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Note C - Finance Receivables, Net - Components of Finance Receivables (Details) - USD ($)
$ in Thousands
Jan. 31, 2018
Apr. 30, 2017
Jan. 31, 2017
Apr. 30, 2016
Gross contract amount $ 575,536 $ 545,916    
Less unearned finance charges (77,884) (79,062)    
Principal balance 497,652 466,854 $ 475,354  
Less allowance for credit losses (117,268) (109,693) (111,818) $ (102,485)
Finance receivables, net $ 380,384 $ 357,161 $ 363,536 $ 334,793