CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 162,157	$ 195,354
Accounts receivable, net	260,161	312,107
Prepaid expenses and other current assets	39,678	43,513
Total current assets	461,996	550,974
Marketable securities	33,926	31,884
Other investments	1,316	1,312
Property and equipment, net	24,597	27,913
Operating lease right-of-use assets	46,061	47,275
Goodwill	787,259	788,185
Intangible assets, net	3,558	4,099
Deferred income tax	16,612	20,549
Other assets	87,985	95,585
Total assets	1,463,310	1,567,776
Current liabilities:
Accounts payable	20,422	20,749
Accrued compensation and employee benefits	62,926	103,506
Other accrued liabilities	75,068	79,535
Deferred revenue	98,381	105,417
Current maturities on debt	65,000	250,000
Total current liabilities	321,797	559,207
Long-term debt	1,568,292	1,009,018
Operating lease liabilities	50,972	53,670
Other liabilities	60,548	56,823
Total liabilities	2,001,609	1,678,718
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 26,509 and 27,568 shares outstanding at December 31, 2021 and September 30, 2021, respectively)	265	276
Additional paid-in-capital	$ 1,208,365	$ 1,237,348
Treasury stock, shares	62,348	61,289
Treasury stock, at cost (62,348 and 61,289 shares at December 31, 2021 and September 30, 2021, respectively)	$ (4,339,039)	$ (3,857,855)
Retained earnings	2,670,102	2,585,143
Accumulated other comprehensive loss	(77,992)	(75,854)
Total stockholders’ deficit	(538,299)	(110,942)
Total liabilities and stockholders’ deficit	$ 1,463,310	$ 1,567,776