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CONVERTIBLE SENIOR NOTES - Narrative (Details) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 07, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares	Feb. 16, 2021 USD ($) $ / shares	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ 0	$ 0	$ 0	$ 2,033
2028 Convertible Senior Notes
Debt Instrument [Line Items]
Debt issuance costs		$ 1,500
Aggregate outstanding balance				457,870		457,870		$ 457,626
Principal amount				459,000		459,000		459,000
2028 Convertible Senior Notes | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, stated interest rate			1.50%
Principal amount of notes		441,000	$ 900,000
Debt instrument, convertible, conversion ratio			0.0229885
Conversion price per share (in dollars per share) | $ / shares			$ 43.50
Debt redemption, percentage of conversion price			150.00%
Debt redemption, trading days			20 days
Debt redemption, consecutive trading days			30 days
Redemption price, percentage			100.00%
Debt instrument, debt default, calendar days			360 days
Debt instrument, interest in the event of default			0.25%
Additional interest in the event of default			0.50%
Debt issuance costs			$ 4,500
Debt instrument, effective interest rate			1.60%
Aggregate outstanding balance		459,000
Fair value of convertible debt				399,100		399,100
Principal amount		459,000
2028 Convertible Senior Notes | Convertible Debt | Subsequent Event
Debt Instrument [Line Items]
Principal amount	$ 459,000
Beneficial conversion feature	$ 50,000
2028 Convertible Senior Notes | Convertible Debt | Minimum
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days			181 days
2028 Convertible Senior Notes | Convertible Debt | Maximum
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days			360 days
2028 Convertible Senior Notes | Debt Conversion Terms One | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days			180 days
2028 Convertible Senior Notes | Debt Conversion Terms Two | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days			361 days
2030 Convertible Senior Notes
Debt Instrument [Line Items]
Debt issuance costs		$ 7,300
Aggregate outstanding balance				435,274		435,274		434,617
Principal amount				441,000		441,000		441,000
2030 Convertible Senior Notes | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, stated interest rate		1.375%
Principal amount of notes		$ 441,000
Debt instrument, convertible, conversion ratio		0.0465116
Conversion price per share (in dollars per share) | $ / shares		$ 21.50
Debt redemption, percentage of conversion price		150.00%
Debt redemption, trading days		20 days
Debt redemption, consecutive trading days		30 days
Redemption price, percentage		100.00%
Debt instrument, debt default, calendar days		360 days
Debt instrument, interest in the event of default		0.25%
Additional interest in the event of default		0.50%
Debt instrument, effective interest rate		1.60%
Fair value of convertible debt				$ 347,100		$ 347,100
2030 Convertible Senior Notes | Convertible Debt | Minimum
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days		181 days
2030 Convertible Senior Notes | Convertible Debt | Maximum
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days		360 days
2030 Convertible Senior Notes | Debt Conversion Terms One | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days		180 days
2030 Convertible Senior Notes | Debt Conversion Terms Two | Convertible Debt
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days		361 days
Exchange Transaction
Debt Instrument [Line Items]
Loss on extinguishment of debt								$ 2,000
Exchange Transaction | Convertible Debt
Debt Instrument [Line Items]
Principal amount of notes		$ 441,000
Paid accrued but unpaid interest		$ 2,500
2029 Convertible Senior Notes | Convertible Debt | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, stated interest rate	1.50%
Principal amount of notes	$ 200,000
Debt instrument, convertible, conversion ratio	0.2045157
Conversion price per share (in dollars per share) | $ / shares	$ 4.89
Redemption price, percentage	100.00%
Debt instrument, debt default, calendar days	360 days
Debt conversion, shares issued (in shares) | shares	20,451,570
2029 Convertible Senior Notes | Debt Conversion Terms One | Convertible Debt | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days	180 days
Debt instrument, interest in the event of default	0.25%
2029 Convertible Senior Notes | Debt Conversion Terms Two | Convertible Debt | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days	361 days
Additional interest in the event of default	0.50%
2029 Convertible Senior Notes | Debt Conversion Terms Two | Convertible Debt | Minimum | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days	181 days
2029 Convertible Senior Notes | Debt Conversion Terms Two | Convertible Debt | Maximum | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, debt default, calendar days	360 days

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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