Loans and Leases, Components of Loans and Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Loan & Lease Portfolio [Abstract]
Gross loans and leases	$ 3,665,397	$ 3,521,718
Unearned income	(10,708)	(9,357)
Total net loans and leases	3,654,689	3,512,361
Allowance for credit losses	(74,965)	(66,885)	$ (61,007)
Loans held-for-investment, net	3,579,724	3,445,476
Maximum borrowing capacity	2,300,000	1,500,000
Federal Home Loan Bank [Member]
Loan & Lease Portfolio [Abstract]
Maximum borrowing capacity	758,300
Federal Home Loan Bank [Member] \| Asset Pledged as Collateral [Member]
Loan & Lease Portfolio [Abstract]
Loans held-for-investment, net	1,300,000
Federal Reserve Bank [Member]
Loan & Lease Portfolio [Abstract]
Maximum borrowing capacity	1,100,000
Federal Reserve Bank [Member] \| Asset Pledged as Collateral [Member]
Loan & Lease Portfolio [Abstract]
Loans held-for-investment, net	1,500,000
Real Estate [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	2,677,391	2,609,920
Total net loans and leases	2,669,281	2,601,543
Allowance for credit losses	(46,039)	(43,085)
Commercial [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	1,323,038	1,328,691
Total net loans and leases	1,314,928	1,320,314
Allowance for credit losses	(26,093)	(18,055)
Agricultural [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	742,009	726,938
Total net loans and leases	742,009	726,938
Allowance for credit losses	(7,744)	(14,496)
Residential and Home Equity [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	399,982	387,753
Total net loans and leases	399,982	387,753
Allowance for credit losses	(7,770)	(7,508)	(2,847)
Construction [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	212,362	166,538
Total net loans and leases	212,362	166,538
Allowance for credit losses	(4,432)	(3,026)	(1,456)
Commercial and Industrial [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	499,373	478,758
Total net loans and leases	499,373	478,758
Allowance for credit losses	(13,380)	(11,503)
Agricultural [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	313,737	314,525
Total net loans and leases	313,737	314,525
Allowance for credit losses	(8,872)	(10,202)
Commercial Leases [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	169,684	112,629
Total net loans and leases	167,086	111,649
Allowance for credit losses	(6,537)	(1,924)	(938)
Consumer and Other [Member]
Loan & Lease Portfolio [Abstract]
Gross loans and leases	5,212	5,886
Total net loans and leases	5,212	5,886
Allowance for credit losses	$ (137)	$ (171)	$ (663)

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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