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Income Taxes - Unrecognized Tax Benefits (Details) - First Midwest - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of period	$ 6,994	$ 9,955	$ 11,007
Additions for acquired uncertain tax positions	8,178	0	0
Additions based on tax positions related to prior years	2,152	0	60
Reductions due to statute of limitations expiring	(1,579)	(2,961)	(1,112)
Balance at end of period	$ 15,745	$ 6,994	$ 9,955

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of unrecognized tax benefits.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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