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UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 58,082	$ 8,543
Other comprehensive income (loss), net of income taxes:
Change in unfunded pension plan obligation liability	91	(367)
Other	24	24
Comprehensive income (loss)	$ 58,197	$ 8,200

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