Discontinued Operations (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	Dec. 01, 2014	Oct. 30, 2016	Jul. 31, 2016	May 01, 2016	Jan. 31, 2016	Nov. 01, 2015	Aug. 02, 2015	May 03, 2015	Feb. 01, 2015	Oct. 30, 2016	Nov. 01, 2015	Nov. 02, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal											$ 1,500
Restructuring and severance costs		$ 1,181	$ 970	$ 840	$ 2,761	$ 542	$ 1,867	$ 251	$ 975	$ 5,752	3,635	$ 2,507
Severance
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and severance costs										5,373
Discontinued Operations, Disposed of by Sale | Computer Systems Segment | NewNet Communication Technologies, LLC
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	20.00%
Payment to acquire note receivable	$ 4,000
Payment term	45 days
Working capital	$ 6,000
Unamortized discount		$ 1,100								$ 1,100
Loss on disposal											1,500
Restructuring and severance costs											2,200
Discontinued Operations, Disposed of by Sale | Computer Systems Segment | NewNet Communication Technologies, LLC | Severance
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and severance costs											900
Discontinued Operations, Disposed of by Sale | Computer Systems Segment | NewNet Communication Technologies, LLC | Professional Fees
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and severance costs											900
Discontinued Operations, Disposed of by Sale | Computer Systems Segment | NewNet Communication Technologies, LLC | Lease Obligation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and severance costs											$ 400
Discontinued Operations, Disposed of by Sale | Computer Systems Segment | NewNet Communication Technologies, LLC | Notes Receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loan receivable fair value	$ 8,400