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Note G - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Jan. 31, 2017
Apr. 30, 2016
Reported Value Measurement [Member]    
Cash $ 254 $ 602
Finance receivables, net 363,536 334,793
Accounts payable 10,544 12,313
Revolving credit facilities and notes payable 118,785 107,902
Estimate of Fair Value Measurement [Member]    
Cash 254 602
Finance receivables, net 292,343 268,926
Accounts payable 10,544 12,313
Revolving credit facilities and notes payable $ 118,785 $ 107,902