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Note 19 - Asset Acquisition (Details Textual) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Mar. 07, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Payments to Acquire Buildings | $ 1,300 | $ 1,269 |

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- Definition The cash outflow for acquisition of buildings (properties) whether for investment or use. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBuildings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration