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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments - Other Investments (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
LIHTC |  |  |
Investments | $ 192,616,000 |  | $ 186,369,000
Estimated tax credits | 16,282,000 | $ 11,266,000 |
Estimated amortization | $ 13,084,000 | 12,437,000 |
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] | Net Income (Loss), Including Portion Attributable to Noncontrolling Interest |  |
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Noninterest Expense |  |
Impairment losses | $ 0 | $ 0 |
Other liabilities |  |  |
LIHTC |  |  |
Unfunded commitments | $ 32,504,000 |  | $ 25,064,000

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