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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Secured Uncommitted Credit Line During the first quarter of 2023, the Company entered into an uncommitted demand secured credit line with a financial institution for up to $150.0 million (the "Credit Line"). Although as of March 1, 2023 the Company has not drawn from the Credit Line, it expects to do so in the future, including to fund, in part, the repayment of the 2023 Notes. The Credit Line is secured primarily by our portfolio of marketable securities, which is primarily comprised of corporate and U.S. government agency and municipal debt securities, and it contains collateral maintenance requirements. Pursuant to the terms of the Credit Line, the lender may terminate the Credit Line and/or demand full or partial payment of amounts borrowed thereunder at any time.