COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Mar. 31, 2020 lawsuit	Jan. 28, 2019 lawsuit	Nov. 08, 2018 lawsuit
Current and Former Officers and Directors
Loss Contingencies [Line Items]
Payments for settlement | $	$ 9.5
IPO Lawsuits
Loss Contingencies [Line Items]
Number of class actions			2	2
Merger Lawsuits
Loss Contingencies [Line Items]
Number of class actions		7
Merger Lawsuits, Breach of Fiduciary Duties Of BOD
Loss Contingencies [Line Items]
Number of class actions		1