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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | The following table represents the changes in goodwill by segment:
| Energy & Chemicals |  | Distribution & Storage |  | BioMedical |  | Total
Balance at December 31, 2016 | $ | 27,873 |  |  | $ | 165,520 |  |  | $ | 24,577 |  |  | $ | 217,970 |
Foreign currency translation adjustments and other | — |  |  | 262 |  |  | — |  |  | 262 |
Goodwill acquired during the year | 10,120 |  |  | — |  |  | — |  |  | 10,120 |
Balance at March 31, 2017 | $ | 37,993 |  |  | $ | 165,782 |  |  | $ | 24,577 |  |  | $ | 228,352 |
Accumulated goodwill impairment loss | $ | 64,603 |  |  | $ | — |  |  | $ | 131,243 |  |  | $ | 195,846 |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets [Table Text Block] | The following table displays the gross carrying amount and accumulated amortization for finite-lived intangible assets and indefinite-lived intangible assets (exclusive of goodwill)(1)(2):
| March 31, 2017 |  | December 31, 2016
| Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Finite-lived intangible assets: |  |  |  |  |  |  |
Unpatented technology | $ | 8,222 |  |  | $ | (3,309 | ) |  | $ | 8,186 |  |  | $ | (3,132 | )
Patents and other | 1,882 |  |  | (743 | ) |  | 1,235 |  |  | (695 | )
Trademarks and trade names | 5,280 |  |  | (2,369 | ) |  | 4,918 |  |  | (2,198 | )
Customer relationships | 126,845 |  |  | (84,215 | ) |  | 119,320 |  |  | (81,614 | )
Land use rights | 12,719 |  |  | (929 | ) |  | 12,650 |  |  | (860 | )
Total finite-lived intangible assets | $ | 154,948 |  |  | $ | (91,565 | ) |  | $ | 146,309 |  |  | $ | (88,499 | )
Indefinite-lived intangible assets: |  |  |  |  |  |  |
Trademarks and trade names | $ | 35,648 |  |  | — |  |  | $ | 35,633 |  |  | — |
Total intangible assets | $ | 190,596 |  |  | $ | (91,565 | ) |  | $ | 181,942 |  |  | $ | (88,499 | )
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] | The Company estimates future amortization expense for its finite-lived intangible assets as follows:
For the Year Ending December 31, |
2017 | $ | 11,700 |
2018 | 10,600 |
2019 | 10,600 |
2020 | 9,000 |
2021 | 2,900 |
Schedule of Government Grants [Table Text Block] | Government grants at March 31, 2017 and December 31, 2016 are as follows:
| March 31, 2017 |  | December 31, 2016
Current | $ | 463 |  |  | $ | 446 |
Long-term | 8,240 |  |  | 8,153 |
Total government grants | $ | 8,703 |  |  | $ | 8,599 |

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