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Trademarks, Licenses and Other Intangible Assets (Details narrative) € in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2018 EUR (€)
Licensing Agreements LineI tems [Line Items] |  |  |  |
Amortization expense | $ 7,000 | $ 6,000 | $ 5,900 |
Future amortization expense: |  |  |  |
2019 | 5,000 |  |  |
2020 | 4,600 |  |  |
2021 | 4,000 |  |  |
2022 | 3,700 |  |  |
2023 | $ 3,700 |  |  |
Amortization period | 14 years |  |  |
Repurchase price | $ 80,000 |  |  |
Impairment of Intangible Assets, Finite-lived |  | $ 2,123 | $ 5,658 |
Measurement Input, Discount Rate [Member] |  |  |  |
Future amortization expense: |  |  |  |
Weighted average cost of capital | 6.21% | 6.22% | 6.22% |
Euro [Member] |  |  |  |
Future amortization expense: |  |  |  |
Repurchase price | € |  |  |  | € 70,000
Maximum [Member] |  |  |  |
Future amortization expense: |  |  |  |
Amortization period | 20 years |  |  |
Minimum [Member] |  |  |  |
Future amortization expense: |  |  |  |
Amortization period | 3 years |  |  |
Trademarks [Member] |  |  |  |
Future amortization expense: |  |  |  |
Amortization period | 18 years |  |  |
Licenses [Member] |  |  |  |
Future amortization expense: |  |  |  |
Amortization period | 14 years |  |  |
Other Intangible Assets [Member] |  |  |  |
Future amortization expense: |  |  |  |
Amortization period | 2 years |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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