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Goodwill (Details) (USD $)
3 Months Ended
Apr. 30, 2013
Balance as of January 31, 2013 $ 871,297
During fiscal year 2014 through April 30, 2013 Effect of foreign currency translation 0
Balance as of April 30, 2013 871,297
U S A [Member]
 
Balance as of January 31, 2013 871,297
During fiscal year 2014 through April 30, 2013 Effect of foreign currency translation 0
Balance as of April 30, 2013 871,297
Brazil [Member]
 
Balance as of January 31, 2013 0
During fiscal year 2014 through April 30, 2013 Effect of foreign currency translation 0
Balance as of April 30, 2013 $ 0