Other Intangible Assets (Details) (USD $)	6 Months Ended
	Jul. 31, 2013	Jan. 31, 2013
Intangible assets
Trade name - GPS, Accumulated Amortization	$ 1,614,000
Intangible Assets Gross Excluding Goodwill	3,824,000
Intangible assets, Net Amount	2,210,000	2,331,000
Trade name [Member] | GPS [Member]
Intangible assets
Trade name - GPS, Estimated Useful Life	15 years
Trade name - GPS, Gross Carrying Amount	3,643,000
Trade name - GPS, Accumulated Amortization	1,614,000
Trade name - GPS, Net Amount	2,029,000	2,150,000
Trade name [Member] | SMC [Member]
Intangible assets
Trade name - SMC, Estimated Useful Life	Indefinite
Trade name - SMC, Gross Carrying Amount	181,000
Trade name - SMC, Net Amount	$ 181,000	$ 181,000