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Note 4 - Revenue Disaggregation - Disaggregation of Revenue (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Net Revenue | $ 8,118,627 | $ 4,329,459 | $ 18,579,447 | $ 11,729,727
Transferred over Time [Member] |  |  |  |
Net Revenue | 6,271,000 | 2,163,000 | 12,645,000 | 5,697,000
Transferred at Point in Time [Member] |  |  |  |
Net Revenue | 1,848,000 | 2,167,000 | 5,934,000 | 6,033,000
Aerospace [Member] |  |  |  |
Net Revenue | 154,000 | 574,000 | 1,375,000 | 2,063,000
Aerospace [Member] | Transferred over Time [Member] |  |  |  |
Net Revenue | 0 | 0 | 0 | 386,000
Aerospace [Member] | Transferred at Point in Time [Member] |  |  |  |
Net Revenue | 154,000 | 574,000 | 1,375,000 | 1,677,000
Energy, Storage and Transmission [Member] |  |  |  |
Net Revenue | 3,816,000 | 0 | 6,763,000 | 0
Energy, Storage and Transmission [Member] | Transferred over Time [Member] |  |  |  |
Net Revenue | 3,791,000 | 0 | 6,714,000 | 0
Energy, Storage and Transmission [Member] | Transferred at Point in Time [Member] |  |  |  |
Net Revenue | 25,000 | 0 | 49,000 | 0
Industrial [Member] |  |  |  |
Net Revenue | 2,806,000 | 2,756,000 | 7,296,000 | 7,320,000
Industrial [Member] | Transferred over Time [Member] |  |  |  |
Net Revenue | 1,653,000 | 1,551,000 | 4,099,000 | 4,147,000
Industrial [Member] | Transferred at Point in Time [Member] |  |  |  |
Net Revenue | 1,153,000 | 1,205,000 | 3,197,000 | 3,173,000
Research [Member] |  |  |  |
Net Revenue | 1,343,000 | 1,000,000 | 3,145,000 | 2,347,000
Research [Member] | Transferred over Time [Member] |  |  |  |
Net Revenue | 827,000 | 612,000 | 1,832,000 | 1,164,000
Research [Member] | Transferred at Point in Time [Member] |  |  |  |
Net Revenue | $ 516,000 | $ 388,000 | $ 1,313,000 | $ 1,183,000

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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