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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill / Tradename |
(Table only in thousands) |  | Energy Segment |  |  | Environmental Segment |  |  | Fluid Handling and Filtration Segment |  |  | Totals |
Balance of goodwill at December 31, 2014 |  | $ | 17,773 |  |  | $ | 55,031 |  |  | $ | 93,057 |  |  | $ | 165,861 |
2015 acquisition |  |  | 55,655 |  |  |  | — |  |  |  | — |  |  |  | 55,655 |
Foreign currency translation |  |  | (1,353 | ) |  |  | — |  |  |  | — |  |  |  | (1,353 | )
Balance of goodwill at December 31, 2015 |  |  | 72,075 |  |  |  | 55,031 |  |  |  | 93,057 |  |  |  | 220,163 |
2016 acquisition related adjustments |  |  | 4,205 |  |  |  | — |  |  |  | — |  |  |  | 4,205 |
Impairment charge |  |  | — |  |  |  | (6,828 | ) |  |  | (46,934 | ) |  |  | (53,762 | )
Foreign currency translation |  |  | (453 | ) |  |  | — |  |  |  | — |  |  |  | (453 | )
Balance of goodwill at December 31, 2016 |  | $ | 75,827 |  |  | $ | 48,203 |  |  | $ | 46,123 |  |  | $ | 170,153 |
|  | Tradenames |
(Table only in thousands) |  | 2016 |  |  | 2015 |
Beginning balance |  | $ | 26,337 |  |  | $ | 19,766 |
Acquisitions and related adjustments |  |  | — |  |  |  | 10,280 |
Impairment charge |  |  | (4,161 | ) |  |  | (3,340 | )
Foreign currency adjustments |  |  | (134 | ) |  |  | (369 | )
|  | $ | 22,042 |  |  | $ | 26,337 |
Intangible Assets - Finite Life |
|  | 2016 |  |  | 2015 |
(Table only in thousands) Intangible assets – finite life |  | Cost |  |  | Accum. Amort. |  |  | Cost |  |  | Accum. Amort. |
Patents |  | $ | 1,439 |  |  | $ | 1,439 |  |  | $ | 1,456 |  |  | $ | 1,456 |
Employment agreements |  |  | 733 |  |  |  | 733 |  |  |  | 733 |  |  |  | 677 |
Technology |  |  | 15,867 |  |  |  | 6,360 |  |  |  | 15,867 |  |  |  | 4,027 |
Customer lists |  |  | 77,497 |  |  |  | 26,041 |  |  |  | 77,497 |  |  |  | 17,756 |
Noncompetition agreements |  |  | 1,118 |  |  |  | 478 |  |  |  | 1,118 |  |  |  | 257 |
Tradename |  |  | 1,390 |  |  |  | 301 |  |  |  | 1,390 |  |  |  | 162 |
Backlog |  |  | 4,270 |  |  |  | 4,270 |  |  |  | 4,270 |  |  |  | 1,423 |
Foreign currency adjustments |  |  | (2,964 | ) |  |  | (1,000 | ) |  |  | (2,309 | ) |  |  | (693 | )
|  | $ | 99,350 |  |  | $ | 38,622 |  |  | $ | 100,022 |  |  | $ | 25,065 |

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