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Description of Business and Basis of Presentation	12 Months Ended
Description of Business and Basis of Presentation	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Description of Business MRV Communications, Inc. and subsidiaries ("MRV" or the "Company"), a Delaware corporation, is a global supplier of communications solutions to telecommunications service providers, data center operators, enterprises and governments throughout the world. MRV markets and sells its products worldwide, through a variety of channels, which include a dedicated direct sales force, distributors, value-added-resellers, systems integrators and sales agents. Until the third quarter of 2015, MRV conducted its business along two principal segments: the Network Equipment segment and the Network Integration segment. MRV's Network Equipment segment designs, manufactures, sells and services equipment used by commercial customers, governments, and telecommunications service providers. Products include packet switching, optical transport, infrastructure management equipment and service orchestration and provisioning software. The Network Integration segment, which primarily operated in Italy and provided network system design, integration and distribution services that included products manufactured by third-party vendors, was sold in December 2015. On December 3, 2015, the Company completed the sale of all of its shares of its wholly owned subsidiary, Tecnonet S.p.A.("Tecnonet"), pursuant to a shares purchase agreement, dated as of August 10, 2015 (the "Purchase Agreement") with Maticmind S.p.A, a company incorporated under the laws of Italy. Tecnonet was the last business unit in our Network Integration segment. On February 19, 2016, the Company received a payment of €4.3 million (approximately $4.8 million) representing the post-closing purchase price adjustment pursuant to the Purchase Agreement. Our business involves reliance on foreign-based offices. Several of our divisions, outside subcontractors and suppliers are located in foreign countries, including Argentina, Australia, Canada, Denmark, Germany, Israel, Italy, Netherlands, Philippines, Poland, Russia, Taiwan, Thailand, and the United Kingdom. For the years ended December 31, 2016, 2015 and 2014, external revenues from foreign subsidiaries accounted for 22%, 24% and 26%, respectively, of our total revenue. The majority of our foreign sales are to customers located in the European and Asia Pacific region. Basis of Presentation MRV's fiscal year is based on the calendar year ending on December 31. The accompanying consolidated financial statements include the accounts of MRV and its wholly-owned subsidiaries. All significant intercompany transactions and accounts have been eliminated. MRV consolidates the financial results of less than majority-owned subsidiaries when it has effective control, voting control, or has provided the entity's working capital. When investment by others in these enterprises reduces the Company's voting control below 50%, MRV discontinues consolidation and uses the cost or equity method of accounting for these investments, unless otherwise required.