INCOME TAXES - narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
INCOME TAXES
Effective income tax rate (as a percent)	1.30%
Net deferred tax liabilities	$ 25.8	$ 40.2

Amount of deferred tax liability attributable to taxable temporary differences.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant