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LOANS (Schedule of Balances by Portfolio Class, Based on Impairment Method) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Total Loans Individually Evaluated for Impairment | $ 23,065 | $ 29,071 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment | 522 | 824 |  |
Total Loans Collectively Evaluated for Impairment | 3,679,467 | 3,281,033 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 35,918 | 31,384 |  |
Total Loans | 3,702,532 | 3,310,104 |  |
Total Ending ALLL | 36,440 | 32,208 | $ 25,856 | $ 19,480
Residential Portfolio Segment [Member] | Junior Lien [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment | 52 | 229 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 7,021 | 8,977 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 12 | 16 |  |
Total Loans | 7,073 | 9,206 |  |
Total Ending ALLL | 12 | 16 | 66 | 109
Consumer and Other [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment |  |  |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 92 | 73,621 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 1 | 243 |  |
Total Loans | 99,247 | 73,621 |  |
Total Ending ALLL | 349 | 243 | 112 | 96
Primary Residential Mortgages [Member] | Residential Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment | 9,802 | 15,814 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment | 482 | 456 |  |
Total Loans Collectively Evaluated for Impairment | 595,767 | 542,156 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 3,603 | 3,210 |  |
Total Loans | 605,569 | 557,970 |  |
Total Ending ALLL | 4,085 | 3,666 | 2,297 | 2,923
Home Equity Lines of Credit [Member] | Residential Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment | 27 | 53 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 67,470 | 65,630 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 221 | 233 |  |
Total Loans | 67,497 | 65,683 |  |
Total Ending ALLL | 221 | 233 | 86 | 156
Multifamily Property [Member] | Residential Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment |  |  |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 1,388,958 | 1,459,594 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 10,007 | 11,192 |  |
Total Loans | 1,388,958 | 1,459,594 |  |
Total Ending ALLL | 10,007 | 11,192 | 11,813 | 8,983
Owner Occupied Property [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment | 2,503 | 1,486 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 250,989 | 174,637 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 2,385 | 1,774 |  |
Total Loans | 253,492 | 176,123 |  |
Total Ending ALLL | 2,385 | 1,774 | 1,679 | 1,547
Investment Property [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment | 10,681 | 11,335 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment | 40 | 214 |  |
Total Loans Collectively Evaluated for Impairment | 863,417 | 740,923 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 11,893 | 10,695 |  |
Total Loans | 874,098 | 752,258 |  |
Total Ending ALLL | 11,933 | 10,909 | 7,590 | 4,751
Construction Loans [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment |  |  |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 160 | 1,497 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment |  | 9 |  |
Total Loans | 92 | 1,497 |  |
Total Ending ALLL | 1 | 9 | 2 | 31
Commercial and Industrial Sector [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment |  | 154 |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  | 154 |  |
Total Loans Collectively Evaluated for Impairment | 316,294 | 213,829 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 6,563 | 4,010 |  |
Total Loans | 316,294 | 213,983 |  |
Total Ending ALLL | 6,563 | 4,164 | 2,209 | 880
Agricultural Sector [Member] |  |  |  |
Total Loans Individually Evaluated for Impairment |  |  |  |
Ending ALLL Attributable to Loans Individually Evaluated for Impairment |  |  |  |
Total Loans Collectively Evaluated for Impairment | 90,052 | 169 |  |
Ending ALLL Attributable to Loans Collectively Evaluated for Impairment | 884 | 2 |  |
Total Loans | 160 | 169 |  |
Total Ending ALLL |  | $ 2 | $ 2 | $ 4

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