Acquisitions - Limestone Bancorp, Inc. Narrative (Details) $ in Thousands		3 Months Ended	12 Months Ended
	Apr. 30, 2023 USD ($) branch shares	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) shares
Business Acquisition [Line Items]
Professional fees			$ 17,041	$ 12,094	$ 15,783
Salaries and employee benefit costs			144,031	112,690	94,612
Other non-interest expense			25,033	15,476	21,573
Data processing and software expense			$ 21,607	$ 14,241	$ 10,542
Common Stock
Business Acquisition [Line Items]
Issuance of common shares related to the merger (in shares) | shares			6,827,668		8,589,685
Limestone Bancorp, Inc.
Business Acquisition [Line Items]
Number of branches operated | branch	20
Common shares paid (in shares) | shares	0.90
Equity interest issued	$ 177,900
Acquisition related costs			$ 16,900
Professional fees			6,000
Salaries and employee benefit costs			5,900
Other non-interest expense			2,900
Data processing and software expense			1,800
Various other non-interest expense			300
Contract termination fees		$ 1,800
Provision of credit losses excluded from pro forma			$ 8,100
Limestone Bancorp, Inc. | Common Stock
Business Acquisition [Line Items]
Issuance of common shares related to the merger (in shares) | shares	6,827,668