Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.20.4
Commitments and Contingencies - Additional Information (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
lease
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Other Commitments [Line Items]      
Number of leases | lease 4    
Expenses incurred for the properties listed $ 117,248 $ 110,273  
Weighted average lease term 20 years 1 month 6 days    
Weighted average discount rate 5.32%    
Line of credit      
Other Commitments [Line Items]      
Letters of credit, outstanding $ 16,400    
Operating Expense      
Other Commitments [Line Items]      
Expenses incurred for the properties listed $ 500 $ 500  
Expenses incurred for the properties listed     $ 500