Acquisitions - Limestone Bancorp, Inc. Narrative (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Apr. 30, 2023 USD ($) branch shares	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) shares	Sep. 30, 2022 USD ($)
Business Acquisition [Line Items]
Other non-interest expense		$ 9,820	$ 4,010	$ 19,859	$ 10,755
Data processing and software expense		6,288	3,279	15,578	9,228
Salaries and employee benefit costs		36,608	28,618	106,661	83,932
Professional fees		3,456	$ 2,832	13,775	$ 8,784
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 cost		4,400		15,700
Other non-interest expense		2,100		3,000
Data processing and software expense		1,300		1,300
Salaries and employee benefit costs		600		5,700
Professional fees		400		5,500
Various other non-interest expense				200
Contract termination fees		$ 1,800
Provision of credit losses excluded from pro forma				$ 9,400
Limestone Bancorp, Inc. | Common Shares
Business Acquisition [Line Items]
Issuance of common shares related to the merger with Limestone Bancorp, Inc. (in shares) | shares	6,827,668			6,827,668