Supplemental Cash Flow Information - Change in certain working capital accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Accounts receivable	$ (10,443)	$ (26,875)	$ (31,624)
Other current assets	(4,630)	5,653	12,488
Accounts payable	(3,536)	7,313	18,534
Accrued employee compensation and benefits	15,726	(24,080)	4,073
Accrued interest	943	(3,886)	18,459
Other accrued liabilities	(13,509)	4,991	2,336
Unearned revenue	(6,002)	(3,115)	(7,080)
Other, net	5,176	4,199	(21,407)
Total	$ (16,275)	$ (35,800)	$ (4,221)