CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 107,868	$ 105,618
Accounts receivable, net	188,538	168,586
Prepaid expenses and other current assets	36,813	36,727
Total current assets	333,219	310,931
Marketable Securities	16,134
Marketable securities		13,791
Other investments	11,778	11,724
Property and equipment, net	45,111	40,703
Goodwill	813,107	804,414
Intangible assets, net	18,151	21,185
Deferred income taxes	41,383	47,204
Other assets	12,012	5,668
Total assets	1,290,895	1,255,620
Current liabilities:
Accounts payable	23,539	19,510
Accrued compensation and employee benefits	57,294	77,610
Other accrued liabilities	31,695	32,104
Deferred revenue	65,018	55,431
Current maturities on debt	191,000	142,000
Total current liabilities	368,546	326,655
Long-term debt	512,868	462,801
Other liabilities	38,778	39,627
Total liabilities	920,192	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 29,835 and 30,243 shares outstanding at March 31, 2018 and September 30, 2017, respectively)	298	302
Paid-in-capital	1,176,905	1,195,431
Treasury stock, at cost (59,022 and 58,614 shares at March 31, 2018 and September 30, 2017, respectively)	(2,410,171)	(2,301,097)
Retained earnings	1,657,969	1,598,395
Accumulated other comprehensive loss	(54,298)	(66,494)
Total stockholders’ equity	370,703	426,537
Total liabilities and stockholders’ equity	$ 1,290,895	$ 1,255,620