Overview and Summary of Significant Accounting Policies - Narrative (Details)		12 Months Ended
	Aug. 05, 2020 USD ($) $ / shares	Dec. 31, 2020 USD ($) Segment	Dec. 31, 2019 USD ($)	Jun. 08, 2019 USD ($)	Dec. 31, 2018 USD ($)
Overview and Summary of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment		3
Initial Investment	$ 135,000,000
Fees	$ 9,200,000
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		$ 100,000,000
Fees related to the amendment	$ 1,700,000
Pledge percentage of capital stock	100.00%
Non-cash goodwill impairment charge		185,789,000
Goodwill		$ 99,847,000	$ 287,983,000		$ 261,330,000
Remaining maturities of highly-liquid investments		three months or less
Proceeds from life insurance policy		$ 24,800,000
Percentage of non equity ownership related redeemable noncontrolling interests		54.50%
Share based compensation arrangements requisite service period		2 years
Stock Options
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period		2 years
Liability Based Awards
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period		3 years
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]
Goodwill				$ 20,194,000
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		$ 185,800,000
Goodwill		99,800,000	$ 186,105,000
U.S Audio Visual Production Business
Overview and Summary of Significant Accounting Policies [Line Items]
Non-cash impairment charge to intangible assets		$ 15,700
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	$ 45,000,000
Lease expiration period		23 years
Share based compensation arrangement performance period		3 years 4 months 24 days
Maximum | Equity Based Awards
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period		3 years
Maximum | Building
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		40 years
Maximum | Equipment
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		12 years
Maximum | Land
Overview and Summary of Significant Accounting Policies [Line Items]
Lease expiration period		47 years
Minimum [Member]
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangement performance period		1 year
Minimum [Member] | Equity Based Awards
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period		3 months
Minimum [Member] | Building
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		15 years
Minimum [Member] | Equipment
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		3 years