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Note B - Summary of Significant Accounting Policies (Tables)
3 Months Ended
Jul. 31, 2015
Notes Tables  
Property, Plant, and Equipment Useful Life [Table Text Block]
Furniture, fixtures and equipment
3
to
7 years
Leasehold improvements 5
to
15 years
Buildings and improvements
18
to
39 years
Revenue from External Customers by Products and Services [Table Text Block]
  Three Months Ended
July 31,
(In thousands)   2015   2014
Sales – used autos   $ 108,710     $ 101,123  
Wholesales – third party     6,218       4,796  
Service contract sales     6,812       3,995  
Payment protection plan revenue     5,855       3,545  
Total   $ 127,595     $ 113,459