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Supplementary Cash Flow Information
9 Months Ended
Jan. 31, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplementary Cash Flow Information
Note 4 - Supplementary Cash Flow Information:
             
   
Nine Months Ended January 31,
 
($ in thousands)
 
2015
   
2014
 
State and local income tax payments
  $ (299 )   $ (97 )
Federal income tax payments to the Parent
  $ (2,560 )   $ (1,054 )