Loans and Leases - Schedule of Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 5,306,446	$ 5,267,910
Less: unearned income and deferred costs and fees	(13,653)	(7,583)
Total loans and leases, net of unearned income and deferred costs and fees	5,292,793	5,260,327
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,213,655	1,178,728
Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	80,692	94,489
Total loans and leases, net of unearned income and deferred costs and fees	80,692	94,489
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	762,956	792,987
Total loans and leases, net of unearned income and deferred costs and fees	762,956	792,987
Commercial and industrial | PPP loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	370,007	291,252
Total loans and leases, net of unearned income and deferred costs and fees	370,007	291,252
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	2,579,839	2,569,192
Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	200,211	201,866
Total loans and leases, net of unearned income and deferred costs and fees	200,211	201,866
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	2,202,898	2,204,310
Total loans and leases, net of unearned income and deferred costs and fees	2,202,898	2,204,310
Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	176,730	163,016
Total loans and leases, net of unearned income and deferred costs and fees	176,730	163,016
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,426,480	1,435,987
Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	192,902	200,827
Total loans and leases, net of unearned income and deferred costs and fees	192,902	200,827
Residential real estate | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,233,578	1,235,160
Total loans and leases, net of unearned income and deferred costs and fees	1,233,578	1,235,160
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	71,416	69,800
Consumer and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	63,969	61,399
Consumer and other | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	7,447	8,401
Total loans and leases, net of unearned income and deferred costs and fees	7,447	8,401
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 15,056	$ 14,203