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v3.20.2

Note 2 - Segment Information (Details Textual) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Number of Reportable Segments |  |  | 3 |  |
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Number of Customers |  |  |  |  | 0
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Electric [Member] |  |  |  |  |
Number of Customers |  |  |  |  | 1
Concentration Risk, Percentage |  |  |  |  | 11.90%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Manufacturing [Member] |  |  |  |  |
Number of Customers |  |  |  |  | 5
Concentration Risk, Percentage |  |  |  |  | 54.00%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Manufacturing [Member] | Customer that Manufactures and Sells Recreational Vehicles [Member] |  |  |  |  |
Number of Customers |  |  |  |  | 1
Concentration Risk, Percentage |  |  |  |  | 23.80%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Manufacturing [Member] | Customer that Manufactures and Sells Lawn and Garden Equipment [Member] |  |  |  |  |
Number of Customers |  |  |  |  | 1
Concentration Risk, Percentage |  |  |  |  | 11.10%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Plastics [Member] |  |  |  |  |
Number of Customers |  |  |  |  | 2
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Plastics [Member] | Customer One [Member] |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  | 25.30%
Revenue, Segment Benchmark [Member] | Customer Concentration Risk [Member] | Plastics [Member] | Customer Two [Member] |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  | 20.40%
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | UNITED STATES |  |  |  |  |
Concentration Risk, Percentage | 98.90% | 98.50% | 99.00% | 98.80% |

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 2: 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 3: 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=121572278&loc=d3e13531-108611 Reference 4: 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=121572278&loc=d3e13537-108611 Reference 5: 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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