Investments in Affiliates (Details) (USD $)	Jan. 31, 2013	Jan. 31, 2012
Cost-method Investments, Aggregate Carrying Amount	$ 2,951,000	$ 3,013,000
Minerva [Member]
Cost-method Investments, Aggregate Carrying Amount	1,000,000	1,000,000
Visible World [Member]
Cost-method Investments, Aggregate Carrying Amount	551,000	551,000
Other investments [Member]
Cost-method Investments, Aggregate Carrying Amount	$ 1,400,000	$ 1,462,000

This element represents the aggregate carrying amount of all cost-method investments held by the Company. Generally, such investments do not have readily determinable fair values and are not required to be accounted for by the equity method. The carrying amount of such securities equates to cost, adjusted for other-than-temporary impairment. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries, particularly foreign.

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+ Details