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Accumulated Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Jan. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Changes in components of accumulated other comprehensive income (loss)
The changes in the components of accumulated other comprehensive income (loss) (AOCI) are shown below:
 
 
Cumulative foreign currency translation adjustment
 
Postretirement benefits
 
Total
Balance at January 31, 2012
 
$
145

 
$
(2,107
)
 
$
(1,962
)
Other comprehensive (loss) before reclassifications
 
(3
)
 
—

 
(3
)
Amounts reclassified from accumulated other comprehensive (loss) after tax benefit of $70
 
—

 
(130
)
 
(130
)
Balance at January 31, 2013
 
142

 
(2,237
)
 
(2,095
)
Other comprehensive (loss) before reclassifications
 
(424
)
 
—

 
(424
)
Amounts reclassified from accumulated other comprehensive income after tax (expense) of ($183)
 
—

 
340

 
340

Balance at January 31, 2014
 
(282
)
 
(1,897
)
 
(2,179
)
Other comprehensive (loss) before reclassifications
 
(1,466
)
 
—

 
(1,466
)
Amounts reclassified from accumulated other comprehensive (loss) after tax benefit of $1,187
 
—

 
(2,204
)
 
(2,204
)
Balance at January 31, 2015
 
$
(1,748
)
 
$
(4,101
)
 
$
(5,849
)