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Interest Income And Expense (Tables)
6 Months Ended
Oct. 31, 2011
Interest Income And Expense [Abstract]  
Interest Income And Expense Of Continuing Operations
                 
        (in 000s)      
    Three months ended October 31, Six months ended October 31,
    2011   2010   2011   2010
Interest income:                
Mortgage loans, net $ 5,151 $ 6,525 $ 10,812 $ 12,848
Other   4,770   3,972   9,449   7,806
  $ 9,921 $ 10,497 $ 20,261 $ 20,654
Interest expense:                
Borrowings $ 21,114 $ 20,649 $ 42,243 $ 41,225
Deposits   1,608   1,947   3,264   3,870
FHLB advances   151   396   302   792
  $ 22,873 $ 22,992 $ 45,809 $ 45,887