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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table summarizes the Company's net sales by major product and service category for the periods presented:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Rail Products |  | $ | 38,057 |  |  | $ | 39,224 |  |  | $ | 133,825 |  |  | $ | 153,420 |
Rail Technologies |  | 25,931 |  |  | 28,517 |  |  | 75,306 |  |  | 91,416 |
Rail Products and Services |  | 63,988 |  |  | 67,741 |  |  | 209,131 |  |  | 244,836 |
Piling and Fabricated Bridge |  | 22,138 |  |  | 28,703 |  |  | 66,109 |  |  | 90,023 |
Precast Concrete Products |  | 15,745 |  |  | 18,472 |  |  | 42,816 |  |  | 49,903 |
Construction Products |  | 37,883 |  |  | 47,175 |  |  | 108,925 |  |  | 139,926 |
Threaded Products |  | 3,524 |  |  | 2,821 |  |  | 10,830 |  |  | 10,196 |
Protective Coatings and Measurement Systems |  | 12,970 |  |  | 27,111 |  |  | 52,949 |  |  | 80,139 |
Tubular and Energy Services |  | 16,494 |  |  | 29,932 |  |  | 63,779 |  |  | 90,335 |
Total net sales |  | $ | 118,365 |  |  | $ | 144,848 |  |  | $ | 381,835 |  |  | $ | 475,097 |
Net sales by the timing of the transfer of products and services was as follows for the periods presented:
|  | Three Months Ended September 30, 2020
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 47,027 |  |  | $ | 22,928 |  |  | $ | 10,294 |  |  | $ | 80,249 |
Over time |  | 16,961 |  |  | 14,955 |  |  | 6,200 |  |  | 38,116 |
Total net sales |  | $ | 63,988 |  |  | $ | 37,883 |  |  | $ | 16,494 |  |  | $ | 118,365 |
|  | Three Months Ended September 30, 2019
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 46,712 |  |  | $ | 29,375 |  |  | $ | 17,242 |  |  | $ | 93,329 |
Over time |  | 21,029 |  |  | 17,800 |  |  | 12,690 |  |  | 51,519 |
Total net sales |  | $ | 67,741 |  |  | $ | 47,175 |  |  | $ | 29,932 |  |  | $ | 144,848 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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