Note 9 - Fair Value Measurements and Disclosures (Details) - Quantitative Information about Assets Measured at Fair Value (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Appraisal Adjustments [Member] Impaired Loans [Member]		Jun. 30, 2014 Appraisal Adjustments [Member] Impaired Loans [Member] Minimum [Member]	Jun. 30, 2014 Appraisal Adjustments [Member] Impaired Loans [Member] Maximum [Member]	Jun. 30, 2014 Liquidation Expenses [Member] Impaired Loans [Member]		Jun. 30, 2014 Liquidation Expenses [Member] Impaired Loans [Member] Minimum [Member]	Jun. 30, 2014 Liquidation Expenses [Member] Impaired Loans [Member] Maximum [Member]	Jun. 30, 2014 Remaining Term [Member] Mortgage Servicing Rights [Member]	Jun. 30, 2014 Remaining Term [Member] Mortgage Servicing Rights [Member] Minimum [Member]	Jun. 30, 2014 Remaining Term [Member] Mortgage Servicing Rights [Member] Maximum [Member]	Jun. 30, 2014 Discount Rate [Member] Mortgage Servicing Rights [Member]	Jun. 30, 2014 Discount Rate [Member] Mortgage Servicing Rights [Member] Minimum [Member]	Jun. 30, 2014 Discount Rate [Member] Mortgage Servicing Rights [Member] Maximum [Member]	Jun. 30, 2014 Impaired Loans [Member]	Dec. 31, 2013 Impaired Loans [Member]	Jun. 30, 2014 Mortgage Servicing Rights [Member]	Dec. 31, 2013 Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 2,584	$ 3,626	$ 2,084								$ 500						$ 2,084	$ 3,107	$ 500	$ 519
Valuation Techniques			Appraisal of collateral (1)	[1]							Discounted cash flow
Unobservable Input			Appraisal adjustments (2)	[2]			Liquidation expenses (2)	[2]			Remaining term			Discount rate
Value or Range of Values					10.00%	40.00%			0.00%	10.00%					10.00%	12.00%
Mortgage servicing rights	$ 2,584	$ 3,626	$ 2,084								$ 500						$ 2,084	$ 3,107	$ 500	$ 519
Mortgage servicing rights			Appraisal of collateral (1)	[1]							Discounted cash flow
Mortgage servicing rights			Appraisal adjustments (2)	[2]			Liquidation expenses (2)	[2]			Remaining term			Discount rate
Mortgage servicing rights												3 years	29 years

[1] Fair value is primarily determined through appraisals of the underlying collateral by independent parties, which generally includes various level 3 inputs which are not always identifiable.

[2] Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range is presented as a percent of the initial appraised value.