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LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Impaired Loan Balances and Associated Allowance by Portfolio Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | $ 15,235 | $ 4,658 | $ 14,858
Unpaid Principal Balance - with an allowance recorded | 15,235 | 4,695 | 14,858
Related Allowance | 1,734 | 1,280 | 2,007
Average Recorded Investment - with an allowance recorded | 15,075 | 5,184 | 9,418
Interest Income Recognized - with an allowance recorded | 26 | 27 | 106
Recorded Investment - without allowance recorded | 4,893 | 9,223 | 5,396
Unpaid Principal Balance - without allowance recorded | 6,893 | 11,617 | 7,756
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 5,166 | 9,486 | 6,970
Interest Income Recognized - without allowance recorded | 15 | 17 | 76
Impaired Financing Receivable, Recorded Investment | 20,128 | 13,881 | 20,254
Impaired financing receivable, unpaid principal balance | 22,128 | 16,312 | 22,614
Impaired Financing Receivable, Average Recorded Investment | 20,241 | 14,670 | 16,388
Impaired Financing Receivable, Interest Income, Accrual Method | 41 | 44 | 182
Residential Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 3,048 | 3,137 | 3,019
Unpaid Principal Balance - with an allowance recorded | 3,048 | 3,137 | 3,019
Related Allowance | 485 | 512 | 483
Average Recorded Investment - with an allowance recorded | 3,025 | 3,156 | 3,088
Interest Income Recognized - with an allowance recorded | 26 | 27 | 106
Recorded Investment - without allowance recorded | 1,360 | 2,896 | 1,329
Unpaid Principal Balance - without allowance recorded | 1,740 | 3,832 | 1,800
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 1,292 | 2,954 | 2,057
Interest Income Recognized - without allowance recorded | 2 | 2 | 9
Commercial Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 11,791 | 540 | 11,443
Unpaid Principal Balance - with an allowance recorded | 11,791 | 538 | 11,443
Related Allowance | 1,100 | 158 | 1,373
Average Recorded Investment - with an allowance recorded | 11,654 | 1,256 | 5,165
Recorded Investment - without allowance recorded | 1,400 | 2,590 | 1,874
Unpaid Principal Balance - without allowance recorded | 1,707 | 3,327 | 2,369
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 1,704 | 2,643 | 2,214
Interest Income Recognized - without allowance recorded | 10 | 11 | 51
Commercial |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 1 | 321 | 0
Unpaid Principal Balance - with an allowance recorded | 1 | 334 | 0
Related Allowance | 0 | 214 | 0
Average Recorded Investment - with an allowance recorded |  | 239 | 762
Recorded Investment - without allowance recorded | 1,993 | 3,541 | 2,028
Unpaid Principal Balance - without allowance recorded | 3,167 | 3,996 | 3,209
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 2,024 | 3,664 | 2,507
Interest Income Recognized - without allowance recorded | 3 | 4 | 16
Home Equity |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 297 | 303 | 299
Unpaid Principal Balance - with an allowance recorded | 297 | 303 | 299
Related Allowance | 83 | 89 | 86
Average Recorded Investment - with an allowance recorded | 298 | 303 | 305
Recorded Investment - without allowance recorded | 133 | 189 | 158
Unpaid Principal Balance - without allowance recorded | 269 | 452 | 368
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 139 | 218 | 180
Consumer |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 0 | 0 | 0
Unpaid Principal Balance - with an allowance recorded | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Average Recorded Investment - with an allowance recorded |  |  | 0
Recorded Investment - without allowance recorded | 7 | 7 | 7
Unpaid Principal Balance - without allowance recorded | 10 | 10 | 10
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 7 | 7 | 12
HPFC Portfolio Segment |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 98 | 357 | 97
Unpaid Principal Balance - with an allowance recorded | 98 | 383 | 97
Related Allowance | 66 | 307 | 65
Average Recorded Investment - with an allowance recorded | 98 | 230 | 98
Recorded Investment - without allowance recorded | 0 | 0 | 0
Unpaid Principal Balance - without allowance recorded | 0 | 0 | 0
Impaired Financing Receivable With No Related Allowance Related Allowance | $ 0 | $ 0 |
Average Recorded Investment - without allowance recorded |  |  | $ 0

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