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Significant accounting policies Accumulated other comprehensive loss (Tables)
12 Months Ended
Jan. 31, 2015
Accumulated other comprehensive loss [Abstract]  
Accumulated other comprehensive loss [Table Text Block]
 
2014

2013

Equity adjustment foreign currency

($1,721
)

($90
)
Minimum pension liability, gross
(3,124)
(1,513)
Interest rate swap, gross
(119)
(68)
Subtotal excluding tax effect
(4,964)
(1,671)
Tax effect of foreign exchange
(74)
12
Tax effect of minimum pension liability
481
482
Tax effect of interest rate swap
28
17
Total other comprehensive loss
($4,529)
($1,160)