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FINANCING ARRANGEMENTS - 1.125% Convertible Senior Notes due 2026 (Details) $ / shares in Units, $ in Thousands	1 Months Ended
	Apr. 30, 2021 USD ($) $ / shares	Apr. 30, 2016	Sep. 30, 2021 USD ($) $ / shares	Jun. 30, 2021 $ / shares
Debt Instrument [Line Items]
Conversion price (in usd per share) | $ / shares	$ 68.12
Share price (in usd per share) | $ / shares			$ 22.81
Convertible senior notes due 2026 | Senior Notes
Debt Instrument [Line Items]
Stated interest rate	1.125%
Principal amount	$ 230,000		$ 230,000
Net proceeds from issuance of debt	222,100
Proceeds from debt used for capped call transactions payment	$ 27,400
Debt conversion ratio		0.0146800
Conversion price (in usd per share) | $ / shares				$ 68.12
Debt issuance costs			$ 7,800
Effective interest rate			1.83%
Fair value of debt			$ 178,900
Debt conversion price, premium on stock price	100.00%
Convertible senior notes due 2026 | Senior Notes | Maximum
Debt Instrument [Line Items]
Conversion price (in usd per share) | $ / shares	$ 104.80

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