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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Thousands
12 Months Ended
Mar. 31, 2022
USD ($)
unit
segment
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Goodwill [Line Items]      
Number of operating segments | segment 1    
Number of reportable segments | segment 1    
Weighted average useful life 5 years    
Number of reporting units | unit 2    
Goodwill and intangible asset impairment | $ $ 0 $ 0 $ 0
Estimated service period minimum 6 months    
Estimated service period maximum 15 months    
Advertising expense | $ $ 297,299 $ 241,068 $ 285,607
Office equipment      
Goodwill [Line Items]      
Weighted average useful life 5 years    
Leasehold improvements      
Goodwill [Line Items]      
Weighted average useful life 7 years    
Buildings      
Goodwill [Line Items]      
Weighted average useful life 30 years    
Minimum | Computer equipment      
Goodwill [Line Items]      
Weighted average useful life 3 years    
Minimum | Software products      
Goodwill [Line Items]      
Weighted average useful life 12 months    
Maximum | Computer equipment      
Goodwill [Line Items]      
Weighted average useful life 5 years    
Maximum | Software products      
Goodwill [Line Items]      
Weighted average useful life 30 months    
Five largest customers | Net revenue | Customer concentration risk      
Goodwill [Line Items]      
Concentration risk rate 79.00% 78.40% 71.50%
Five largest customers | Gross accounts receivable | Credit concentration risk      
Goodwill [Line Items]      
Concentration risk rate 72.80% 77.60%  
One Customer | Net revenue | Customer concentration risk      
Goodwill [Line Items]      
Concentration risk rate 38.00% 38.90% 31.90%
Second Customer | Net revenue | Customer concentration risk      
Goodwill [Line Items]      
Concentration risk rate 22.00% 22.20% 20.00%
Customers individually accounting for more than 10% | Gross accounts receivable | Credit concentration risk      
Goodwill [Line Items]      
Concentration risk rate 63.80% 69.20%  
Additional customer two | Gross accounts receivable | Credit concentration risk      
Goodwill [Line Items]      
Concentration risk rate 43.50% 20.30%  
Additional customer three | Gross accounts receivable | Credit concentration risk      
Goodwill [Line Items]      
Concentration risk rate 50.40% 18.80%