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FAIR VALUE MEASUREMENTS (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Oct. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Assets [Abstract]        
Money market funds   $ 128 $ 50  
Liabilities [Abstract]        
Contingent consideration   220 8,942  
Initial contingent consideration due to business acquisitions       $ 12,000
Adjustment to reflect increases in fair value of our existing contingent consideration liabilities   1,400 1,600 $ 1,500
Payments of contingent consideration liabilities $ 9,600 10,100 6,100  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]        
Assets [Abstract]        
Money market funds   128 50  
Liabilities [Abstract]        
Contingent consideration   0 0  
Significant Other Observable Inputs (Level 2) [Member]        
Assets [Abstract]        
Money market funds   0 0  
Liabilities [Abstract]        
Contingent consideration   0 0  
Significant Unobservable Inputs (Level 3) [Member]        
Assets [Abstract]        
Money market funds   0 0  
Liabilities [Abstract]        
Contingent consideration   $ 220 $ 8,942