Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net income (loss)	$ 21,928	$ (25,014)	$ 32,744	$ (37,285)
Other comprehensive income (loss):
Unrealized loss on note receivable	(184)	(846)	(316)	(846)
Change in liability of pension plans	(3,504)	138	(3,694)	(59)
Total comprehensive income (loss)	$ 18,240	$ (25,722)	$ 28,734	$ (38,190)