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Acquisition - Value of the Acquired Identifiable Intangible Assets and Related Estimated Useful Lives (Detail) (Miltope Ruggedized Printer Product Line Operation [Member], USD $) In Thousands, unless otherwise specified |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2014 | Jan. 22, 2014 | Jan. 31, 2014 Customer Contract Relationships [Member] | Jan. 31, 2014 Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |
Fair Value | $ 3,400 | $ 3,400 | $ 3,100 | $ 300
Useful Life |  |  | 10 years | 1 year

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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