Assets and Liabilities Held for Sale (Details) - Information Technology Infrastructure Support Service - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2015	Jan. 31, 2016	Nov. 01, 2015	Oct. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets	$ 700	$ 100	$ 700
Assets included as part of continuing operations
Cash and cash equivalents			1,537	$ 0
Trade accounts receivable, net			15,671	13,553
Recoverable income taxes			165	15
Prepaid insurance and other assets			4,886	3,339
Property, equipment and software, net			189	178
Purchased intangible assets			495	495
Total major classes of assets of discontinued operations - Computer Systems			22,943	17,580
Liabilities included as part of continuing operations
Accrued compensation			3,509	2,432
Accounts payable			1,387	921
Accrued taxes other than income taxes			1,165	833
Accrued insurance and other			1,284	1,574
Total major classes of liabilities as part of continuing operations - Maintech and Lakyfor, S.A.			$ 7,345	$ 5,760