Acquisitions - Limestone Bancorp, Inc. Narrative (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 30, 2023 USD ($) branch shares	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($)
Business Acquisition [Line Items]
Salaries and employee benefit costs		$ 38,025	$ 27,585	$ 70,053	$ 55,314
Professional fees		7,438	2,280	10,319	5,952
FDIC insurance expense		1,464	1,018	2,265	2,212
Other non-interest expense		5,465	$ 3,398	10,039	$ 6,745
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		10,800		11,200
Salaries and employee benefit costs		5,200		5,200
Professional fees		4,800		5,100
FDIC insurance expense		500		500
Other non-interest expense		$ 300		400
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