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Receivables (Schedule Of Loans Receivable) (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2011
Apr. 30, 2011
Emerald Advance Lines Of Credit [Member]
   
Short-term $ 29,929 $ 31,645
Long-term 17,749 21,619
Receivables, net 47,678 53,264
Tax Client Receivables - RALs [Member]
   
Short-term 1,933 2,412
Long-term 5,260 5,855
Receivables, net 7,193 8,267
Loans To Franchisees [Member]
   
Short-term 67,594 62,181
Long-term 130,280 110,420
Receivables, net $ 197,874 $ 172,601