Other Borrowings - Summary of Terms of Outstanding Junior Subordinated Debentures (Details) - Trust Preferred Securities - Junior Subordinated Debentures	3 Months Ended
Mar. 31, 2025 USD ($)
Debt Instrument [Line Items]
Issuance Amount	$ 136,643,000
Bridgeview Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Variable rate	3.58%
Rate	8.13%
Bridgeview Capital Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Variable rate	3.35%
Rate	7.91%
First Midwest Capital Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 37,825,000
Rate	6.95%
Fixed rates	6.95%
St. Joseph Capital Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 5,155,000
Variable rate	1.75%
Rate	6.31%
Northern States Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 10,310,000
Variable rate	1.80%
Rate	6.36%
Anchor Capital Trust III
Debt Instrument [Line Items]
Issuance Amount	$ 5,000,000
Variable rate	1.55%
Rate	6.11%
Great Lakes Statutory Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 6,186,000
Variable rate	1.40%
Rate	5.96%
Home Federal Statutory Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 15,464,000
Variable rate	1.65%
Rate	6.21%
Monroe Bancorp Capital Trust I
Debt Instrument [Line Items]
Issuance Amount	$ 3,093,000
Variable rate	1.60%
Rate	6.16%
Tower Capital Trust 3
Debt Instrument [Line Items]
Issuance Amount	$ 9,279,000
Variable rate	1.69%
Rate	6.27%
Monroe Bancorp Statutory Trust II
Debt Instrument [Line Items]
Issuance Amount	$ 5,155,000
Variable rate	1.60%
Rate	6.16%
Great Lakes Statutory Trust III
Debt Instrument [Line Items]
Issuance Amount	$ 8,248,000
Variable rate	1.70%
Rate	6.26%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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