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Revenue (Tables) | 6 Months Ended
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Jun. 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:
|  | Three Months Ended June 30, |  |  |  | Six Months Ended June 30, |  |
|  | 2020 |  | 2019 |  | 2020 |  | 2019
Rail Products |  | $ | 52,206 |  |  | $ | 67,990 |  |  | $ | 95,768 |  |  | $ | 114,196 |
Rail Technologies |  | 22,733 |  |  | 33,411 |  |  | 49,375 |  |  | 62,899 |
Rail Products and Services |  | 74,939 |  |  | 101,401 |  |  | 145,143 |  |  | 177,095 |
Piling and Fabricated Bridge |  | 25,580 |  |  | 37,588 |  |  | 43,971 |  |  | 61,320 |
Precast Concrete Products |  | 16,428 |  |  | 17,818 |  |  | 27,071 |  |  | 31,431 |
Construction Products |  | 42,008 |  |  | 55,406 |  |  | 71,042 |  |  | 92,751 |
Test, Inspection, and Threading Services |  | 8,673 |  |  | 13,804 |  |  | 18,377 |  |  | 28,528 |
Protective Coatings and Measurement Systems |  | 20,146 |  |  | 30,322 |  |  | 39,979 |  |  | 53,028 |
Tubular and Energy Services |  | 28,819 |  |  | 44,126 |  |  | 58,356 |  |  | 81,556 |
Total net sales |  | $ | 145,766 |  |  | $ | 200,933 |  |  | $ | 274,541 |  |  | $ | 351,402 |
Net sales by the timing of the transfer of products and services was as follows:
|  | Three Months Ended June 30, 2020 |  |  |  |  |  |
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 61,275 |  |  | $ | 28,148 |  |  | $ | 20,797 |  |  | $ | 110,220 |
Over time |  | 13,664 |  |  | 13,860 |  |  | 8,022 |  |  | 35,546 |
Total net sales |  | $ | 74,939 |  |  | $ | 42,008 |  |  | $ | 28,819 |  |  | $ | 145,766 |
|  | Three Months Ended June 30, 2019 |  |  |  |  |  |
|  | Rail Products and Services |  | Construction Products |  | Tubular and Energy Services |  | Total
Point in time |  | $ | 80,701 |  |  | $ | 38,095 |  |  | $ | 33,542 |  |  | $ | 152,338 |
Over time |  | 20,700 |  |  | 17,311 |  |  | 10,584 |  |  | 48,595 |
Total net sales |  | $ | 101,401 |  |  | $ | 55,406 |  |  | $ | 44,126 |  |  | $ | 200,933 |

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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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