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Contracts and Notes Receivable (Details) (USD $) |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2013 Customers | Jan. 31, 2012 Customers | Jan. 31, 2013 Maximum [Member] | Jan. 31, 2013 Minimum [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |  |  |
Contracts receivable repayment term |  |  | 17 months | 7 months
Contracts Receivable (Textual) [Abstract] |  |  |  |
Contracts receivable | $ 2,096,000 | $ 2,273,000 |  |
Contracts receivable bearing interest rate | 8.70% | 8.70% |  |
Number of customers due | 3 | 2 |  |
Allowance for contract receivable | $ 0 |  |  |

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- Definition Contracts receivable repayment term. + References No definition available. + Details
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- Details
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- Definition Number of customers. + References No definition available. + Details
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- Definition Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Definition The weighted average interest rate charged on contract receivables maturing after one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6471494&loc=d3e49354-109356 + Details
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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