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Revenue Sources and Concentration of Sales | 12 Months Ended
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Dec. 31, 2017
Revenue Sources and Concentration of Sales [Abstract] |
Revenue Sources and Concentration of Sales | Note 20 – Revenue Sources and Concentration of Sales ﻿ The following table sets forth the Company’s sales resulting from various revenue sources for the periods indicated below: ﻿ ﻿ ﻿
﻿ |  |  |  |  |
﻿ | Year ended December 31,
﻿ | 2017 |  | 2016 |  | 2015
﻿ |  |  |  |  |
﻿Railcar sales | $ 398,095 |  | $ 513,543 |  | $ 743,135
﻿Parts sales | 8,874 |  | 7,573 |  | 9,845
﻿Leasing revenues | 2,298 |  | 2,605 |  | 2,654
﻿Maintenance and repair revenues | 77 |  | 10 |  | 17,020
﻿Other sales | 130 |  | - |  | 200
﻿ | $ 409,474 |  | $ 523,731 |  | $ 772,854
﻿ |  |  |  |  |
Due to the nature of its operations, the Company is subject to significant concentration of risks related to business with a few customers. Sales to the Company’s top three customers accounted for 21%, 15% and 1 2%, respectively, of revenues for the year ended December 31, 201 7. Sales to the Company’s top three customers accounted for 23%, 17% and 15%, respectively, of revenues for the year ended December 31, 2016. Sales to the Company’s top three customers accounted for 22%, 19% and 10%, respectively, of revenues for the year ended December 31, 2015. The Company’s sales to customers outside the United States were $23,212, $34,039 and $62,589 in 201 7, 201 6 and 201 5, respectively.

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