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Subsequent Event (Details Textual) (Sigrity [Member], USD $) In Millions, unless otherwise specified	Jul. 02, 2012
Sigrity [Member]
Subsequent Event (Textual) [Abstract]
Total consideration paid to acquire business, net of cash acquired	$ 78.3
Cash acquired	7.8
Additional payments deferred on the acquisition date	14.2
Expense over designated retention periods	14.2
Remaining consideration allocated based on the fair value of the net assets acquired	$ 64.1

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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- Definition

For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs.

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