Number of new stock issued during the period.

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-Name Accounting Standards Codification
-Topic 210
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Note 15 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, shares in Thousands		2 Months Ended
	Feb. 07, 2020	Mar. 24, 2020	Dec. 31, 2019	Dec. 31, 2018
Common Stock, Par or Stated Value Per Share			$ 0.18	$ 0.18
Subsequent Event [Member] \| At The Market Offering [Member]
Common Stock, Par or Stated Value Per Share	$ 0.18
Stock to be Issued, Maximum Value	$ 5,000,000
Stock Issued During Period, Shares, New Issues		0
Subsequent Event [Member] \| At The Market Offering [Member] \| Oppenheimer & Co. Inc. [Member]
Stock Issuance Costs, Commission Fee Percent	3.00%