ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES. (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reduction in certain accrued expense and accounts payable	$ 0.0	$ 0.1
Accrued expenses
Gain (Loss) On Writeoff Of Accounts Payable	0.4
Accrued Liabilities
Gain (Loss) On Writeoff Of Accounts Payable	1.7
Accounts Payable
Gain (Loss) On Writeoff Of Accounts Payable	$ 1.3