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Note 21 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Liabilities, Fair Value Disclosure, Recurring | $ 0 | $ 0

X
- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureRecurring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant