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Goodwill | 12 Months Ended
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Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill The changes in the carrying value of goodwill were as follows (in thousands):
|  | Amount
Balance as of December 31, 2016 |  | $ | 95,280 |
Acquisition of ViDi Systems, S.A. |  | 18,333 |
Acquisition of GVi Ventures, Inc. |  | 1,476 |
Adjustment to EnShape goodwill |  | (1,881 | )
Balance as of December 31, 2017 |  | 113,208 |
Balance as of December 31, 2018 |  | $ | 113,208 |
Refer to Note 21 to the Consolidated Financial Statements for further information regarding acquisitions. For its 2018 analysis of goodwill, management elected to perform a qualitative assessment. Based upon this assessment, management believes that it is more likely than not that the fair value of the reporting unit exceeds its carrying amount. Factors that management considered in the qualitative assessment include macroeconomic conditions, industry and market considerations, overall financial performance (both current and projected), changes in management or strategy, changes in the composition or carrying amount of net assets, and market capitalization.

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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