Related-Party Transactions - Subscription Agreements (Details) - Subscription Agreements $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) director shares
Related Party Transaction [Line Items]
Number of directors | director	5
Sharon Chandha [Member]
Related Party Transaction [Line Items]
Issuance of Common Stock from at the market offerings, net of offering costs (in shares) | shares	3,125
Proceeds from issuance of stocks | $	$ 0.1
Par Chadha [Member]
Related Party Transaction [Line Items]
Issuance of Common Stock from at the market offerings, net of offering costs (in shares) | shares	7,936
Proceeds from issuance of stocks | $	$ 0.2
Martin Akins [Member]
Related Party Transaction [Line Items]
Issuance of Common Stock from at the market offerings, net of offering costs (in shares) | shares	3,174
Proceeds from issuance of stocks | $	$ 0.1
J. Coley Clark [Member]
Related Party Transaction [Line Items]
Issuance of Common Stock from at the market offerings, net of offering costs (in shares) | shares	3,968
Proceeds from issuance of stocks | $	$ 0.1
John Rexford [Member]
Related Party Transaction [Line Items]
Issuance of Common Stock from at the market offerings, net of offering costs (in shares) | shares	1,984
Proceeds from issuance of stocks | $	$ 0.1