Noncontrolling Interests- Redeemable and Non-redeemable - Narrative (Details)	12 Months Ended
	Dec. 31, 2023	Nov. 03, 2017
Redeemable Noncontrolling Interest [Line Items]
Percentage of non equity ownership related redeemable noncontrolling interests	56.40%
Esja Attractions ehf.
Redeemable Noncontrolling Interest [Line Items]
Percentage of controlling interest acquired		54.50%
Percentage of non equity ownership related redeemable noncontrolling interests	56.40%
Redeemable noncontrolling interest conditions	The minority Esja shareholders have the right to sell (or “put”) their Esja shares to us based on a multiple of 5.0x EBITDA as calculated on the trailing 12 months from the most recently completed quarter before the put option exercise. The put option is only exercisable after August 2022 (the “Reference Date”), and in the event the FlyOver Iceland attraction has earned a minimum of €3.25 million in unadjusted EBITDA during the most recent fiscal year and during the trailing 12-month period prior to exercise (the “Put Option Condition”). The put option is exercisable during a period of 12 months following the Reference Date (the “Option Period”) if the Put Option Condition has been met. If the Put Option Condition has not been met during the first Option Period, the Reference Date will be extended for an additional 12 months up to three times. If the Put Option Condition is met during any of the Option Periods, yet the shares are not exercised prior to the end of the 12-month Option Period, the put option will expire. If the FlyOver Iceland attraction has not achieved the Put Option Condition by December 31, 2024, the put option expires. As of December 31, 2023, the FlyOver Iceland attraction has not achieved the Put Option Condition and we do not anticipate the Put Option Condition to be achieved prior to expiration.