Supplemental Balance Sheet and Income Statement Information - Items reclassified to net income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	$ 62,154	$ 63,232	$ 123,905	$ 124,962
Total income (loss) before income tax	2,525	42,679	9,567	126,754
Tax expense (benefit)	15,554	26,448	31,598	49,463
Net income (loss)	(13,029)	16,231	(22,031)	77,291
Reclassification out of Accumulated Other Comprehensive Income
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	52	52	105	104
Total income (loss) before income tax	(52)	(52)	(105)	(104)
Tax expense (benefit)	(12)	(12)	(24)	(24)
Net income (loss)	$ (40)	$ (40)	$ (81)	$ (80)