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LOANS AND CREDIT QUALITY - Activity in Allowance for Credit Losses by Loan Portfolio (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Accounting Standards Update [Extensible List] |  |  |  |  | us-gaap:AccountingStandardsUpdate201613Member
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | $ 64,047 | $ 58,299 | $ 64,294 | $ 41,772 |
Impact of ASC 326 adoption | 59,897 | 65,000 | 59,897 | 65,000 | $ 41,772
Charge-offs | (79) | (88) | (205) | (448) |
Recoveries | 74 | 84 | 324 | 473 |
(Reversal of) Provision | (4,145) | 6,705 | (4,516) | 21,360 |
Ending balance | 59,897 | 65,000 | 59,897 | 65,000 | 41,772
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 1,843 |
Impact of ASC 326 adoption |  |  |  |  | 1,843
Ending balance |  |  |  |  | 1,843
Commercial loans | Real Estate Sector |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 28,162 | 24,983 | 27,935 | 22,535 |
Impact of ASC 326 adoption | 25,544 | 24,347 | 25,544 | 24,347 | 22,535
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 163 |
(Reversal of) Provision | (2,618) | (636) | (2,391) | 2,960 |
Ending balance | 25,544 | 24,347 | 25,544 | 24,347 | 22,535
Commercial loans | Real Estate Sector | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | (1,311) |
Impact of ASC 326 adoption |  |  |  |  | (1,311)
Ending balance |  |  |  |  | (1,311)
Commercial loans | Commercial and Industrial Sector |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 22,371 | 12,321 | 22,037 | 6,554 |
Impact of ASC 326 adoption | 21,392 | 21,457 | 21,392 | 21,457 | 6,554
Charge-offs | 0 | 0 | 0 | (143) |
Recoveries | 24 | 24 | 98 | 48 |
(Reversal of) Provision | (1,003) | 9,112 | (743) | 16,947 |
Ending balance | 21,392 | 21,457 | 21,392 | 21,457 | 6,554
Commercial loans | Commercial and Industrial Sector | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | (1,949) |
Impact of ASC 326 adoption |  |  |  |  | (1,949)
Ending balance |  |  |  |  | (1,949)
Commercial loans | Non-owner occupied commercial real estate |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 9,218 | 9,021 | 8,845 | 7,245 |
Impact of ASC 326 adoption | 9,077 | 7,325 | 9,077 | 7,325 | 7,245
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
(Reversal of) Provision | (141) | (1,696) | 232 | 3,472 |
Ending balance | 9,077 | 7,325 | 9,077 | 7,325 | 7,245
Commercial loans | Non-owner occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | (3,392) |
Impact of ASC 326 adoption |  |  |  |  | (3,392)
Ending balance |  |  |  |  | (3,392)
Commercial loans | Multifamily |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 6,969 | 4,265 | 6,072 | 7,015 |
Impact of ASC 326 adoption | 7,245 | 5,387 | 7,245 | 5,387 | 7,015
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
(Reversal of) Provision | 276 | 1,122 | 1,173 | 1,349 |
Ending balance | 7,245 | 5,387 | 7,245 | 5,387 | 7,015
Commercial loans | Multifamily | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | (2,977) |
Impact of ASC 326 adoption |  |  |  |  | (2,977)
Ending balance |  |  |  |  | (2,977)
Commercial loans | Multifamily construction |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 3,936 | 3,218 | 4,903 | 2,848 |
Impact of ASC 326 adoption | 500 | 3,811 | 500 | 3,811 | 2,848
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
(Reversal of) Provision | (3,436) | 593 | (4,403) | 270 |
Ending balance | 500 | 3,811 | 500 | 3,811 | 2,848
Commercial loans | Multifamily construction | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 693 |
Impact of ASC 326 adoption |  |  |  |  | 693
Ending balance |  |  |  |  | 693
Commercial loans | Commercial real estate construction |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 1,908 | 382 | 1,670 | 624 |
Impact of ASC 326 adoption | 2,022 | 440 | 2,022 | 440 | 624
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
(Reversal of) Provision | 114 | 58 | 352 | (69) |
Ending balance | 2,022 | 440 | 2,022 | 440 | 624
Commercial loans | Commercial real estate construction | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | (115) |
Impact of ASC 326 adoption |  |  |  |  | (115)
Ending balance |  |  |  |  | (115)
Commercial loans | Single family construction |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 5,007 | 6,585 | 5,130 | 3,800 |
Impact of ASC 326 adoption | 5,653 | 5,869 | 5,653 | 5,869 | 3,800
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 |  | 0 | 163 |
(Reversal of) Provision | 646 | (716) | 523 | (2,374) |
Ending balance | 5,653 | 5,869 | 5,653 | 5,869 | 3,800
Commercial loans | Single family construction | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 4,280 |
Impact of ASC 326 adoption |  |  |  |  | 4,280
Ending balance |  |  |  |  | 4,280
Commercial loans | Single family construction to permanent |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 1,124 | 1,512 | 1,315 | 1,003 |
Impact of ASC 326 adoption | 1,047 | 1,515 | 1,047 | 1,515 | 1,003
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
(Reversal of) Provision | (77) | 3 | (268) | 312 |
Ending balance | 1,047 | 1,515 | 1,047 | 1,515 | 1,003
Commercial loans | Single family construction to permanent | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 200 |
Impact of ASC 326 adoption |  |  |  |  | 200
Ending balance |  |  |  |  | 200
Commercial loans | Owner occupied commercial real estate |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 5,266 | 4,160 | 4,994 | 3,639 |
Impact of ASC 326 adoption | 5,518 | 5,641 | 5,518 | 5,641 | 3,639
Charge-offs | 0 | 0 |  |  |
Recoveries | 0 | 0 | 0 | 0 |
(Reversal of) Provision | 252 | 1,481 | 524 | 4,461 |
Ending balance | 5,518 | 5,641 | 5,518 | 5,641 | 3,639
Commercial loans | Owner occupied commercial real estate | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | (2,459) |
Impact of ASC 326 adoption |  |  |  |  | (2,459)
Ending balance |  |  |  |  | (2,459)
Commercial loans | Commercial business |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 17,105 | 8,161 | 17,043 | 2,915 |
Impact of ASC 326 adoption | 15,874 | 15,816 | 15,874 | 15,816 | 2,915
Charge-offs | 0 |  | 0 | (143) |
Recoveries | 24 | 24 | 98 | 48 |
(Reversal of) Provision | (1,255) | 7,631 | (1,267) | 12,486 |
Ending balance | 15,874 | 15,816 | 15,874 | 15,816 | 2,915
Commercial loans | Commercial business | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 510 |
Impact of ASC 326 adoption |  |  |  |  | 510
Ending balance |  |  |  |  | 510
Consumer loans |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 13,514 | 20,995 | 14,322 | 12,683 |
Impact of ASC 326 adoption | 12,961 | 19,196 | 12,961 | 19,196 | 12,683
Charge-offs | (79) | (88) | (205) | (305) |
Recoveries | 50 | 60 | 226 | 262 |
(Reversal of) Provision | (524) | (1,771) | (1,382) | 1,453 |
Ending balance | 12,961 | 19,196 | 12,961 | 19,196 | 12,683
Consumer loans | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 5,103 |
Impact of ASC 326 adoption |  |  |  |  | 5,103
Ending balance |  |  |  |  | 5,103
Consumer loans | Single family |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 6,735 | 8,587 | 6,906 | 6,450 |
Impact of ASC 326 adoption | 7,163 | 8,070 | 7,163 | 8,070 | 6,450
Charge-offs | (44) | 0 | (114) | 0 |
Recoveries | 2 | 1 | 122 | 54 |
(Reversal of) Provision | 470 | (518) | 249 | 1,098 |
Ending balance | 7,163 | 8,070 | 7,163 | 8,070 | 6,450
Consumer loans | Single family | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | 468 |
Impact of ASC 326 adoption |  |  |  |  | 468
Ending balance |  |  |  |  | 468
Consumer loans | Home equity and other |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance | 6,779 | 12,408 | 7,416 | 6,233 |
Impact of ASC 326 adoption | 5,798 | 11,126 | 5,798 | 11,126 | 6,233
Charge-offs | (35) | (88) | (91) | (305) |
Recoveries | 48 | 59 | 104 | 208 |
(Reversal of) Provision | (994) | (1,253) | (1,631) | 355 |
Ending balance | $ 5,798 | $ 11,126 | $ 5,798 | 11,126 | 6,233
Consumer loans | Home equity and other | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses by loan portfolio |  |  |  |  |
Beginning balance |  |  |  | $ 4,635 |
Impact of ASC 326 adoption |  |  |  |  | 4,635
Ending balance |  |  |  |  | $ 4,635

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