Segment Information - Reconciliation of Income Statement Items from Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reportable segments reconciliations:
Total revenue		$ 233,599	$ 62,807	$ 323,767	$ 387,532
Interest expense, net		(9,518)	(5,450)	(20,168)	(14,399)
Multi-employer pension plan withdrawal				(57)	(462)
Other expense, net		(466)	(210)	(1,506)	(894)
Restructuring recoveries (charges)		(2,186)	(11,259)	(5,799)	(12,370)
Impairment charges			676		203,076
Loss from continuing operations before income taxes		24,856	(27,005)	(68,699)	(303,004)
GES
Reportable segments reconciliations:
Total revenue		116,044	13,992	160,109	319,930
Pursuit
Reportable segments reconciliations:
Total revenue		117,555	48,815	163,658	67,602
Operating Segments
Reportable segments reconciliations:
Segment operating income (loss)		40,102	(6,781)	(33,117)	(65,949)
Operating Segments | GES
Reportable segments reconciliations:
Total revenue		116,044	13,992	160,109	319,930
Segment operating income (loss)		(9,499)	(18,248)	(56,300)	(39,450)
Restructuring recoveries (charges)		2,129	10,686	5,699	11,371
Impairment charges			(676)		(201,319)
Operating Segments | Pursuit
Reportable segments reconciliations:
Total revenue		117,555	48,815	163,658	67,602
Segment operating income (loss)		49,601	11,467	23,183	(26,499)
Restructuring recoveries (charges)		32	(12)	55	45
Impairment charges					(1,757)
Corporate Eliminations
Reportable segments reconciliations:
Segment operating income (loss)	[1]	17	16	52	48
Corporate
Reportable segments reconciliations:
Segment operating income (loss)		(3,093)	(2,645)	(8,104)	(5,902)
Restructuring recoveries (charges)		$ 25	$ 585	$ 45	$ 954

[1] Corporate eliminations represent the elimination of depreciation expense recorded by Pursuit associated with previously eliminated intercompany profit realized by GES for renovations to Pursuit’s Banff Gondola.