Stock-Based Compensation and Stockholders' Equity - Schedule of Compensation Expense Allocation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (benefit)	$ 1,921	$ 580	$ 3,892	$ (5,484)
Cost of services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (benefit)	83	70	164	(246)
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (benefit)	794	213	1,626	(319)
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (benefit)	$ 1,044	$ 297	$ 2,102	$ (4,919)