Discontinued Operations (Summary Of Held For Sale Assets And Liabilities) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale	$ 322,294
Net assets	313,542
Railcar Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rental equipment	282,104
Other assets	2,409
Assets held for sale	284,513
Logistics [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable, net of allowance for doubtful accounts	15,601
Prepaid expenses and other assets	2,263
Goodwill	15,794
Intangible assets	4,123
Assets held for sale	37,781
Accounts payable	2,757
Accrued expenses and other current liabilities	5,995
Liabilities held for sale	$ 8,752