Loans - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	$ 37,588,000	$ 34,340,000	$ 19,473,000
Loans	3,634,792,000	3,371,789,000
Amortized cost in troubled debt restructurings	16,600,000	15,100,000
Financing receivable, troubled debt restructuring, allowance for loans	$ 2,600,000	$ 779,000
Loans modified as TDRs with a subsequent payment default | loan	0	0	0
Principal balances forgiven in connection with loan restructuring	$ 0	$ 0	$ 0
Minimum period to be considered for loan to have defaulted	90 days
Accrual status restoration period	6 months
PPP
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 45,203,000	155,529,000
Syndicated
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	125,761,000	22,064,000
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	8,837,000	6,233,000	$ 4,105,000
Loans	708,989,000	663,550,000
Commercial and Industrial | PPP
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit loss	0	0
Loans	45,200,000	155,500,000
Commercial and Industrial | Syndicated
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 125,800,000	$ 22,100,000