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Note E - Accrued Liabilities (Tables) | 6 Months Ended
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Oct. 31, 2012
Schedule of Accrued Liabilities [Table Text Block] |
(In thousands) |  | October 31, 2012 |  |  | April 30, 2012 |
Compensation |  | $ | 3,453 |  |  | $ | 5,063 |
Cash overdrafts (see Note B) |  |  | 2,354 |  |  |  | 128 |
Deferred service contract revenue (see Note B) |  |  | 3,134 |  |  |  | 3,036 |
Deferred sales tax (see Note B) |  |  | 2,110 |  |  |  | 1,785 |
Interest |  |  | 223 |  |  |  | 185 |
Other |  |  | 2,922 |  |  |  | 3,152 |
|  | $ | 14,196 |  |  | $ | 13,349 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration