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Note 4 - Supplementary Cash Flow Information (Tables) | 3 Months Ended
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Jul. 31, 2016
Notes Tables |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] |
|  | Three Months Ended July 31, |
($ in thousands) |  | 2016 |  |  | 2015 |
State and local income tax payments |  | $ | 375 |  |  | $ | 93 |
Federal income tax payments to the Parent |  | $ | 268 |  |  | $ | - |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration