CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 137,771	$ 133,202
Accounts receivable, net	338,239	322,410
Prepaid expenses and other current assets	45,316	29,103
Total current assets	521,326	484,715
Marketable securities	29,580	24,515
Other investments	1,232	1,135
Property and equipment, net	13,664	17,580
Operating lease right-of-use assets	29,638	36,688
Goodwill	774,330	761,067
Intangible assets, net	1,467	2,017
Deferred income tax	30,618	11,803
Other assets	100,576	102,514
Total assets	1,502,431	1,442,034
Current liabilities:
Accounts payable	13,915	17,273
Accrued compensation and employee benefits	65,863	97,893
Other accrued liabilities	68,152	66,248
Deferred revenue	118,348	120,045
Current maturities on debt	107,000	30,000
Total current liabilities	373,278	331,459
Long-term debt	1,817,663	1,823,669
Operating lease liabilities	28,825	39,192
Other liabilities	53,458	49,661
Total liabilities	2,273,224	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 25,016 and 25,154 shares outstanding at March 31, 2023 and September 30, 2022, respectively)	250	252
Additional paid-in-capital	$ 1,281,270	$ 1,299,588
Treasury stock, shares	63,841	63,703
Treasury stock, at cost (63,841 and 63,703 shares at March 31, 2023 and September 30, 2022, respectively)	$ (5,110,421)	$ (4,935,769)
Retained earnings	3,157,877	2,958,684
Accumulated other comprehensive loss	(99,769)	(124,702)
Total stockholders’ deficit	(770,793)	(801,947)
Total liabilities and stockholders’ deficit	$ 1,502,431	$ 1,442,034