Leases and Other - Schedule of Estimated Future Minimum Lease Payments Under Non-cancelable Leases Excluding Variable Leases and Variable Non-lease Components (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Remainder of 2021		$ 5,571
2022		19,954
2023		17,858
2024		16,113
2025		14,832
Thereafter		60,906
Total future lease payments		135,234
Less: Amount representing interest		(38,011)
Present value of minimum lease payments		97,223
Current portion		11,058	$ 15,697
Long-term operating lease obligations		86,165	70,150
Remainder of 2021		2,142
2022		8,269
2023		7,750
2024		6,699
2025		6,168
Thereafter		188,955
Total future lease payments		219,983
Less: Amount representing interest		(156,386)
Present value of minimum lease payments	[1]	63,597	23,141
Current portion		3,085
Long-term portion		60,512
Remainder of 2021		7,713
2022		28,223
2023		25,608
2024		22,812
2025		21,000
Thereafter		249,861
Total future lease payments		355,217
Less: Amount representing interest		(194,397)
Total lease liabilities		160,820	$ 108,988
Current portion		14,143
Long-term portion		$ 146,677

[1] The increase in finance lease obligations is primarily due to the commencement of Pursuit’s new Sky Lagoon attraction in Iceland during the first quarter of 2021, which has a 46-year lease term.