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Income taxes Components of income tax (benefit) expense (Tables)
 12 Months Ended
Jan. 31, 2016
Income taxes [Abstract]  
Components of income tax expense (benefit) [Table Text Block]
Components of income tax expense (benefit)
2015

2014

Current
 
 
Federal
$12
$49
Foreign
1,541

1,851

State and other
71

(80
)
Subtotal
1,624

1,820

Deferred
 
 
Federal
—

—

Foreign
(249
)
1,231

State and other
—

—

Subtotal
(249
)
1,231

Total
$1,375
$3,051
Effective income tax rate reconciliation[Table Text Block]
 
2015

2014

Tax benefit at federal statutory rate
$1,023
$2,478
Permanent differences management fee allocation
619

1,946

Domestic valuation allowance
804

—

Permanent differences other
214

(540
)
Valuation allowance for state NOLs
88

(318
)
Differences in foreign tax rate
(780
)
(291
)
Foreign tax credit
(761
)
(793
)
Domestic deferred tax true ups
(346
)
—

Research tax credit
(54
)
(29
)
Repatriation
821

1,530

Valuation allowance for foreign NOLs
32

35

Nontaxable income from the Canadian joint venture
(205
)
(666
)
State taxes, net of federal benefit
(58
)
(131
)
All other, net expense
(22
)
(170
)
Total

$1,375


$3,051