Summary of Significant Accounting Policies and Basis of Presentation - Adoption of Accounting Pronouncement, Affected Line Items within the Statements of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 01, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Non-cash operating lease expense		$ 551	$ 78
Deferred rent			0
Operating lease liabilities		46	(93)
Net cash used in operating activities		(19,151)	(14,872)
Supplemental disclosure of non-cash activities:
Lease liability obtained in exchange for right-of-use assets		$ 6,855	$ 7,823
As Previously Reported
Cash flows from operating activities:
Non-cash operating lease expense				$ 0
Deferred rent				(15)
Operating lease liabilities				0
Net cash used in operating activities				(14,872)
Supplemental disclosure of non-cash activities:
Lease liability obtained in exchange for right-of-use assets				$ 0
Adjustments
Cash flows from operating activities:
Non-cash operating lease expense	$ 78
Deferred rent	15
Operating lease liabilities	(93)
Net cash used in operating activities	0
Supplemental disclosure of non-cash activities:
Lease liability obtained in exchange for right-of-use assets	$ 7,823