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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table summarizes the Company's net sales by major product and service category:
|  | Three Months Ended September 30, |  |  |  | Nine Months Ended September 30, |  |
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Rail Products |  | $ | 39,224 |  |  | $ | 49,234 |  |  | $ | 153,420 |  |  | $ | 139,600 |
Rail Technologies |  | 28,517 |  |  | 35,283 |  |  | 91,416 |  |  | 98,971 |
Rail Products and Services |  | 67,741 |  |  | 84,517 |  |  | 244,836 |  |  | 238,571 |
Piling and Fabricated Bridge |  | 28,703 |  |  | 26,798 |  |  | 90,023 |  |  | 71,505 |
Precast Concrete Products |  | 18,472 |  |  | 14,736 |  |  | 49,903 |  |  | 41,136 |
Construction Products |  | 47,175 |  |  | 41,534 |  |  | 139,926 |  |  | 112,641 |
Test, Inspection, and Threading Services |  | 12,249 |  |  | 15,296 |  |  | 40,777 |  |  | 44,517 |
Protective Coatings and Measurement Systems |  | 27,111 |  |  | 25,747 |  |  | 80,139 |  |  | 66,709 |
Tubular and Energy Services |  | 39,360 |  |  | 41,043 |  |  | 120,916 |  |  | 111,226 |
Total net sales |  | $ | 154,276 |  |  | $ | 167,094 |  |  | $ | 505,678 |  |  | $ | 462,438 |
Net sales by the timing of the transfer of products and services was as follows:
|  | Three Months Ended September 30, 2019 |  |  |  |  |  |
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 46,712 |  |  | $ | 29,375 |  |  | $ | 26,670 |  |  | $ | 102,757 |
Over time |  | 21,029 |  |  | 17,800 |  |  | 12,690 |  |  | 51,519 |
Total net sales |  | $ | 67,741 |  |  | $ | 47,175 |  |  | $ | 39,360 |  |  | $ | 154,276 |
|  | Three Months Ended September 30, 2018 |  |  |  |  |  |
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 61,426 |  |  | $ | 27,459 |  |  | $ | 33,474 |  |  | $ | 122,359 |
Over time |  | 23,091 |  |  | 14,075 |  |  | 7,569 |  |  | 44,735 |
Total net sales |  | $ | 84,517 |  |  | $ | 41,534 |  |  | $ | 41,043 |  |  | $ | 167,094 |
|  | Nine Months Ended September 30, 2019 |  |  |  |  |  |
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 183,905 |  |  | $ | 90,565 |  |  | $ | 89,346 |  |  | $ | 363,816 |
Over time |  | 60,931 |  |  | 49,361 |  |  | 31,570 |  |  | 141,862 |
Total net sales |  | $ | 244,836 |  |  | $ | 139,926 |  |  | $ | 120,916 |  |  | $ | 505,678 |
|  | Nine Months Ended September 30, 2018 |  |  |  |  |  |
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 176,592 |  |  | $ | 74,581 |  |  | $ | 94,832 |  |  | $ | 346,005 |
Over time |  | 61,979 |  |  | 38,060 |  |  | 16,394 |  |  | 116,433 |
Total net sales |  | $ | 238,571 |  |  | $ | 112,641 |  |  | $ | 111,226 |  |  | $ | 462,438 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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