Supplemental Balance Sheet and Income Statement Information - Items reclassified to net income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	$ 62,182	$ 57,594	$ 187,144	$ 169,400
Total income (loss) before income tax	(20,731)	7,891	106,023	(213,688)
Tax expense (benefit)	10,513	12,352	59,976	35,376
Net income (loss)	(31,244)	(4,461)	46,047	(249,064)
Reclassification out of Accumulated Other Comprehensive Income
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	52	52	156	156
Total income (loss) before income tax	(52)	(52)	(156)	(156)
Tax expense (benefit)	(12)	(12)	(36)	(36)
Net income (loss)	$ (40)	$ (40)	$ (120)	$ (120)