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Other Intangible Assets - Intangible Assets (Detail) (USD $) | 6 Months Ended |
--- | --- | ---
Jul. 31, 2014 | Jan. 31, 2014
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Intangible Assets Gross Excluding Goodwill | $ 3,824,000 |
Trade name - GPS, Accumulated Amortization | 1,857,000 |
Intangible assets, Net Amount | 1,967,000 | 2,088,000
Trade Name [Member] | SMC [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Trade name - SMC, Estimated Useful Life | Indefinite |
Trade Name [Member] | GPS [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Trade name - GPS, Estimated Useful Life | 15 years |
Trade name - GPS, Gross Carrying Amount | 3,643,000 |
Trade name - GPS, Accumulated Amortization | 1,857,000 |
Trade name - GPS, Net Amount | 1,786,000 | 1,907,000
Trade Name [Member] | SMC [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Trade name - SMC, Net Amount | 181,000 | 181,000
Trade name - SMC, Gross Carrying Amount | $ 181,000 |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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