Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

v3.21.2
Leases - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Sublease income $ 200   $ 300  
Impairment loss 127 $ 4,100 1,823 $ 203,464
Sublease [Member]        
Impairment loss 100 0 1,800 0
Selling, General and Administrative Expenses, and Depreciation and Amortization Expenses [Member]        
Operating lease expense $ 2,100 $ 2,300 $ 6,500 $ 6,400
Minimum [Member]        
Sublease lease term     1 year  
Maximum [Member]        
Sublease lease term     15 years