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Purchased Intangible Assets (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Jan. 31, 2011
Summary of Other Intangible Asset |  |  |
Non-compete GPS, Estimated Useful | 5 years | 5 years |
Trade name - GPS, Estimated Useful Life | 15 years | 15 years |
Trade name - SMC, Estimated Useful Life | Indefinite | Indefinite |
Non-compete GPS, Net Amount, Beginning Balance |  | $ 91,000 |
Trade name - GPS, Net Amount, Beginning Balance | 2,393,000 | 2,636,000 |
Trade name - SMC, Net Amount , Beginning Balance | 181,000 | 181,000 |
Non-compete GPS, Additions |  |  |
Trade name GPS, Additions |  |  |
Trade name SMC, Additions |  |  |
Additions, Total |  |  |
Non-compete GPS, Amortization |  | 91,000 |
Trade name, Amortization | 243,000 | 243,000 |
Total, Amortization | 243,000 | 334,000 |
Non-compete GPS, Net Amount, Ending Balance |  |  |
Trade name - GPS, Net Amount, Ending Balance | 2,150,000 | 2,393,000 |
Trade name - SMC, Net Amount , Ending Balance | 181,000 | 181,000 |
Totals | $ 2,331,000 | $ 2,574,000 | $ 2,908,000

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