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Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current $ 493,913,000 $ 476,908,000 $ 407,345,000
Non-accrual loans 493,913,000 476,908,000 407,345,000
Loans 511,000 866,000  
Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 479,220,000 463,914,000  
Non-accrual loans 479,220,000 463,914,000  
Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 7,061,000 4,049,000  
Non-accrual loans 7,061,000 4,049,000  
Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 7,632,000 8,945,000  
Non-accrual loans 7,632,000 8,945,000  
Loans 511,000 866,000  
Construction Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 8,878,000 3,096,000  
Non-accrual loans 8,878,000 3,096,000  
Construction to Permanent Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current   10,627,000  
Non-accrual loans   10,627,000  
Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 4,015,000 5,469,000  
Performing (accruing) loans current 493,402,000 476,042,000  
Performing (accruing) loans 489,387,000 470,573,000  
Non-accrual loans 493,402,000 476,042,000  
Performing Financial Instruments [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 4,015,000 3,613,000  
Performing (accruing) loans current 479,220,000 463,914,000  
Performing (accruing) loans 475,205,000 460,301,000  
Non-accrual loans 479,220,000 463,914,000  
Performing Financial Instruments [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   1,041,000  
Performing (accruing) loans current 7,061,000 4,049,000  
Performing (accruing) loans 7,061,000 3,008,000  
Non-accrual loans 7,061,000 4,049,000  
Performing Financial Instruments [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   815,000  
Performing (accruing) loans current 7,121,000 8,079,000  
Performing (accruing) loans 7,121,000 7,264,000  
Non-accrual loans 7,121,000 8,079,000  
Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 2,300,000 2,733,000  
Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 2,300,000 1,692,000  
Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   1,041,000  
Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 186,000 904,000  
Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 186,000 89,000  
Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   815,000  
Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,529,000 1,832,000  
Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,529,000 1,832,000  
Performing Financial Instruments [Member] | Construction Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 8,878,000 3,096,000  
Performing (accruing) loans 8,878,000 3,096,000  
Non-accrual loans 8,878,000 3,096,000  
Performing Financial Instruments [Member] | Construction to Permanent Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current   10,627,000  
Performing (accruing) loans   10,627,000  
Non-accrual loans   10,627,000  
Commercial Portfolio Segment [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 56,960,000 53,973,000 37,849,000
Non-accrual loans 56,960,000 53,973,000 37,849,000
Loans   2,000  
Commercial Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 51,451,000 48,078,000  
Non-accrual loans 51,451,000 48,078,000  
Commercial Portfolio Segment [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 106,000 121,000  
Non-accrual loans 106,000 121,000  
Commercial Portfolio Segment [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 5,403,000 5,774,000  
Non-accrual loans 5,403,000 5,774,000  
Loans   2,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,976,000 1,799,000  
Performing (accruing) loans current 56,960,000 53,971,000  
Performing (accruing) loans 54,984,000 52,172,000  
Non-accrual loans 56,960,000 53,971,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,976,000 1,799,000  
Performing (accruing) loans current 51,451,000 48,078,000  
Performing (accruing) loans 49,475,000 46,279,000  
Non-accrual loans 51,451,000 48,078,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 106,000 121,000  
Performing (accruing) loans 106,000 121,000  
Non-accrual loans 106,000 121,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 5,403,000 5,772,000  
Performing (accruing) loans 5,403,000 5,772,000  
Non-accrual loans 5,403,000 5,772,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,976,000 1,520,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,976,000 1,520,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   279,000  
Commercial Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   279,000  
Commercial Real Estate Portfolio Segment [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 273,653,000 254,505,000 219,762,000
Non-accrual loans 273,653,000 254,505,000 219,762,000
Loans 131,000 138,000  
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 264,849,000 248,132,000  
Non-accrual loans 264,849,000 248,132,000  
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 6,955,000 3,928,000  
Non-accrual loans 6,955,000 3,928,000  
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 1,849,000 2,445,000  
Non-accrual loans 1,849,000 2,445,000  
Loans 131,000 138,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 138,000 1,856,000  
Performing (accruing) loans current 273,522,000 254,367,000  
Performing (accruing) loans 273,384,000 252,511,000  
Non-accrual loans 273,522,000 254,367,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 138,000    
Performing (accruing) loans current 264,849,000 248,132,000  
Performing (accruing) loans 264,711,000 248,132,000  
Non-accrual loans 264,849,000 248,132,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   1,041,000  
Performing (accruing) loans current 6,955,000 3,928,000  
Performing (accruing) loans 6,955,000 2,887,000  
Non-accrual loans 6,955,000 3,928,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   815,000  
Performing (accruing) loans current 1,718,000 2,307,000  
Performing (accruing) loans 1,718,000 1,492,000  
Non-accrual loans 1,718,000 2,307,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 138,000 1,041,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 138,000    
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Special Mention [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   1,041,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   815,000  
Commercial Real Estate Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due   815,000  
Construction Portfolio Segment [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 8,878,000 3,096,000 0
Non-accrual loans 8,878,000 3,096,000 0
Construction Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 8,878,000 3,096,000  
Performing (accruing) loans 8,878,000 3,096,000  
Non-accrual loans 8,878,000 3,096,000  
Construction to Permanent Portfolio Segment [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 9,370,000 10,627,000 14,436,000
Non-accrual loans 9,370,000 10,627,000 14,436,000
Construction to Permanent Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 9,370,000    
Non-accrual loans 9,370,000    
Construction to Permanent Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 9,370,000 10,627,000  
Performing (accruing) loans 9,370,000 10,627,000  
Non-accrual loans 9,370,000 10,627,000  
Construction to Permanent Portfolio Segment [Member] | Performing Financial Instruments [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 9,370,000    
Performing (accruing) loans 9,370,000    
Non-accrual loans 9,370,000    
Residential Portfolio Segment [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 97,501,000 108,543,000 89,517,000
Non-accrual loans 97,501,000 108,543,000 89,517,000
Loans 380,000 719,000  
Residential Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 97,121,000 107,824,000  
Non-accrual loans 97,121,000 107,824,000  
Residential Portfolio Segment [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 380,000 719,000  
Non-accrual loans 380,000 719,000  
Loans 380,000 719,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,777,000 1,812,000  
Performing (accruing) loans current 97,121,000 107,824,000  
Performing (accruing) loans 95,344,000 106,012,000  
Non-accrual loans 97,121,000 107,824,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,777,000 1,812,000  
Performing (accruing) loans current 97,121,000 107,824,000  
Performing (accruing) loans 95,344,000 106,012,000  
Non-accrual loans 97,121,000 107,824,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 171,000 172,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 171,000 172,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 84,000 87,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 84,000 87,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,522,000 1,553,000  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 1,522,000 1,553,000  
Consumer Portfolio Segment [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 47,551,000 46,164,000 45,781,000
Non-accrual loans 47,551,000 46,164,000 $ 45,781,000
Loans   7,000  
Consumer Portfolio Segment [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current 47,551,000 46,157,000  
Non-accrual loans 47,551,000 46,157,000  
Consumer Portfolio Segment [Member] | Substandard [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans current   7,000  
Non-accrual loans   7,000  
Loans   7,000  
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 124,000 2,000  
Performing (accruing) loans current 47,551,000 46,157,000  
Performing (accruing) loans 47,427,000 46,155,000  
Non-accrual loans 47,551,000 46,157,000  
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 124,000 2,000  
Performing (accruing) loans current 47,551,000 46,157,000  
Performing (accruing) loans 47,427,000 46,155,000  
Non-accrual loans 47,551,000 46,157,000  
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 15,000    
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 15,000    
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 102,000 2,000  
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 102,000 $ 2,000  
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due 7,000    
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Pass [Member]      
Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Delinquency Status of Performing (Accruing) Loans [Line Items]      
Performing (accruing) loans past due $ 7,000