Annual report pursuant to Section 13 and 15(d)

Summary of Long Lived Asset Impairment Evaluations Performed by Assets Classification (Detail)

v3.20.4
Summary of Long Lived Asset Impairment Evaluations Performed by Assets Classification (Detail)
3 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Goodwill        
Impaired Long Lived Assets Held And Used [Line Items]        
Long lived assets imapirement, Valuation Multiple     N/A  
Goodwill | Market Approach        
Impaired Long Lived Assets Held And Used [Line Items]        
Long lived assets imapirement, Valuation Multiple 3.1 to 7 times 2.9 to 7 times   8 times
Tradename Intangible Assets        
Impaired Long Lived Assets Held And Used [Line Items]        
Long lived assets imapirement, Valuation Multiple     N/A  
Tradename Intangible Assets | Income Approach        
Impaired Long Lived Assets Held And Used [Line Items]        
Long lived assets imapirement, Valuation Multiple N/A N/A   N/A
Other long-lived assets        
Impaired Long Lived Assets Held And Used [Line Items]        
Long lived assets imapirement, Valuation Multiple     N/A  
Other long-lived assets | Market Approach        
Impaired Long Lived Assets Held And Used [Line Items]        
Long lived assets imapirement, Valuation Multiple 3.1 to 6 times 3.2 to 6 times   6 times