Assets and Liabilities Held for Sale (Details) - Information Technology Infrastructure Support Service - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2016	Nov. 01, 2015	May. 01, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets		$ 700
Loss on disposal of discontinued operations	$ 100
Assets included as part of continuing operations
Cash and cash equivalents		1,537	$ 3,773
Trade accounts receivable, net		15,671	12,939
Recoverable income taxes		165	22
Prepaid insurance and other assets		4,886	4,208
Property, equipment and software, net		189	135
Purchased intangible assets		495	495
Total major classes of assets of discontinued operations - Computer Systems		22,943	21,572
Liabilities included as part of continuing operations
Accrued compensation		3,509	2,478
Accounts payable		1,387	816
Accrued taxes other than income taxes		1,165	924
Accrued insurance and other		523	758
Deferred revenue		761	1,143
Total major classes of liabilities of discontinued operations - Computer Systems		$ 7,345	$ 6,119