Stock-based Awards - Schedule of Stock-based Compensation Cost Relating to Stock Options, Restricted Stock Awards, and RSUs (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 20,395	$ 23,077	$ 36,462
Amount capitalized to internal-use software	1,296	1,322	1,670
Total stock-based compensation cost	21,691	24,399	38,132
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	227	556	1,284
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	6,958	8,258	12,971
Technology and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	4,489	4,966	8,095
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 8,721	$ 9,297	$ 14,112

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

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