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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, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | $ 4,413 | $ 7,282 | $ 4,476
Unpaid Principal Balance - with an allowance recorded | 4,413 | 7,282 | 4,476
Related Allowance | 927 | 1,033 | 824
Average Recorded Investment - with an allowance recorded | 4,444 | 8,069 | 5,921
Interest Income Recognized - with an allowance recorded | 31 | 31 | 138
Recorded Investment - without allowance recorded | 1,851 | 3,943 | 2,450
Unpaid Principal Balance - without allowance recorded | 2,412 | 5,859 | 3,001
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 2,147 | 4,123 | 5,368
Interest Income Recognized - without allowance recorded | 15 | 14 | 55
Impaired Financing Receivable, Recorded Investment | 6,264 | 11,225 | 6,926
Impaired financing receivable, unpaid principal balance | 6,825 | 13,141 | 7,477
Impaired Financing Receivable, Average Recorded Investment | 6,591 | 12,192 | 11,289
Impaired Financing Receivable, Interest Income, Accrual Method | 46 | 45 | 193
Residential Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 3,454 | 3,544 | 3,471
Unpaid Principal Balance - with an allowance recorded | 3,454 | 3,544 | 3,471
Related Allowance | 553 | 553 | 586
Average Recorded Investment - with an allowance recorded | 3,462 | 3,745 | 3,591
Interest Income Recognized - with an allowance recorded | 30 | 30 | 127
Recorded Investment - without allowance recorded | 1,282 | 1,515 | 1,291
Unpaid Principal Balance - without allowance recorded | 1,406 | 1,791 | 1,415
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 1,286 | 1,350 | 1,524
Interest Income Recognized - without allowance recorded | 10 | 7 | 34
Commercial Real Estate |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 131 | 3,591 | 131
Unpaid Principal Balance - with an allowance recorded | 131 | 3,591 | 131
Related Allowance | 27 | 368 | 23
Average Recorded Investment - with an allowance recorded | 131 | 4,275 | 1,969
Interest Income Recognized - with an allowance recorded | 1 | 1 | 11
Recorded Investment - without allowance recorded | 279 | 370 | 799
Unpaid Principal Balance - without allowance recorded | 455 | 677 | 975
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 539 | 637 | 2,269
Interest Income Recognized - without allowance recorded | 3 | 3 | 13
Commercial |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 0 | 0 | 556
Unpaid Principal Balance - with an allowance recorded | 0 | 0 | 556
Related Allowance | 0 | 0 | 53
Average Recorded Investment - with an allowance recorded | 278 |  | 111
Recorded Investment - without allowance recorded | 223 | 1,714 | 230
Unpaid Principal Balance - without allowance recorded | 286 | 2,923 | 293
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 226 | 1,740 | 1,379
Interest Income Recognized - without allowance recorded | 2 | 2 | 8
Home Equity |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded Investment - with an allowance recorded | 828 | 147 | 318
Unpaid Principal Balance - with an allowance recorded | 828 | 147 | 318
Related Allowance | 347 | 112 | 162
Average Recorded Investment - with an allowance recorded | 573 | 49 | 250
Recorded Investment - without allowance recorded | 67 | 344 | 124
Unpaid Principal Balance - without allowance recorded | 265 | 468 | 305
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded | 96 | 396 | 195
Interest Income Recognized - without allowance recorded |  | 2 |
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 | 0 | 0 | 6
Unpaid Principal Balance - without allowance recorded | 0 | 0 | 13
Impaired Financing Receivable With No Related Allowance Related Allowance | 0 | 0 |
Average Recorded Investment - without allowance recorded |  |  | 1
HPFC Portfolio Segment |  |  |
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 | 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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