Overview and Basis of Presentation - Narrative (Details) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Segment Lodge Recreational Excursion RetailShop DiningOutlet	Jun. 30, 2017 USD ($)
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment					3
Amount reclassified from operating expenses (cost of services and corporate activities) to other expense, with retrospective effect	[1]	$ 543		$ 222	$ 781	$ 674
Tax benefit to provisional estimate for reduction in corporate tax rate applied to deferred tax assets		100
Impact of adopting Topic 606 to net income		23,490		27,947	$ 14,103	34,724
Percentage of non equity ownership related redeemable noncontrolling interests					54.50%
Glacier Park Inc
Overview And Summary Of Significant Accounting Policies [Line Items]
Percentage of non-equity ownership related to non-redeemable noncontrolling interests					20.00%
ASU 2017-07
Overview And Summary Of Significant Accounting Policies [Line Items]
Cumulative-effect adjustment to increase beginning retained earnings			$ 600
Amount reclassified from operating expenses (cost of services and corporate activities) to other expense, with retrospective effect				222		674
Accounting Standards Update 2014-09 | Effect of Change
Overview And Summary Of Significant Accounting Policies [Line Items]
Impact of adopting Topic 606 to net income		600			$ 1,200
Minimum | Accounting Standards Update 2016 02
Overview And Summary Of Significant Accounting Policies [Line Items]
Anticipated lease liability and related right of use asset		60,000			60,000
Services
Overview And Summary Of Significant Accounting Policies [Line Items]
Impact of adopting Topic 606 to cost of services		280,842		281,909	538,137	562,547
Services | ASU 2017-07
Overview And Summary Of Significant Accounting Policies [Line Items]
Impact of adopting Topic 606 to cost of services				$ (134)		$ (517)
Services | Accounting Standards Update 2014-09 | Effect of Change
Overview And Summary Of Significant Accounting Policies [Line Items]
Impact of adopting Topic 606 to cost of services		$ 800			$ 1,600
GES
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of product lines | Segment					3
Number of live event markets | Segment					4
Pursuit
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of business lines | Segment					4
Pursuit | Banff Jasper Collection
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of world-class recreational attractions | Recreational					5
Pursuit | Banff Jasper Collection | Banff National Park
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of lodges | Lodge					2
Pursuit | Banff Jasper Collection | Jasper National Park
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of lodges | Lodge					1
Pursuit | Alaska Collection | Denali National Park and Preserve
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of lodges | Lodge					2
Number of sightseeing excursion | Excursion					1
Pursuit | Alaska Collection | Talkeetna
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of lodges | Lodge					1
Pursuit | Alaska Collection | Kenai Fjords National Park
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of lodges | Lodge					2
Pursuit | Glacier Park Collection
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of lodges | Lodge					7
Number of retail shops | RetailShop					12
Number of dining outlets | DiningOutlet					11

[1] We adopted ASU 2017-07 on January 1, 2018, which requires retrospective adoption. As a result, we recorded the nonservice cost component of net periodic benefit cost within other expense for the three and six months ended June 30, 2018, and we reclassified $0.2 million from operating expenses to other expense for the three months ended June 30, 2017 and $0.7 million for the six months ended June 30, 2017 to conform with current period presentation. Refer to Note 1 – Overview and Basis of Presentation for additional details on the impact of this adoption on our Condensed Consolidated Statements of Operations.