Summary of Significant Accounting Policies - Recent Accounting Pronouncements Adopted (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2022
Summary of Significant Accounting Policies
Retained earnings (accumulated deficit)	$ (1,886,226)	$ (1,841,153)
Cumulative effect period of adoption adjustment | ASU 2020-06
Summary of Significant Accounting Policies
Unamortized debt discount			$ (27,500)
Retained earnings (accumulated deficit)			60,700
Capital in excess of par value			$ (81,900)