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v3.21.2

Sales, Contract Assets and Contract Liabilities (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Revenue | $ 190,000 | $ 0 | $ 553,000 | $ 0 |
Cost of goods sold | 278,000 | $ 180,000 | 1,008,000 |  |
Cost of goods sold, warranty adjustment |  |  | 86,000 |  |
Accrual adjustments |  |  | 8,000 |  |
Contract assets | 0 |  | 0 |  | $ 92,000
Contract liabilities | 0 |  | 0 |  | $ 94,000
Cost of goods sold, estimated loss upon completion |  |  | 712,000 |  |
Year 2016 and 2017 |  |  |  |  |
Cost of goods sold, warranty adjustment |  |  |  | $ 153,000 |
Number of projects to expire product warranties |  |  |  | 6 |
Burner Contract |  |  |  |  |
Cost of goods sold, loss related to the delivery and sale | 96,000 |  |  |  |
Cost of goods sold, estimated loss upon completion | $ 182,000 |  | $ 390,000 |  |

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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130533-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
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