CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 32,104	$ 1,529
Adjustments to reconcile net income to net cash provided by (used in) operations:
Depreciation and amortization	14,947	14,971
(Benefit from) provision for credit loss reserve	(261)	446
Stock-based compensation	27,469	15,529
Non-cash interest expense	2,454	2,646
Deferred tax benefit	(7,653)	(4,836)
Other	(1,481)
Changes in operating assets and liabilities:
Accounts receivable	(8,206)	(27,085)
Prepaid expenses and other assets	(7,608)	(13,605)
Deferred costs	3,835	(1,079)
Accounts payable	(4,129)	6,384
Accrued expenses and other liabilities	(2,970)	13,029
Deferred revenue	(21,492)	(8,663)
Net cash provided by (used in) operating activities	27,009	(735)
Cash flows from investing activities:
Capital expenditures	(5,181)	(10,145)
Purchases of marketable securities	(9,067)
Maturities of marketable securities	2,700
Payments for equity investments	(2,563)
Other investing activities	264
Net cash used in investing activities	(13,847)	(10,145)
Cash flows from financing activities:
Net transaction with Parent		13,513
Distribution to Parent		(152,978)
Proceeds from long-term debt, net of discount		249,705
Payments for long-term debt issuance costs	(520)	(515)
Principal payments of long-term debt	(3,126)	(2,363)
Common stock repurchases for tax withholdings for net settlement of equity awards	(32,200)	(919)
Principal payment of lease liabilities arising from a finance lease	(238)	(67)
Proceeds from the issuance of common stock	5,045
Net cash (used in) provided by financing activities	(31,039)	106,376
Effects of exchange rate changes on cash and cash equivalents	1,356	88
Net change in cash and cash equivalents	(16,521)	95,584
Cash and cash equivalents at beginning of period	136,067
Cash and cash equivalents at end of period	119,546	95,584
Supplemental information:
Cash paid for income taxes	1,446	627
Cash paid for interest	$ 5,403	$ 8,997