Accounting policies - Additional Information (Details) - USD ($) $ in Thousands		1 Months Ended
Jan. 04, 2023	Jan. 31, 2023
PERC Water Corporation
Ownership interest held	100.00%
PERC Water Corporation
Ownership interest acquired	39.00%	39.00%
Shares of the Company's common stock	368,383
Cash	$ 2,400	$ 7,800
Common stock value	$ 5,360

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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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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Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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