Summary of Significant Accounting Policie (Schedule Of Revenue Recognition) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 104,052	$ 223,506
Leasing revenues	4,395	6,452
Total revenues	108,447	229,958
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	94,455	212,716
Parts Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 9,597	10,699
Other sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		$ 91