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Note 2 - Fair Value of Financial Instruments (Details) (USD $)
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Fair Value Disclosures [Abstract]    
Selling Costs 10.00%  
Impaired Financing Receivable, with Related Allowance, Recorded Investment $ 4,160 $ 1,979,000
Impaired Financing Receivable, Related Allowance 878 1,979,000
Increase in Impairment Reserves 878  
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down   2,479,000
Other Real Estate 982 2,617,000
Other Real Estate, Gross 1,997 4,214,000
Real Estate Owned, Valuation Allowance 1,015 1,597,000
SEC Schedule III, Real Estate, Write-down or Reserve, Amount $ 73 $ 331,000