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Summary of Significant Accounting Policies - Basis of Presentation and Going Concern (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 08, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Accounting Policies [Abstract]
Voting rights stock held	85.30%
Cash and cash equivalents		$ 56,747		$ 75,585
Held-to-maturity securities		34,819		45,159
Accumulated deficit		(857,380)		$ (831,872)
Net cash used in operating activities		(28,289)	$ (33,810)
Net income (loss)		$ (25,508)	$ (63,312)
Proceeds from divestiture of businesses, net	$ 153,285

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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