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Debt Term Loans (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013
Loans Payable | $ 6,494,000 | $ 10,608,000
Debt Instrument, Issuance Date | Jan. 18, 2008 |
Debt Instrument, Periodic Payment | 23,000 |
Mortgage Loans on Real Estate, Final Maturity Date | Jan. 31, 2018 |
Debt Instrument, Interest Rate at Period End | 6.30% |
Capital Lease Obligations [Member] |  |
Debt Instrument, Maturity Date Range, End | May 31, 2015 |
Debt Instrument, Periodic Payment | 0 |
Debt Instrument, Maturity Date Range, Start | Jun. 30, 2014 |
Debt Instrument, Name [Domain] |  |
Debt Instrument, Increase, Additional Borrowings | 2,500,000 |
Short-term Debt | 600,000 |
Debt Instrument, Issuance Date | Aug. 28, 2007 |
Line of Credit Facility, Interest Rate at Period End | 3.25% |
Debt, Weighted Average Interest Rate | 4.20917% | 4.24%
Debt Instrument, Basis Spread on Variable Rate | 0.50% |
Debt Instrument, Periodic Payment | 107,000 |
Debt Instrument, Interest Rate at Period End | 0.25% |
Debt Instrument, Face Amount | 3,000,000 |
1.360 Euro loan [Member] |  |
Debt Instrument, Issuance Date | Dec. 10, 2012 |
Face value of debt in local currency | 1.4 million Euros |
Debt Instrument, Periodic Payment | 108,000 |
Debt Instrument, Maturity Date | Dec. 31, 2017 |
Debt Instrument, Interest Rate at Period End | 3.70% |
Debt Instrument, Face Amount | 1,800,000 |
423K Dirhams loan [Member] |  |
Debt Instrument, Issuance Date | Nov. 25, 2012 |
Face value of debt in local currency | 0.4 million Dirhams |
Debt Instrument, Periodic Payment | 5,000 |
Debt Instrument, Interest Rate at Period End | 3.40% |
Debt Instrument, Face Amount | 115,000 |
Saudi term loan [Member] |  |
Debt Instrument, Issuance Date | Apr. 10, 2012 |
Face value of debt in local currency | 22.2 million Dirhams |
Debt Instrument, Periodic Payment | 408,000 |
Debt Instrument, Maturity Date | Apr. 30, 2017 |
Debt Instrument, Interest Rate at Period End | 5.50% |
Debt Instrument, Face Amount | 5,900,000 |
700K Euro loan [Member] |  |
Debt Instrument, Issuance Date | Apr. 08, 2003 |
Face value of debt in local currency | 0.7 million Euros |
Debt Instrument, Periodic Payment | 9,000 |
Debt Instrument, Maturity Date | Apr. 30, 2014 |
Debt Instrument, Interest Rate at Period End | 6.10% |
Debt Instrument, Face Amount | 800,000 |
Perma Pipe US [Member] |  |
Debt Instrument, Issuance Date | May 14, 2010 |
Debt Instrument, Periodic Payment | 24,000 |
Debt Instrument, Maturity Date | May 31, 2014 |
Debt Instrument, Interest Rate at Period End | 5.80% |
Debt Instrument, Face Amount | $ 1,000,000 |

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- Definition Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer). + 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 210.9-03.16) -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 210.7-03.16(a)(2)) -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 02 -Paragraph 19, 20, 22 -Article 5 + Details
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