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Note 13 - Goodwill and Goodwill Impairment (Details Textual) | 6 Months Ended
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Jun. 30, 2017
Number of Reporting Units | 2

X
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration