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Note C - Finance Receivables, Net - Components of Finance Receivables (Details) - USD ($)
$ in Thousands
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2017
Gross contract amount $ 728,841 $ 631,681    
Less unearned finance charges (107,659) (88,353)    
Principal balance 621,182 543,328    
Less allowance for credit losses (155,041) (127,842) $ (117,821) $ (109,693)
Finance receivables, net $ 466,141 $ 415,486 $ 383,617 $ 357,161