Accumulated Other Comprehensive Loss - Reclassifications from Accumulated Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other (income) expense, net	$ (1,936)	$ (1,633)
Income (loss) before income taxes	(6,819)	660,461
Provision for (benefit from) income taxes	2,782	(27,006)
Net income (loss)	(4,037)	633,455
Amortization of actuarial loss and net transition obligation | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other (income) expense, net	214	132
Accumulated defined benefit plans adjustment including portion attributable to noncontrolling interest | Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before income taxes	214	132
Provision for (benefit from) income taxes	(47)	(33)
Net income (loss)	$ 167	$ 99