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Property and Equipment (Tables)
9 Months Ended
Jan. 31, 2013
Property, Plant and Equipment [Abstract]  
Schedule of property and equipment
 
             
   
January 31,
   
April 30,
 
($ in thousands)
 
2013
   
2012
 
Land
  $ 726     $ 726  
Building and leasehold improvements
    7,325       7,283  
Furniture and equipment
    11,021       10,955  
      19,072       18,964  
Accumulated depreciation and amortization
    (15,307 )     (15,110 )
Total property and equipment, net
  $ 3,765     $ 3,854