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Comprehensive income (loss) (Tables) | 12 Months Ended
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Dec. 31, 2016
Stockholders' Equity Note [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The components of accumulated other comprehensive loss as of December 31, 2016 and 2015, and reclassifications out of other comprehensive income (loss) for the years then ended, are presented below (in thousands):
|  |  |  |  |  | Foreign Currency |  |  |
|  | Pension Liability |  | Fair Value of |  | Translation |  | Accumulated Other |
|  | Adjustment |  | Derivatives |  | Adjustment |  | Comprehensive Loss |
Balance at January 1, 2016 |  | $ | 1,523 |  | $ | (165) |  | $ | (1,442) |  | $ | (84) |
Other comprehensive income (loss) before reclassifications, net of taxes |  |  | - |  |  | (90) |  |  | 49 |  |  | (41) |
Total other comprehensive income (loss) before reclassifications, net of taxes |  |  | 1,523 |  |  | (255) |  |  | (1,393) |  |  | (125) |
Net amount reclassified to earnings |  |  | (136) |  |  | (63) |  |  | - |  |  | (199) |
Balance at December 31, 2016 |  | $ | 1,387 |  | $ | (318) |  | $ | (1,393) |  | $ | (324) |
|  |  |  |  |  | Foreign Currency |  |  |
|  | Pension Liability |  | Fair Value of |  | Translation |  | Accumulated Other |
|  | Adjustment |  | Derivatives |  | Adjustment |  | Comprehensive Loss |
Balance at January 1, 2015 |  | $ | 497 |  | $ | (337) |  | $ | (447) |  | $ | (287) |
Other comprehensive income (loss) before reclassifications, net of taxes |  |  | 1,110 |  |  | (51) |  |  | (995) |  |  | 64 |
Total other comprehensive income (loss) before reclassifications, net of taxes |  |  | 1,607 |  |  | (388) |  |  | (1,442) |  |  | (223) |
Net amount reclassified to earnings |  |  | (84) |  |  | 223 |  |  | - |  |  | 139 |
Balance at December 31, 2015 |  | $ | 1,523 |  | $ | (165) |  | $ | (1,442) |  | $ | (84) |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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- References No definition available. + Details
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