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Schedule of Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
ASSETS    
Lease right of use assets $ 11,739 $ 16,051
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Lease right of use assets  
Liabilities:    
Lease liabilities $ 15,701 [1] $ 19,079
Operating Lease, Liability, Statement of Financial Position [Extensible List] Lease liabilities  
Weighted-average remaining lease term    
Operating leases 6 years 7 months 6 days 7 years 8 months 12 days
Weighted-average discount rate    
Operating leases [2] 0.90% 0.90%
[1] Includes future minimum lease payments of $4.6 million on leases that have been impaired because the property is no longer in use.
[2] Represents the Company’s incremental borrowing rate at the time the leases were contracted.