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Receivables (Tables) | 3 Months Ended
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Mar. 31, 2019
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] | Receivables consist of the following:
| March 31, 2019 |  | December 31, 2018
Trade receivables | $ | 132 |  |  | $ | 87 |
Income tax receivable | 18 |  |  | 16 |
Other receivables | 18 |  |  | 25 |
Allowance for doubtful accounts | (2 | ) |  | (1 | )
Total | $ | 166 |  |  | $ | 128 |

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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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