Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

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Leases - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Lessee, Lease, Description [Line Items]          
Right-of-use assets $ 38,000   $ 38,000   $ 42,400
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 $ 42,334   $ 42,334   $ 46,400
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent   us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent   us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Weighted average remaining lease term 6 years 6 months 29 days   6 years 6 months 29 days   6 years 9 months 25 days
Weighted average discount rate (percent) 3.21%   3.21%   2.98%
Net lease expense $ 2,500 $ 2,200 $ 4,700 $ 4,200  
Operating lease costs 2,400 2,100 4,600 4,200  
Cash paid for amounts included in the measurement of Company's operating lease liabilities $ 2,000 $ 2,100 $ 4,200 $ 4,100