Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Taxes [Line Items]
Income tax expense	$ 2,524	$ 716
Pre-tax (loss) income	$ (43,137)	$ 2,439
Effective tax rate	(5.90%)	29.50%
Impairment - goodwill and intangible assets	$ 33,964
Canada [Member]
Income Taxes [Line Items]
Effective tax rate	25.00%
U.S. Deferred Tax Assets [Member]
Income Taxes [Line Items]
Income tax expense	$ 1,000
Tax Act [Member]
Income Taxes [Line Items]
US federal income tax statutory rate	21.00%
Century Mile Racetrack [Member]
Income Taxes [Line Items]
Valuation allowance	$ 1,500