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Revenue Recognition - Summary of Revenues Disaggregated by Primary Geographic Markets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 28, 2018	Apr. 29, 2017
Disaggregation of Revenue [Line Items]
Revenue	$ 31,487	$ 24,458
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue	19,233	15,683
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue	7,834	6,383
Canada [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,445	1,176
Asia [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,439	290
Central and South America [Member]
Disaggregation of Revenue [Line Items]
Revenue	1,054	832
Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 482	$ 94

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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