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Supplemental Schedule of Cash Flow Information (Tables)
 12 Months Ended
Apr. 30, 2013
Supplemental Cash Flow Elements [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Supplemental cash flow information is as follows (in thousands):
 
 
 
Year Ended April 30,
 
 
 
2013
 
2012
 
Supplemental cash flow information:
 
 
 
 
 
 
 
Cash paid for interest
 
$
-
 
$
-
 
Cash paid for income taxes
 
 
-
 
 
-
 
 
 
 
 
 
 
 
 
Supplemental disclosure of non-cash investing and financing activities:
 
 
 
 
 
 
 
Purchases of property and equipment included in accounts payable
 
 
-
 
 
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