Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Apr. 01, 2022	Dec. 31, 2021	Apr. 01, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 712,002		$ 545,385		$ 543,918
Level One
Business Acquisition [Line Items]
Cash and due from banks		$ 217,104
Investment securities available for sale		370,071
Investment securities held to maturity		587
Loans held for sale		7,951
Loans		1,627,423		$ 1,600,000
Allowance for credit losses - loans		(16,599)
Premises and equipment		11,848
Federal Home Loan Bank stock		11,688
Interest receivable		7,188
Cash surrender value of life insurance		30,143
Cash surrender value of life insurance		16,223
Other assets		41,690
Deposits		(1,930,790)
Securities sold under repurchase agreements		(1,521)
Federal Home Loan Bank advances		(160,043)
Subordinated debentures		(32,631)
Interest payable		(1,065)
Other liabilities		(42,813)
Net tangible assets acquired		156,454
Customer relationship intangible		18,642
Goodwill		166,617
Purchase price		$ 341,713
Hoosier
Business Acquisition [Line Items]
Cash and due from banks				292
Other assets				35
Other liabilities				(816)
Net tangible assets acquired				(489)
Customer relationship intangible				2,247
Goodwill				1,467
Purchase price				$ 3,225