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Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	Mar. 20, 2023	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023
Finite Lived Intangible Assets [Line Items]
Goodwill, net		$ 196,461	$ 196,461
Purdum, Gray, Ingledue, Beck, Inc.
Finite Lived Intangible Assets [Line Items]
Goodwill, net		5,951			$ 6,000
Blackhawk Bancorp, Inc
Finite Lived Intangible Assets [Line Items]
Goodwill, net		$ 50,097		$ 50,100
Adjusted goodwill	$ 50,100

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