Goodwill and Other Intangible Assets - Goodwill by Reporting Unit and Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill by reporting unit and segment
Goodwill	$ 99,847	$ 287,983	$ 261,330
GES North America
Goodwill by reporting unit and segment
Goodwill		155,276	154,944
GES North America | G E S U S
Goodwill by reporting unit and segment
Goodwill		148,277
GES North America | GES Canada
Goodwill by reporting unit and segment
Goodwill		6,999
GES EMEA
Goodwill by reporting unit and segment
Goodwill		30,829	29,954
GES
Goodwill by reporting unit and segment
Goodwill	99,800	186,105
Pursuit
Goodwill by reporting unit and segment
Goodwill	99,847	101,878	$ 76,432
Pursuit | Banff Jasper Collection
Goodwill by reporting unit and segment
Goodwill	54,856	55,524
Pursuit | Alaska Collection
Goodwill by reporting unit and segment
Goodwill	3,184	3,184
Pursuit | Glacier Park Collection
Goodwill by reporting unit and segment
Goodwill		1,758
FlyOver Canada | Pursuit
Goodwill by reporting unit and segment
Goodwill	$ 41,807	$ 41,412