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Special Charges (Details) (USD $)
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3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 36 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | |||||||||
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Aug. 04, 2012
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Jul. 30, 2011
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Aug. 04, 2012
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Jul. 30, 2011
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Aug. 04, 2012
Reduction of Operating Costs [Member]
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May 05, 2012
Reduction of Operating Costs [Member]
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Feb. 04, 2012
Reduction of Operating Costs [Member]
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Aug. 04, 2012
Reduction of Operating Costs [Member]
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Oct. 29, 2011
Reduction of Operating Costs [Member]
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Oct. 30, 2010
Reduction of Operating Costs [Member]
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Oct. 31, 2009
Reduction of Operating Costs [Member]
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Nov. 01, 2008
Reduction of Operating Costs [Member]
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Nov. 01, 2008
Reduction of Operating Costs 2008-2010 [Member]
Person
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Oct. 30, 2010
Reduction of Operating Costs 2008-2010 [Member]
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Aug. 04, 2012
Reduction of Operating Costs 2011 [Member]
Person
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Oct. 29, 2011
Reduction of Operating Costs 2011 [Member]
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Aug. 04, 2012
Reduction of Operating Costs 2012 [Member]
Person
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Feb. 04, 2012
Reduction of Operating Costs 2012 [Member]
Person
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| Summary of the Company's special charges, Income Statement | ||||||||||||||||||
| Workforce reductions | $ 7,966,000 | $ 2,239,000 | $ 10,908,000 | $ 26,583,000 | $ 1,627,000 | |||||||||||||
| Facility closure costs | 186,000 | 0 | 0 | 2,411,000 | 0 | |||||||||||||
| Non-cash impairment charge | 219,000 | 0 | 487,000 | 839,000 | 0 | |||||||||||||
| Other items | 60,000 | 0 | 24,000 | 500,000 | 0 | |||||||||||||
| Total Charges | 5,836,000 | 0 | 8,431,000 | 0 | 8,431,000 | 2,239,000 | 11,419,000 | 30,333,000 | 1,627,000 | 43,300,000 | 2,239,000 | 5,800,000 | 2,600,000 | |||||
| Summary of the Company's special charges and accruals related to ongoing actions, Balance Sheet | ||||||||||||||||||
| Accrued Restructuring, Beginning Balance | 2,352,000 | 5,112,000 | 3,876,000 | 3,876,000 | ||||||||||||||
| Fiscal 2012 special charge | 5,836,000 | 2,595,000 | ||||||||||||||||
| Severance payments | (3,043,000) | (2,760,000) | (1,359,000) | |||||||||||||||
| Facility closure costs | (128,000) | |||||||||||||||||
| Non-cash impairment charge | 219,000 | 0 | (219,000) | |||||||||||||||
| Effect of foreign currency on accrual | 3,000 | |||||||||||||||||
| Accrued Restructuring, Ending Balance | 4,801,000 | 2,352,000 | 5,112,000 | 4,801,000 | 3,876,000 | |||||||||||||
| Special Charges (Textual) [Abstract] | ||||||||||||||||||
| Charge related to lease obligation costs for facilities ceased using by Company | 2,100,000 | 200,000 | ||||||||||||||||
| Write-off of property, plant and equipment no longer used | 800,000 | 200,000 | ||||||||||||||||
| Contract termination costs | 500,000 | 100,000 | ||||||||||||||||
| Clean-up and closure costs that were expensed as incurred | 300,000 | |||||||||||||||||
| Number of manufacturing employees | 245 | |||||||||||||||||
| Total Charges | 5,836,000 | 0 | 8,431,000 | 0 | 8,431,000 | 2,239,000 | 11,419,000 | 30,333,000 | 1,627,000 | 43,300,000 | 2,239,000 | 5,800,000 | 2,600,000 | |||||
| Charge related to the severance and fringe benefit costs | 39,100,000 | 5,400,000 | 2,500,000 | |||||||||||||||
| Impairment of intellectual property, related to the Company's decision to abandon efforts to develop a particular expertise in power management | $ 500,000 | |||||||||||||||||
| Number of engineering and selling, marketing, general and administrative (SMGA) employees | 470 | 25 | 61 | 34 | ||||||||||||||
| Employees planned to be separated who are still employed | 2 | 25 | ||||||||||||||||