Business Combination (Details) (Nemean Networks, LLC, USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	1 Months Ended
Aug. 31, 2010	Sep. 30, 2012
Nemean Networks, LLC
Business Acquisition [Line Items]
Consideration for acquisition	$ 3.7
Non-contingent payment		$ 1.0
Non-contingent payment, number of shares		6,250

Number of shares of equity interests issued or issuable to acquire entity.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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