Receivables (Narrative) (Details) - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017
Loans to franchisees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans more than 90 days past due	$ 1,100	$ 2,300
Instant Refund® receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balances more than 60 days old	19	$ 39
Instant Refund® receivables | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loan balances	2,600
Instant Refund® receivables | 2016 and prior
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loan balances	$ 1,200