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Note G - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Jul. 31, 2019
Apr. 30, 2019
Reported Value Measurement [Member]    
Cash $ 1,640 $ 1,752
Finance receivables, net 431,610 415,486
Accounts payable 13,859 13,659
Debt facilities 158,677 152,918
Estimate of Fair Value Measurement [Member]    
Cash 1,640 1,752
Finance receivables, net 345,079 334,147
Accounts payable 13,859 13,659
Debt facilities $ 158,677 $ 152,918