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LOANS AND CREDIT QUALITY - Aging Analysis (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | $ 5,542,849 | $ 5,244,180
Nonaccrual | $ 12,201 | $ 20,722
Nonaccrual, percent of total loans | 0.22% | 0.40%
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 | $ 8,400 | $ 14,700
Fair Value, Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Fair value of loans held for investment | 7,287 | 7,108
Level 3 | Fair Value, Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Fair value of loans held for investment | 7,287 | 7,108
30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | $ 1,208 | $ 2,389
Past due, percent of total loans | 0.02% | 0.05%
60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | $ 894 | $ 553
Past due, percent of total loans | 0.02% | 0.01%
90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | $ 6,717 | $ 11,476
Past due, percent of total loans | 0.12% | 0.22%
Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | $ 21,020 | $ 35,140
Past due and nonaccrual, percent of total loans | 0.38% | 0.67%
Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | $ 5,521,829 | $ 5,209,040
Not past due, percent of total loans | 99.62% | 99.33%
Commercial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | $ 8,591 | $ 14,105
Commercial loans | Owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 3,568 | 4,922
Commercial loans | Commercial business |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 5,023 | 9,183
Commercial Portfolio Segment, Adjusted For Credit Analysis | Real Estate Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 3,616,862 | 2,811,325
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Real Estate Sector | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Real Estate Sector | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Real Estate Sector | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Real Estate Sector | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Real Estate Sector | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 3,616,862 | 2,811,325
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial and Industrial Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 859,578 | 1,112,979
Nonaccrual | 8,591 | 14,105
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial and Industrial Sector | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 198 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial and Industrial Sector | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial and Industrial Sector | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial and Industrial Sector | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 8,789 | 14,105
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial and Industrial Sector | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 850,789 | 1,098,874
Commercial Portfolio Segment, Adjusted For Credit Analysis | Non-owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 705,359 | 829,538
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Non-owner occupied CRE | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Non-owner occupied CRE | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Non-owner occupied CRE | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Non-owner occupied CRE | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Non-owner occupied CRE | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 705,359 | 829,538
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 2,415,359 | 1,428,092
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 2,415,359 | 1,428,092
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 37,861 | 115,329
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily construction | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Multifamily construction | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 37,861 | 115,329
Commercial Portfolio Segment, Adjusted For Credit Analysis | CRE construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 14,172 | 27,285
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | CRE construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | CRE construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | CRE construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | CRE construction | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | CRE construction | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 14,172 | 27,285
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 296,027 | 259,170
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 296,027 | 259,170
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction to permanent |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 148,084 | 151,911
Nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction to permanent | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction to permanent | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction to permanent | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction to permanent | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Single family construction to permanent | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 148,084 | 151,911
Commercial Portfolio Segment, Adjusted For Credit Analysis | Owner occupied CRE |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 457,706 | 467,256
Nonaccrual | 3,568 | 4,922
Commercial Portfolio Segment, Adjusted For Credit Analysis | Owner occupied CRE | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Owner occupied CRE | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Owner occupied CRE | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Owner occupied CRE | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 3,568 | 4,922
Commercial Portfolio Segment, Adjusted For Credit Analysis | Owner occupied CRE | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 454,138 | 462,334
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial business |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 401,872 | 645,723
Nonaccrual | 5,023 | 9,183
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial business | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 198 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial business | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 |
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial business | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial business | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 5,221 | 9,183
Commercial Portfolio Segment, Adjusted For Credit Analysis | Commercial business | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 396,651 | 636,540
Consumer loans-single family |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 3,610 | 6,617
Consumer loans-single family | Single family |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 2,802 |
Consumer loans-single family | Home equity and other |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 808 |
Consumer Portfolio Segment, Adjusted For Credit Analysis |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 1,066,409 | 1,319,876
Nonaccrual | 3,610 | 6,617
Consumer Portfolio Segment, Adjusted For Credit Analysis | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 1,010 | 2,389
Consumer Portfolio Segment, Adjusted For Credit Analysis | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 894 | 553
Consumer Portfolio Segment, Adjusted For Credit Analysis | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 6,717 | 11,476
Consumer Portfolio Segment, Adjusted For Credit Analysis | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 12,231 | 21,035
Consumer Portfolio Segment, Adjusted For Credit Analysis | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 1,054,178 | 1,298,841
Consumer Portfolio Segment, Adjusted For Credit Analysis | Single family |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 763,331 | 915,123
Nonaccrual | 2,802 | 4,883
Consumer Portfolio Segment, Adjusted For Credit Analysis | Single family | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 892 | 2,161
Consumer Portfolio Segment, Adjusted For Credit Analysis | Single family | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 820 | 418
Consumer Portfolio Segment, Adjusted For Credit Analysis | Single family | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 6,717 | 11,476
Consumer Portfolio Segment, Adjusted For Credit Analysis | Single family | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 11,231 | 18,938
Consumer Portfolio Segment, Adjusted For Credit Analysis | Single family | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 752,100 | 896,185
Consumer Portfolio Segment, Adjusted For Credit Analysis | Home equity and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 303,078 | 404,753
Nonaccrual | 808 | 1,734
Consumer Portfolio Segment, Adjusted For Credit Analysis | Home equity and other | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 118 | 228
Consumer Portfolio Segment, Adjusted For Credit Analysis | Home equity and other | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 74 | 135
Consumer Portfolio Segment, Adjusted For Credit Analysis | Home equity and other | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | 0 | 0
Consumer Portfolio Segment, Adjusted For Credit Analysis | Home equity and other | Financial Asset, Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due and nonaccrual | 1,000 | 2,097
Consumer Portfolio Segment, Adjusted For Credit Analysis | Home equity and other | Financial Asset, Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance allowance for credit loss | $ 302,078 | $ 402,656

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