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Leases - Additional Information (Detail)
$ in Millions
Jun. 30, 2021
USD ($)
ft²
Lessee, Lease, Description [Line Items]  
Current portion of operating lease liabilities $ 24.0
Canonsburg Office, New Company Headquarters  
Lessee, Lease, Description [Line Items]  
Area of real estate property | ft² 186,000
Period of leased property 183 months
Base rent through 2024 $ 4.5
Base rent 2025-2029 $ 4.7