Accumulated Other Comprehensive Income (Loss) - Schedule of reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss)
Interest expense	$ (4,060)	$ (6,151)	$ (16,245)	$ (13,220)
Net loss resulting from early retirement of debt	394		14,143
Pension settlement	201	376	615	1,364
Interest and investment income	2,224		2,776	474
Provision for (benefit from) income taxes	(474)	1,082	(1,424)	(1,301)
Net income (loss)	181,007	89,143	860,443	110,967
Reclassification out of Accumulated Other Comprehensive Income | Derivative instruments
Accumulated Other Comprehensive Income (Loss)
Interest expense		(336)	(112)	(1,591)
Net loss resulting from early retirement of debt			(1,428)
Provision for (benefit from) income taxes	0	0	0	0
Net income (loss)		(336)	(1,540)	(1,591)
Reclassification out of Accumulated Other Comprehensive Income | Pension, postretirement and other post-employment benefits
Accumulated Other Comprehensive Income (Loss)
Amortization of actuarial gains (losses), net	571	(590)	1,544	(1,772)
Amortization of prior service credits	38	52	111	139
Provision for (benefit from) income taxes	0	0	0	0
Net income (loss)	810	(162)	2,270	(269)
Reclassification out of Accumulated Other Comprehensive Income | Available-for-sale securities
Accumulated Other Comprehensive Income (Loss)
Interest and investment income		(1)	(182)	25
Provision for (benefit from) income taxes	$ 0	0	0	0
Net income (loss)		$ (1)	$ (182)	$ 25