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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income	$ 712,486	$ 174,979	$ 80,925
Defined benefit pension plans
Actuarial gain (loss), net of tax	46	5,104	(3,466)
Amortization of actuarial (gain) loss, net of tax	(15)	603	(131)
Effects of Settlements, net of tax	0	4,669	1,001
Stranded tax effects of pension plan termination	0	38,794	0
Other comprehensive income (loss), net of tax	31	49,170	(2,596)
Comprehensive income	$ 712,517	$ 224,149	$ 78,329

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