EQUITY COMPENSATION (Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2020	Jun. 30, 2019	Dec. 31, 2019
Options
Exercised (in units)	(1,058,722)
Options
Options
Balance at the beginning of the period (in units)	13,426,870
Granted (in units)	0
Exercised (in units)	(1,134,677)
Expired (in units)	0
Forfeited (in units)	0
Balance at the end of the period (in units)	12,292,193
Exercisable at the end of the period (in units)	12,292,193
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per unit)	$ 18.99
Granted (in dollars per unit)	0
Exercised (in dollars per unit)	19.00
Expired (in dollars per unit)	0
Forfeited (in dollars per unit)	0
Balance at the end of the period (in dollars per unit)	18.99
Exercisable at the end of the period (in dollars per unit)	$ 18.99
Weighted Average Remaining Life
Weighted average remaining life		4 years 4 months 2 days
Expected to vest at the end of the period	4 years
Exercisable at the end of the period	4 years
Aggregate Intrinsic Value
Beginning balance	$ 146,811		$ 224,260
Ending balance	146,811		$ 224,260
Exercisable	146,811
Stock option exercises	21,600
Tax benefits of exercises	$ 2,900