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Retirement plans Plan assets (Tables) | 12 Months Ended
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Jan. 31, 2013
Plan assets [Abstract] |
Plan assets [Table Text Block] |
Plan assets | Market Value |
Vanguard balanced index fund | $5,554
Vanguard inflation protected fund | 279 |
Fifth Third Banksafe Trust | 106 |
Vanguard REIT index fund | 126 |
Total at January 31, 2013 |  | $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=21915506&loc=d3e1928-114920 + Details
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