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Related party transactions (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |  |  |
Accounts payable outstanding | $ 766,775 |  | $ 766,775 |  | $ 163,947
PERC Water Corporation |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Purchases of services | 641,000 | $ 129,000 | 1,480,000 | $ 285,000 |
Accounts payable outstanding | 767,000 |  | 767,000 |  | $ 164,000
Amount of expense related to sublease agreement | $ 24,000 | $ 24,000 | $ 48,000 | $ 29,000 |

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References No definition available. + Details
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