CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	May 31, 2014	May 31, 2013
Operating activities:
Net income	$ 13,701	$ 18,319
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment	9,455	7,839
Amortization of acquired intangible assets	20,197	17,377
Amortization of debt discount and transaction costs	9,851	9,460
Stock-based compensation	23,323	31,335
Deferred income tax	2,171	(15,007)
Tax benefits related to stock benefit plans	3,824	5,278
Excess tax benefits from stock-based compensation	(8,119)	(7,139)
Other non-cash adjustments, net	652	506
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	22,451	43,573
Prepaid expenses and other assets	22,432	(2,633)
Accounts payable	(5,973)	10,698
Accrued liabilities and restructuring costs	(54,446)	(17,264)
Deferred revenue	11,399	(14,264)
Net cash provided by operating activities	70,918	88,078
Investing activities:
Purchases of short-term investments	(192,570)	(38,261)
Maturities and sales of short-term investments	101,118	8,829
Acquisitions, net of cash acquired	(182,828)	(4,261)
Purchases of property and equipment	(15,677)	(5,768)
Other investing activities, net	1,381	(380)
Net cash used in investing activities	(288,576)	(39,841)
Financing activities:
Principal payments on debt	0	(35,711)
Proceeds from issuance of common stock	17,289	9,255
Repurchases of the Company’s common stock	(55,938)	(81,208)
Withholding taxes related to restricted stock net share settlement	(8,538)	(9,899)
Excess tax benefits from stock-based compensation	8,119	7,139
Net cash used in financing activities	(39,068)	(110,424)
Effect of foreign exchange rate changes on cash and cash equivalents	(214)	(2,353)
Net decrease in cash and cash equivalents	(256,940)	(64,540)
Cash and cash equivalents at beginning of period	662,109	727,309
Cash and cash equivalents at end of period	405,169	662,769
Supplemental disclosures:
Interest paid	7,259	7,475
Income taxes paid	$ 8,938	$ 10,767