XML 79 R64.htm IDEA: XBRL DOCUMENT v3.20.4
Commitments and Contingencies -Additional Information (Detail) - USD ($)
Jul. 30, 2020
Apr. 29, 2020
Dec. 31, 2020
Feb. 26, 2019
Operating Leased Assets [Line Items]        
Nonprobable Sales Tax Due     $ 1,500,000  
Maximum [Member]        
Operating Leased Assets [Line Items]        
Damages sought per each violation $ 1,500 $ 1,500    
Minimum [Member]        
Operating Leased Assets [Line Items]        
Damages sought per each violation $ 500 $ 500    
Settlement Agreement [Member] | Prepaid Expenses and Other Current Assets [Member]        
Operating Leased Assets [Line Items]        
Other receivables       $ 3,600,000
Settlement Agreement [Member] | Accrued Liabilities And Other Liabilities [Member]        
Operating Leased Assets [Line Items]        
Accrued Liabilities       $ 4,800,000