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Stockholders' Equity - Equity Offerings (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Common Stock
Equity offerings
Issuance of common stock, net of issuance costs, shares	9,822,930	78,550
2022 Sales Agreement
Equity offerings
Common stock available for sale under agreement		$ 100.0
2022 Sales Agreement | Common Stock
Equity offerings
Issuance of common stock, net of issuance costs, shares	9,822,930		1,953,854
Price per share	$ 3.01		$ 2.22
Aggregate net proceeds from stock sale	$ 28.7		$ 4.2
Common stock available for sale under agreement	$ 66.0

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