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Nature of Operations | 12 Months Ended
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Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Nature of Operations | NATURE OF OPERATIONS Energy Focus, Inc. and its subsidiaries engage in the design, development, manufacture, and marketing of energy-efficient lighting. We operate in a single industry segment, developing and selling our energy-efficient light-emitting diode (“LED”) lighting products into the military maritime, and commercial markets. We have aligned our resources and focused our efforts on the sale of LED lighting products, in particular our military and commercial tubular LED (“TLED”) lines of products, into targeted vertical markets. During 2014, we shifted our focus away from the turnkey solutions business, which had historically incurred lower gross margins. We completed all outstanding solutions-based projects in the first quarter of 2015 and fully exited the business as of September 2015. In August 2015, we sold our United Kingdom subsidiary, Crescent Lighting Limited (“CLL”). In 2013, we sold and discontinued our pool products business. As a result of exiting the turnkey solutions, CLL, and the pool products businesses, we have eliminated all net sales and expenses associated with both businesses from the Consolidated Statements of Operations and reported the net losses as discontinued operations. Please refer to Note 3, “Discontinued Operations,” for more information on our disposition of these businesses. Additionally, product development is a key focus for us. Our product development team is dedicated to developing and designing leading-edge technology LED lighting products, and we have recently opened a product development center in Taiwan. During 2013, we curtailed our efforts on bidding on research contracts and grants to focus on product development.

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- Definition The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6003-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=64851502&loc=SL51803626-108592 + Details
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