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Receivables, Net (Details) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2013
Apr. 30, 2012
Media Services operations:    
Media Services Operations Gross $ 47,072 $ 41,125
Less allowance for doubtful accounts (172) (581)
Media services operations,net 46,900 40,544
Real estate operations and corporate:    
Mortgage notes and other receivables 47 55
Real estate operations and corporate,net 47 55
Media Services, Subscription Fulfillment Services [Member]
   
Media Services operations:    
Accounts Receivables Media Services Operations Gross 14,192 11,989
Media Services, Newsstand Distribution Services, Net Of Estimated Returns [Member]
   
Media Services operations:    
Accounts Receivables Media Services Operations Gross 29,010 26,438
Media Services, Product Services and Other [Member]
   
Media Services operations:    
Accounts Receivables Media Services Operations Gross $ 3,870 $ 2,698