Note B - Sales (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2016	Jul. 31, 2015
Sales Used Autos [Member]
Sales	$ 112,735	$ 110,647
Wholesales Third Party [Member]
Sales	5,417	5,619
Service Contract Sales [Member]
Sales	6,761	6,812
Payment Protection Plan Revenue [Member]
Sales	4,771	4,517
Sales	$ 129,684	$ 127,595

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueGoodsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration