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Significant accounting policies Accumulated other comprehensive loss (Tables) | 12 Months Ended
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Jan. 31, 2017
Accumulated other comprehensive loss [Abstract] |
Accumulated other comprehensive loss [Table Text Block] |
| 2016 |  | 2015 |
Equity adjustment foreign currency, gross |  | ($1,409 | ) |  | ($2,208 | )
Minimum pension liability, gross | (1,472) | (2,303)
Marketable security, gross | 142 | 118
Subtotal excluding tax effect | (2,739) | (4,393)
Tax effect of foreign exchange currency | (50) | (69)
Tax effect of minimum pension liability | 115 | 523
Tax effect of marketable security | (50) | (41)
Total other comprehensive loss | ($2,724) | ($3,980)

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- Definition Accumulated other comprehensive loss [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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