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Stockholders' Equity (Tables)
9 Months Ended
Jan. 31, 2015
Stockholders' Equity Attributable to Parent [Abstract]  
Schedule of Stock by Class [Table Text Block]
 
2015
2014
Balance, May 1
5,615,750

5,265,750

Restricted stock activity

350,000

Balance, January 31
5,615,750

5,615,750