CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 94,213	$ 105,618
Accounts receivable, net	164,660	168,586
Prepaid expenses and other current assets	40,263	36,727
Total current assets	299,136	310,931
Marketable Securities	15,816
Marketable securities		13,791
Other investments	11,734	11,724
Property and equipment, net	38,808	40,703
Goodwill	806,332	804,414
Intangible assets, net	19,514	21,185
Deferred income taxes	40,699	47,204
Other assets	8,806	5,668
Total assets	1,240,845	1,255,620
Current liabilities:
Accounts payable	19,201	19,510
Accrued compensation and employee benefits	49,031	77,610
Other accrued liabilities	25,305	32,104
Deferred revenue	58,743	55,431
Current maturities on debt	201,000	142,000
Total current liabilities	353,280	326,655
Long-term debt	462,834	462,801
Other liabilities	39,089	39,627
Total liabilities	855,203	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 30,246 and 30,243 shares outstanding at December 31, 2017 and September 30, 2017, respectively)	302	302
Paid-in-capital	1,160,274	1,195,431
Treasury stock, at cost (58,611 and 58,614 shares at December 31, 2017 and September 30, 2017, respectively)	(2,337,205)	(2,301,097)
Retained earnings	1,625,694	1,598,395
Accumulated other comprehensive loss	(63,423)	(66,494)
Total stockholders’ equity	385,642	426,537
Total liabilities and stockholders’ equity	$ 1,240,845	$ 1,255,620

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.