Loan and Lease Receivables and Allowance for Credit Losses - Additional Information 1 (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses period increase decrease	$ 2,600,000	$ 2,200,000	$ 2,000,000	$ 10,700,000
Risk ratings for loans			1,000,000
Financing receivable excluding accrued interest modified subsequent default			$ 2,800,000		$ 406,000,000
Percentage of outstanding commercial and industrial loans	0.14%		0.14%		0.02%
Assessment of modified loans.					$ 500,000,000
Individually evaluated for impairment	$ 75,753,000	69,235,000	$ 75,753,000	69,235,000
Adjustment for acquired PCD loans	2,600,000	2,200,000	2,000,000	10,700,000
Interest income on non-accrual loans and leases	126,523,000	99,134,000	250,315,000	191,477,000
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	36,755,000	30,750,000	36,755,000	30,750,000
Non-accrual loans without allowance	10,100,000		10,100,000		1,600,000
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	35,210,000	38,485,000	35,210,000	38,485,000
Non-accrual loans without allowance	4,300,000		4,300,000		2,300,000
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,788,000	0	3,788,000	0
Non-accrual loans without allowance	790,000		$ 790,000		$ 3,600,000
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, weighted average rate of interest			8.85%
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, weighted average rate of interest			7.01%
Individually Evaluated For Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses period increase decrease	1,900,000	3,900,000	$ 3,700,000	10,600,000
Adjustment for acquired PCD loans	1,900,000	3,900,000	3,700,000	10,600,000
Collectively Evaluated For Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses period increase decrease	4,500,000	1,700,000	1,700,000	124,000,000
Adjustment for acquired PCD loans	4,500,000	1,700,000	1,700,000	124,000,000
Non Accrual Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income on non-accrual loans and leases	$ 1,100,000	$ 1,000,000	$ 1,300,000	$ 2,000,000