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FAIR VALUE MEASUREMENTS - FV of Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025 | Mar. 31, 2025
--- | --- | --- | ---
Assets: |  |  |
Securities held-to-maturity | $ 1,149,969 | $ 1,170,818 |
Mortgage servicing rights – multifamily and SBA | 57,630 | 58,095 | $ 0
Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Cash and cash equivalents | 483,513 | 1,029,983 |
Securities held-to-maturity | 1,149,969 | 1,170,818 |
Loan receivables, net | 13,193,078 | 13,665,520 |
Liabilities: |  |  |
Time deposits | 2,132,552 | 2,768,873 |
Long-term debt | 140,594 | 203,272 |
Carrying Value |  |  |
Assets: |  |  |
Cash and cash equivalents | 483,513 | 1,029,983 |
Securities held-to-maturity | 1,313,520 | 1,336,632 |
Loan receivables, net | 13,695,413 | 14,023,617 |
Liabilities: |  |  |
Time deposits | 2,144,670 | 2,784,608 |
Long-term debt | 128,815 | 192,014 |
Multifamily | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Mortgage servicing rights – multifamily and SBA | 27,282 | 28,276 |
Multifamily | Carrying Value |  |  |
Assets: |  |  |
Mortgage servicing rights – multifamily and SBA | 26,370 | 27,737 |
Level 1 | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Cash and cash equivalents | 483,513 | 1,029,983 |
Securities held-to-maturity | 0 | 0 |
Loan receivables, net | 0 | 0 |
Liabilities: |  |  |
Time deposits | 0 | 0 |
Long-term debt | 0 | 0 |
Level 1 | Multifamily | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Mortgage servicing rights – multifamily and SBA | 0 | 0 |
Level 2 | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Cash and cash equivalents | 0 | 0 |
Securities held-to-maturity | 1,146,969 | 1,167,818 |
Loan receivables, net |  | 0 |
Liabilities: |  |  |
Time deposits | 2,132,552 | 2,768,873 |
Long-term debt | 140,594 | 203,272 |
Level 2 | Multifamily | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Mortgage servicing rights – multifamily and SBA | 27,282 | 28,276 |
Level 3 | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Cash and cash equivalents | 0 | 0 |
Securities held-to-maturity | 3,000 | 3,000 |
Loan receivables, net | 13,193,078 | 13,665,520 |
Liabilities: |  |  |
Time deposits | 0 | 0 |
Long-term debt | 0 | 0 |
Level 3 | Multifamily | Estimate of Fair Value Measurement |  |  |
Assets: |  |  |
Mortgage servicing rights – multifamily and SBA | $ 0 | $ 0 |

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