Discontinued Operations - Additional Information (Details) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended
	Dec. 01, 2014	May 03, 2015	May 04, 2014	May 03, 2015	May 04, 2014	Nov. 02, 2014
Computer Systems Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on the sale transaction	$ 1,200,000
Restructuring and other related costs	2,200,000	0	(81,000)	1,709,000	623,000
Payments for restructuring				1,500,000
Expected cost remaining		800,000		800,000
NewNet Communication Technologies, LLC | Computer Systems Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Note receivable	10,000,000
Interest rate	0.50%
Payment term	4 years
Capital interest percentage	20.00%
Payment to acquire note receivable				4,000,000
Payment term				45 days
Working capital	6,000,000
Notes receivable, fair value		8,400,000		8,400,000
Receivable with imputed interest, amortization period				4 years
Receivable with imputed interest, effective yield (interest rate)				5.10%
Unamortized discount		1,500,000		1,500,000
Interest income resulting from amortization		100,000		200,000
Employee Severance | Computer Systems Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and other related costs	900,000
Professional Fees Incurred | Computer Systems Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and other related costs	900,000
Lease obligation costs | Computer Systems Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring and other related costs	400,000
Prepaid Expenses and Other Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred tax assets						6,842
Accrued Insurance and Other Liabilities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred tax liabilities						$ 3,834