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Segment Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Information	19.  Segment Information In the second quarter of 2019, management determined, with the approval of the Company’s Board of Directors and Chief Operating Decision Maker (“CODM”), Dr. Vinciarelli, the Company would report as one segment, rather than under the three segment approach employed since 2007. The Company’s strategy has evolved with a transition in organizational focus, emphasizing investment in Advanced Products, targeting high growth market segments with a low-mix, high-volume operational model, while maintaining a profitable business in mature market segments we serve with Brick Products with a high-mix, low-volume operational model. Dr. Vinciarelli and management began to make incremental changes in management practices and organizational structure based on a management plan established in 2018 for the definitive reconfiguration of the three business units into one business focused on the Advanced Products and Brick Products product line categorizations, including three significant changes: the merger of Picor with and into Vicor, which was completed on May 30, 2018; the reconfiguration of the Company’s internal reporting systems, which was completed on December 31, 2018; and the merger of VI Chip with and into Vicor, which, as stated, was completed on June 28, 2019. Our CODM now determines the allocation of resources of the Company based upon the two product groupings, which constitute one segment. Both product lines are built in the Company’s manufacturing facility in Andover, Massachusetts employing similar processing and production techniques, and are supported by the same sales and marketing organizations. As such, the Company has conformed the segment reporting to the new reporting structure utilized by the CODM. Accordingly, three-segment information for prior periods has not been presented, to conform with the new presentation.

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No definition available.

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- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

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