DEBT AND FINANCING ARRANGEMENTS - 2024 Convertible Senior Notes (Narrative) (Details) - Convertible Debt $ / shares in Units, $ in Millions	Apr. 01, 2024 USD ($) numberOfDays day $ / shares	Sep. 22, 2020 USD ($)
2024 Convertible Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 172.5
Stated percentage	4.25%
Debt instrument, face amount, additional principal available	$ 22.5
Conversion price (in dollars per share) \| $ / shares	$ 18.02
Proceeds from issuance of 2024 Convertible Senior Notes	$ 166.8
Conversion ratio	0.0554939
2024 Convertible Senior Notes \| Debt Conversion Terms One
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	130.00%
Threshold trading days \| numberOfDays	20
Threshold consecutive trading days \| numberOfDays	30
2024 Convertible Senior Notes \| Debt Conversion Terms Two
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	98.00%
Threshold consecutive trading days \| day	10,000
Debt instrument, consecutive business days after threshold trading days	5 days
2020 Convertible Senior Notes, net
Debt Instrument [Line Items]
Debt instrument, face amount		$ 230.0
Stated percentage		1.00%

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