Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Details)

v3.10.0.1
Discontinued Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 01, 2014
Oct. 28, 2018
Jul. 29, 2018
Apr. 29, 2018
Jan. 28, 2018
Oct. 29, 2017
Jul. 30, 2017
Apr. 30, 2017
Jan. 29, 2017
Oct. 28, 2018
Oct. 29, 2017
Oct. 27, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Settlement and impairment charges   $ 351 $ 0 $ 155 $ 0 $ 1,404 $ 0 $ 290 $ 0 $ 506 $ 1,694  
NewNet Communication Technologies, LLC | Computer Systems Segment | Discontinued Operations, Disposed of by Sale                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Note receivable $ 10,000                      
Interest rate 0.50%                      
Payment term 4 years                      
Capital interest percentage (up to) 20.00%                      
Unamortized discount $ 1,100                      
Gross receivable amount                       $ 7,500
Working capital adjustment           $ 1,700         1,700 1,500
Receivable amount, net of working capital adjustment                       $ 6,000
Settlement and impairment charges                     $ 1,400  
NewNet Communication Technologies, LLC | Computer Systems Segment | Discontinued Operations, Disposed of by Sale | Notes Receivable                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Loan receivable fair value $ 8,400