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Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net loss	$ (131,891)	$ (307,045)	$ (64,761)
Other comprehensive income (loss):
Actuarial gain (loss) on defined benefit plans	22,345	(9,356)	(3,521)
Plan curtailment / amendment credit recognized	0	5,510	0
Reclassified net remeasurement (loss) gains	(244)	104	0
Amortization of prior service credit	(249)	0	0
Income taxes on pension	0	(926)	0
Other comprehensive income (loss)	21,852	(4,668)	(3,521)
Comprehensive loss	$ (110,039)	$ (311,713)	$ (68,282)

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