EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Employer matching contribution percent	100.00%
Employer matching contribution percent of employees' gross pay	4.00%
Defined contribution plan expense	$ 9.7	$ 6.4	$ 6.3
Company contributions	$ 8.9	$ 6.6	$ 6.3