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Note G - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Apr. 30, 2018
Apr. 30, 2017
Reported Value Measurement [Member]    
Cash $ 1,022 $ 434
Finance receivables, net 383,617 357,161
Accounts payable 13,609 11,224
Debt facilities 152,367 117,944
Estimate of Fair Value Measurement [Member]    
Cash 1,022 434
Finance receivables, net 308,384 287,115
Accounts payable 13,609 11,224
Debt facilities $ 152,367 $ 117,944