XML 35 R23.htm IDEA: XBRL DOCUMENT

Sale of Investments in Unconsolidated Entities	12 Months Ended
Sale of Investments in Unconsolidated Entities	Dec. 31, 2011
Sale of Investments in Unconsolidated Entities [Abstract]
Sale of Investments in Unconsolidated Entities	Sale of Investments in Unconsolidated Entities On December 14, 2009, Broadcom Corporation completed the acquisition of Dune Networks, Inc., a privately held company in which MRV held a $0.5 million cost based investment. MRV recorded a $3.5 million gain on sale of the investment for the year ended December 31, 2010. MRV received the cash proceeds from the sale, less amounts retained in escrow, in the first quarter of 2010, and received the escrowed funds in the third quarter of 2011.