DEBT AND FINANCING ARRANGEMENTS - Interest Expense Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
2024 Convertible Senior Notes, net
Debt Instrument [Line Items]
Contractual interest expense (due in cash)	$ 1,833		$ 3,645
Amortization of debt issuance costs	281		558
Total interest expense related to the 2020 Convertible Senior Notes	$ 2,114		$ 4,203
Effective interest rate	4.90%		4.90%
2020 Convertible Senior Notes, net
Debt Instrument [Line Items]
Contractual interest expense (due in cash)	$ 115	$ 575	$ 805	$ 1,725
Amortization of debt issuance costs	73	365	511	1,096
Total interest expense related to the 2020 Convertible Senior Notes	$ 188	$ 940	$ 1,316	$ 2,821
Effective interest rate	1.64%	1.64%	1.64%	1.64%