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Note 10 - Significant Customers - Concentration Risk by Risk Factor of Sales Revenue and Accounts Receivable (Details) - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017
Sales Revenue, Net [Member]
Concentration risk, percentage			16.10%
Sales Revenue, Net [Member] | Customer A [Member]
Concentration risk, percentage		[1]	16.10%
Accounts Receivable [Member]
Concentration risk, percentage	26.30%		31.30%
Accounts Receivable [Member] | Customer A [Member]
Concentration risk, percentage		[1]	20.30%
Accounts Receivable [Member] | Customer B [Member]
Concentration risk, percentage	14.50%		11.00%
Accounts Receivable [Member] | Customer C [Member]
Concentration risk, percentage	11.80%
[1] Sales to Customer A (Starin Marketing) in 2018 did not exceed 10% of the revenue. Customer A ceased to be a ClearOne distributor in 2018.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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