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
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Note 2 - Summary of Significant Accounting Policies - Concentrations (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue Benchmark \| Customer A
Concentrations
Concentration Risk, Percentage	29.00%		31.00%
Revenue Benchmark \| Customer B
Concentrations
Concentration Risk, Percentage	19.00%		18.00%
Revenue Benchmark \| Customer C
Concentrations
Concentration Risk, Percentage	16.00%		10.00%
Revenue Benchmark \| Total Customer Base
Concentrations
Concentration Risk, Percentage	64.00%		59.00%	71.00%
Accounts Receivable. \| Total Customer Base
Concentrations
Concentration Risk, Percentage		86.00%		63.00%