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Commitments and Contingencies (Tables)
12 Months Ended
Apr. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
Future minimum lease payments due each fiscal year are as follows (in thousands):
 
2014
 
164,344
 
 
 
 
 
Total
 
164,344