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Revenues by Geographic Region (Detail) - Geographic Concentration Risk - Consolidated Revenue
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Segment Reporting Information        
Revenues by geographic region 100.00% 100.00% 100.00% 100.00%
United States        
Segment Reporting Information        
Revenues by geographic region 98.00% 98.00% 98.00% 98.00%
Canada        
Segment Reporting Information        
Revenues by geographic region 2.00% 2.00% 2.00% 2.00%
Other Countries        
Segment Reporting Information        
Revenues by geographic region [1] 0.00% 0.00% 0.00% 0.00%
[1] Less than 1% of revenue