COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 11, 2017	Jul. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Other Commitments [Line Items]
Operating leases, rent expense			$ 2.1	$ 2.0	$ 4.2	$ 3.9
Contractual obligation			1.3		1.3		$ 6.5
Loss contingency accrual			$ 9.2		$ 9.2		$ 7.5
Insurance Claims
Other Commitments [Line Items]
Loss contingency, damages sought, value	$ 6.0
Loss contingency, insurance coverage	6.0
Loss contingency accrual	1.2
Loss contingency, receivable	$ 1.2
Subsequent Event | Insurance Claims
Other Commitments [Line Items]
Litigation settlement, amount awarded to other party		$ 1.2
Minimum
Other Commitments [Line Items]
Lease terms			2 years		2 years
Maximum
Other Commitments [Line Items]
Lease terms			7 years		7 years