Acquisitions (Schedule of Purchase Price Allocation) (Details) (Vyatta, USD $) In Thousands, unless otherwise specified	Nov. 09, 2012
Business Acquisition, Purchase Price Allocation
Cash	$ 140
Accounts receivable	511
Identifiable intangible assets	24,980
Goodwill (1)	25,586	[1]
Other assets	1,017
Total assets acquired	52,234
Deferred tax liability	3,401
Deferred revenue	1,333
Accounts payable and other accrued liabilities	2,731
Total liabilities assumed	7,465
Net assets acquired	44,769
In-process technology
Business Acquisition, Purchase Price Allocation
Identifiable intangible assets	21,590
Customer relationships
Business Acquisition, Purchase Price Allocation
Identifiable intangible assets	1,080
Core/developed technology
Business Acquisition, Purchase Price Allocation
Identifiable intangible assets	1,040
Non-compete agreements
Business Acquisition, Purchase Price Allocation
Identifiable intangible assets	810
Trade name
Business Acquisition, Purchase Price Allocation
Identifiable intangible assets	$ 460

[1] None of the goodwill recognized is expected to be deductible for income tax purposes.