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Schedule II Schedule II Allowance for bad debt (Tables) | 12 Months Ended
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Jan. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items] |
Summary of Valuation Allowance [Table Text Block] |
| Balance at beginning of period | Charged to costs and expenses | Deductions from reserves (1) | Charged to other accounts (2) | Balance at end of period
Year Ended January 31, 2014 |  |  |  |  |
Allowance for possible losses in collection of trade receivables | $290 | $128 | $228 | $4 | $194
Year Ended January 31, 2013 |  |  |  |  |
Allowance for possible losses in collection of trade receivables | $204 | $151 | $81 | $16 | $290

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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Valuation Allowance -URI http://asc.fasb.org/extlink&oid=6528051 + Details
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