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Note B - Summary of Significant Accounting Policies (Tables)
6 Months Ended
Oct. 31, 2018
Notes Tables  
Property, Plant, and Equipment Useful Life [Table Text Block]
Furniture, fixtures and equipment (years)
3
to
7
Leasehold improvements (years)
5
to
15
Buildings and improvements (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)   2018   2017   2018   2017
Sales – used autos   $
126,286
    $
111,922
    $
251,510
    $
223,035
 
Wholesales – third party    
6,693
     
6,115
     
12,745
     
11,452
 
Service contract sales    
7,727
     
7,212
     
15,055
     
14,116
 
Payment protection plan revenue    
5,705
     
5,178
     
11,202
     
10,098
 
Total   $
146,411
    $
130,427
    $
290,512
    $
258,701