Summary of Significant Accounting Policies - Stock-based compensation cost (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 03, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation cost	$ 5,400	$ 5,579	$ 19,169	$ 23,565
Cost of revenue, excluding depreciation and amortization
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation cost		870	3,028	2,788
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation cost		960	3,026	4,829
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation cost		3,911	9,251	15,052
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation cost		$ (162)	$ 3,864	$ 896