Annual report pursuant to Section 13 and 15(d)

Investments in Affiliates (Details)

v2.4.0.6
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