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Gross amount of debt extinguished.

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LONG-TERM DEBT - Narrative (Details)		3 Months Ended	12 Months Ended
LONG-TERM DEBT - Narrative (Details)	Feb. 28, 2023 EUR (€) loan	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2021 loan	Mar. 30, 2023 USD ($)	Mar. 30, 2023 EUR (€)	Oct. 25, 2021 USD ($)	Sep. 02, 2021 USD ($)	Sep. 02, 2021 EUR (€)
Debt Instrument [Line Items]
Number of loans \| loan				2
Number of loans extinguished \| loan	1
Extinguished debt amount \| €	€ 20,000,000
Unamortized deferred issuance costs		$ 16,480,000	$ 17,502,000
Amortization of debt issuance costs		900,000	2,200,000
Carrying value		884,682,000	871,670,000
Letters of credit outstanding		$ 0
Term Loan \| Secured Debt
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity \| €						€ 250,000,000
Term loan, due Feb 2024 \| Secured Debt
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity \| €						220,000,000
4.750% Senior Notes, due Oct 2029
Debt Instrument [Line Items]
Original principal							$ 500,000,000
Interest rate on debt (as a percent)		4.75%					4.75%
Carrying value		$ 500,000,000	500,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 250,000,000			$ 400,000,000
Debt instrument covenant compliance leverage ratio, actual		3.7
Term Loan Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity \| €						€ 220,000,000			€ 220,000,000
Letters of Credit
Debt Instrument [Line Items]
Carrying value		$ 4,100,000	$ 5,700,000