Fair Value Measurements And Derivative Instruments Reporting (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 CAD ($)	Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between levels	$ 0
Impairment - goodwill and intangible assets	33,964,000
Fair value of land lease	20,200,000		$ 28.6
Cash equivalents	0			$ 0
Interest expense	11,367,000	$ 1,258,000
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment - goodwill and intangible assets	$ 1,000,000.0
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest expense		$ 300,000