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Business Combinations (Schedule of Net Assets Acquired) (Details) (USD $) In Thousands, unless otherwise specified				3 Months Ended
	Feb. 28, 2014	Nov. 30, 2013	May 24, 2013 Rollbase [Member]	Feb. 28, 2014 Rollbase [Member] Customer Relationships [Member]	Feb. 28, 2014 Rollbase [Member] Purchased Technology [Member]
Business Acquisition [Line Items]
Cash			$ 50
Acquired intangible assets			7,960
Goodwill	224,185	224,286	4,798
Deferred taxes			(2,921)
Accounts payable and other liabilities			(8)
Net assets acquired			$ 9,879
Acquired intangible assets, Life				1 year	5 years

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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