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Significant accounting policies Inventories (Details) - USD ($) $ in Thousands | Jan. 31, 2017 | Jan. 31, 2016
--- | --- | ---
Raw materials | $ 13,648 | $ 15,291
Work in process | 1,105 | 1,168
Finished goods | 836 | 722
Subtotal | 15,589 | 17,181
Less allowances | 2,024 | 1,556
Inventories | $ 13,565 | $ 15,625

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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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