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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended
	Apr. 18, 2022	Apr. 12, 2022	Mar. 31, 2022	Nov. 18, 2020	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Common stock, shares authorized (in shares)					80,000,000		80,000,000
Preferred stock, shares authorized (in shares)					10,000,000		10,000,000
Merger With RareGen LLC
Number of common shares issued to RareGen's members				5,550,000
Merger With RareGen LLC | Holdback Shares
Number of common shares issued to RareGen's members			616,666
A&R SVB Warrants Initial Tranche
Class of Warrant or Right, Outstanding (in shares)					250,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 5.14
SVB Warrant Initial Tranche
Class of Warrant or Right, Outstanding (in shares)					100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 3.05
SVB Warrant - Term B and Term C Tranches
Class of Warrant or Right, Outstanding (in shares)					100,000
Other Warrants
Class of Warrant or Right, Outstanding (in shares)					65,572
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 0.02
Warrants to Purchase Common Stock
Class of Warrant or Right, Exercised During Period (in shares)					0	0
Underwritten Public Offering
Stock Issued During Period, Shares, New Issues (in shares)		11,274,510
Shares Issued, Price Per Share (in dollars per share)		$ 5.10
Proceeds from Issuance of Common Stock	$ 54.5
Underwritten Public Offering | Caligan and Paul B. Manning
Value of shares sold	$ 11.0
Underwritten Public Offering | Caligan
Stock Issued During Period, Shares, New Issues (in shares)	1,764,705
Value of shares sold	$ 9.0
Underwritten Public Offering | Mr. Paul B. Manning
Stock Issued During Period, Shares, New Issues (in shares)	392,156
Value of shares sold	$ 2.0

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