Quarterly report [Sections 13 or 15(d)]

Leases - Additional Information (Detail)

v3.25.3
Leases - Additional Information (Detail) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Lessee, Lease, Description [Line Items]          
Right-of-use assets $ 32,700,000   $ 32,700,000   $ 35,600,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Prepaid expenses and other assets   Prepaid expenses and other assets   Prepaid expenses and other assets
Total lease liabilities - Operating leases $ 36,816,000   $ 36,816,000   $ 39,800,000
Operating Lease, Liability, Statement of Financial Position [Extensible List] Accrued expenses and other liabilities   Accrued expenses and other liabilities   Accrued expenses and other liabilities
Weighted average remaining lease term 5 years 9 months 14 days   5 years 9 months 14 days   6 years 4 months 6 days
Weighted average discount rate (percent) 3.86%   3.86%   3.30%
Net lease expense $ 2,300,000 $ 2,400,000 $ 7,100,000 $ 7,700,000  
Operating lease costs 2,400,000 2,500,000 7,200,000 7,800,000  
Cash paid for amounts included in the measurement of Company's operating lease liabilities 2,100,000 2,200,000 6,500,000 6,400,000  
Sublease income $ 34,000 $ 33,000 $ 100,000 $ 100,000