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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: - Impairment, Advertising Expenses: (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Summary of significant accounting policies      
Impairment of Intangible Assets (Excluding Goodwill)     $ 0.9
Accounts Receivable      
Unbilled amounts included in accounts receivable $ 11.6 $ 14.1  
Advertising Expense      
Advertising expense $ 11.6 $ 9.3 5.9
Brazil reporting unit      
Asset impairment charges      
Goodwill impairment     0.5
APAC reporting unit      
Asset impairment charges      
Goodwill impairment     $ 5.4
Minimum      
Internally developed software      
Amortization period 2 years    
Minimum | Data processing equipment      
Property and equipment and software      
Estimated useful lives 2 years    
Minimum | Office furniture and other equipment      
Property and equipment and software      
Estimated useful lives 3 years    
Minimum | Developed technology (Software, net)      
Internally developed software      
Amortization period 2 years    
Maximum      
Internally developed software      
Amortization period 10 years    
Purchased software licenses      
Amortization period 5 years    
Maximum | Buildings and improvements      
Property and equipment and software      
Estimated useful lives 30 years    
Maximum | Data processing equipment      
Property and equipment and software      
Estimated useful lives 5 years    
Maximum | Office furniture and other equipment      
Property and equipment and software      
Estimated useful lives 7 years    
Maximum | Developed technology (Software, net)      
Internally developed software      
Amortization period 5 years