CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 28, 2013	Feb. 28, 2012
Operating activities:
Net income	$ 9,533	$ 20,619
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment	3,863	3,476
Amortization of acquired intangible assets	8,418	7,813
Amortization of debt discount and transaction costs	4,713	228
Stock-based compensation	16,392	15,324
Deferred income tax	(9,188)	(4,700)
Tax benefits related to stock benefit plans	4,486	6,703
Excess tax benefits from stock-based compensation	(3,257)	(5,856)
Other non-cash adjustments, net	139	(229)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	63,733	8,266
Prepaid expenses and other assets	(2,426)	6,016
Accounts payable	1,953	(1,165)
Accrued liabilities and restructuring costs	(23,383)	(36,305)
Deferred revenue	(11,752)	20,935
Net cash provided by operating activities	63,224	41,125
Investing activities:
Acquisition purchase price adjustment	2,280	0
Purchases of property and equipment	(2,586)	(6,703)
Restricted cash pledged as security	(322)	(968)
Other investing activities, net	51	399
Net cash used in investing activities	(577)	(7,272)
Financing activities:
Proceeds from revolving credit facility, net	0	68,060
Principal payments on debt	(620)	(587)
Proceeds from issuance of common stock	6,086	11,862
Repurchases of the Company’s common stock	(21,871)	(67,525)
Withholding taxes related to restricted stock net share settlement	(4,890)	(4,403)
Excess tax benefits from stock-based compensation	3,257	5,856
Net cash provided by (used in) financing activities	(18,038)	13,263
Effect of foreign exchange rate changes on cash and cash equivalents	506	(893)
Net increase in cash and cash equivalents	45,115	46,223
Cash and cash equivalents at beginning of period	727,309	308,148
Cash and cash equivalents at end of period	772,424	354,371
Supplemental disclosures:
Interest paid	485	930
Income taxes paid (refund)	$ 6,371	$ (2,105)