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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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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.

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Amount of interest capitalized during the period.

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Accounting policies - Additional Information (Details)		12 Months Ended
Accounting policies - Additional Information (Details)	Jan. 04, 2023 USD ($) shares	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 customer
Interest Capitalized		$ 0	$ 0
PERC Water Corporation \| Subsequent Event [Member]
Ownership interest held	100.00%
Cash	$ 2,400,000
Aerex
Number of Customers \| customer				1
Aerex \| Revenue Benchmark [Member] \| Customer Concentration Risk [Member]
Percentage of total				80.00%
Aerex \| Gross Profit [Member] \| Customer Concentration Risk [Member]
Percentage of total				89.00%
PERC Water Corporation
Ownership interest acquired	39.00%
Cash	$ 7,800,000
PERC Water Corporation \| Subsequent Event [Member]
Ownership interest acquired	39.00%
Shares of the Company's common stock \| shares	368,383
Cash	$ 2,400,000