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Significant accounting policies Accumulated other comprehensive loss (Tables) | 12 Months Ended
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Jan. 31, 2013
Accumulated other comprehensive loss [Abstract] |
Accumulated other comprehensive loss [Table Text Block] |
| 2012 |  | 2011 |
Equity adjustment foreign currency |  | $1,179 |  |  | $1,442 |
Minimum pension liability, gross | (2,479 | ) | (2,945 | )
Interest rate swap, gross | (219 | ) | (316 | )
Subtotal excluding tax effect | (1,519 | ) | (1,819 | )
Tax effect of foreign exchange | 12 |  | — |
Tax effect of minimum pension liability | 765 |  | 1,119 |
Tax effect of interest rate swap | 17 |  | 120 |
Total other comprehensive loss | ($725) | ($580)

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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=20435746&loc=SL7669686-108580 + Details
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