v3.25.1
Note 11 - Fair Values of Financial Instruments - Fair Value Hierarchy of Financial Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Securities available for sale $ 787,583 $ 730,352
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure 15,500 16,000
Interest Rate Swap [Member]    
Interest rate swaps 24,722 26,793
Interest rate swaps 25,073 27,050
Fair Value, Inputs, Level 1 [Member]    
Securities available for sale 0 0
Reported Value Measurement [Member]    
Securities available for sale [1] 787,583 730,352
FHLBI stock [2] 21,513 21,513
Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and cash equivalents 385,460 393,010
Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]    
Loans, net 4,579,883 4,546,327
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]    
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure 15,192 15,824
Accrued interest receivable 22,901 21,401
Deposits 4,681,785 4,698,366
Securities sold under agreements to repurchase 242,102 121,521
FHLBI advances 366,221 387,083
Accrued interest payable 9,527 10,201
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Subordinated Debentures [Member]    
Subordinated debt 50,501 50,330
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Subordinated Notes [Member]    
Subordinated debt 89,400 89,314
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]    
Interest rate swaps 24,722 26,793
Interest rate swaps 25,073 27,050
Estimate of Fair Value Measurement [Member]    
Securities available for sale [1] 787,583 730,352
FHLBI stock [2] 21,513 21,513
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash and cash equivalents 385,460 393,010
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]    
Loans, net 4,597,149 4,558,628
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]    
Loan, Mortgage, Held-for-Sale, Fair Value Disclosure 15,525 16,047
Accrued interest receivable 22,901 21,401
Deposits 4,547,926 4,541,896
Securities sold under agreements to repurchase 242,102 121,521
FHLBI advances 357,003 374,499
Accrued interest payable 9,527 10,201
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Subordinated Debentures [Member]    
Subordinated debt 50,507 50,336
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Subordinated Notes [Member]    
Subordinated debt 82,724 81,825
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]    
Interest rate swaps 24,722 26,793
Interest rate swaps $ 25,073 $ 27,050
[1] See Note 12 for a description of the fair value hierarchy as well as a disclosure of levels for classes of financial assets and liabilities.
[2] It is not practical to determine the fair value of FHLBI stock due to transferability restrictions; therefore, fair value is estimated at carrying amount.