Organization and Description of Business - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Cash and cash equivalents	$ 48,506				$ 48,506		$ 88,397
Accumulated deficit	808,007				808,007		$ 788,686
Net loss	5,513	$ 13,808	$ 78,531	$ 32,264	19,321	$ 110,795
Cash used in operating activities					43,594	$ 84,250
7.25% Convertible Senior Notes due 2025
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Principal amount	$ 127,100				$ 127,100			$ 168,500