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Accrued Expenses - Summary of Accrued expenses (Detail) (USD $) | Jan. 31, 2014 | Jan. 31, 2013
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Payables And Accruals [Abstract] |  |
Product replacement cost reserve | $ 480,000 |
Reserve for cash in escrow |  | 1,800,000
Warranty | 355,000 | 350,000
Professional fees | 269,000 | 174,000
Executive retirement package | 250,000 |
Health insurance reimbursement reserve | 75,000 | 100,000
Dealer commissions | 55,000 | 91,000
Other | 826,000 | 649,000
Total | $ 2,310,000 | $ 3,164,000

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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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