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LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Business Activities Loans |  |
Recorded Investment |  |
Total | $ 44,770 | $ 43,679
Unpaid Principal Balance |  |
Total | 52,964 | 49,702
Related Allowance |  |
With an allowance recorded | 609 | 460
Business Activities Loans | Commercial Real Estate |  |
Recorded Investment |  |
Total | 33,430 | 34,001
Unpaid Principal Balance |  |
Total | 39,127 | 37,783
Related Allowance |  |
With an allowance recorded | 174 | 229
Business Activities Loans | Commercial Real Estate | Construction |  |
Recorded Investment |  |
With an allowance recorded |  | 159
Unpaid Principal Balance |  |
With an allowance recorded |  | 159
Related Allowance |  |
With an allowance recorded |  | 1
Business Activities Loans | Commercial Real Estate | Single and multi-family |  |
Recorded Investment |  |
With no related allowance | 0 | 1,077
With an allowance recorded | 309 | 159
Unpaid Principal Balance |  |
With no related allowance | 0 | 3,607
With an allowance recorded | 323 | 171
Related Allowance |  |
With an allowance recorded | 1 | 1
Business Activities Loans | Commercial Real Estate | Other |  |
Recorded Investment |  |
With no related allowance | 20,286 | 18,285
With an allowance recorded | 12,835 | 14,321
Unpaid Principal Balance |  |
With no related allowance | 23,042 | 18,611
With an allowance recorded | 15,762 | 15,235
Related Allowance |  |
With an allowance recorded | 173 | 227
Business Activities Loans | Commercial and industrial loans |  |
Recorded Investment |  |
Total | 7,006 | 5,776
Unpaid Principal Balance |  |
Total | 8,340 | 6,878
Related Allowance |  |
With an allowance recorded | 296 | 66
Business Activities Loans | Commercial and industrial loans | Other |  |
Recorded Investment |  |
With no related allowance | 3,091 | 2,060
With an allowance recorded | 3,915 | 3,716
Unpaid Principal Balance |  |
With no related allowance | 3,846 | 2,629
With an allowance recorded | 4,494 | 4,249
Related Allowance |  |
With an allowance recorded | 296 | 66
Business Activities Loans | Residential Mortgages |  |
Recorded Investment |  |
Total | 2,489 | 2,004
Unpaid Principal Balance |  |
Total | 3,013 | 2,521
Related Allowance |  |
With an allowance recorded | 137 | 130
Business Activities Loans | Residential Mortgages | 1-4 Family |  |
Recorded Investment |  |
With no related allowance | 1,011 | 660
With an allowance recorded | 1,478 | 1,344
Unpaid Principal Balance |  |
With no related allowance | 1,433 | 1,075
With an allowance recorded | 1,580 | 1,446
Related Allowance |  |
With an allowance recorded | 137 | 130
Business Activities Loans | Consumer Loans |  |
Recorded Investment |  |
Total | 1,845 | 1,898
Unpaid Principal Balance |  |
Total | 2,484 | 2,520
Related Allowance |  |
With an allowance recorded | 2 | 35
Business Activities Loans | Consumer Loans | Other |  |
Recorded Investment |  |
With no related allowance | 0 |
With an allowance recorded | 16 | 17
Unpaid Principal Balance |  |
With no related allowance | 0 |
With an allowance recorded | 16 | 17
Related Allowance |  |
With an allowance recorded | 1 | 1
Business Activities Loans | Consumer Loans | Home equity |  |
Recorded Investment |  |
With no related allowance | 1,784 | 867
With an allowance recorded | 45 | 1,014
Unpaid Principal Balance |  |
With no related allowance | 2,415 | 1,504
With an allowance recorded | 53 | 999
Related Allowance |  |
With an allowance recorded | 1 | 34
Acquired Loans |  |
Recorded Investment |  |
Total | 9,980 | 7,335
Unpaid Principal Balance |  |
Total | 14,895 | 9,178
Related Allowance |  |
With an allowance recorded | 580 | 111
Acquired Loans | Commercial Real Estate |  |
Recorded Investment |  |
Total | 5,433 | 4,257
Unpaid Principal Balance |  |
Total | 8,324 | 5,625
Related Allowance |  |
With an allowance recorded | 41 | 56
Acquired Loans | Commercial Real Estate | Single and multi-family |  |
Recorded Investment |  |
With no related allowance | 185 | 204
With an allowance recorded | 766 | 887
Unpaid Principal Balance |  |
With no related allowance | 276 | 290
With an allowance recorded | 763 | 880
Related Allowance |  |
With an allowance recorded | 12 | 18
Acquired Loans | Commercial Real Estate | Other |  |
Recorded Investment |  |
With no related allowance | 2,400 | 1,123
With an allowance recorded | 2,082 | 2,043
Unpaid Principal Balance |  |
With no related allowance | 5,192 | 2,794
With an allowance recorded | 2,093 | 1,661
Related Allowance |  |
With an allowance recorded | 29 | 38
Acquired Loans | Commercial and industrial loans |  |
Recorded Investment |  |
With no related allowance | 574 | 255
With an allowance recorded | 178 | 165
Total | 752 | 420
Unpaid Principal Balance |  |
With no related allowance | 1,618 | 310
With an allowance recorded | 176 | 166
Total | 1,794 | 476
Related Allowance |  |
With an allowance recorded | 3 | 1
Acquired Loans | Residential Mortgages |  |
Recorded Investment |  |
Total | 2,701 | 824
Unpaid Principal Balance |  |
Total | 3,094 | 856
Related Allowance |  |
With an allowance recorded | 506 | 9
Acquired Loans | Residential Mortgages | 1-4 Family |  |
Recorded Investment |  |
With no related allowance | 697 | 658
With an allowance recorded | 2,004 | 166
Unpaid Principal Balance |  |
With no related allowance | 709 | 671
With an allowance recorded | 2,385 | 185
Related Allowance |  |
With an allowance recorded | 506 | 9
Acquired Loans | Consumer Loans |  |
Recorded Investment |  |
Total | 1,094 | 1,834
Unpaid Principal Balance |  |
Total | 1,683 | 2,221
Related Allowance |  |
With an allowance recorded | 30 | 45
Acquired Loans | Consumer Loans | Other |  |
Recorded Investment |  |
With no related allowance | 17 | 27
Unpaid Principal Balance |  |
With no related allowance | 18 | 27
Acquired Loans | Consumer Loans | Home equity |  |
Recorded Investment |  |
With no related allowance | 754 | 1,374
With an allowance recorded | 323 | 433
Unpaid Principal Balance |  |
With no related allowance | 1,303 | 1,654
With an allowance recorded | 362 | 540
Related Allowance |  |
With an allowance recorded | $ 30 | $ 45

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