CONSOLIDATED AND COMBINED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net (loss) income	$ (56,254)	$ (310,826)	$ 45,893
Adjustments to reconcile net (loss) income to net cash provided by (used in) operations:
Depreciation and amortization	16,038	23,939	29,661
Provision for (benefit from) credit loss reserve	3,626	(413)	(415)
Stock-based compensation	40,766	28,076	60,555
Non-cash interest expense	2,914	5,281	5,013
Loss on debt extinguishment	1,333
Deferred tax benefit (provision)	7,597	97,287	(4,419)
Goodwill impairment		213,720
Unrealized foreign currency transaction (gain) losses	(3,393)	5,730	(1,651)
Other	(3,388)	385	1,045
Changes in operating assets and liabilities:
Accounts receivable	(16,964)	(6,590)	5,751
Prepaid expenses and other assets	28,192	(33,756)	(30,661)
Deferred costs	3,194	4,654	6,984
Accounts payable	5,774	157	3,411
Accrued expenses and other liabilities	(408)	(1,479)	(1,125)
Deferred revenue	(21,529)	(28,303)	(45,653)
Net cash provided by (used in) operating activities	7,498	(2,138)	74,389
Cash flows from investing activities:
Capital expenditures	(5,124)	(17,446)	(12,047)
Purchases of marketable securities	(18,025)	(31,757)	(42,471)
Sale and maturities of marketable securities	30,324	37,203	16,350
Purchase of debt securities			(2,000)
Payments for equity securities		(584)	(2,563)
Other investing activities	(1,355)	2,019	1,100
Net cash provided by (used in) investing activities	5,820	(10,565)	(41,631)
Cash flows from financing activities:
Proceeds from revolving credit facility	24,700
Payments of revolver credit facility	(24,700)
Proceeds from long-term debt, net of discount	210,000
Payments for long-term debt issuance costs	(17,176)		(520)
Principal payments of long-term debt	(198,438)	(6,250)	(6,252)
Common stock repurchases for tax withholdings for net settlement of equity awards	(4,894)	(49,003)	(45,769)
Principal payment of lease liabilities arising from a finance lease	(451)	(415)	(486)
Proceeds from the issuance of common stock	5,625	36,062	11,522
Net cash used in financing activities	(5,334)	(19,606)	(41,505)
Effects of exchange rate changes on cash and cash equivalents	(1,677)	(1,272)	1,108
Net change in cash and cash equivalents	6,307	(33,581)	(7,639)
Cash and cash equivalents at beginning of period	94,847	128,428	136,067
Cash and cash equivalents at end of period	101,154	94,847	128,428
Supplemental information:
Cash paid for income taxes	11,185	12,273	6,177
Cash paid for interest	$ 11,570	$ 9,088	$ 9,550