Acquisitions - Vantage Financial Summary (Details) - USD ($) $ in Thousands	Mar. 07, 2022	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Other intangible assets		$ 27,722	$ 15,284
Liabilities
Goodwill		$ 355,106	292,397	$ 264,193
Vantage Financial LLC
Business Acquisition [Line Items]
Total purchase price	$ 82,893
Assets
Cash and due from banks	1,444
Leases	155,726
Allowance for credit losses (on PCD leases)	(801)
Net leases	154,925
Bank premises and equipment	116
Other intangible assets	13,207
Other assets	1,506
Total assets	171,198
Liabilities
Borrowings	106,919
Accrued expenses and other liabilities	8,550
Total liabilities	115,469
Net assets	55,729
Goodwill	$ 27,164		$ 27,200