CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020
Current assets:
Cash and cash equivalents	$ 144,662	$ 157,394
Accounts receivable, net	310,626	334,180
Prepaid expenses and other current assets	53,153	42,504
Total current assets	508,441	534,078
Marketable securities	28,455	25,513
Other investments	1,327	1,060
Property and equipment, net	39,011	46,419
Operating lease right-of-use assets	56,030	57,656
Goodwill	817,777	812,364
Intangible assets, net	8,367	9,236
Deferred income tax	15,003	14,629
Other assets	102,452	105,285
Total assets	1,576,863	1,606,240
Current liabilities:
Accounts payable	21,749	23,033
Accrued compensation and employee benefits	73,231	117,952
Other accrued liabilities	49,254	63,367
Deferred revenue	115,808	115,159
Current maturities on debt	131,000	95,000
Total current liabilities	391,042	414,511
Long-term debt	739,831	739,435
Operating lease liabilities	69,815	73,207
Other liabilities	52,054	48,005
Total liabilities	1,252,742	1,275,158
Commitments and contingencies
Stockholders’ equity:
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 29,236 and 29,096 shares outstanding at December 31, 2020 and September 30, 2020, respectively)	292	291
Additional paid-in-capital	1,145,893	1,218,583
Treasury stock, at cost (59,621 and 59,761 shares at December 31, 2020 and September 30, 2020, respectively)	(3,035,668)	(2,997,856)
Retained earnings	2,279,551	2,193,059
Accumulated other comprehensive loss	(65,947)	(82,995)
Total stockholders’ equity	324,121	331,082
Total liabilities and stockholders’ equity	$ 1,576,863	$ 1,606,240