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Note B - Summary of Significant Accounting Policies (Tables)
6 Months Ended
Oct. 31, 2017
Notes Tables  
Property, Plant, and Equipment Useful Life [Table Text Block]
Furniture, fixtures and equipment (in years)  
3
to
7
Leasehold improvements (in years)  
5
to
15
Buildings and improvements (in years)  
18
to
39
Revenue from External Customers by Products and Services [Table Text Block]
    Three Months Ended
October 31,
  Six Months Ended
October 31,
(In thousands)   2017   2016   2017   2016
                 
Sales – used autos   $
111,922
    $
115,392
    $
223,035
    $
228,127
 
Wholesales – third party    
6,115
     
5,529
     
11,452
     
10,946
 
Service contract sales    
7,212
     
7,217
     
14,116
     
13,978
 
Payment protection plan revenue    
5,178
     
5,032
     
10,098
     
9,803
 
                                 
Total   $
130,427
    $
133,170
    $
258,701
    $
262,854