Supplemental Balance Sheet and Income Statement Information - Items reclassified to net income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	$ 61,730	$ 53,639
Total income (loss) before income tax	84,075	(160,997)
Tax expense (benefit)	23,015	13,671
Net income (loss)	61,060	(174,668)
Reclassification out of Accumulated Other Comprehensive Income
Supplemental Balance Sheet and Income Statement Information
General and administrative expenses	52	52
Total income (loss) before income tax	(52)	(52)
Tax expense (benefit)	(12)	(12)
Net income (loss)	$ (40)	$ (40)