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Accounts Receivable, net | 9 Months Ended
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Sep. 30, 2019
Receivables [Abstract] |
Accounts Receivable, net | Accounts Receivable, net Accounts receivable at September 30, 2019 and December 31, 2018 were as follows (in thousands):
| September 30, |  | December 31,
| 2019 |  | 2018
Trade accounts receivable, net of allowance of $3,816 and $3,925, respectively | $ | 122,684 |  |  | $ | 114,630 |
Unbilled receivables | 34,066 |  |  | 54,591 |
Taxes receivable | 18,649 |  |  | 15,762 |
Affiliated (1) | 549 |  |  | 549 |
Other receivables | 3,221 |  |  | 3,882 |
Total accounts receivable, net | $ | 179,169 |  |  | $ | 189,414 |
(1) Amounts represent expenditures on behalf of non-consolidated affiliates.

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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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