Loans and Allowance for Credit Losses - Schedule of the Company's Loan participations (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance	$ 2,332,393	$ 2,136,457
Non-performing Loan Rate (%)	0.82%	1.71%
Gross Charge-offs	$ 5,297	$ 10,290
Commercial and industrial | Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance	$ 1,225,267	$ 1,031,237
Non-performing Loan Rate (%)	0.00%	0.00%
Gross Charge-offs	$ 0	$ 0
Commercial real estate | Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance	$ 996,960	$ 944,371
Non-performing Loan Rate (%)	1.93%	3.87%
Gross Charge-offs	$ 5,282	$ 10,290
Commercial construction | Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance	$ 109,110	$ 159,237
Non-performing Loan Rate (%)	0.00%	0.00%
Gross Charge-offs	$ 0	$ 0
Business banking | Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance	$ 1,056	$ 1,612
Non-performing Loan Rate (%)	0.00%	0.00%
Gross Charge-offs	$ 15	$ 0