Allowance for Loan and Lease Losses - Schedule of Detail in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 51,669	$ 39,892
Charge-offs	(207)	(1,430)
Recoveries	387	182
Provision (credit) for credit loss expense	(2,510)	16,294
Ending balance	49,339	52,404
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,239	10,541
Charge-offs	(116)	(1)
Recoveries	97	16
Provision (credit) for credit loss expense	(1,470)	3,117
Ending balance	7,750	11,665
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	30,546	21,608
Charge-offs	0	(1,290)
Recoveries	213	18
Provision (credit) for credit loss expense	(292)	8,027
Ending balance	30,467	22,446
Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,257	6,381
Charge-offs	0	(2)
Recoveries	34	79
Provision (credit) for credit loss expense	(821)	5,413
Ending balance	9,470	16,330
Consumer and other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,562	1,362
Charge-offs	(91)	(137)
Recoveries	43	69
Provision (credit) for credit loss expense	69	(261)
Ending balance	1,583	1,883
Finance Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	65	0
Charge-offs	0	0
Recoveries	0	0
Provision (credit) for credit loss expense	4	(2)
Ending balance	$ 69	80
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		(2,534)
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		(2,008)
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		(5,917)
Cumulative Effect, Period of Adoption, Adjustment | Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		4,459
Cumulative Effect, Period of Adoption, Adjustment | Consumer and other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		850
Cumulative Effect, Period of Adoption, Adjustment | Finance Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		$ 82