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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Cash and Cash Equivalents, Concentrations of Risk, Financial Instruments, Financing Receivables and Operating Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
CASH AND CASH EQUIVALENTS [Abstract]      
Amounts held in trust for third party recipients $ 0 $ 0  
Minimum [Member]      
FINANCING RECEIVABLES AND OPERATING LEASES [Abstract]      
Financing receivables and operating leases term 2 years    
Financing receivables and operating leases, term range 3 years    
Estimated useful life 3 years    
Maximum [Member]      
FINANCING RECEIVABLES AND OPERATING LEASES [Abstract]      
Financing receivables and operating leases term 6 years    
Financing receivables and operating leases, term range 4 years    
Estimated useful life 7 years    
Information Technology Equipment [Member]      
FINANCING RECEIVABLES AND OPERATING LEASES [Abstract]      
Estimated useful life 4 years    
Carrying Amount [Member]      
FINANCIAL INSTRUMENTS [Abstract]      
Notes receivable, fair value disclosure $ 54,800 40,400  
Recourse payable, fair value disclosure 37,300    
Non-recourse payable, fair value disclosure 35,500 48,600  
Fair Value [Member]      
FINANCIAL INSTRUMENTS [Abstract]      
Notes receivable, fair value disclosure 55,400 40,500  
Recourse payable, fair value disclosure 37,300    
Non-recourse payable, fair value disclosure $ 35,500 $ 48,700  
Net Sales [Member] | Technology Segment [Member]      
CONCENTRATIONS OF RISK [Abstract]      
Percentage of concentration risk 15.00%   12.00%
Net Sales [Member] | Cisco Systems [Member] | Technology Segment [Member]      
CONCENTRATIONS OF RISK [Abstract]      
Percentage of concentration risk 40.00% 42.00% 42.00%