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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2020
Receivables [Abstract] |
Accounts Receivable, Allowance for Credit Loss | The following table sets forth the Company’s allowance for doubtful accounts:
|  | Allowance for Doubtful Accounts
December 31, 2019 |  | $ | 1,073 |
Current period provision |  | 286 |
Write-off against allowance |  | (415) |
December 31, 2020 |  | $ | 944 |
Accounts Receivable Detail | Accounts receivable as of December 31, 2020 and 2019 are summarized as follows:
|  | December 31,
|  | 2020 |  | 2019
Accounts receivable |  | $ | 59,242 |  |  | $ | 74,689 |
Allowance for doubtful accounts |  | (944) |  |  | (1,073) |
Accounts receivable - net |  | $ | 58,298 |  |  | $ | 73,616 |
The Company’s customers are principally in the rail, transportation, heavy civil, agricultural, energy, commercial and residential infrastructure sectors. As of December 31, 2020 and 2019, trade receivables, net of allowance for doubtful accounts, from customers were as follows:
|  | December 31,
|  | 2020 |  | 2019
Rail Technologies and Services |  | $ | 33,960 |  |  | $ | 44,941 |
Infrastructure Solutions |  | 24,252 |  |  | 28,557 |
Trade accounts receivable - net |  | $ | 58,212 |  |  | $ | 73,498 |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + 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://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 + Details
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