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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 149,125	$ (108,958)	$ 12,074	$ (171,185)
Other comprehensive income (loss):
Other post-retirement benefits income, net of tax	0	0	0	3,996
Total other comprehensive income, net of tax	0	0	0	3,996
Comprehensive income (loss)	$ 149,125	$ (108,958)	$ 12,074	$ (167,189)

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