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401(k) Plan	12 Months Ended
401(k) Plan	Dec. 31, 2011
401(k) Plan [Abstract]
401(k) Plan	401(k) Plan The Company sponsors a 401(k) plan to provide retirement benefits for its U.S. employees. As allowed under Section 401(k) of the Internal Revenue Code, MRV's plan provides for tax-deferred salary contributions for eligible employees. The Plan allows employees to contribute a portion of their annual compensation to the plan on a pretax basis. The Company currently matches pretax contributions up to 50% of the first 6% of eligible earnings contributed by employees, however the Company had reduced its matching rate to 25% for 2010. Matching contributions to the Plan totaled $471,000, $286,000, and $630,000 for the years ended December 31, 2011, 2010 and 2009, respectively.

The entire disclosure for pension and other postretirement benefits.

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