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Note B - Sales (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2014
Sales Used Autos [Member] |  |  |
Sales | $ 436,080 | $ 416,060 | $ 385,672
Wholesales Third Party [Member] |  |  |
Sales | 24,917 | 19,961 | 18,886
Service Contract Sales [Member] |  |  |
Sales | 27,323 | 19,758 | 15,833
Payment Protection Plan Revenue [Member] |  |  |
Sales | 18,197 | 16,790 | 14,113
Sales | $ 506,517 | $ 472,569 | $ 434,504

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References 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 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |