CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 163,022	$ 133,202
Accounts receivable, net	384,024	322,410
Prepaid expenses and other current assets	27,965	29,103
Total current assets	575,011	484,715
Marketable securities	32,047	24,515
Other investments	1,253	1,135
Property and equipment, net	11,799	17,580
Operating lease right-of-use assets	26,597	36,688
Goodwill	776,620	761,067
Intangible assets, net	1,192	2,017
Deferred income tax	50,101	11,803
Other assets	109,949	102,514
Total assets	1,584,569	1,442,034
Current liabilities:
Accounts payable	16,787	17,273
Accrued compensation and employee benefits	83,546	97,893
Other accrued liabilities	50,314	66,248
Deferred revenue	127,299	120,045
Current maturities on debt	115,000	30,000
Total current liabilities	392,946	331,459
Long-term debt	1,814,660	1,823,669
Operating lease liabilities	24,619	39,192
Other liabilities	56,320	49,661
Total liabilities	2,288,545	2,243,981
Commitments and contingencies
Stockholders’ deficit:
Preferred stock ($0.01 par value; 1,000 shares authorized; none issued and outstanding)	0	0
Common stock ($0.01 par value; 200,000 shares authorized, 88,857 shares issued and 24,892 and 25,154 shares outstanding at June 30, 2023 and September 30, 2022, respectively)	249	252
Additional paid-in-capital	$ 1,312,390	$ 1,299,588
Treasury stock, shares	63,965	63,703
Treasury stock, at cost (63,965 and 63,703 shares at June 30, 2023 and September 30, 2022, respectively)	$ (5,208,553)	$ (4,935,769)
Retained earnings	3,286,635	2,958,684
Accumulated other comprehensive loss	(94,697)	(124,702)
Total stockholders’ deficit	(703,976)	(801,947)
Total liabilities and stockholders’ deficit	$ 1,584,569	$ 1,442,034