Loan and Lease Receivables - Summary of Balances for Each Respective Loan and Lease Category (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 3,860,259	$ 3,785,661	$ 3,567,566
Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	2,984,646	2,835,652
Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	243,428	258,668
Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	632,185	691,341
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,294,959	1,276,542	1,262,283
Commercial Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	839,244	792,263
Commercial Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	127,895	135,914
Commercial Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	327,820	348,365
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	693,997	711,822	699,036
Residential Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	480,946	483,072
Residential Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	94,198	100,223
Residential Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	118,853	128,527
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	277,776	278,657	213,659
Construction, Land Development, and Other Land | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	242,001	235,794
Construction, Land Development, and Other Land | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	5,291	5,373
Construction, Land Development, and Other Land | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	30,484	37,490
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,414,559	1,331,565	1,189,818
Commercial and Industrial | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,263,688	1,160,996
Commercial and Industrial | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	15,808	16,909
Commercial and Industrial | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	135,063	153,660
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	5,721	6,565	12,802
Installment and Other | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	4,594	5,372
Installment and Other | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	236	249
Installment and Other | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	891	944
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	173,247	180,510	$ 189,968
Lease Financing Receivables | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	154,173	158,155
Lease Financing Receivables | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 19,074	$ 22,355