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Disaggregation of Revenues and Concentration Risk - Schedule of Percentage of Consolidated Revenues Attributable to Geographical Locations (Details)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Concentration risk, percentage 100.00% 100.00%
United States [Member]    
Concentration risk, percentage 57.00% 95.00%
Outside United States [Member]    
Concentration risk, percentage 43.00% 5.00%