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Goodwill (Notes) | 12 Months Ended
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Dec. 31, 2017
Goodwill [Abstract] |
Goodwill Disclosure [Text Block] | Goodwill Goodwill activity related to these acquisitions is included in the table below:
| (Dollars in thousands)
| December 31,
| 2017 |  | 2016
Beginning balance | $ | 5,520 |  |  | $ | 319 |
Acquisition | 14,176 |  |  | 5,231 |
Impact of foreign exchange | (9 | ) |  | (30 | )
Adjustment to prior year allocation (1) | (73 | ) |  | — |
Ending balance | $ | 19,614 |  |  | $ | 5,520 |
(1) | The reduction of $0.1 million in 2017 resulted from a non-cash adjustment to the estimated purchase price allocation to inventory originally recorded in 2016.
Goodwill was tested for impairment in the fourth quarter of 2017 and no adjustment was deemed necessary.

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- Definition Goodwill [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for goodwill. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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