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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | For the years ended December 31, 2021 and 2020, net sales by the timing of the transfer of goods and services were as follows:
Year Ended December 31, 2021 |  | Rail, Technologies, and Services |  | Precast Concrete Products |  | Steel Products and Measurement |  | Total
Point in time |  | $ | 232,880 |  |  | $ | 21,351 |  |  | $ | 105,758 |  |  | $ | 359,989 |
Over time |  | 66,869 |  |  | 49,639 |  |  | 37,123 |  |  | 153,631 |
Total net sales |  | $ | 299,749 |  |  | $ | 70,990 |  |  | $ | 142,881 |  |  | $ | 513,620 |
Year Ended December 31, 2020 |  | Rail, Technologies, and Services |  | Precast Concrete Products |  | Steel Products and Measurement |  | Total
Point in time |  | $ | 212,212 |  |  | $ | 20,443 |  |  | $ | 118,736 |  |  | $ | 351,391 |
Over time |  | 64,235 |  |  | 42,871 |  |  | 38,914 |  |  | 146,020 |
Total net sales |  | $ | 276,447 |  |  | $ | 63,314 |  |  | $ | 157,650 |  |  | $ | 497,411 |

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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=123351226&loc=SL49130545-203045 + Details
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