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Leases - Components of lease costs and supplemental information related to leases (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Lease Assets and Liabilities      
Operating Lease, Right-of-Use Asset $ 22,932   $ 22,696
Total lease liabilities $ 24,629   $ 24,458
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other liabilities   Other liabilities
Lease Cost      
Operating lease expense [1] $ 1,841 $ 1,846  
Sublease income 0 0  
Total lease expense 1,841 1,846  
Other Information      
Operating cash outflows from operating leases, net $ 1,756 $ 1,851  
Lease Term and Discount Rate      
Weighted average remaining lease term (years) 4 years 1 month 17 days   4 years 1 month 13 days
Weighted average discount rate 3.00%   2.80%
[1] Includes short-term leases and variable lease costs, which are immaterial.