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Divestitures (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	12 Months Ended
Divestitures (Narrative) (Details) (USD $)	May 02, 2015	May 03, 2014	May 02, 2015	May 03, 2014	Jan. 25, 2014	Nov. 01, 2014	Jan. 17, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups
Disposal Group, Gain (Loss) on Disposal	$ 0	$ 0	$ 0	$ 4,884,000
Network Adapter Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups
Disposal Group, Description and Timing of Disposal						On January 17, 2014, the Company completed the sale of its network adapter business to QLogic Corporation as part of the Company’s business strategy to focus development on a portfolio of high-performance networking hardware and software-based products and services.
Net Assets of Disposal Group							5,100,000
Disposal Group, Goodwill							4,100,000
Disposal Group, Gain (Loss) on Disposal			$ 4,900,000
Disposal Group, Income Statement Caption					Gain on sale of network adapter business