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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - REMAINING PERFORMANCE OBLIGATION (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
$ in Millions
Mar. 31, 2020
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, Remaining Performance Obligation, Amount $ 1.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 1 year