Allowance for Credit Losses - Additional Information (Details) - USD ($)		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease		$ 26,900,000	$ 11,300,000	$ 34,400,000
Risk ratings for loans		1,000,000.0
Individually evaluated for impairment Increases		92,225,000	72,923,000	95,355,000
Net recoveries on PCD loans		4,065,000	2,872,000	1,809,000
Commitments outstanding on troubled debt restructurings		0	0	0
Interest income on non-accrual loans and leases		273,412,000	222,993,000	208,788,000
Recorded investment in troubled debt restructurings that subsequently defaulted within twelve months		0	0	36,000
Reserve for unfunded commitments		4,203,000	1,403,000	1,887,000	$ 1,159,000
Impact of CECL Adoption [Member]
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease	$ 12,200,000
Reserve for unfunded commitments		1,595,000
Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment Increases		37,959,000	35,051,000	46,169,000
Net recoveries on PCD loans		1,361,000	769,000	267,000
Non-accrual loans without allowance		10,800,000
Commercial and Industrial
Loans And Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment Increases		47,846,000	36,070,000	47,356,000
Net recoveries on PCD loans		882,000	1,180,000	490,000
Non-accrual loans without allowance		4,300,000
Residential Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Individually evaluated for impairment Increases		879,000	1,802,000	1,830,000
Net recoveries on PCD loans		766,000	15,000	136,000
Non-accrual loans without allowance		2,600,000
Acquired Impaired Loans
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease			3,300,000	3,700,000
Individually Evaluated For Impairment
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease		6,900,000	2,900,000	13,300,000
Individually Evaluated For Impairment | Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease			2,800,000
Individually evaluated for impairment Increases			243,700,000
Individually Evaluated For Impairment | Commercial and Industrial
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease		7,500,000
Individually evaluated for impairment Increases		474,400,000
Collectively Evaluated For Impairment
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease			$ 5,100,000	$ 17,500,000
PCD loans
Loans And Leases Receivable Disclosure [Line Items]
Allowance for credit losses period increase decrease		1,600,000
Allowance for loan and lease loss decrease in loans outstanding		47,000,000.0
Net recoveries on PCD loans		341,000,000
Non Accrual Loans
Loans And Leases Receivable Disclosure [Line Items]
Interest income on non-accrual loans and leases		$ 2,500,000