Acquisitions - Limestone Bancorp, Inc. (Details) - USD ($) $ in Thousands		Apr. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Loans and leases	[1]		$ 6,159,196	$ 4,707,150
Allowance for credit losses (on PCD loans)			(62,011)	(53,162)	$ (63,967)
Net loans			6,097,185	4,653,988
Other intangible assets			27,722	15,284
Liabilities
Goodwill			362,169	$ 292,397	$ 264,193
Limestone Bancorp, Inc.
Business Acquisition [Line Items]
Total purchase price		$ 177,931
Assets
Cash and balances due from banks		6,422
Interest-bearing deposits in other banks		87,115
Total cash and cash equivalents		93,537
Loans and leases		1,077,929
Allowance for credit losses (on PCD loans)		(2,051)
Net loans		1,075,878
Bank premises and equipment, net of accumulated depreciation		17,690
Bank owned life insurance		31,343
Other intangible assets		27,722
Other assets		36,874
Total assets		1,455,704
Liabilities
Deposits		1,234,184
Short-term borrowings		60,000
Long-term borrowings		39,453
Accrued expenses and other liabilities		12,967
Total liabilities		1,346,604
Net assets		109,100
Goodwill		68,831	$ 68,800
Limestone Bancorp, Inc. | Non-interest-bearing
Liabilities
Deposits		262,727
Limestone Bancorp, Inc. | Interest-bearing
Liabilities
Deposits		971,457
Limestone Bancorp, Inc. | Available-for-sale investment securities, at fair value
Assets
Investment securities		166,944
Limestone Bancorp, Inc. | Other investment securities
Assets
Investment securities		5,716
Limestone Bancorp, Inc. | Total investment securities
Assets
Investment securities		$ 172,660

[1] Also referred to throughout this Form 10-K as “total loans” and “loans held for investment.”