Note 16 - Asset Acquisition (Details Textual) - USD ($) $ in Thousands		3 Months Ended
Mar. 07, 2018	Mar. 31, 2019	Mar. 31, 2018
Payments to Acquire Buildings	$ 1,300		$ 1,269

The cash outflow for acquisition of buildings (properties) whether for investment or use.

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=118932676&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireBuildings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration