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SINCLAIR AGREEMENT (Details) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Jan. 27, 2021 USD ($)	Nov. 18, 2020 USD ($) renewalTerm $ / shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Preliminary
Naming rights liability			$ 243,965	$ 243,965	$ 0
Accretion of trade name liability and naming rights				$ 594	0	$ 0
Warrants subject to approval				0.199
Common stock price (in USD per share) | $ / shares		$ 30.61	$ 50.23	$ 50.23
Mark to market loss			$ 32,900
Naming rights intangible asset			356,022	$ 356,022	$ 17,053
Naming rights
Preliminary
Naming rights intangible asset			$ 338,241	$ 338,241
Maximum
Preliminary
Volatility				60.00%
Risk free rates				0.52%
Expected terms				6 years
Minimum
Preliminary
Volatility				55.00%
Risk free rates				0.34%
Expected terms				4 years 4 months 24 days
Penny warrant
Preliminary
Shares for purchase from exercisable warrants (in shares) | shares			4,915,726	4,915,726
Exercise price of warrants (in USD per share) | $ / shares			$ 0.01	$ 0.01
Fair value of underlying shares		$ 150,400
Performance Warrant
Preliminary
Exercise price of warrants (in USD per share) | $ / shares			$ 0.01	$ 0.01
Total fair values		55,200	$ 88,100	$ 88,100
Performance Warrant | Maximum
Preliminary
Shares for purchase from exercisable warrants (in shares) | shares			3,279,337	3,279,337
Option on Securities
Preliminary
Shares for purchase from exercisable warrants (in shares) | shares			1,639,669	1,639,669
Exercise period				7 years
Total fair values		$ 33,400	$ 58,200	$ 58,200
Volatility		60.00%		55.00%
Risk free rates		0.95%		0.99%
Expected terms		11 years		10 years 10 months 24 days
Mark to market loss			$ 24,800
Option on Securities | Maximum
Preliminary
Exercise price of warrants (in USD per share) | $ / shares			$ 45.00	$ 45.00
Option on Securities | Minimum
Preliminary
Exercise price of warrants (in USD per share) | $ / shares			$ 30.00	$ 30.00
Penny Warrant and Options | Subsequent event
Preliminary
Adjusted fair value	$ 59,700
Sinclair Agreement
Preliminary
Initial term of agreement		10 years
Renewal option | renewalTerm		1
Additional renewal term		5 years
Annual naming rights fees			$ 88,000	$ 88,000
Naming rights liability			56,600	56,600
Accretion of trade name liability and naming rights				500
Tax benefit required to be shared		0.60
Liability		$ 37,100	43,000	43,000
Increase in naming rights		5,900
Sinclair Agreement | Naming rights liabilities
Preliminary
Naming rights liability			54,600	54,600
Sinclair Agreement | Accrued liabilities
Preliminary
Naming rights liability			$ 2,000	$ 2,000
Sinclair Agreement | Naming rights
Preliminary
Naming rights value		$ 332,300
Useful life				10 years

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