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Accounting Principles (Tables) | 12 Months Ended
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Dec. 31, 2017
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Summary of Depreciation Periods | The depreciation periods used are the following:
PROPERTY, PLANT, AND EQUIPMENT ITEM |  | DEPRECIATION PERIOD |
Fixtures and improvements in structures |  |  | 9 years |
Research and development / production tools |  |  | 5 years |
Research equipment and technical facilities |  |  | 5 years |
Computer equipment |  |  | 3 years |
Office equipment and furniture |  |  | 5 years |

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- Definition The tabular disclosure of property plant and equipment estimated useful life. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Text block. + References No definition available. + Details
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Period Type: | duration