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Supplemental Cash Flow Information Supplemental Cash Flow Detail (Tables)
 12 Months Ended
Jan. 31, 2013
Supplemental Cash Flow Elements [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
The following provides information concerning supplemental disclosures of cash flow activities:
 
Year ended January 31,
2013
 
2012
 
2011
Cash paid for:
 
 
 
 
 
Interest
$
11,981

 
$
14,686

 
$
13,701

Income taxes
$
10,777

 
$
8,707

 
$
10,627