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Receivables (Schedule Of Loans Receivable) (Details) (USD $)
In Thousands
Jul. 31, 2011
Apr. 30, 2011
Emerald Advance Lines Of Credit [Member]
   
Short-term $ 30,699 $ 31,645
Long-term 18,539 21,619
Receivables, net 49,238 53,264
Tax Client Receivables - RALs [Member]
   
Short-term 1,971 2,412
Long-term 5,271 5,855
Receivables, net 7,242 8,267
Loans To Franchisees [Member]
   
Short-term 62,313 62,181
Long-term 123,962 110,420
Receivables, net $ 186,275 $ 172,601