CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 37,902	$ (26,523)
Adjustments to reconcile net income (loss) to net cash provided by operations:
Depreciation and amortization	22,276	22,704
(Benefit from) provision for credit loss reserve	(412)	525
Stock-based compensation	42,179	32,954
Non-cash interest expense	3,730	4,025
Loss on debt extinguishment		19,279
Deferred tax benefit	(3,812)	(12,535)
Other	(1,590)
Changes in operating assets and liabilities:
Accounts receivable	(1,698)	3,164
Prepaid expenses and other assets	(17,065)	(21,328)
Deferred costs	5,078	(749)
Accounts payable	2,906	(170)
Accrued expenses and other liabilities	(4,026)	19,283
Deferred revenue	(34,400)	(22,052)
Net cash provided by operating activities	51,068	18,577
Cash flows from investing activities:
Capital expenditures	(8,055)	(16,075)
Purchases of marketable securities	(33,800)
Sale and maturities of marketable securities	9,000
Payments for equity investments	(2,563)
Other investing activities	702
Net cash used in investing activities	(34,716)	(16,075)
Cash flows from financing activities:
Net transaction with Parent		12,964
Distribution to Parent		(152,978)
Proceeds from long-term debt, net of discount		547,719
Payments for long-term debt issuance costs	(520)	(5,765)
Principal payments of long-term debt	(4,689)	(270,000)
Common stock repurchases for tax withholdings for net settlement of equity awards	(34,089)	(1,613)
Principal payment of lease liabilities arising from a finance lease	(326)	(96)
Proceeds from the issuance of common stock	6,682
Net cash (used in) provided by financing activities	(32,942)	130,231
Effects of exchange rate changes on cash and cash equivalents	1,363	111
Net change in cash and cash equivalents	(15,227)	132,844
Cash and cash equivalents at beginning of period	136,067
Cash and cash equivalents at end of period	120,840	132,844
Supplemental information:
Cash paid for income taxes	1,946	931
Cash paid for interest	$ 8,817	$ 14,344