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LOANS (Details) (USD $)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Dec. 31, 2011
Loans receivable, net [Abstract]      
Loans $ 3,460,739,000   $ 3,471,025,000
Allowance for loan losses (41,809,000) (42,147,000)  
Loans, net of allowance for loan losses 3,418,930,000   3,428,812,000
Acquired credit impaired loans 25,500,000   25,900,000
Accretable discount related to acquired loans [Roll forward]      
Beginning Balance 2,610,000    
Accretion recognized, to-date (456,000)    
Net reclassification from accretable to nonaccretable 184,000    
Ending Balance 2,338,000    
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 3,460,739,000   3,471,025,000
Loans 3,460,739,000   3,471,025,000
Impaired loans [Abstract]      
Loans with reserve 8,017,000   4,118,000
Loans without reserve 7,043,000   2,308,000
Carrying balance 15,060,000   6,426,000
Contractual balance 18,270,000   8,527,000
Specifically allocated allowance 1,880,000   895,000
Allowance for loan losses [Roll Forward]      
Beginning balance 42,213,000 42,510,000  
Charge-offs (3,446,000) (2,558,000)  
Recoveries 1,398,000 1,145,000  
Provision 1,644,000 1,050,000  
Ending balance 41,809,000 42,147,000  
Consumer Mortgage [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (4,885,000) (3,099,000)  
Allowance for loan losses [Roll Forward]      
Beginning balance 4,651,000 2,451,000  
Charge-offs (269,000) (236,000)  
Recoveries 13,000 19,000  
Provision 490,000 865,000  
Ending balance 4,885,000 3,099,000  
Business Lending [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (21,413,000) (21,559,000)  
Allowance for loan losses [Roll Forward]      
Beginning balance 20,574,000 22,326,000  
Charge-offs (1,565,000) (843,000)  
Recoveries 155,000 86,000  
Provision 2,249,000 (10,000)  
Ending balance 21,413,000 21,559,000  
Home Equity [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (1,281,000) (860,000)  
Allowance for loan losses [Roll Forward]      
Beginning balance 1,130,000 689,000  
Charge-offs (116,000) (36,000)  
Recoveries 16,000 7,000  
Provision 251,000 200,000  
Ending balance 1,281,000 860,000  
Consumer Installment-Direct [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (3,066,000) (3,794,000)  
Allowance for loan losses [Roll Forward]      
Beginning balance 3,290,000 3,977,000  
Charge-offs (457,000) (417,000)  
Recoveries 172,000 216,000  
Provision 61,000 18,000  
Ending balance 3,066,000 3,794,000  
Consumer Installment-Indirect [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (7,938,000) (9,639,000)  
Allowance for loan losses [Roll Forward]      
Beginning balance 8,960,000 9,922,000  
Charge-offs (1,039,000) (1,026,000)  
Recoveries 1,042,000 817,000  
Provision (1,025,000) (74,000)  
Ending balance 7,938,000 9,639,000  
Unallocated [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (2,770,000) (3,196,000)  
Allowance for loan losses [Roll Forward]      
Beginning balance 3,222,000 3,145,000  
Charge-offs 0 0  
Recoveries 0 0  
Provision (452,000) 51,000  
Ending balance 2,770,000 3,196,000  
Acquired Impaired [Member]
     
Loans receivable, net [Abstract]      
Allowance for loan losses (456,000) 0  
Allowance for loan losses [Roll Forward]      
Beginning balance 386,000 0  
Charge-offs 0 0  
Recoveries 0 0  
Provision 70,000 0  
Ending balance 456,000 0  
Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 376,152,000   395,546,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 3,313,000   5,827,000
90 plus Days Past Due and Still Accruing 1,189,000   212,000
Nonaccrual 9,969,000   10,700,000
Total Past Due 14,471,000   16,739,000
Purchased Impaired 17,037,000 [1]   17,428,000 [1]
Current 344,644,000   361,379,000
Gross loans, including deferred origination costs 376,152,000   395,546,000
Loans 376,152,000   395,546,000
Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 3,084,587,000   3,075,479,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 26,648,000   33,853,000
90 plus Days Past Due and Still Accruing 2,700,000   2,878,000
Nonaccrual 20,178,000   17,585,000
Total Past Due 49,526,000   54,316,000
Current 3,035,061,000   3,021,163,000
Gross loans, including deferred origination costs 3,084,587,000   3,075,479,000
Loans 3,084,587,000   3,075,479,000
Performing [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 128,277,000   137,696,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 128,277,000   137,696,000
Loans 128,277,000   137,696,000
Performing [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 2,110,594,000   2,096,472,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 2,110,594,000   2,096,472,000
Loans 2,110,594,000   2,096,472,000
Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 1,640,000   1,310,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,640,000   1,310,000
Loans 1,640,000   1,310,000
Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 9,455,000   9,108,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 9,455,000   9,108,000
Loans 9,455,000   9,108,000
Performing and Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 129,917,000   139,006,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 129,917,000   139,006,000
Loans 129,917,000   139,006,000
Performing and Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 2,120,049,000   2,105,580,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 2,120,049,000   2,105,580,000
Loans 2,120,049,000   2,105,580,000
Consumer Mortgage [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 73,890,000   78,901,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 697,000   985,000
90 plus Days Past Due and Still Accruing 137,000   27,000
Nonaccrual 1,105,000   765,000
Total Past Due 1,939,000   1,777,000
Purchased Impaired 0 [1]   0 [1]
Current 71,951,000   77,124,000
Gross loans, including deferred origination costs 73,890,000   78,901,000
Loans 73,890,000   78,901,000
Consumer Mortgage [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 1,171,327,000   1,135,720,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 11,611,000   16,026,000
90 plus Days Past Due and Still Accruing 2,256,000   2,144,000
Nonaccrual 6,027,000   5,755,000
Total Past Due 19,894,000   23,925,000
Current 1,151,433,000   1,111,795,000
Gross loans, including deferred origination costs 1,171,327,000   1,135,720,000
Loans 1,171,327,000   1,135,720,000
Consumer Mortgage [Member] | Performing [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 72,648,000   78,109,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 72,648,000   78,109,000
Loans 72,648,000   78,109,000
Consumer Mortgage [Member] | Performing [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 1,163,044,000   1,127,821,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,163,044,000   1,127,821,000
Loans 1,163,044,000   1,127,821,000
Consumer Mortgage [Member] | Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 1,242,000   792,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,242,000   792,000
Loans 1,242,000   792,000
Consumer Mortgage [Member] | Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 8,283,000   7,899,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 8,283,000   7,899,000
Loans 8,283,000   7,899,000
Consumer Mortgage [Member] | Performing and Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 73,890,000   78,901,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 73,890,000   78,901,000
Loans 73,890,000   78,901,000
Consumer Mortgage [Member] | Performing and Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 1,171,327,000   1,135,720,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,171,327,000   1,135,720,000
Loans 1,171,327,000   1,135,720,000
Business Lending [Member]
     
Loans receivable, net [Abstract]      
Loans 1,210,773,000   1,226,439,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,210,773,000   1,226,439,000
Loans 1,210,773,000   1,226,439,000
Business Lending [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 246,235,000   256,540,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 1,778,000   3,473,000
90 plus Days Past Due and Still Accruing 1,051,000   10,000
Nonaccrual 8,467,000   9,592,000
Total Past Due 11,296,000   13,075,000
Purchased Impaired 17,037,000 [1]   17,428,000 [1]
Current 217,902,000   226,037,000
Gross loans, including deferred origination costs 246,235,000   256,540,000
Loans 246,235,000   256,540,000
Business Lending [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 964,538,000   969,899,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 5,975,000   4,799,000
90 plus Days Past Due and Still Accruing 111,000   389,000
Nonaccrual 13,312,000   10,966,000
Total Past Due 19,398,000   16,154,000
Current 945,140,000   953,745,000
Gross loans, including deferred origination costs 964,538,000   969,899,000
Loans 964,538,000   969,899,000
Business Lending [Member] | Pass [Member]
     
Loans receivable, net [Abstract]      
Loans 884,351,000   890,367,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 884,351,000   890,367,000
Loans 884,351,000   890,367,000
Business Lending [Member] | Pass [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 146,507,000   157,494,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 146,507,000   157,494,000
Loans 146,507,000   157,494,000
Business Lending [Member] | Pass [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 737,844,000   732,873,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 737,844,000   732,873,000
Loans 737,844,000   732,873,000
Business Lending [Member] | Special Mention [Member]
     
Loans receivable, net [Abstract]      
Loans 149,465,000   166,690,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 149,465,000   166,690,000
Loans 149,465,000   166,690,000
Business Lending [Member] | Special Mention [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 43,785,000   47,890,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 43,785,000   47,890,000
Loans 43,785,000   47,890,000
Business Lending [Member] | Special Mention [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 105,680,000   118,800,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 105,680,000   118,800,000
Loans 105,680,000   118,800,000
Business Lending [Member] | Classified [Member]
     
Loans receivable, net [Abstract]      
Loans 159,469,000   151,954,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 159,469,000   151,954,000
Loans 159,469,000   151,954,000
Business Lending [Member] | Classified [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 38,906,000   33,728,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 38,906,000   33,728,000
Loans 38,906,000   33,728,000
Business Lending [Member] | Classified [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 120,563,000   118,226,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 120,563,000   118,226,000
Loans 120,563,000   118,226,000
Business Lending [Member] | Doubtful [Member]
     
Loans receivable, net [Abstract]      
Loans 451,000   0
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 451,000   0
Loans 451,000   0
Business Lending [Member] | Doubtful [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 0   0
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 0   0
Loans 0   0
Business Lending [Member] | Doubtful [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 451,000   0
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 451,000   0
Loans 451,000   0
Business Lending [Member] | Purchased Impaired [Member]
     
Loans receivable, net [Abstract]      
Loans 17,037,000   17,428,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 17,037,000   17,428,000
Loans 17,037,000   17,428,000
Business Lending [Member] | Purchased Impaired [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 17,037,000   17,428,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 17,037,000   17,428,000
Loans 17,037,000   17,428,000
Business Lending [Member] | Purchased Impaired [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 0   0
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 0   0
Loans 0   0
Consumer Installment-Indirect [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 17,500,000   21,046,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 434,000   737,000
90 plus Days Past Due and Still Accruing 1,000   0
Nonaccrual 1,000   2,000
Total Past Due 436,000   739,000
Purchased Impaired 0 [1]   0 [1]
Current 17,064,000   20,307,000
Gross loans, including deferred origination costs 17,500,000   21,046,000
Loans 17,500,000   21,046,000
Consumer Installment-Indirect [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 525,105,000   535,909,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 5,775,000   8,847,000
90 plus Days Past Due and Still Accruing 30,000   32,000
Nonaccrual 0   0
Total Past Due 5,805,000   8,879,000
Current 519,300,000   527,030,000
Gross loans, including deferred origination costs 525,105,000   535,909,000
Loans 525,105,000   535,909,000
Consumer Installment-Indirect [Member] | Performing [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 17,498,000   21,044,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 17,498,000   21,044,000
Loans 17,498,000   21,044,000
Consumer Installment-Indirect [Member] | Performing [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 525,075,000   535,877,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 525,075,000   535,877,000
Loans 525,075,000   535,877,000
Consumer Installment-Indirect [Member] | Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 2,000   2,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 2,000   2,000
Loans 2,000   2,000
Consumer Installment-Indirect [Member] | Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 30,000   32,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 30,000   32,000
Loans 30,000   32,000
Consumer Installment-Indirect [Member] | Performing and Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 17,500,000   21,046,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 17,500,000   21,046,000
Loans 17,500,000   21,046,000
Consumer Installment-Indirect [Member] | Performing and Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 525,105,000   535,909,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 525,105,000   535,909,000
Loans 525,105,000   535,909,000
Home Equity [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 30,792,000   30,396,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 343,000   465,000
90 plus Days Past Due and Still Accruing 0   175,000
Nonaccrual 396,000   341,000
Total Past Due 739,000   981,000
Purchased Impaired 0 [1]   0 [1]
Current 30,053,000   29,415,000
Gross loans, including deferred origination costs 30,792,000   30,396,000
Loans 30,792,000   30,396,000
Home Equity [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 286,924,000   293,444,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 2,015,000   2,269,000
90 plus Days Past Due and Still Accruing 240,000   218,000
Nonaccrual 839,000   864,000
Total Past Due 3,094,000   3,351,000
Current 283,830,000   290,093,000
Gross loans, including deferred origination costs 286,924,000   293,444,000
Loans 286,924,000   293,444,000
Home Equity [Member] | Performing [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 30,396,000   29,880,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 30,396,000   29,880,000
Loans 30,396,000   29,880,000
Home Equity [Member] | Performing [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 285,845,000   292,362,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 285,845,000   292,362,000
Loans 285,845,000   292,362,000
Home Equity [Member] | Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 396,000   516,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 396,000   516,000
Loans 396,000   516,000
Home Equity [Member] | Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 1,079,000   1,082,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,079,000   1,082,000
Loans 1,079,000   1,082,000
Home Equity [Member] | Performing and Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 30,792,000   30,396,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 30,792,000   30,396,000
Loans 30,792,000   30,396,000
Home Equity [Member] | Performing and Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 286,924,000   293,444,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 286,924,000   293,444,000
Loans 286,924,000   293,444,000
Consumer Installment-Direct [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 7,735,000   8,663,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 61,000   167,000
90 plus Days Past Due and Still Accruing 0   0
Nonaccrual 0   0
Total Past Due 61,000   167,000
Purchased Impaired 0 [1]   0 [1]
Current 7,674,000   8,496,000
Gross loans, including deferred origination costs 7,735,000   8,663,000
Loans 7,735,000   8,663,000
Consumer Installment-Direct [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 136,693,000   140,507,000
Aged analysis of the company's loans [Abstract]      
30 - 89 days 1,272,000   1,912,000
90 plus Days Past Due and Still Accruing 63,000   95,000
Nonaccrual 0   0
Total Past Due 1,335,000   2,007,000
Current 135,358,000   138,500,000
Gross loans, including deferred origination costs 136,693,000   140,507,000
Loans 136,693,000   140,507,000
Consumer Installment-Direct [Member] | Performing [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 7,735,000   8,663,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 7,735,000   8,663,000
Loans 7,735,000   8,663,000
Consumer Installment-Direct [Member] | Performing [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 136,630,000   140,412,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 136,630,000   140,412,000
Loans 136,630,000   140,412,000
Consumer Installment-Direct [Member] | Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 0   0
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 0   0
Loans 0   0
Consumer Installment-Direct [Member] | Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 63,000   95,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 63,000   95,000
Loans 63,000   95,000
Consumer Installment-Direct [Member] | Performing and Nonperforming [Member] | Acquired Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 7,735,000   8,663,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 7,735,000   8,663,000
Loans 7,735,000   8,663,000
Consumer Installment-Direct [Member] | Performing and Nonperforming [Member] | Legacy Loans [Member]
     
Loans receivable, net [Abstract]      
Loans 136,693,000   140,507,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 136,693,000   140,507,000
Loans 136,693,000   140,507,000
Consumer Mortgage [Member]
     
Loans receivable, net [Abstract]      
Contract term of consumer mortgages, minimum (in years) 15Y    
Contract term of consumer mortgages, maximum (in years) 30Y    
Contract term of home equity loans, maximum (in years) 15Y    
Loans 1,245,217,000   1,214,621,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,245,217,000   1,214,621,000
Loans 1,245,217,000   1,214,621,000
Business Lending [Member]
     
Loans receivable, net [Abstract]      
Loans 1,210,773,000   1,226,439,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 1,210,773,000   1,226,439,000
Loans 1,210,773,000   1,226,439,000
Consumer Installment-Indirect [Member]
     
Loans receivable, net [Abstract]      
Loans 542,605,000   556,955,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 542,605,000   556,955,000
Loans 542,605,000   556,955,000
Home Equity [Member]
     
Loans receivable, net [Abstract]      
Loans 317,716,000   323,840,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 317,716,000   323,840,000
Loans 317,716,000   323,840,000
Consumer Installment-Direct [Member]
     
Loans receivable, net [Abstract]      
Loans 144,428,000   149,170,000
Aged analysis of the company's loans [Abstract]      
Gross loans, including deferred origination costs 144,428,000   149,170,000
Loans $ 144,428,000   $ 149,170,000
[1] Acquired impaired loans were not classified as nonperforming assets as the loans are considered to be performing under ASC 310-30. As a result interest income, through the accretion of the difference between the carrying amount of the loans and the expected cashflows, is being recognized on all acquired impaired loans.