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Accounts Receivable (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Schedule Of Accounts Receivable, Net [Table Text Block] |
|  | 2015 |  | 2014
Trade | $ | 79,100 | $ | 90,494
Allowance for doubtful accounts |  | (1,485) |  | (1,036)
|  | 77,615 |  | 89,458
Other |  | 872 |  | 720
| $ | 78,487 | $ | 90,178
Operating Segments [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Schedule Of Accounts Receivable, Net [Table Text Block] |
|  | 2015 |  | 2014
Rail Products and Services | $ | 43,155 | $ | 45,931
Construction Products |  | 20,489 |  | 33,760
Tubular and Energy Services |  | 13,971 |  | 9,767
| $ | 77,615 | $ | 89,458

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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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