Acqusitions and Acquisition-Related Contingent Consideration (Details 1) (Denali Software Inc [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2010
Business Acquisition, Purchase Price Allocation [Abstract]
Cash and cash equivalents	$ 46,670
Accounts receivable	11,060
Current assets	1,668
Other assets	630
Goodwill	152,172
Total assets acquired	381,000
Deferred revenue	(11,259)
Other current liabilities	(5,783)
Long-term deferred tax liabilities	(67,153)
Net assets acquired	296,805
Existing Technology
Business Acquisition, Purchase Price Allocation [Abstract]
Acquired intangibles:	65,700
Agreements and relationships
Business Acquisition, Purchase Price Allocation [Abstract]
Acquired intangibles:	98,800
Tradenames, trademarks and patents
Business Acquisition, Purchase Price Allocation [Abstract]
Acquired intangibles:	$ 4,300

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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The amount of acquisition cost of a business combination allocated to assets acquired.

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The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

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The amount of acquisition cost of a business combination allocated to current assets.

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The amount of cash and cash equivalents acquired in a business combination.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to current liabilities of the acquired entity.

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The amount of acquisition cost of a business combination allocated to deferred revenue of the acquired entity.

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Gross amount of acquisition cost of a business combination allocated to noncurrent deferred tax liabilities.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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Amount of acquisition cost of a business combination allocated to other assets not separately disclosed in the balance sheet.

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