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LOANS AND CREDIT QUALITY - Aging Analysis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 5,354,257 | $ 5,244,180
Nonaccrual | 17,712 | 20,722
Total past due and nonaccrual | $ 28,829 | $ 35,140
Nonaccrual, percent of total loans | 0.33% | 0.40%
Past due and nonaccrual, percent of total loans | 0.54% | 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 | $ 10,800 | $ 14,700
Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Fair value of loans held for investment | 4,507 | 7,108
Level 3 | Recurring |  |
Financing Receivable, Past Due [Line Items] |  |
Fair value of loans held for investment | 4,507 | 7,108
30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 1,554 | $ 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 | $ 1,202 | $ 553
Past due, percent of total loans | 0.02% | 0.01%
90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 8,361 | $ 11,476
Past due, percent of total loans | 0.16% | 0.22%
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 5,325,428 | $ 5,209,040
Not past due, percent of total loans | 99.46% | 99.33%
Commercial loans, adjusted for credit analysis | Real Estate Sector |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | $ 3,358,509 | $ 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 | 3,358,509 | 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 | 886,106 | 1,112,979
Nonaccrual | 11,123 | 14,105
Total past due and nonaccrual | 11,123 | 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 | 874,983 | 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 | 754,031 | 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 | 754,031 | 829,538
Commercial loans, adjusted for credit analysis | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 2,090,156 | 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 |
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 | 2,090,156 | 1,428,092
Commercial loans, adjusted for credit analysis | Multifamily construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 50,305 | 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 | 50,305 | 115,329
Commercial loans, adjusted for credit analysis | Commercial real estate construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 17,906 | 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 | 17,906 | 27,285
Commercial loans, adjusted for credit analysis | Single family construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 303,276 | 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 | 303,276 | 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 | 142,835 | 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 | 142,835 | 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 | 450,350 | 467,256
Nonaccrual | 3,874 | 4,922
Total past due and nonaccrual | 3,874 | 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 |
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 | 446,476 | 462,334
Commercial loans, adjusted for credit analysis | Commercial business |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 435,756 | 645,723
Nonaccrual | 7,249 | 9,183
Total past due and nonaccrual | 7,249 | 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 |
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 | 428,507 | 636,540
Consumer loans, adjusted for credit analysis |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,109,642 | 1,319,876
Nonaccrual | 6,589 | 6,617
Total past due and nonaccrual | 17,706 | 21,035
Consumer loans, adjusted for credit analysis | 30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,554 | 2,389
Consumer loans, adjusted for credit analysis | 60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,202 | 553
Consumer loans, adjusted for credit analysis | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 8,361 | 11,476
Consumer loans, adjusted for credit analysis | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 1,091,936 | 1,298,841
Consumer loans, adjusted for credit analysis | Single family |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 793,927 | 915,123
Total past due and nonaccrual | 15,455 | 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 | 1,294 | 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 | 1,198 | 418
Consumer loans, adjusted for credit analysis | Single family | 90+ days |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 8,361 | 11,476
Consumer loans, adjusted for credit analysis | Single family | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 778,472 | 896,185
Consumer loans, adjusted for credit analysis | Home equity and other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans before allowance for credit loss | 315,715 | 404,753
Total past due and nonaccrual | 2,251 | 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 | 260 | 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 | 4 | 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 | $ 313,464 | $ 402,656

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