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Acquisitions - EnShape GmbH Narrative (Details) - EnShape GmbH [Member] - USD ($) |  |  | 12 Months Ended
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Nov. 30, 2016 | Oct. 27, 2016 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |
Purchase price |  | $ 7,901,000 |
Cash paid in purchase price |  | 5,395,000 |
Deferred cash payment on business acquisition |  |  | $ 1,144,000
Contingent consideration, current |  |  | $ 1,362,000
Intangible assets, useful life | 7 years |  |
Tax deductible goodwill |  | $ 328,000 |

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