CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net (loss) income from continuing operations	$ (57,559)	$ 6,954
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation	11,019	7,993
Amortization	11,969	14,793
Stock-based compensation	38,399	34,906
Non-cash interest expense	4,144	12,324
Deferred tax provision (benefit)	14,386	(5,435)
Loss on extinguishment of debt	215	0
Other	651	3,028
Changes in operating assets and liabilities, excluding effects of acquisitions:
Accounts receivable	(19,354)	(40,023)
Prepaid expenses and other assets	40,930	(5,892)
Accounts payable	(14,934)	11,636
Accrued expenses and other liabilities	(29,480)	(9,480)
Deferred revenue	13,464	23,814
Net cash provided by operating activities - continuing operations	13,850	54,618
Net cash provided by operating activities - discontinued operations	0	6,570
Net cash provided by operating activities	13,850	61,188
Cash flows from investing activities:
Capital expenditures	(12,394)	(17,400)
Purchases of marketable securities and other investments	0	(41,366)
Proceeds from sales and maturities of marketable securities and other investments	22,162	37,582
Payments for business and asset acquisitions, net of cash acquired	(5,375)	(250)
Other	209	(545)
Net cash provided by (used in) investing activities	4,602	(21,979)
Cash flows from financing activities:
Repurchase and redemption of debt	(28,646)	0
Payments for taxes related to net share settlement of equity awards	(82,763)	(43,729)
Other financing activities	(78)	(6)
Net cash used in financing activities	(111,487)	(43,735)
Effects of exchange rate changes on cash and cash equivalents	(2,323)	2,739
Net decrease in cash and cash equivalents	(95,358)	(1,787)
Cash and cash equivalents at beginning of period	187,307	301,233
Cash and cash equivalents at end of period	$ 91,949	$ 299,446