SEGMENT REPORTING, ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Property and equipment, net	$ 106,409	$ 107,529
Goodwill	1,873,987	1,882,020	$ 1,611,535
Reconciliation of operating segment assets to total assets [Abstract]
Total assets	4,684,597	3,853,986
Reconciliation of operating segment liabilities to total liabilities [Abstract]
Total liabilities	1,221,786	448,393
North America [Member]
Segment Reporting Information [Line Items]
Goodwill	1,738,679	1,738,360	1,573,088
International [Member]
Segment Reporting Information [Line Items]
Goodwill	135,308	143,660	$ 38,447
Operating Segments [Member] | North America [Member]
Segment Reporting Information [Line Items]
Property and equipment, net	102,843	103,383
Goodwill	1,738,679	1,738,360
Reconciliation of operating segment assets to total assets [Abstract]
Total assets	4,462,340	3,615,258
Reconciliation of operating segment liabilities to total liabilities [Abstract]
Total liabilities	1,176,504	402,759
Operating Segments [Member] | International [Member]
Segment Reporting Information [Line Items]
Property and equipment, net	3,566	4,146
Goodwill	135,308	143,660
Reconciliation of operating segment assets to total assets [Abstract]
Total assets	222,257	238,728
Reconciliation of operating segment liabilities to total liabilities [Abstract]
Total liabilities	$ 45,282	$ 45,634