Quarterly report [Sections 13 or 15(d)]

Leases - Additional Information (Detail)

v3.26.3
Leases - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Lessee, Lease, Description [Line Items]          
Right-of-use assets $ 30,800   $ 30,800   $ 32,000
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 $ 34,839   $ 34,839   $ 36,000
Operating Lease, Liability, Statement of Financial Position [Extensible List] us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent   us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent   us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Weighted average remaining lease term 4 years 11 months 1 day   4 years 11 months 1 day   5 years 7 months 2 days
Weighted average discount rate (percent) 3.88%   3.88%   3.85%
Net lease expense $ 2,400 $ 2,400 $ 7,100 $ 7,100  
Cash paid for amounts included in the measurement of Company's operating lease liabilities $ 2,100 $ 2,100 $ 6,300 $ 6,500  
Maximum          
Lessee, Lease, Description [Line Items]          
Finance lease extension term 10 years   10 years