Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | Level in | | March 31, 2025 | | | December 31, 2024 | |
| | Fair | | | | | | | | | | | | | | | | |
| | Value | | Carrying | | | Fair | | | Carrying | | | Fair | |
(Dollars in thousands) | | Hierarchy | | Values | | | Values | | | Values | | | Values | |
Financial assets: | | | | | | | | | | | | | | | | | | | |
Cash and cash equivalents | | Level 1 | | $ | 385,460 | | | $ | 385,460 | | | $ | 393,010 | | | $ | 393,010 | |
Securities available for sale | | (1) | | | 787,583 | | | | 787,583 | | | | 730,352 | | | | 730,352 | |
FHLBI stock | | (2) | | | 21,513 | | | | 21,513 | | | | 21,513 | | | | 21,513 | |
Loans, net | | Level 3 | | | 4,579,883 | | | | 4,597,149 | | | | 4,546,327 | | | | 4,558,628 | |
Mortgage loans held for sale | | Level 2 | | | 15,192 | | | | 15,525 | | | | 15,824 | | | | 16,047 | |
Accrued interest receivable | | Level 2 | | | 22,901 | | | | 22,901 | | | | 21,401 | | | | 21,401 | |
Interest rate swaps | | Level 2 | | | 24,722 | | | | 24,722 | | | | 26,793 | | | | 26,793 | |
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Financial liabilities: | | | | | | | | | | | | | | | | | | | |
Deposits | | Level 2 | | | 4,681,785 | | | | 4,547,926 | | | | 4,698,366 | | | | 4,541,896 | |
Securities sold under agreements to repurchase | | Level 2 | | | 242,102 | | | | 242,102 | | | | 121,521 | | | | 121,521 | |
FHLBI advances | | Level 2 | | | 366,221 | | | | 357,003 | | | | 387,083 | | | | 374,499 | |
Subordinated debentures | | Level 2 | | | 50,501 | | | | 50,507 | | | | 50,330 | | | | 50,336 | |
Subordinated notes | | Level 2 | | | 89,400 | | | | 82,724 | | | | 89,314 | | | | 81,825 | |
Accrued interest payable | | Level 2 | | | 9,527 | | | | 9,527 | | | | 10,201 | | | | 10,201 | |
Interest rate swaps | | Level 2 | | | 25,073 | | | | 25,073 | | | | 27,050 | | | | 27,050 | |
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