Revenue Sources and Concentration of Sales (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 356,822	$ 361,497
Leasing revenues	1,271	3,257
Total revenues	358,093	364,754
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	344,595	349,556
Parts Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 12,227	$ 11,941