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Income Taxes (Tables) | 3 Months Ended
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Mar. 31, 2018
Income Tax Disclosure [Abstract] |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] | The following presents a roll-forward of the Company’s unrecognized tax benefits and associated interest for the three months ended March 31, 2018 (amounts in thousands):
|  | Unrecognized tax benefits |
Balance - January 1, 2018 |  | $ | 911 |
Interest accrual |  |  | 9 |
Foreign currency revaluation |  |  | (14) |
Balance - March 31, 2018 |  | $ | 906 |

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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=96868398&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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