For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Period Type:	duration

Note 11 - Concentrations (Details Textual) - Customer Concentration Risk [Member]	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue Benchmark [Member]
Number of Customers	1	1
Revenue Benchmark [Member] \| Domestic Distributor [Member]
Concentration Risk, Percentage	39.00%	52.00%
Revenue Benchmark [Member] \| International Distributor [Member]
Concentration Risk, Percentage	15.00%
Accounts Receivable [Member]
Concentration Risk, Percentage			77.00%
Accounts Receivable [Member] \| Domestic Distributor [Member]
Concentration Risk, Percentage	59.00%
Accounts Receivable [Member] \| International Distributor [Member]
Concentration Risk, Percentage	10.00%