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Loans (Details) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio $ 881,814,000 $ 886,929,000 $ 881,814,000 $ 886,929,000 $ 864,988,000
Percentage of loan portfolio (in hundredths) 100.00% 100.00% 100.00% 100.00% 100.00%
Net deferred loan costs included in loan balances 1,664,000 1,365,000 1,664,000 1,365,000 1,386,000
Loans used to collateralize borrowings from the Federal Home Loan Bank of Boston 243,196,000 180,839,000 243,196,000 180,839,000 211,597,000
Commercial, construction and home equity loans used to collateralize unused line of credit at the Federal Reserve Bank of Boston 232,598,000 329,677,000 232,598,000 329,677,000 218,417,000
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 6,045,000 10,107,000 6,045,000 10,107,000 8,619,000
90 Plus Days Past Due 13,995,000 16,046,000 13,995,000 16,046,000 17,978,000
All Past Due 20,040,000 26,153,000 20,040,000 26,153,000 26,597,000
Current 861,774,000 860,776,000 861,774,000 860,776,000 838,391,000
Total 881,814,000 886,929,000 881,814,000 886,929,000 864,988,000
90 Plus Days And Accruing 164,000 355,000 164,000 355,000 1,170,000
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 21,958,000 22,049,000 21,958,000 22,049,000 27,806,000
Recorded Investment 43,374,000 26,981,000 43,374,000 26,981,000 42,120,000
Unpaid Principal, Impaired Loans 43,374,000 26,981,000 43,374,000 26,981,000 42,120,000
Allowance for loan losses 4,177,000 1,965,000 4,177,000 1,965,000 2,058,000
Average Recorded Investment 44,170,000 26,330,000 42,883,000 26,612,000 28,777,000
Recognized Interest Income 270,000 150,000 422,000 301,000 598,000
Balance of impaired loans 43,374,000 26,981,000 43,374,000 26,981,000 42,120,000
Allowance for loan losses 4,177,000 1,965,000 4,177,000 1,965,000 2,058,000
With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 24,463,000 19,368,000 24,463,000 19,368,000 27,897,000
Unpaid Principal, Impaired Loans 24,463,000 19,368,000 24,463,000 19,368,000 27,897,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 25,951,000 18,279,000 25,934,000 17,941,000 19,341,000
Recognized Interest Income 146,000 62,000 224,000 125,000 248,000
Balance of impaired loans 24,463,000 19,368,000 24,463,000 19,368,000 27,897,000
Allowance for loan losses 0 0 0 0 0
With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 18,911,000 7,613,000 18,911,000 7,613,000 14,223,000
Unpaid Principal, Impaired Loans 18,911,000 7,613,000 18,911,000 7,613,000 14,223,000
Allowance for loan losses 4,177,000 1,965,000 4,177,000 1,965,000 2,058,000
Average Recorded Investment 18,219,000 8,058,000 16,949,000 8,671,000 9,436,000
Recognized Interest Income 124,000 88,000 198,000 176,000 350,000
Balance of impaired loans 18,911,000 7,613,000 18,911,000 7,613,000 14,223,000
Allowance for loan losses 4,177,000 1,965,000 4,177,000 1,965,000 2,058,000
Commercial Real Estate [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 253,193,000 263,337,000 253,193,000 263,337,000 255,424,000
Percentage of loan portfolio (in hundredths) 28.70% 29.70% 28.70% 29.70% 29.50%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 13,000 2,227,000 13,000 2,227,000 2,872,000
90 Plus Days Past Due 1,858,000 4,051,000 1,858,000 4,051,000 3,992,000
All Past Due 1,871,000 6,278,000 1,871,000 6,278,000 6,864,000
Current 251,322,000 257,059,000 251,322,000 257,059,000 248,560,000
Total 253,193,000 263,337,000 253,193,000 263,337,000 255,424,000
90 Plus Days And Accruing 0 0 0 0 0
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 5,545,000 6,746,000 5,545,000 6,746,000 7,064,000
Recorded Investment 13,795,000 6,746,000 13,795,000 6,746,000 10,141,000
Unpaid Principal, Impaired Loans 13,795,000 6,746,000 13,795,000 6,746,000 10,141,000
Allowance for loan losses 1,133,000 613,000 1,133,000 613,000 808,000
Average Recorded Investment 14,788,000 7,521,000 13,755,000 7,172,000 7,519,000
Recognized Interest Income 77,000 32,000 127,000 64,000 126,000
Balance of impaired loans 13,795,000 6,746,000 13,795,000 6,746,000 10,141,000
Allowance for loan losses 1,133,000 613,000 1,133,000 613,000 808,000
Commercial Real Estate [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 10,313,000 5,841,000 10,313,000 5,841,000 5,584,000
Unpaid Principal, Impaired Loans 10,313,000 5,841,000 10,313,000 5,841,000 5,584,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 11,013,000 5,738,000 9,729,000 5,151,000 5,212,000
Recognized Interest Income 71,000 6,000 111,000 12,000 23,000
Balance of impaired loans 10,313,000 5,841,000 10,313,000 5,841,000 5,584,000
Allowance for loan losses 0 0 0 0 0
Commercial Real Estate [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 3,482,000 905,000 3,482,000 905,000 4,557,000
Unpaid Principal, Impaired Loans 3,482,000 905,000 3,482,000 905,000 4,557,000
Allowance for loan losses 1,133,000 613,000 1,133,000 613,000 808,000
Average Recorded Investment 3,775,000 1,785,000 4,026,000 2,021,000 2,307,000
Recognized Interest Income 6,000 26,000 16,000 52,000 103,000
Balance of impaired loans 3,482,000 905,000 3,482,000 905,000 4,557,000
Allowance for loan losses 1,133,000 613,000 1,133,000 613,000 808,000
Commercial Construction [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 33,072,000 29,386,000 33,072,000 29,386,000 32,574,000
Percentage of loan portfolio (in hundredths) 3.80% 3.30% 3.80% 3.30% 3.80%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 119,000 117,000 119,000 117,000 174,000
90 Plus Days Past Due 34,000 0 34,000 0 1,603,000
All Past Due 153,000 117,000 153,000 117,000 1,777,000
Current 32,919,000 29,269,000 32,919,000 29,269,000 30,797,000
Total 33,072,000 29,386,000 33,072,000 29,386,000 32,574,000
90 Plus Days And Accruing 0 0 0 0 0
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 521,000 771,000 521,000 771,000 2,350,000
Recorded Investment 3,619,000 772,000 3,619,000 772,000 5,702,000
Unpaid Principal, Impaired Loans 3,619,000 772,000 3,619,000 772,000 5,702,000
Allowance for loan losses 787,000 0 787,000 0 33,000
Average Recorded Investment 3,550,000 793,000 3,565,000 844,000 1,318,000
Recognized Interest Income 50,000 36,000 63,000 72,000 143,000
Balance of impaired loans 3,619,000 772,000 3,619,000 772,000 5,702,000
Allowance for loan losses 787,000 0 787,000 0 33,000
Commercial Construction [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 1,464,000 772,000 1,464,000 772,000 5,172,000
Unpaid Principal, Impaired Loans 1,464,000 772,000 1,464,000 772,000 5,172,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 1,395,000 790,000 2,189,000 617,000 1,072,000
Recognized Interest Income 13,000 36,000 26,000 72,000 143,000
Balance of impaired loans 1,464,000 772,000 1,464,000 772,000 5,172,000
Allowance for loan losses 0 0 0 0 0
Commercial Construction [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 2,155,000 0 2,155,000 0 530,000
Unpaid Principal, Impaired Loans 2,155,000 0 2,155,000 0 530,000
Allowance for loan losses 787,000 0 787,000 0 33,000
Average Recorded Investment 2,155,000 3,000 1,376,000 227,000 247,000
Recognized Interest Income 37,000 0 37,000 0 0
Balance of impaired loans 2,155,000 0 2,155,000 0 530,000
Allowance for loan losses 787,000 0 787,000 0 33,000
Commercial Other [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 87,833,000 102,499,000 87,833,000 102,499,000 86,982,000
Percentage of loan portfolio (in hundredths) 10.00% 11.60% 10.00% 11.60% 10.10%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 443,000 544,000 443,000 544,000 1,431,000
90 Plus Days Past Due 1,398,000 997,000 1,398,000 997,000 1,192,000
All Past Due 1,841,000 1,541,000 1,841,000 1,541,000 2,623,000
Current 85,992,000 100,958,000 85,992,000 100,958,000 84,359,000
Total 87,833,000 102,499,000 87,833,000 102,499,000 86,982,000
90 Plus Days And Accruing 0 38,000 0 38,000 52,000
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 2,361,000 2,095,000 2,361,000 2,095,000 5,784,000
Recorded Investment 4,100,000 2,095,000 4,100,000 2,095,000 7,042,000
Unpaid Principal, Impaired Loans 4,100,000 2,095,000 4,100,000 2,095,000 7,042,000
Allowance for loan losses 932,000 857,000 932,000 857,000 402,000
Average Recorded Investment 4,241,000 1,816,000 4,723,000 1,770,000 2,600,000
Recognized Interest Income 34,000 12,000 34,000 24,000 47,000
Balance of impaired loans 4,100,000 2,095,000 4,100,000 2,095,000 7,042,000
Allowance for loan losses 932,000 857,000 932,000 857,000 402,000
Commercial Other [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 2,249,000 1,056,000 2,249,000 1,056,000 6,022,000
Unpaid Principal, Impaired Loans 2,249,000 1,056,000 2,249,000 1,056,000 6,022,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 2,439,000 1,064,000 2,710,000 1,118,000 1,918,000
Recognized Interest Income 21,000 7,000 16,000 14,000 28,000
Balance of impaired loans 2,249,000 1,056,000 2,249,000 1,056,000 6,022,000
Allowance for loan losses 0 0 0 0 0
Commercial Other [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 1,851,000 1,039,000 1,851,000 1,039,000 1,020,000
Unpaid Principal, Impaired Loans 1,851,000 1,039,000 1,851,000 1,039,000 1,020,000
Allowance for loan losses 932,000 857,000 932,000 857,000 402,000
Average Recorded Investment 1,802,000 754,000 2,013,000 652,000 681,000
Recognized Interest Income 13,000 5,000 18,000 10,000 19,000
Balance of impaired loans 1,851,000 1,039,000 1,851,000 1,039,000 1,020,000
Allowance for loan losses 932,000 857,000 932,000 857,000 402,000
Municipal [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 16,089,000 19,974,000 16,089,000 19,974,000 16,221,000
Percentage of loan portfolio (in hundredths) 1.80% 2.30% 1.80% 2.30% 1.90%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 1,560,000 0 1,560,000 0 0
90 Plus Days Past Due 0 0 0 0 0
All Past Due 1,560,000 0 1,560,000 0 0
Current 14,529,000 19,974,000 14,529,000 19,974,000 16,221,000
Total 16,089,000 19,974,000 16,089,000 19,974,000 16,221,000
90 Plus Days And Accruing 0 0 0 0 0
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 0 0 0 0 0
Recorded Investment 0 0 0 0 0
Unpaid Principal, Impaired Loans 0 0 0 0 0
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 0 0 0 0 0
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 0 0 0 0 0
Allowance for loan losses 0 0 0 0 0
Municipal [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 0 0 0 0 0
Unpaid Principal, Impaired Loans 0 0 0 0 0
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 0 0 0 0 0
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 0 0 0 0 0
Allowance for loan losses 0 0 0 0 0
Municipal [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 0 0 0 0 0
Unpaid Principal, Impaired Loans 0 0 0 0 0
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 0 0 0 0 0
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 0 0 0 0 0
Allowance for loan losses 0 0 0 0 0
Residential Term [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 368,876,000 335,807,000 368,876,000 335,807,000 341,286,000
Percentage of loan portfolio (in hundredths) 41.80% 37.90% 41.80% 37.90% 39.50%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 3,191,000 6,093,000 3,191,000 6,093,000 3,331,000
90 Plus Days Past Due 7,878,000 9,916,000 7,878,000 9,916,000 8,843,000
All Past Due 11,069,000 16,009,000 11,069,000 16,009,000 12,174,000
Current 357,807,000 319,798,000 357,807,000 319,798,000 329,112,000
Total 368,876,000 335,807,000 368,876,000 335,807,000 341,286,000
90 Plus Days And Accruing 0 309,000 0 309,000 1,118,000
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 10,723,000 11,260,000 10,723,000 11,260,000 10,194,000
Recorded Investment 19,052,000 16,191,000 19,052,000 16,191,000 16,821,000
Unpaid Principal, Impaired Loans 19,052,000 16,191,000 19,052,000 16,191,000 16,821,000
Allowance for loan losses 966,000 265,000 966,000 265,000 478,000
Average Recorded Investment 18,847,000 14,761,000 18,149,000 14,211,000 15,121,000
Recognized Interest Income 109,000 70,000 198,000 141,000 282,000
Balance of impaired loans 19,052,000 16,191,000 19,052,000 16,191,000 16,821,000
Allowance for loan losses 966,000 265,000 966,000 265,000 478,000
Residential Term [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 8,695,000 10,818,000 8,695,000 10,818,000 9,875,000
Unpaid Principal, Impaired Loans 8,695,000 10,818,000 8,695,000 10,818,000 9,875,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 9,322,000 9,785,000 9,662,000 8,957,000 9,493,000
Recognized Interest Income 41,000 13,000 71,000 27,000 54,000
Balance of impaired loans 8,695,000 10,818,000 8,695,000 10,818,000 9,875,000
Allowance for loan losses 0 0 0 0 0
Residential Term [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 10,357,000 5,373,000 10,357,000 5,373,000 6,946,000
Unpaid Principal, Impaired Loans 10,357,000 5,373,000 10,357,000 5,373,000 6,946,000
Allowance for loan losses 966,000 265,000 966,000 265,000 478,000
Average Recorded Investment 9,525,000 4,978,000 8,487,000 5,254,000 5,628,000
Recognized Interest Income 68,000 57,000 127,000 114,000 228,000
Balance of impaired loans 10,357,000 5,373,000 10,357,000 5,373,000 6,946,000
Allowance for loan losses 966,000 265,000 966,000 265,000 478,000
Residential Construction [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 6,449,000 11,063,000 6,449,000 11,063,000 10,469,000
Percentage of loan portfolio (in hundredths) 0.70% 1.20% 0.70% 1.20% 1.20%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 0 0 0 0 0
90 Plus Days Past Due 1,336,000 334,000 1,336,000 334,000 1,198,000
All Past Due 1,336,000 334,000 1,336,000 334,000 1,198,000
Current 5,113,000 10,729,000 5,113,000 10,729,000 9,271,000
Total 6,449,000 11,063,000 6,449,000 11,063,000 10,469,000
90 Plus Days And Accruing 0 0 0 0 0
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 1,336,000 334,000 1,336,000 334,000 1,198,000
Recorded Investment 1,336,000 334,000 1,336,000 334,000 1,198,000
Unpaid Principal, Impaired Loans 1,336,000 334,000 1,336,000 334,000 1,198,000
Allowance for loan losses 48,000 0 48,000 0 235,000
Average Recorded Investment 1,376,000 539,000 1,346,000 1,833,000 1,205,000
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 1,336,000 334,000 1,336,000 334,000 1,198,000
Allowance for loan losses 48,000 0 48,000 0 235,000
Residential Construction [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 1,002,000 334,000 1,002,000 334,000 468,000
Unpaid Principal, Impaired Loans 1,002,000 334,000 1,002,000 334,000 468,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 1,042,000 348,000 880,000 1,641,000 961,000
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 1,002,000 334,000 1,002,000 334,000 468,000
Allowance for loan losses 0 0 0 0 0
Residential Construction [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 334,000 0 334,000 0 730,000
Unpaid Principal, Impaired Loans 334,000 0 334,000 0 730,000
Allowance for loan losses 48,000 0 48,000 0 235,000
Average Recorded Investment 334,000 192,000 466,000 192,000 244,000
Recognized Interest Income   0 0 0 0
Balance of impaired loans 334,000 0 334,000 0 730,000
Allowance for loan losses 48,000 0 48,000 0 235,000
Home equity line of credit [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 100,689,000 107,224,000 100,689,000 107,224,000 105,244,000
Percentage of loan portfolio (in hundredths) 11.40% 12.00% 11.40% 12.00% 12.10%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 530,000 868,000 530,000 868,000 480,000
90 Plus Days Past Due 1,311,000 740,000 1,311,000 740,000 1,134,000
All Past Due 1,841,000 1,608,000 1,841,000 1,608,000 1,614,000
Current 98,848,000 105,616,000 98,848,000 105,616,000 103,630,000
Total 100,689,000 107,224,000 100,689,000 107,224,000 105,244,000
90 Plus Days And Accruing 0 0 0 0 0
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 1,456,000 740,000 1,456,000 740,000 1,163,000
Recorded Investment 1,456,000 740,000 1,456,000 740,000 1,163,000
Unpaid Principal, Impaired Loans 1,456,000 740,000 1,456,000 740,000 1,163,000
Allowance for loan losses 300,000 165,000 300,000 165,000 91,000
Average Recorded Investment 1,353,000 797,000 1,324,000 673,000 918,000
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 1,456,000 740,000 1,456,000 740,000 1,163,000
Allowance for loan losses 300,000 165,000 300,000 165,000 91,000
Home equity line of credit [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 740,000 509,000 740,000 509,000 739,000
Unpaid Principal, Impaired Loans 740,000 509,000 740,000 509,000 739,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 740,000 516,000 758,000 417,000 646,000
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 740,000 509,000 740,000 509,000 739,000
Allowance for loan losses 0 0 0 0 0
Home equity line of credit [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 716,000 231,000 716,000 231,000 424,000
Unpaid Principal, Impaired Loans 716,000 231,000 716,000 231,000 424,000
Allowance for loan losses 300,000 165,000 300,000 165,000 91,000
Average Recorded Investment 613,000 281,000 566,000 256,000 272,000
Recognized Interest Income   0 0 0 0
Balance of impaired loans 716,000 231,000 716,000 231,000 424,000
Allowance for loan losses 300,000 165,000 300,000 165,000 91,000
Consumer [Member]
          
Composition of Loan Portfolio [Abstract]          
Amount of loan portfolio 15,613,000 17,639,000 15,613,000 17,639,000 16,788,000
Percentage of loan portfolio (in hundredths) 1.80% 2.00% 1.80% 2.00% 1.90%
Loans, aging disclosure [Abstract]          
30-89 Days Past Due 189,000 258,000 189,000 258,000 331,000
90 Plus Days Past Due 180,000 8,000 180,000 8,000 16,000
All Past Due 369,000 266,000 369,000 266,000 347,000
Current 15,244,000 17,373,000 15,244,000 17,373,000 16,441,000
Total 15,613,000 17,639,000 15,613,000 17,639,000 16,788,000
90 Plus Days And Accruing 164,000 8,000 164,000 8,000 0
Nonaccrual Loans [Abstract]          
Nonaccrual Loans Receivable 16,000 103,000 16,000 103,000 53,000
Recorded Investment 16,000 103,000 16,000 103,000 53,000
Unpaid Principal, Impaired Loans 16,000 103,000 16,000 103,000 53,000
Allowance for loan losses 11,000 65,000 11,000 65,000 11,000
Average Recorded Investment 15,000 103,000 21,000 109,000 96,000
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 16,000 103,000 16,000 103,000 53,000
Allowance for loan losses 11,000 65,000 11,000 65,000 11,000
Consumer [Member] | With No Related Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 0 38,000 0 38,000 37,000
Unpaid Principal, Impaired Loans 0 38,000 0 38,000 37,000
Allowance for loan losses 0 0 0 0 0
Average Recorded Investment 0 38,000 6,000 40,000 39,000
Recognized Interest Income 0 0 0 0 0
Balance of impaired loans 0 38,000 0 38,000 37,000
Allowance for loan losses 0 0 0 0 0
Consumer [Member] | With an Allowance Recorded [Member]
          
Nonaccrual Loans [Abstract]          
Recorded Investment 16,000 65,000 16,000 65,000 16,000
Unpaid Principal, Impaired Loans 16,000 65,000 16,000 65,000 16,000
Allowance for loan losses 11,000 65,000 11,000 65,000 11,000
Average Recorded Investment 15,000 65,000 15,000 69,000 57,000
Recognized Interest Income   0 0 0 0
Balance of impaired loans 16,000 65,000 16,000 65,000 16,000
Allowance for loan losses $ 11,000 $ 65,000 $ 11,000 $ 65,000 $ 11,000