Overview and Basis of Presentation - Narrative (Details) $ / shares in Units, $ in Thousands		3 Months Ended	6 Months Ended	9 Months Ended
	Aug. 05, 2020 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($) Segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Overview And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment				3
Initial Investment	$ 135,000
Fees	$ 9,200
Cash Dividends Payable Percentage	5.50%
Frequency of periodic payment of cumulative dividend	quarterly
Conversion price per share | $ / shares	$ 21.25
Preferred stock redemption term	additional Convertible Preferred Stock, which we may access during the 12 months
Minimum liquidity requirement	$ 125,000
Fees related to the amendment	$ 1,700
Pledge percentage of capital stock	100.00%
Non-cash goodwill impairment charge				$ 186,075
Goodwill				$ 96,931		$ 287,983
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%
Mountain Park Lodges
Overview And Summary Of Significant Accounting Policies [Line Items]
Percentage of non-equity ownership related to non-redeemable noncontrolling interests				40.00%
Geothermal Lagoon Attraction
Overview And Summary Of Significant Accounting Policies [Line Items]
Percentage of non-equity ownership related to non-redeemable noncontrolling interests				49.00%
GES
Overview And Summary Of Significant Accounting Policies [Line Items]
Non-cash goodwill impairment charge		$ 113,100	$ 186,100
Goodwill				$ 96,900
Pursuit
Overview And Summary Of Significant Accounting Policies [Line Items]
Non-cash goodwill impairment charge				1,757
Goodwill				$ 96,931		$ 101,878
Scenario Forecast
Overview And Summary Of Significant Accounting Policies [Line Items]
Minimum liquidity requirement					$ 100,000
LIBOR rate [Member]
Overview And Summary Of Significant Accounting Policies [Line Items]
Variable rate	3.50%
Maximum
Overview And Summary Of Significant Accounting Policies [Line Items]
Proceeds from issuance of additional preferred stock	$ 45,000
Lease expiration period				23 years
Maximum | Land
Overview And Summary Of Significant Accounting Policies [Line Items]
Lease expiration period				47 years