Note 7 - Fair Value of Assets and Liabilities (Details) - Level 3 Fair Value Measurements for Non-recurring (USD $)	6 Months Ended
	Jun. 30, 2013
Unobservable Inputs (Member) | Impaired Loans (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Inputs	Discount to reflect current market conditions and estimated selling costs
Unobservable Inputs (Member) | OREO (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Unobservable Inputs	Discount to reflect current market conditions and estimated selling costs
Valuation Technique (Member) | Impaired Loans (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Technique(s)	Appraisals
Valuation Technique (Member) | OREO (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Technique(s)	Appraisals
Impaired Loans (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 2,617,000
Impaired Loans (Member)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	0.40
OREO (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	3,925,000
OREO (Member)
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 0.50
Minimum [Member] | Impaired Loans (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Minimum Range of Inputs	5.00%
Minimum [Member] | OREO (Member) | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Minimum Range of Inputs	0.00%