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Stock based compensation (Additional Information) (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 20, 2021 shares	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) shares	Dec. 31, 2021 $ / shares	Feb. 23, 2021 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period				4 years
Stock-based compensation expense \| $		$ 360	$ 5,309	$ (1,478)	$ 29,488
Number of shares authorized to be repurchased							1,023,825
Stock options outstanding		3,045,154		3,045,154
2013 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense \| $		$ 3,700		$ 9,900
2013 Plan [Member] \| Common Class A [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Conversion of stock option granted into an option to purchase common stock	5.87585
2013 Employee Stock Option And Stock Purchase Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based compensation by share based payment arrangement number of shares authorized		58,863,225		58,863,225
Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense \| $		$ 2,000	1,200	$ 4,300	$ 2,400
Total unrecognized compensation cost \| $		14,800		$ 14,800
Stock Options Granted				977,098	0
Weighted average period				2 years 10 months 24 days
Total intrinsic value of options exercised \| $				$ 5,400
Stock Options [Member] \| Common Class A [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based compensation by share based payment arrangement number of shares authorized	19,887,747
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense \| $		2,100	0	4,100	$ 0
Total unrecognized compensation cost \| $		$ 28,200		$ 28,200
Weighted average period				3 years 3 months 18 days
RSUs Vested				350,934
RSUs Forfeited				786,557
RSUs Granted				3,092,919
Purchase price per share \| $ / shares		$ 4.77		$ 4.77		$ 6.30
Restricted Stock Units (RSUs) [Member] \| 2021 Plan [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period				1 year
Restricted Stock Units (RSUs) [Member] \| 2021 Plan [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period				4 years
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense \| $		$ 3,700	$ 4,200	$ 9,900	$ 27,200
Total unrecognized compensation cost \| $		$ 3,100		$ 3,100
RSUs Vested				3,501,705
RSUs Forfeited				0
RSUs Granted				7,003,261
Purchase price per share \| $ / shares		$ 1.42		$ 1.42