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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2018
Receivables [Abstract] |
Schedule of Accounts Receivable | As of December 31, 2018 and 2017, Accounts receivable consisted of the following:
(in thousands) | December 31, 2018 |  | December 31, 2017 |
Trade and other accounts receivable | $211,244 |  | $152,375 |
Bank promissory notes | 19,269 |  | 20,255 |
Revenue in excess of progress billings | - |  | 37,964 |
Allowance for doubtful accounts | (7,337 | ) | (7,919 | )
Total accounts receivable | $223,176 |  | $202,675 |
Schedule of Noncurrent Receivables | As of December 31, 2018 and December 31, 2017, Noncurrent receivables consisted of the following:
(in thousands) | December 31, 2018 |  | December 31, 2017 |
Noncurrent receivables | $45,061 |  | $32,811 |

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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=6877327&loc=d3e13212-122682 + Details
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