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Business Segments - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information |  |
Net Sales | $ 513,620 | $ 497,411
Segment Operating Profit (Loss) | 4,471 | 15,633
Segment Assets | 342,595 | 370,395
Depreciation/Amortization | 13,887 | 13,579
Expenditures for Long-Lived Assets | 4,620 | 9,179
Rail, Technologies, and Services |  |
Segment Reporting Information |  |
Net Sales | 299,749 | 276,447
Precast Concrete Products |  |
Segment Reporting Information |  |
Net Sales | 70,990 | 63,314
Steel Products and Measurement |  |
Segment Reporting Information |  |
Net Sales | 142,881 | 157,650
Operating Segments |  |
Segment Reporting Information |  |
Net Sales | 513,620 | 497,411
Segment Operating Profit (Loss) | 13,308 | 21,696
Segment Assets | 278,725 | 299,004
Depreciation/Amortization | 12,543 | 12,222
Expenditures for Long-Lived Assets | 3,600 | 8,504
Operating Segments | Rail, Technologies, and Services |  |
Segment Reporting Information |  |
Net Sales | 299,749 | 276,447
Segment Operating Profit (Loss) | 14,165 | 13,185
Segment Assets | 171,608 | 161,485
Depreciation/Amortization | 6,089 | 6,138
Expenditures for Long-Lived Assets | 1,081 | 4,599
Operating Segments | Precast Concrete Products |  |
Segment Reporting Information |  |
Net Sales | 70,990 | 63,314
Segment Operating Profit (Loss) | 1,545 | 566
Segment Assets | 48,740 | 44,510
Depreciation/Amortization | 1,716 | 1,125
Expenditures for Long-Lived Assets | 2,441 | 3,560
Operating Segments | Steel Products and Measurement |  |
Segment Reporting Information |  |
Net Sales | 142,881 | 157,650
Segment Operating Profit (Loss) | (2,402) | 7,945
Segment Assets | 58,377 | 93,009
Depreciation/Amortization | 4,738 | 4,959
Expenditures for Long-Lived Assets | $ 78 | $ 345

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