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CONVERTIBLE SENIOR NOTES AND TERM LOAN - Delayed Draw Term Loan (Details) $ in Thousands				3 Months Ended			6 Months Ended		12 Months Ended
	Aug. 05, 2024 USD ($)	Jul. 11, 2024 USD ($)	Aug. 03, 2022	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) payment	Sep. 30, 2024 USD ($)	Mar. 31, 2025 USD ($) payment	Sep. 30, 2026 USD ($)	Aug. 10, 2022 USD ($)
Debt Instrument [Line Items]
Debt instrument, face value				$ 328,914			$ 328,914		$ 353,914
Cash and cash equivalents				75,872		$ 117,400	75,872	$ 117,400	88,050
Loss on debt extinguishment				46		$ 11,996	127	$ 11,996
Unamortized debt discount and issuance costs				3,125			3,125		3,950
Long-term debt				325,789			$ 325,789		$ 349,964
Debt Instrument, Number Of Principal Payments | payment							2		3
Aggregate Principal Amount					$ 25,000				$ 48,000
Delayed Draw Term Loan Facility | Line of credit
Debt Instrument [Line Items]
Cash and cash equivalents	$ 29,000
2024 Term Loan | Loans payable
Debt Instrument [Line Items]
Debt instrument, face value	225,000			127,000			$ 127,000		152,000
Unamortized debt discount and issuance costs				528			528		826
Long-term debt				$ 126,472			$ 126,472		151,174
Term Loan
Debt Instrument [Line Items]
Loss on debt extinguishment	$ 12,000
Term Loan | Loans payable
Debt Instrument [Line Items]
Debt instrument, face value									$ 250,000
Debt instrument, basis spread on variable rate			6.50%
Debt instrument, effective interest rate				11.90%			11.90%
Loss on debt extinguishment				$ 500
Unamortized debt discount and issuance costs											$ 20,000
Debt discount and issuance costs paid in common stock											$ 2,800
Secured debt | Delayed Draw Term Loan Facility | Line of credit
Debt Instrument [Line Items]
Debt instrument, face value		$ 200,000
Debt instrument, basis spread on variable rate				3.00%
Periodic interest expense				$ 2,500
Repayments of principal year 2025				37,500			$ 37,500
Repayments of principal year 2026		7,000		$ 3,000			$ 3,000
Repayments of principal year 2027		44,500
Repayments of principal is due before or upon 2028		$ 82,500
Debt instrument, effective interest rate				8.65%			8.65%
Long-term debt				$ 127,000			$ 127,000
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Forecast
Debt Instrument [Line Items]
Debt, additional quarterly payment										$ 12,500
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Margin one
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.50%
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Margin two
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.75%
Secured debt | Delayed Draw Term Loan Facility | Line of credit | Margin three
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		3.00%

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