Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Future minimum lease payments (Details)

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Commitments and Contingencies - Future minimum lease payments (Details) (USD $)
Apr. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
2014 $ 295,000
2015 301,000
2016 293,000
2017 68,000
Thereafter   
Total $ 957,000