Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Feb. 28, 2015	Feb. 28, 2014
Cash flows from operating activities:
Net (loss) income	$ (971)us-gaap_NetIncomeLoss	$ 11,100us-gaap_NetIncomeLoss
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization of property and equipment	2,589us-gaap_Depreciation	2,410us-gaap_Depreciation
Amortization of intangibles and other	8,546us-gaap_AdjustmentForAmortization	1,064us-gaap_AdjustmentForAmortization
Stock-based compensation	5,836us-gaap_ShareBasedCompensation	5,545us-gaap_ShareBasedCompensation
Loss on disposal of property	6	14
Deferred income taxes	(17,933)	(1,439)
Excess tax benefit from stock plans	(179)	(152)
Allowances for accounts receivable	207us-gaap_ProvisionForDoubtfulAccounts	86us-gaap_ProvisionForDoubtfulAccounts
Changes in operating assets and liabilities:
Accounts receivable	13,076	8,027
Other assets	5,724	2,303
Accounts payable and accrued liabilities	(5,068)	(13,412)
Income taxes payable	508	639
Deferred revenue	24,799	9,239
Net cash flows from operating activities	37,140	25,424
Cash flows (used in) from investing activities:
Purchases of investments	(7,221)us-gaap_PaymentsToAcquireInvestments	(1,900)us-gaap_PaymentsToAcquireInvestments
Sales and maturities of investments	3,095	5,600
Purchases of property and equipment	(2,335)	(5,697)
Capitalized software development costs	(306)us-gaap_PaymentsToDevelopSoftware	(821)us-gaap_PaymentsToDevelopSoftware
Payments for acquisitions, net of cash acquired	(246,275)	0
Proceeds from divestitures, net	4,500	3,300
Decrease (increase) in other noncurrent assets	0	(108)
Net cash flows (used in) from investing activities	(248,542)	374
Cash flows from (used in) financing activities:
Proceeds from stock-based compensation plans	3,338	3,890
Purchases of common stock related to withholding taxes from the issuance of restricted stock units	0	(5)
Repurchases of common stock	(7,827)	(9,789)
Excess tax benefit from stock plans	179	152
Proceeds from the issuance of debt	150,000	0
Payment of long-term debt	(1,875)us-gaap_RepaymentsOfLongTermDebt	0us-gaap_RepaymentsOfLongTermDebt
Payment of issuance costs for long-term debt	(1,707)us-gaap_PaymentsOfDebtIssuanceCosts	0us-gaap_PaymentsOfDebtIssuanceCosts
Net cash flows from (used in) financing activities	142,108	(5,752)
Effect of exchange rate changes on cash	(6,753)	492
Net (decrease) increase in cash and cash equivalents	(76,047)	20,538
Cash and cash equivalents, beginning of period	263,082	198,818
Cash and cash equivalents, end of period	187,035	219,356
Supplemental disclosure:
Cash paid for income taxes, net of refunds of $503 in 2015 and $53 in 2014	2,399us-gaap_IncomeTaxesPaidNet	2,581us-gaap_IncomeTaxesPaidNet
Cash paid for interest	702us-gaap_InterestPaid	0us-gaap_InterestPaid
Non-cash financing activities:
Total fair value of restricted stock awards, restricted stock units and deferred stock units on date vested	$ 1,408	$ 1,152

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 45

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-Subparagraph (a)

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-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section 45

-Paragraph 15

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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