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LOANS AND CREDIT QUALITY - Aging Analysis (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 7,440,501 | $ 7,426,320
Nonaccrual | 38,765 | 10,055
Total past due and nonaccrual | $ 47,796 | $ 21,270
Nonaccrual, percent of total loans | 0.52% | 0.14%
Past due and nonaccrual, percent of total loans | 0.64% | 0.29%
Percent of total loans | 100.00% | 100.00%
Federal Housing Administration, Veteran Affairs, or Small Business Administration |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | $ 10,200 | $ 10,600
Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Single family LHFI | 1,225 | 5,868
Level 3 | Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Single family LHFI | 1,225 | 5,868
30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 4,081 | $ 4,823
Past due, percent of total loans | 0.06% | 0.06%
60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 1,613 | $ 2,020
Past due, percent of total loans | 0.02% | 0.03%
90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 3,337 | $ 4,372
Past due, percent of total loans | 0.04% | 0.06%
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 7,392,705 | $ 7,405,050
Not past due, percent of total loans | 99.36% | 99.71%
Commercial loans, adjusted for credit analysis | Real Estate Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 5,156,581 | $ 5,261,502
Nonaccrual | 20,472 | 0
Total past due and nonaccrual | 20,472 | 0
Commercial loans, adjusted for credit analysis | Real Estate Sector | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Real Estate Sector | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Real Estate Sector | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Real Estate Sector | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 5,136,109 | 5,261,502
Commercial loans, adjusted for credit analysis | Commercial and Industrial Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 813,401 | 803,110
Nonaccrual | 13,894 | 6,790
Total past due and nonaccrual | 13,894 | 6,790
Commercial loans, adjusted for credit analysis | Commercial and Industrial Sector | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial and Industrial Sector | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial and Industrial Sector | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial and Industrial Sector | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 799,507 | 796,320
Commercial loans, adjusted for credit analysis | Non-owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 633,083 | 658,085
Nonaccrual |  | 0
Total past due and nonaccrual | 16,601 | 0
Commercial loans, adjusted for credit analysis | Non-owner occupied CRE | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Non-owner occupied CRE | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Non-owner occupied CRE | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Non-owner occupied CRE | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 616,482 | 658,085
Commercial loans, adjusted for credit analysis | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,957,209 | 3,975,754
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,957,209 | 3,975,754
Commercial loans, adjusted for credit analysis | Multifamily construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 142,002 | 95,117
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Multifamily construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 142,002 | 95,117
Commercial loans, adjusted for credit analysis | CRE construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 18,337 | 18,954
Nonaccrual |  | 0
Total past due and nonaccrual | 3,871 | 0
Commercial loans, adjusted for credit analysis | CRE construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | CRE construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | CRE construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | CRE construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 14,466 | 18,954
Commercial loans, adjusted for credit analysis | Single family construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 268,359 | 355,554
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 268,359 | 355,554
Commercial loans, adjusted for credit analysis | Single family construction to permanent |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 137,591 | 158,038
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction to permanent | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction to permanent | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction to permanent | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Single family construction to permanent | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 137,591 | 158,038
Commercial loans, adjusted for credit analysis | Owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 428,253 | 443,363
Nonaccrual |  | 2,521
Total past due and nonaccrual | 2,136 | 2,521
Commercial loans, adjusted for credit analysis | Owner occupied CRE | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Owner occupied CRE | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Owner occupied CRE | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Owner occupied CRE | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 426,117 | 440,842
Commercial loans, adjusted for credit analysis | Commercial business |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 385,148 | 359,747
Nonaccrual |  | 4,269
Total past due and nonaccrual | 11,758 | 4,269
Commercial loans, adjusted for credit analysis | Commercial business | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial business | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial business | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial business | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 373,390 | 355,478
Consumer portfolio segment, adjusted for credit analysis |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,470,519 | 1,361,708
Nonaccrual | 4,399 | 3,265
Total past due and nonaccrual | 13,430 | 14,480
Consumer portfolio segment, adjusted for credit analysis | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 4,081 | 4,823
Consumer portfolio segment, adjusted for credit analysis | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,613 | 2,020
Consumer portfolio segment, adjusted for credit analysis | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,337 | 4,372
Consumer portfolio segment, adjusted for credit analysis | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,457,089 | 1,347,228
Consumer portfolio segment, adjusted for credit analysis | Single family |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,099,644 | 1,009,001
Nonaccrual | 3,437 | 2,584
Total past due and nonaccrual | 11,812 | 13,236
Consumer portfolio segment, adjusted for credit analysis | Single family | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,562 | 4,556
Consumer portfolio segment, adjusted for credit analysis | Single family | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,476 | 1,724
Consumer portfolio segment, adjusted for credit analysis | Single family | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,337 | 4,372
Consumer portfolio segment, adjusted for credit analysis | Single family | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,087,832 | 995,765
Consumer portfolio segment, adjusted for credit analysis | Home equity and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 370,875 | 352,707
Nonaccrual | 962 | 681
Total past due and nonaccrual | 1,618 | 1,244
Consumer portfolio segment, adjusted for credit analysis | Home equity and other | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 519 | 267
Consumer portfolio segment, adjusted for credit analysis | Home equity and other | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 137 | 296
Consumer portfolio segment, adjusted for credit analysis | Home equity and other | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Consumer portfolio segment, adjusted for credit analysis | Home equity and other | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 369,257 | $ 351,463

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