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Fair Value - Carrying Amounts and Estimated Fair Values of Company's Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financial Assets: |  |
Interest Bearing Time Deposits with Banks | $ 500 | $ 500
Financial Liabilities: |  |
Demand, Savings, and Money Market Deposits | (7,014,502) | (5,329,075)
Time Deposits | (1,361,789) | (916,601)
Carrying Value |  |
Financial Assets: |  |
Cash and Short-term Investments | 255,648 | 188,792
Interest Bearing Time Deposits with Banks | 500 | 500
Loans, Net | 5,656,072 | 4,072,818
Accrued Interest Receivable | 37,048 | 31,280
Financial Liabilities: |  |
Demand, Savings, and Money Market Deposits | (5,652,713) | (4,412,474)
Time Deposits | (1,361,789) | (916,601)
Short-term Borrowings | (32,534) | (56,862)
Long-term Debt | (178,482) | (153,269)
Accrued Interest Payable | (10,883) | (8,468)
Estimate of Fair Value Measurement |  |
Financial Assets: |  |
Cash and Short-term Investments | 255,648 | 188,792
Interest Bearing Time Deposits with Banks | 500 | 500
Loans, Net | 5,593,129 | 3,993,595
Accrued Interest Receivable | 37,048 | 31,280
Financial Liabilities: |  |
Demand, Savings, and Money Market Deposits | (5,652,713) | (4,412,474)
Time Deposits | (1,355,826) | (911,059)
Short-term Borrowings | (32,534) | (56,862)
Long-term Debt | (180,524) | (152,801)
Accrued Interest Payable | (10,883) | (8,468)
Estimate of Fair Value Measurement | Level 1 |  |
Financial Assets: |  |
Cash and Short-term Investments | 112,718 | 69,249
Interest Bearing Time Deposits with Banks | 0 | 0
Loans, Net | 0 | 0
Accrued Interest Receivable | 0 | 0
Financial Liabilities: |  |
Demand, Savings, and Money Market Deposits | (5,652,713) | (4,412,474)
Time Deposits | 0 | 0
Short-term Borrowings | 0 | 0
Long-term Debt | 0 | 0
Accrued Interest Payable | 0 | 0
Estimate of Fair Value Measurement | Level 2 |  |
Financial Assets: |  |
Cash and Short-term Investments | 142,930 | 119,543
Interest Bearing Time Deposits with Banks | 500 | 500
Loans, Net | 0 | 0
Accrued Interest Receivable | 8,477 | 8,499
Financial Liabilities: |  |
Demand, Savings, and Money Market Deposits | 0 | 0
Time Deposits | (1,355,826) | (911,059)
Short-term Borrowings | (32,534) | (56,862)
Long-term Debt | (103,014) | (77,591)
Accrued Interest Payable | (10,550) | (8,116)
Estimate of Fair Value Measurement | Level 3 |  |
Financial Assets: |  |
Cash and Short-term Investments | 0 | 0
Interest Bearing Time Deposits with Banks | 0 | 0
Loans, Net | 5,593,129 | 3,993,595
Accrued Interest Receivable | 28,571 | 22,781
Financial Liabilities: |  |
Demand, Savings, and Money Market Deposits | 0 | 0
Time Deposits | 0 | 0
Short-term Borrowings | 0 | 0
Long-term Debt | (77,510) | (75,210)
Accrued Interest Payable | $ (333) | $ (352)

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