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EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	12 Months Ended
EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Employer matching contribution percent	100.00%
Employer matching contribution percent of employees' gross pay	4.00%
Defined contribution plan expense	$ 6.4	$ 6.3	$ 6.6
Company contributions	$ 6.6	$ 6.3	$ 14.4