Loan and Lease Receivables - Summary of Balances for Each Respective Loan and Lease Category (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 4,454,620	$ 4,340,535	$ 3,860,259
Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,849,489	3,668,460
Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	181,367	201,817
Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	423,764	470,258
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,431,668	1,421,670	1,294,959
Commercial Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,064,151	1,017,587
Commercial Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	96,059	108,484
Commercial Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	271,458	295,599
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	545,279	572,271	693,997
Residential Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	399,958	414,220
Residential Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	74,283	78,840
Residential Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	71,038	79,211
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	240,324	230,733	277,776
Construction, Land Development, and Other Land | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	238,122	226,408
Construction, Land Development, and Other Land | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,992	4,113
Construction, Land Development, and Other Land | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	210	212
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,364,396	1,368,900	1,414,559
Commercial and Industrial | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,285,759	1,276,527
Commercial and Industrial | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	8,842	10,178
Commercial and Industrial | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	69,795	82,195
Paycheck Protection Program
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	617,006	517,815
Paycheck Protection Program | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	617,006	517,815
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,616	2,005	5,721
Installment and Other | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,094	1,267
Installment and Other | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	191	202
Installment and Other | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	331	536
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	254,331	227,141	$ 173,247
Lease Financing Receivables | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	243,399	214,636
Lease Financing Receivables | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 10,932	$ 12,505