Unaudited Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Operating Revenues	$ 68,916	$ 76,900	$ 201,553	$ 206,428
Costs and Expenses:
Operating	52,907	40,142	150,526	116,381
Administrative and general	11,019	12,300	33,825	37,636
Lease expense	364	651	1,331	2,069
Depreciation and amortization	12,928	13,462	38,749	40,799
Costs and expenses	77,218	66,555	224,431	196,885
Gains (Losses) on Asset Dispositions and Impairments, Net	1,821	(512)	1,857	3,352
Operating (Loss) Income	(6,481)	9,833	(21,021)	12,895
Other Income (Expense):
Interest income	358	340	1,396	1,222
Interest expense	(10,127)	(9,536)	(30,626)	(27,060)
Loss on debt extinguishment	0	(2,004)	0	(2,004)
Derivative gains (losses), net	67	0	(372)	0
Foreign currency (losses) gains, net	(1,717)	571	(2,357)	(857)
Other, net	29	0	(66)	0
Nonoperating income expense	(11,390)	(10,629)	(32,025)	(28,699)
Loss Before Income Tax (Benefit) Expense and Equity in Earnings of 50% or Less Owned Companies	(17,871)	(796)	(53,046)	(15,804)
Income Tax (Benefit) Expense	(513)	2,360	(270)	2,421
Loss Before Equity in Earnings of 50% or Less Owned Companies	(17,358)	(3,156)	(52,776)	(18,225)
Equity in Earnings of 50% or Less Owned Companies	1,012	2,273	878	3,182
Net Loss	$ (16,346)	$ (883)	$ (51,898)	$ (15,043)
Net Loss Per Share:
Basic	$ (0.59)	$ (0.03)	$ (1.88)	$ (0.56)
Diluted	$ (0.59)	$ (0.03)	$ (1.88)	$ (0.56)
Weighted Average Common Stock and Warrants Outstanding:
Basic	27,772,733	27,181,754	27,615,699	27,048,656
Diluted	27,772,733	27,181,754	27,615,699	27,048,656