Rental Equipment (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Impairment of rental equipment	$ 557	$ 19,200	$ 7,323	$ 19,724	$ 7,323
Railcar [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life				40 years
Residual Value, Percentage				10.00%