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LOANS AND ALLOWANCE FOR LOAN LOSSES (Loan Aging Analysis by Portfolio Segment) (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) loan | Sep. 30, 2017 USD ($) loan | Sep. 30, 2018 USD ($) loan | Sep. 30, 2017 USD ($) loan | Dec. 31, 2017 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Number of TDRs | loan | 2 | 3 | 3 | 5 |
Total Past Due | $ 20,677,000 |  | $ 20,677,000 |  | $ 22,945,000
Current | 2,888,166,000 |  | 2,888,166,000 |  | 2,759,494,000
Total Loans Outstanding | 2,908,843,000 | $ 2,748,290,000 | 2,908,843,000 | $ 2,748,290,000 | 2,782,439,000
Loans 90 Days Past Due and Accruing | 14,000 |  | 14,000 |  | 0
Non-Accrual Loans | 14,877,000 |  | 14,877,000 |  | 15,314,000
Financing Receivable, Modifications, Pre-Modification Recorded Investment | 234,000 | 429,000 | 397,000 | 895,000 |
Financing Receivable, Modifications, Post-Modification Recorded Investment | 234,000 | 448,000 | 420,000 | 914,000 |
Allowance Related to Troubled Debt Restructurings assigned during period | 57,000 | 29,000 | 96,000 | 44,000 |
Residential Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 7,779,000 |  | 7,779,000 |  | 9,477,000
Current | 933,709,000 |  | 933,709,000 |  | 848,892,000
Total Loans Outstanding | 941,488,000 | 852,851,000 | 941,488,000 | 852,851,000 | 858,369,000
Loans 90 Days Past Due and Accruing | 0 |  | 0 |  | 0
Non-Accrual Loans | 4,720,000 |  | 4,720,000 |  | 4,979,000
Commercial Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 6,066,000 |  | 6,066,000 |  | 6,700,000
Current | 1,209,913,000 |  | 1,209,913,000 |  | 1,157,323,000
Total Loans Outstanding | 1,215,979,000 | 1,131,883,000 | 1,215,979,000 | 1,131,883,000 | 1,164,023,000
Loans 90 Days Past Due and Accruing | 0 |  | 0 |  | 0
Non-Accrual Loans | 5,517,000 |  | 5,517,000 |  | 5,642,000
Commercial |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 2,763,000 |  | 2,763,000 |  | 2,223,000
Current | 366,074,000 |  | 366,074,000 |  | 371,177,000
Total Loans Outstanding | 368,837,000 | 369,155,000 | 368,837,000 | 369,155,000 | 373,400,000
Loans 90 Days Past Due and Accruing | 0 |  | 0 |  | 0
Non-Accrual Loans | 2,402,000 |  | 2,402,000 |  | 2,000,000
Home Equity |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 2,304,000 |  | 2,304,000 |  | 2,548,000
Current | 323,148,000 |  | 323,148,000 |  | 320,830,000
Total Loans Outstanding | 325,452,000 | 328,328,000 | 325,452,000 | 328,328,000 | 323,378,000
Loans 90 Days Past Due and Accruing | 0 |  | 0 |  | 0
Non-Accrual Loans | 1,614,000 |  | 1,614,000 |  | 1,650,000
Consumer |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 97,000 |  | 97,000 |  | 67,000
Current | 20,161,000 |  | 20,161,000 |  | 18,082,000
Total Loans Outstanding | 20,258,000 | 18,123,000 | 20,258,000 | 18,123,000 | 18,149,000
Loans 90 Days Past Due and Accruing | 14,000 |  | 14,000 |  | 0
Non-Accrual Loans | 33,000 |  | 33,000 |  | 0
HPFC Portfolio Segment |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 1,668,000 |  | 1,668,000 |  | 1,930,000
Current | 35,161,000 |  | 35,161,000 |  | 43,190,000
Total Loans Outstanding | 36,829,000 | $ 47,950,000 | 36,829,000 | $ 47,950,000 | 45,120,000
Loans 90 Days Past Due and Accruing | 0 |  | 0 |  | 0
Non-Accrual Loans | 591,000 |  | 591,000 |  | 1,043,000
30-59 Days Past Due |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 5,223,000 |  | 5,223,000 |  | 6,291,000
30-59 Days Past Due | Residential Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 3,342,000 |  | 3,342,000 |  | 3,871,000
30-59 Days Past Due | Commercial Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 607,000 |  | 607,000 |  | 849,000
30-59 Days Past Due | Commercial |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 79,000 |  | 79,000 |  | 329,000
30-59 Days Past Due | Home Equity |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 542,000 |  | 542,000 |  | 1,046,000
30-59 Days Past Due | Consumer |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 36,000 |  | 36,000 |  | 57,000
30-59 Days Past Due | HPFC Portfolio Segment |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 617,000 |  | 617,000 |  | 139,000
60-89 Days Past Due |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 2,193,000 |  | 2,193,000 |  | 3,822,000
60-89 Days Past Due | Residential Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 636,000 |  | 636,000 |  | 1,585,000
60-89 Days Past Due | Commercial Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 104,000 |  | 104,000 |  | 323,000
60-89 Days Past Due | Commercial |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 644,000 |  | 644,000 |  | 359,000
60-89 Days Past Due | Home Equity |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 335,000 |  | 335,000 |  | 173,000
60-89 Days Past Due | Consumer |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 14,000 |  | 14,000 |  | 10,000
60-89 Days Past Due | HPFC Portfolio Segment |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 460,000 |  | 460,000 |  | 1,372,000
Greater than 90 Days |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 13,261,000 |  | 13,261,000 |  | 12,832,000
Greater than 90 Days | Residential Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 3,801,000 |  | 3,801,000 |  | 4,021,000
Greater than 90 Days | Commercial Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 5,355,000 |  | 5,355,000 |  | 5,528,000
Greater than 90 Days | Commercial |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 2,040,000 |  | 2,040,000 |  | 1,535,000
Greater than 90 Days | Home Equity |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 1,427,000 |  | 1,427,000 |  | 1,329,000
Greater than 90 Days | Consumer |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | 47,000 |  | 47,000 |  | 0
Greater than 90 Days | HPFC Portfolio Segment |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |
Total Past Due | $ 591,000 |  | $ 591,000 |  | $ 419,000

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