The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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

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

Note 19 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common Stock, Dividends, Per Share, Declared			$ 0.30	$ 1.20	$ 0.80	$ 0.80
Payments to Acquire Property, Plant, and Equipment, Total				$ 22,526	$ 65,770	$ 37,112
Scenario, Forecast [Member]
Common Stock, Dividends, Per Share, Declared		$ 0.40
Payments to Acquire Property, Plant, and Equipment, Total	$ 53,000