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LOANS AND CREDIT QUALITY - Loans Credit Quality by Year and Type (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | $ 163,537 | $ 2,544,193
Financing receivable, year two | 2,544,019 | 1,797,256
Financing receivable, year three | 1,782,826 | 875,008
Financing receivable, year four | 805,099 | 533,369
Financing receivable, year five | 501,425 | 255,162
Financing receivable, prior to year five | 1,014,949 | 814,005
Revolving | 615,553 | 599,278
Revolving-term | 9,243 | 8,049
Total | 7,436,651 | 7,426,320
Recurring |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Single family LHFI | 1,269 | 5,868
Level 3 | Recurring |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Single family LHFI | 1,269 | 5,868
30-59 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 3,908 | 4,823
60-89 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 1,257 | 2,020
90+ days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 4,715 | 4,372
Commercial loans |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 146,364 | 2,266,245
Financing receivable, year two | 2,245,501 | 1,542,597
Financing receivable, year three | 1,490,163 | 722,015
Financing receivable, year four | 653,788 | 483,627
Financing receivable, year five | 453,027 | 210,966
Financing receivable, prior to year five | 748,046 | 577,415
Revolving | 260,745 | 257,715
Revolving-term | 2,581 | 4,032
Total | 6,000,215 | 6,064,612
Commercial loans | Non-owner occupied CRE |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 1,528 | 68,301
Financing receivable, year two | 68,192 | 68,356
Financing receivable, year three | 68,206 | 42,181
Financing receivable, year four | 41,558 | 139,760
Financing receivable, year five | 137,517 | 89,899
Financing receivable, prior to year five | 332,535 | 246,786
Revolving | 1,174 | 2,016
Revolving-term | 0 | 786
Total | 650,710 | 658,085
Commercial loans | Non-owner occupied CRE | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 1,528 | 68,301
Financing receivable, year two | 68,192 | 68,356
Financing receivable, year three | 68,206 | 42,181
Financing receivable, year four | 41,558 | 139,760
Financing receivable, year five | 120,283 | 87,197
Financing receivable, prior to year five | 303,392 | 242,544
Revolving | 1,174 | 2,016
Revolving-term | 0 | 786
Total | 604,333 | 651,141
Commercial loans | Non-owner occupied CRE | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 2,702
Financing receivable, prior to year five | 29,143 | 4,242
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 29,143 | 6,944
Commercial loans | Non-owner occupied CRE | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 17,234 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 17,234 | 0
Commercial loans | Multifamily |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 65,433 | 1,828,568
Financing receivable, year two | 1,817,799 | 1,165,434
Financing receivable, year three | 1,158,857 | 532,970
Financing receivable, year four | 510,951 | 241,808
Financing receivable, year five | 221,116 | 59,340
Financing receivable, prior to year five | 192,738 | 147,634
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 3,966,894 | 3,975,754
Commercial loans | Multifamily | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 65,433 | 1,828,568
Financing receivable, year two | 1,817,799 | 1,165,434
Financing receivable, year three | 1,158,857 | 528,077
Financing receivable, year four | 506,073 | 221,974
Financing receivable, year five | 218,747 | 59,340
Financing receivable, prior to year five | 185,323 | 140,126
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 3,952,232 | 3,943,519
Commercial loans | Multifamily | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 4,893
Financing receivable, year four | 4,878 | 19,834
Financing receivable, year five | 2,369 | 0
Financing receivable, prior to year five | 7,415 | 7,508
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 14,662 | 32,235
Commercial loans | Multifamily | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | Multifamily construction |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | (215) | 18,110
Financing receivable, year two | 33,089 | 63,394
Financing receivable, year three | 88,765 | 13,613
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 121,639 | 95,117
Commercial loans | Multifamily construction | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | (215) | 18,110
Financing receivable, year two | 33,089 | 63,394
Financing receivable, year three | 88,765 | 13,613
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 121,639 | 95,117
Commercial loans | Multifamily construction | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | Multifamily construction | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | CRE construction |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 341
Financing receivable, year two | 1,792 | 14,348
Financing receivable, year three | 14,457 | 3,960
Financing receivable, year four | 3,960 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 305
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 20,209 | 18,954
Commercial loans | CRE construction | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 341
Financing receivable, year two | 0 | 14,348
Financing receivable, year three | 14,457 | 3,960
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 305
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 14,457 | 18,954
Commercial loans | CRE construction | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 1,792 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 1,792 | 0
Commercial loans | CRE construction | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 3,960 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 3,960 | 0
Commercial loans | Single family construction |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 40,862 | 149,133
Financing receivable, year two | 92,812 | 57,718
Financing receivable, year three | 23,293 | 24,807
Financing receivable, year four | 3,881 | 519
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 73 | 74
Revolving | 114,387 | 123,303
Revolving-term | 0 | 0
Total | 275,308 | 355,554
Commercial loans | Single family construction | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 40,862 | 149,133
Financing receivable, year two | 92,812 | 50,936
Financing receivable, year three | 20,620 | 24,807
Financing receivable, year four | 3,881 | 519
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 73 | 74
Revolving | 114,387 | 123,303
Revolving-term | 0 | 0
Total | 272,635 | 348,772
Commercial loans | Single family construction | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | Single family construction | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 6,782
Financing receivable, year three | 2,673 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 2,673 | 6,782
Commercial loans | Single family construction to permanent |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 11,748 | 66,034
Financing receivable, year two | 97,491 | 76,814
Financing receivable, year three | 43,564 | 11,128
Financing receivable, year four | 4,405 | 3,268
Financing receivable, year five | 1,551 | 794
Financing receivable, prior to year five | 517 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 159,276 | 158,038
Commercial loans | Single family construction to permanent | Current |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 11,748 | 66,034
Financing receivable, year two | 97,491 | 76,814
Financing receivable, year three | 43,564 | 11,128
Financing receivable, year four | 4,405 | 3,268
Financing receivable, year five | 1,551 | 794
Financing receivable, prior to year five | 517 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 159,276 | 158,038
Commercial loans | Single family construction to permanent | 30-59 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | Single family construction to permanent | 60-89 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | Single family construction to permanent | 90+ days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 0
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 0
Commercial loans | Owner occupied CRE |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 10,516 | 70,192
Financing receivable, year two | 72,410 | 52,662
Financing receivable, year three | 51,330 | 44,778
Financing receivable, year four | 42,269 | 71,652
Financing receivable, year five | 69,286 | 44,785
Financing receivable, prior to year five | 187,663 | 158,187
Revolving | 3 | 3
Revolving-term | 923 | 1,104
Total | 434,400 | 443,363
Commercial loans | Owner occupied CRE | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 10,516 | 70,192
Financing receivable, year two | 70,913 | 51,919
Financing receivable, year three | 42,565 | 44,778
Financing receivable, year four | 42,269 | 71,652
Financing receivable, year five | 69,286 | 36,457
Financing receivable, prior to year five | 168,623 | 139,691
Revolving | 3 | 3
Revolving-term | 923 | 1,104
Total | 405,098 | 415,796
Commercial loans | Owner occupied CRE | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 1,497 | 743
Financing receivable, year three | 8,765 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 6,179
Financing receivable, prior to year five | 12,572 | 13,485
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 22,834 | 20,407
Commercial loans | Owner occupied CRE | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 2,149
Financing receivable, prior to year five | 6,468 | 5,011
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 6,468 | 7,160
Commercial loans | Commercial business |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 16,492 | 65,566
Financing receivable, year two | 61,916 | 43,871
Financing receivable, year three | 41,691 | 48,578
Financing receivable, year four | 46,764 | 26,620
Financing receivable, year five | 23,557 | 16,148
Financing receivable, prior to year five | 34,520 | 24,429
Revolving | 145,181 | 132,393
Revolving-term | 1,658 | 2,142
Total | 371,779 | 359,747
Commercial loans | Commercial business | Pass |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 16,492 | 65,566
Financing receivable, year two | 50,456 | 42,921
Financing receivable, year three | 34,782 | 45,940
Financing receivable, year four | 39,632 | 18,594
Financing receivable, year five | 16,065 | 13,548
Financing receivable, prior to year five | 27,333 | 18,779
Revolving | 140,606 | 130,427
Revolving-term | 1,399 | 2,041
Total | 326,765 | 337,816
Commercial loans | Commercial business | Special Mention |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 11,460 | 612
Financing receivable, year three | 3,949 | 0
Financing receivable, year four | 0 | 3,577
Financing receivable, year five | 3,668 | 9
Financing receivable, prior to year five | 2,169 | 3,444
Revolving | 4,414 | 403
Revolving-term | 176 | 0
Total | 25,836 | 8,045
Commercial loans | Commercial business | Substandard |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 338
Financing receivable, year three | 2,960 | 2,638
Financing receivable, year four | 7,132 | 4,449
Financing receivable, year five | 3,824 | 2,591
Financing receivable, prior to year five | 5,018 | 2,206
Revolving | 161 | 1,563
Revolving-term | 83 | 101
Total | 19,178 | 13,886
Consumer loans |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 17,173 | 277,948
Financing receivable, year two | 298,518 | 254,659
Financing receivable, year three | 292,663 | 152,993
Financing receivable, year four | 151,311 | 49,742
Financing receivable, year five | 48,398 | 44,196
Financing receivable, prior to year five | 266,903 | 236,590
Revolving | 354,808 | 341,563
Revolving-term | 6,662 | 4,017
Total | 1,436,436 | 1,361,708
Consumer loans | Single family |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 16,215 | 273,786
Financing receivable, year two | 295,209 | 253,937
Financing receivable, year three | 292,170 | 152,773
Financing receivable, year four | 151,153 | 49,592
Financing receivable, year five | 48,318 | 44,124
Financing receivable, prior to year five | 265,164 | 234,789
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 1,068,229 | 1,009,001
Consumer loans | Single family | Current |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 16,215 | 273,786
Financing receivable, year two | 295,209 | 253,937
Financing receivable, year three | 292,170 | 152,773
Financing receivable, year four | 151,153 | 49,302
Financing receivable, year five | 47,776 | 43,511
Financing receivable, prior to year five | 261,108 | 231,277
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 1,063,631 | 1,004,586
Consumer loans | Single family | 30-59 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 542 | 340
Financing receivable, prior to year five | 1,374 | 2,113
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 1,916 | 2,453
Consumer loans | Single family | 60-89 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 258
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 0 | 258
Consumer loans | Single family | 90+ days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 0 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 290
Financing receivable, year five | 0 | 273
Financing receivable, prior to year five | 2,682 | 1,141
Revolving | 0 | 0
Revolving-term | 0 | 0
Total | 2,682 | 1,704
Consumer loans | Home equity and other |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 958 | 4,162
Financing receivable, year two | 3,309 | 722
Financing receivable, year three | 493 | 220
Financing receivable, year four | 158 | 150
Financing receivable, year five | 80 | 72
Financing receivable, prior to year five | 1,739 | 1,801
Revolving | 354,808 | 341,563
Revolving-term | 6,662 | 4,017
Total | 368,207 | 352,707
Consumer loans | Home equity and other | Current |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 958 | 4,156
Financing receivable, year two | 3,297 | 692
Financing receivable, year three | 486 | 220
Financing receivable, year four | 158 | 150
Financing receivable, year five | 80 | 72
Financing receivable, prior to year five | 1,710 | 1,593
Revolving | 353,521 | 340,567
Revolving-term | 6,629 | 4,017
Total | 366,839 | 351,467
Consumer loans | Home equity and other | 30-59 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 3 | 6
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 4 | 9
Revolving | 695 | 446
Revolving-term | 26 | 0
Total | 728 | 461
Consumer loans | Home equity and other | 60-89 days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 6
Financing receivable, year two | 0 | 24
Financing receivable, year three | 7 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 0 | 48
Revolving | 6 | 517
Revolving-term | 0 | 0
Total | 13 | 595
Consumer loans | Home equity and other | 90+ days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Financing receivable, year one | 0 | 0
Financing receivable, year two | 9 | 0
Financing receivable, year three | 0 | 0
Financing receivable, year four | 0 | 0
Financing receivable, year five | 0 | 0
Financing receivable, prior to year five | 25 | 151
Revolving | 586 | 33
Revolving-term | 7 | 0
Total | $ 627 | $ 184

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