Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income (loss)	$ 95,621	$ (22,193)	$ (129,660)
Other comprehensive income (loss):
Unrealized gain (loss) on note receivable	213	(496)	0
Change in supplemental executive retirement plan pension liability	(525)	4,561	(763)
Change in pension plan minimum liability	(2,998)	1,843	4,235
Total comprehensive income (loss)	$ 92,311	$ (16,285)	$ (126,188)