assets	778,668us-gaap_Assets
Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	7,561	7,421
Provision expense	(175)	375
Noninterest income	3,043	3,573
Noninterest expense	6,707	6,611
Tax expense	1,107	1,173
Net income	2,965	2,835
Assets	855,500	812,584
Consumer Finance [Member]
Segment Reporting Information [Line Items]
Net interest income	1,369	1,361
Provision expense	97	119
Noninterest income	446	545
Noninterest expense	720	684
Tax expense	339	374
Net income	659	729
Assets	$ 12,485	$ 12,951

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The net amount of operating interest income (expense).

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Total aggregate amount of all noninterest expense.

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Amount of expense related to estimated loss from loan and lease transactions.

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