CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 119,929	$ 105,618
Accounts receivable, net	182,419	168,586
Prepaid expenses and other current assets	32,944	36,727
Total current assets	335,292	310,931
Marketable Securities	16,930
Marketable securities		13,791
Other investments	11,711	11,724
Property and equipment, net	51,517	40,703
Goodwill	802,041	804,414
Intangible assets, net	16,079	21,185
Deferred income taxes	40,536	47,204
Other assets	12,964	5,668
Total assets	1,287,070	1,255,620
Current liabilities:
Accounts payable	25,509	19,510
Accrued compensation and employee benefits	75,218	77,610
Other accrued liabilities	33,899	32,104
Deferred revenue	60,587	55,431
Current maturities on debt	202,000	142,000
Total current liabilities	397,213	326,655
Long-term debt	556,713	462,801
Other liabilities	38,500	39,627
Total liabilities	992,426	829,083
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 29,317 and 30,243 shares outstanding at June 30, 2018 and September 30, 2017, respectively)	293	302
Paid-in-capital	1,192,322	1,195,431
Treasury stock, at cost (59,540 and 58,614 shares at June 30, 2018 and September 30, 2017, respectively)	(2,515,207)	(2,301,097)
Retained earnings	1,690,330	1,598,395
Accumulated other comprehensive loss	(73,094)	(66,494)
Total stockholders’ equity	294,644	426,537
Total liabilities and stockholders’ equity	$ 1,287,070	$ 1,255,620