CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 90,023	$ 105,618
Accounts receivable, net	208,865	168,586
Prepaid expenses and other current assets	39,624	36,727
Total current assets	338,512	310,931
Marketable securities	18,059	13,791
Other investments	1,697	11,724
Property and equipment, net	48,837	40,703
Goodwill	800,890	804,414
Intangible assets, net	14,536	21,185
Deferred income taxes	20,117	47,204
Other assets	12,431	5,668
Total assets	1,255,079	1,255,620
Current liabilities:
Accounts payable	20,251	19,510
Accrued compensation and employee benefits	84,292	77,610
Other accrued liabilities	30,457	32,104
Deferred revenue	52,215	55,431
Current maturities on debt	235,000	142,000
Total current liabilities	422,215	326,655
Long-term debt	528,944	462,801
Other liabilities	40,183	39,627
Total liabilities	991,342	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 29,015 and 30,243 shares outstanding at September 30, 2018 and September 30, 2017, respectively)	290	302
Paid-in-capital	1,211,051	1,195,431
Treasury stock, at cost (59,842 and 58,614 shares at September 30, 2018 and September 30, 2017, respectively)	(2,612,007)	(2,301,097)
Retained earnings	1,740,810	1,598,395
Accumulated other comprehensive loss	(76,407)	(66,494)
Total stockholders’ equity	263,737	426,537
Total liabilities and stockholders’ equity	$ 1,255,079	$ 1,255,620