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Purchased Intangible Assets - Net Carrying Amounts of Intangible Assets, Other than Goodwill (Detail) (USD $) | Jan. 31, 2014 | Jan. 31, 2013
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Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Trade name - GPS | $ 1,907,000 |
Totals | 2,088,000 | 2,331,000
GPS [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Trade name - GPS | 1,907,000 | 2,150,000
SMC [Member] |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |
Trade name - SMC | $ 181,000 | $ 181,000

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