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Retirement plans Plan assets (Tables) | 12 Months Ended
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Jan. 31, 2014
Plan assets [Abstract] |
Schedule of Allocation of Plan Assets [Table Text Block] |
Level 1 market value of plan assets | 2013 | 2012
Equity securities | $3,340 | $3,343
U.S. bond market | 2,453 | 2,183
High-quality inflation-indexed bonds issued by the U.S. Treasury and government agencies as well as domestic corporations | 0 | 279
Real estate securities | 149 | 126
Subtotal | 5,942 | 5,931
Level 2 significant other observable inputs |  |
Money market fund | 409 | 134
Total | $6,351 | $6,065

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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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