Stockholders' Equity (Deficit) - At The Market Issuances (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended			24 Months Ended
	Nov. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Stockholders' Equity (Deficit)
Number of shares sold by the entity				39,607
At-The-Market Issuance Sales Agreement
Stockholders' Equity (Deficit)
Number of shares sold by the entity		1,126,733	1,087,126
Value of shares sold by the entity		$ 137.4
Net proceeds after deducting commissions and other transactions costs		$ 134.8
At-The-Market Issuance Sales Agreement | 2021 Sales Agreement
Stockholders' Equity (Deficit)
Number of shares sold by the entity		738,900	497,043		1,235,943
Value of shares sold by the entity		$ 159.1			$ 199.9
Net proceeds after deducting commissions and other transactions costs		155.9			195.8
Remaining reserved amount under shelf registration		0.0			$ 0.0
Cowen & Co. LLC | Maximum | At-The-Market Issuance Sales Agreement
Stockholders' Equity (Deficit)
Maximum aggregate offering price	$ 200.0	$ 200.0