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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Aug. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Apr. 01, 2024
Goodwill [Line Items]
Goodwill impairment	$ 0
Impairment charges				$ 0	$ 0
Amortization of other intangible assets		$ 7,425,000	$ 6,060,000	$ 12,880,000	$ 12,246,000
CapStar Financial Holdings, Inc.
Goodwill [Line Items]
Acquisitions and adjustments		172,000,000
Core deposit \| CapStar Financial Holdings, Inc.
Goodwill [Line Items]
Estimated useful lives						10 years
Estimated fair value of intangible assets acquired		$ 46,100,000
Minimum \| Core Deposits and Other Intangible Assets
Goodwill [Line Items]
Estimated useful lives		5 years		5 years
Maximum \| Core Deposits and Other Intangible Assets
Goodwill [Line Items]
Estimated useful lives		15 years		15 years