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Note 11 - Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Sep. 30, 2015
Supplemental Cash Flow Elements [Abstract] |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] |
(In thousands) |  | Three Months Ended September 30 |
|  | 2015 |  |  | 2014 |
Cash payments: |  |  |  |  |  |  |  |
Interest |  | $ | 13 |  |  | $ | 13 |
Income taxes |  | $ | 74 |  |  | $ | 4 |

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

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