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Income taxes Components of income tax (benefit) expense (Tables)
 12 Months Ended
Jan. 31, 2014
Income taxes [Abstract]  
Components of income tax (benefit) expense [Table Text Block]
Components of income tax (benefit) expense
 
 
Current
 
 
Federal
($245)
($964)
Foreign
3,024

229

State and other
(82
)
(34
)
Subtotal
2,697

(769
)
Deferred
 
 
Federal
(2,715
)
12,545

Foreign
(475
)
466

State and other
—

(417
)
Subtotal
(3,190
)
12,594

Total
$(493)
$11,825
Effective income tax rate reconciliation[Table Text Block]
 
2013

2012

Tax benefit at federal statutory rate
$4,182
($3,037)
Domestic valuation allowance
—

12,975

Valuation allowance for state NOLs
—

972

Differences in foreign tax rate
(3,049
)
823

Foreign tax credit
—

(67
)
Research tax credit
—

(46
)
Valuation allowance for foreign NOLs
(1,209
)
613

Nontaxable income from the Canadian joint venture
(179
)
(471
)
State taxes, net of federal benefit
(192
)
(247
)
All other, net expense
(46
)
310

Total

($493
)

$11,825