Goodwill, Purchased Technology and Other Intangible Assets (Details Textual) - Jul. 26, 2015	Total
Finite-Lived Intangible Assets [Line Items]
Weight of discounted cash flow method	75.00%
Weight of guideline company method	25.00%
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	15 years