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Business Segments (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting Information |  |  |  |
Total net sales | $ 154,276 | $ 167,094 | $ 505,678 | $ 462,438
Segment Profit | 7,495 | 11,176 | 32,847 | 27,837
Rail Products and Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 67,741 | 84,517 | 244,836 | 238,571
Construction Products |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 47,175 | 41,534 | 139,926 | 112,641
Tubular and Energy Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 39,360 | 41,043 | 120,916 | 111,226
Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 154,276 | 167,094 | 505,678 | 462,438
Segment Profit | 7,495 | 11,176 | 32,847 | 27,837
Operating Segments | Rail Products and Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 67,741 | 84,517 | 244,836 | 238,571
Segment Profit | 3,417 | 5,299 | 14,815 | 12,655
Operating Segments | Construction Products |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 47,175 | 41,534 | 139,926 | 112,641
Segment Profit | 1,848 | 1,603 | 6,095 | 4,478
Operating Segments | Tubular and Energy Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 39,360 | 41,043 | 120,916 | 111,226
Segment Profit | $ 2,230 | $ 4,274 | $ 11,937 | $ 10,704

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