Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 110,144	$ 125,148
Restricted cash	2,455	12,569
Accounts receivable and contract assets, net of allowance for credit losses of $238 and $332, respectively	49,991	62,922
Other current assets	16,556	17,380
Total current assets	179,146	218,019
Property and equipment, at cost (note 4)	1,161,803	1,091,943
Accumulated depreciation	(354,318)	(325,196)
Property and equipment, net	807,485	766,747
Investments in affiliates, accounted for using the equity method (note 5)	108,786	99,213
Intangible assets not subject to amortization:
Goodwill	175,764	175,764
Franchise rights	123,703	123,703
Intangible assets, Total	299,467	299,467
Other assets, net	128,962	120,884
Total assets	1,523,846	1,504,330
Current liabilities:
Accounts payable and accrued liabilities	63,711	73,096
Deferred revenue and refundable tickets	111,851	111,985
Current portion of debt (note 6)	104,193	42,153
Other current liabilities	6,905	6,439
Total current liabilities	286,660	233,673
Long-term debt (note 6)	512,927	527,116
Finance lease liabilities (note 7)	103,845	103,586
Deferred income tax liabilities (note 9)	43,516	50,415
Pension liability (note 8)	6,558	15,222
Other noncurrent liabilities	34,116	33,676
Total liabilities	987,622	963,688
Equity:
Preferred stock, $.01 par value. Authorized 50,000,000 shares; zero shares issued at December 31, 2024 and December 31, 2023
Additional paid-in capital	1,112,551	1,089,625
Accumulated other comprehensive earnings (loss), net of taxes	(3,352)	(7,271)
Retained earnings (deficit)	(585,644)	(554,376)
Total stockholders' equity	524,179	528,597
Noncontrolling interests in equity of subsidiaries	12,045	12,045
Total equity	536,224	540,642
Commitments and contingencies (note 13)
Total liabilities and equity	1,523,846	1,504,330
Series A common stock
Equity:
Common stock value	103	103
Series B common stock
Equity:
Common stock value	10	10
Series C common stock
Equity:
Common stock value	$ 511	$ 506