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v3.22.1

Revenue, Contract Assets and Contract Liabilities (Details) $ in Thousands | 3 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | ---
Dec. 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) project | Dec. 31, 2020 USD ($) | Dec. 31, 2017 USD ($)
Revenues | $ 54 | $ 190 | $ 363 | $ 0 | $ 0 | $ 0 | $ 0 | $ 607 | $ 0 |
Cost of goods sold |  |  |  |  |  |  |  | 1,059 | 279 |
Cost of goods sold from the ExxonMobil project | 712 |  |  | 450 |  |  |  | 712 | 450 |
Reversal of accruals for product warranties that expired |  |  |  |  |  |  |  |  |  | $ 171
Cost of goods sold, warranty adjustment |  |  |  |  |  |  |  | 86 |  |
Contract assets, current | 39 |  |  | 92 |  |  |  | 39 | 92 |
Contract liabilities | $ 84 |  |  | $ 94 |  |  |  | 84 | $ 94 |
Cost of goods sold, estimated loss upon completion |  |  |  |  |  |  |  | $ 433 |  |
Year 2016 and 2017 |  |  |  |  |  |  |  |  |  |
Number of projects to expire product warranties | project |  |  |  |  |  |  |  | 7 |  |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, 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 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 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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