Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Stock based compensation (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
Stock based compensation (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Sep. 30, 2022	Sep. 30, 2022	Jun. 17, 2021	May 27, 2021
Stock based compensation
Stock awards vesting period			4 years
Stock based compensation expense		$ 2,786	$ 7,937
2021 Incentive Plan
Stock based compensation
Shares authorized for issuance		0	0
2021 Incentive Plan \| Stock Options
Stock based compensation
Shares authorized for issuance				5,481,735
Additional shares authorized for issuance	2,750,276
Shares available for grant				5,640,711
Stock reserved for issuance upon the exercise of previously granted stock options				158,976
Employee Stock Purchase Plan 2021
Stock based compensation
Shares authorized for issuance					564,071
Employee Stock Purchase Plan 2021 \| General and administrative expense
Stock based compensation
Stock based compensation expense		$ 1,419	$ 3,728
Employee Stock Purchase Plan 2021 \| Research and development expenses
Stock based compensation
Stock based compensation expense		$ 1,367	$ 4,209
Employee Stock Purchase Plan 2021 \| Stock Options
Stock based compensation
Additional shares authorized for issuance	550,055