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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable |
Schedule Of Accounts Receivable, Net | Accounts receivable at December 31, 2017 and 2016 are summarized as follows:
|  | 2017 |  | 2016
Trade |  | $ | 74,514 |  |  | $ | 64,707 |
Allowance for doubtful accounts |  | (2,151 | ) |  | (1,417 | )
|  | 72,363 |  |  | 63,290 |
Other |  | 4,219 |  |  | 3,342 |
|  | $ | 76,582 |  |  | $ | 66,632 |
Operating Segments |
Accounts, Notes, Loans and Financing Receivable |
Schedule Of Accounts Receivable, Net | The Company’s customers are principally in the transportation and energy infrastructure sectors. At December 31, 2017 and 2016, trade receivables, net of allowance for doubtful accounts, from customers were as follows:
|  | 2017 |  | 2016
Rail Products and Services |  | $ | 31,225 |  |  | $ | 29,552 |
Construction Products |  | 20,070 |  |  | 20,531 |
Tubular and Energy Services |  | 21,068 |  |  | 13,207 |
|  | $ | 72,363 |  |  | $ | 63,290 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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