Quarterly report pursuant to Section 13 or 15(d)

Segment and Geographic Information - Company's Top Five Manufacturers Produced (Detail)

v3.21.2
Segment and Geographic Information - Company's Top Five Manufacturers Produced (Detail) - Cost of Goods, Total [Member] - Supplier Concentration Risk [Member]
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Manufacturer One [Member]        
Segment Reporting Information [Line Items]        
Percentage of Total Production 16.30% 16.40% 17.30% 20.60%
Manufacturer Two [Member]        
Segment Reporting Information [Line Items]        
Percentage of Total Production 6.30% 6.70% 5.80% 6.90%
Manufacturer Three [Member]        
Segment Reporting Information [Line Items]        
Percentage of Total Production 5.30% 6.00% 4.80% 5.80%
Manufacturer Four [Member]        
Segment Reporting Information [Line Items]        
Percentage of Total Production 4.80% 5.70% 4.80% 4.50%
Manufacturer Five [Member]        
Segment Reporting Information [Line Items]        
Percentage of Total Production 4.70% 4.80% 4.50% 4.40%
Top Five Manufacturers [Member]        
Segment Reporting Information [Line Items]        
Percentage of Total Production 37.40% 39.60% 37.20% 42.20%