Receivables (Schedule Of Loans Receivable) (Details) - USD ($) $ in Thousands	Jul. 31, 2016	Apr. 30, 2016	Jul. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	$ 159,806	$ 210,127	$ 156,965
Accounts Receivable, Gross, Noncurrent	56,514	60,407	72,427
Emerald Advance lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	24,857	25,092	20,321
Accounts Receivable, Gross, Noncurrent	111	869	598
Financing Receivable, Gross	24,968
Loans to franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	47,905	50,000	56,277
Accounts Receivable, Gross, Noncurrent	46,461	46,284	57,792
Cash Back® receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross, Current	4,515	37,663	2,777
Accounts Receivable, Gross, Noncurrent	$ 0	$ 0	$ 0