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Correction of Immaterial Errors (Tables)
 3 Months Ended
Apr. 30, 2014
Accounting Changes and Error Corrections [Abstract]  
Schedule of effect of recording immaterial corrections in the condensed consolidated balance sheets and consolidated statements of comprehensive income (loss)
The effect of recording immaterial corrections in the condensed consolidated balance sheets and consolidated statements of comprehensive income (loss) for the quarters ended April 30, July 31 and October 31, 2013 are as follows:
 
 
For the Quarter Ended April 30, 2013
 
For the Quarter Ended July 31, 2013
 
For the Quarter Ended October 31, 2013
(in thousands)
 
As Previously Reported
 
As Corrected
 
As Previously Reported
 
As Corrected
 
As Previously Reported
 
As Corrected
Accrued pension expenses
 
$
26,476

 
$
26,074

 
$
26,567

 
$
25,763

 
$
26,398

 
$
25,192

Total stockholder’s equity
 
22,715

 
23,117

 
28,901

 
29,705

 
33,181

 
34,387

Net income (loss)
 
(4,447
)
 
(4,447
)
 
6,210

 
6,210

 
3,408

 
3,408

Comprehensive income (loss)
 
(4,447
)
 
(4,045
)
 
6,210

 
6,612

 
4,208

 
4,610

Impact for period-to-date comprehensive income (loss)
 
(4,447
)
 
(4,045
)
 
1,763

 
2,567

 
5,971

 
7,177