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LOANS AND CREDIT QUALITY - Aging Analysis (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 5,392,523 | $ 5,244,180
Nonaccrual | 20,835 | 20,722
Total past due and nonaccrual | $ 32,836 | $ 35,140
Nonaccrual, percent of total loans | 0.39% | 0.40%
Past due and nonaccrual, percent of total loans | 0.61% | 0.67%
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 | $ 13,300 | $ 14,700
Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Fair value of loans held for investment | 5,207 | 7,108
Level 3 | Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Fair value of loans held for investment | 5,207 | 7,108
30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 1,467 | $ 2,389
Past due, percent of total loans | 0.03% | 0.05%
60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 803 | $ 553
Past due, percent of total loans | 0.01% | 0.01%
90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 9,731 | $ 11,476
Past due, percent of total loans | 0.18% | 0.22%
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 5,359,687 | $ 5,209,040
Not past due, percent of total loans | 99.39% | 99.33%
Commercial loans, adjusted for credit analysis | Real Estate Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 3,213,031 | $ 2,811,325
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 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 | 3,213,031 | 2,811,325
Commercial loans, adjusted for credit analysis | Commercial and Industrial Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,032,626 | 1,112,979
Nonaccrual | 13,800 | 14,105
Total past due and nonaccrual | 13,800 | 14,105
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 | 1,018,826 | 1,098,874
Commercial loans, adjusted for credit analysis | Non-owner occupied commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 761,754 | 829,538
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial loans, adjusted for credit analysis | Non-owner occupied commercial real estate | 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 commercial real estate | 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 commercial real estate | 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 commercial real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 761,754 | 829,538
Commercial loans, adjusted for credit analysis | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,966,995 | 1,428,092
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 | 1,966,995 | 1,428,092
Commercial loans, adjusted for credit analysis | Multifamily construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 43,300 | 115,329
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 | 43,300 | 115,329
Commercial loans, adjusted for credit analysis | Commercial real estate construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 29,956 | 27,285
Nonaccrual | 0 | 0
Total past due and nonaccrual | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial real estate construction | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial real estate construction | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial real estate construction | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Commercial real estate construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 29,956 | 27,285
Commercial loans, adjusted for credit analysis | Single family construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 276,206 | 259,170
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 | 276,206 | 259,170
Commercial loans, adjusted for credit analysis | Single family construction to permanent |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 134,820 | 151,911
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 | 134,820 | 151,911
Commercial loans, adjusted for credit analysis | Owner occupied commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 457,504 | 467,256
Nonaccrual | 4,910 | 4,922
Total past due and nonaccrual | 4,910 | 4,922
Commercial loans, adjusted for credit analysis | Owner occupied commercial real estate | 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 commercial real estate | 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 commercial real estate | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 0 | 0
Commercial loans, adjusted for credit analysis | Owner occupied commercial real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 452,594 | 462,334
Commercial loans, adjusted for credit analysis | Commercial business |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 575,122 | 645,723
Nonaccrual | 8,890 | 9,183
Total past due and nonaccrual | 8,890 | 9,183
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 | 566,232 | 636,540
Consumer loans, adjusted for credit analysis |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,146,866 | 1,319,876
Nonaccrual | 7,035 | 6,617
Total past due and nonaccrual | 19,036 | 21,035
Consumer loans, adjusted for credit analysis | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,467 | 2,389
Consumer loans, adjusted for credit analysis | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 803 | 553
Consumer loans, adjusted for credit analysis | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 9,731 | 11,476
Consumer loans, adjusted for credit analysis | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,127,830 | 1,298,841
Consumer loans, adjusted for credit analysis | Single family |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 812,287 | 915,123
Nonaccrual | 4,944 | 4,883
Total past due and nonaccrual | 16,932 | 18,938
Consumer loans, adjusted for credit analysis | Single family | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,461 | 2,161
Consumer loans, adjusted for credit analysis | Single family | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 796 | 418
Consumer loans, adjusted for credit analysis | Single family | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 9,731 | 11,476
Consumer loans, adjusted for credit analysis | Single family | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 795,355 | 896,185
Consumer loans, adjusted for credit analysis | Home equity and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 334,579 | 404,753
Nonaccrual | 2,091 | 1,734
Total past due and nonaccrual | 2,104 | 2,097
Consumer loans, adjusted for credit analysis | Home equity and other | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 6 | 228
Consumer loans, adjusted for credit analysis | Home equity and other | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 7 | 135
Consumer loans, 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 loans, adjusted for credit analysis | Home equity and other | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 332,475 | $ 402,656

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