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LOANS AND CREDIT QUALITY - Aging Analysis (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 7,426,320 | $ 5,542,849
Nonaccrual | $ 10,055 | $ 12,201
Nonaccrual, percent of total loans | 0.14% | 0.22%
Total past due and nonaccrual | $ 21,270 | $ 21,020
Total past due and nonaccrual, percent of total loans | 0.29% | 0.38%
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 | $ 10,600 | $ 8,400
Fair Value, Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Single family LHFI | 5,868 | 7,287
Fair Value, Recurring | Level 3 |  |
Financing Receivable, Past Due [Line Items] |  |
Single family LHFI | 5,868 | 7,287
30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 4,823 | $ 1,208
Past due, percent of total loans | 0.06% | 0.02%
60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 2,020 | $ 894
Past due, percent of total loans | 0.03% | 0.02%
90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 4,372 | $ 6,717
Past due, percent of total loans | 0.06% | 0.12%
Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 7,405,050 | $ 5,521,829
Current, percent of total loans | 99.71% | 99.62%
Commercial business | Real Estate Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 5,261,502 | $ 3,616,862
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | Real Estate Sector | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Real Estate Sector | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Real Estate Sector | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Real Estate Sector | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 5,261,502 | 3,616,862
Commercial business | Commercial and Industrial Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 803,110 | 859,578
Nonaccrual | 6,790 | 8,591
Total past due and nonaccrual | 6,790 | 8,789
Commercial business | Commercial and Industrial Sector | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 198
Commercial business | Commercial and Industrial Sector | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Commercial and Industrial Sector | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Commercial and Industrial Sector | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 796,320 | 850,789
Commercial business | Non-owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 658,085 | 705,359
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | Non-owner occupied CRE | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Non-owner occupied CRE | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Non-owner occupied CRE | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Non-owner occupied CRE | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 658,085 | 705,359
Commercial business | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,975,754 | 2,415,359
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | Multifamily | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Multifamily | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Multifamily | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Multifamily | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 3,975,754 | 2,415,359
Commercial business | Multifamily construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 95,117 | 37,861
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | Multifamily construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Multifamily construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Multifamily construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Multifamily construction | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 95,117 | 37,861
Commercial business | CRE construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 18,954 | 14,172
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | CRE construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | CRE construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | CRE construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | CRE construction | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 18,954 | 14,172
Commercial business | Single family construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 355,554 | 296,027
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | Single family construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Single family construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Single family construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Single family construction | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 355,554 | 296,027
Commercial business | Single family construction to permanent |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 158,038 | 148,084
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial business | Single family construction to permanent | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Single family construction to permanent | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Single family construction to permanent | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Single family construction to permanent | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 158,038 | 148,084
Commercial business | Owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 443,363 | 457,706
Nonaccrual | 2,521 | 3,568
Total past due and nonaccrual | 2,521 | 3,568
Commercial business | Owner occupied CRE | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Owner occupied CRE | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Owner occupied CRE | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Owner occupied CRE | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 440,842 | 454,138
Commercial business | Commercial business |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 359,747 | 401,872
Nonaccrual | 4,269 | 5,023
Total past due and nonaccrual | 4,269 | 5,221
Commercial business | Commercial business | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 198
Commercial business | Commercial business | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Commercial business | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial business | Commercial business | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 355,478 | 396,651
Consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,361,708 | 1,066,409
Nonaccrual | 3,265 | 3,610
Total past due and nonaccrual | 14,480 | 12,231
Consumer loans | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 4,823 | 1,010
Consumer loans | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 2,020 | 894
Consumer loans | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 4,372 | 6,717
Consumer loans | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,347,228 | 1,054,178
Consumer loans | Single family |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,009,001 | 763,331
Nonaccrual | 2,584 | 2,802
Total past due and nonaccrual | 13,236 | 11,231
Consumer loans | Single family | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 4,556 | 892
Consumer loans | Single family | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,724 | 820
Consumer loans | Single family | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 4,372 | 6,717
Consumer loans | Single family | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 995,765 | 752,100
Consumer loans | Home equity and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 352,707 | 303,078
Nonaccrual | 681 | 808
Total past due and nonaccrual | 1,244 | 1,000
Consumer loans | Home equity and other | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 267 | 118
Consumer loans | Home equity and other | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 296 | 74
Consumer loans | Home equity and other | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Consumer loans | Home equity and other | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 351,463 | $ 302,078

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