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v3.20.2

Major Customers and Vendors (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 customer item | Jun. 30, 2019 customer item | Jun. 30, 2020 customer item | Jun. 30, 2019 customer item | Dec. 31, 2019
Purchases | Vendor concentration risk |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Number of vendors | item | 2 | 2 | 2 | 2 |
Purchases | Vendor concentration risk | Major vendor one |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Percentage of concentration risk | 16.00% | 21.00% | 19.00% | 27.00% |
Purchases | Vendor concentration risk | Major vendor two |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Percentage of concentration risk | 10.00% | 15.00% | 10.00% | 15.00% |
Net sales | Customer concentration risk |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Number of customers | customer | 2 | 2 | 2 | 2 |
Net sales | Customer one | Customer concentration risk |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Percentage of concentration risk | 29.00% | 27.00% | 29.00% | 26.00% |
Net sales | Customer two | Customer concentration risk |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Percentage of concentration risk | 18.00% | 18.00% | 18.00% | 18.00% |
Net accounts receivable | Customer one | Customer concentration risk |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Percentage of concentration risk |  |  | 22.00% |  | 43.00%
Net accounts receivable | Customer two | Customer concentration risk |  |  |  |  |
Significant Customers and Vendors |  |  |  |  |
Percentage of concentration risk |  |  | 14.00% |  | 12.00%

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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 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118260190&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 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118260190&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 + Details
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