INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
INCOME TAXES
Effective tax rate (as a percent)	6.50%	31.80%
Interest on unrecognized tax position	$ 0.5	$ 0.5
Change in valuation allowance		0.4
Benefit (net) related to remeasurement of existing losses		$ 0.3