Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions		6 Months Ended
	Aug. 09, 2019	Jun. 30, 2019
Debt Instrument [Line Items]
Debt to be repaid upon sale of related properties, term		1 year
Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio		1.50
Tangible net worth		$ 55.0
Percentage of net offering proceeds added to tangible net worth		80.00%
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio		60.00%
Leverage ratio after extension option		6.25%
Secured leverage ratio		40.00%
Unhedged variable rate debt		25.00%
Distributions, percentage of funds available allowed		95.00%
Maximum [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Distributions, percentage of funds available allowed	105.00%