Supplemental Balance Sheet and Income Statement Information - Items reclassified to net income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	$ 63,976	$ 62,182	$ 187,881	$ 187,144
Total income (loss) before income tax	(22,969)	(20,731)	(13,402)	106,023
Tax expense (benefit)	10,118	10,513	41,716	59,976
Net income (loss)	(33,087)	(31,244)	(55,118)	46,047
Reclassification out of Accumulated Other Comprehensive Income
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	52	52	157	156
Total income (loss) before income tax	(52)	(52)	(157)	(156)
Tax expense (benefit)	(12)	(12)	(36)	(36)
Net income (loss)	$ (40)	$ (40)	$ (121)	$ (120)