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COMMITMENTS AND CONTINGENCIES (Details)
Mar. 31, 2012
Commitment With Executive Officers [Member]
 
Loss Contingencies [Line Items]  
Number of executive officers under agreement 5
Multiple of sum of average annual base salary and bonus agreement terms 2
Opposition to European Patent No. 0946958 [Member]
 
Loss Contingencies [Line Items]  
U.S. patents associated with matter
5,844,363, 6,602,540, 6,888,306 and 7,247,073
Opposition to European Patent No. 1449238 [Member]
 
Loss Contingencies [Line Items]  
U.S. patents associated with matter
6,830,828; 6,902,830; 7,001,536; 7,291,406; 7,537,844; and 7,883,787
Pending U.S. patent applications associated with matter
13/009,001, filed on January 19, 2011, and 13/205,290, filed on August 9, 2011
Opposition To European Patent No. 1394870 [Member]
 
Loss Contingencies [Line Items]  
U.S. patents associated with matter
6,303,238; 6,579,632; 6,872,477; 7,279,235; 7,279,237; 7,488,542; 7,563,519; and 7,901,795
Pending U.S. patent applications associated with matter
13/035,051
Invalidation Trial in Korea for Patent No. KR-0998059 [Member]
 
Loss Contingencies [Line Items]  
U.S. patents associated with matter
7,431,968
Opposition to European Patent No. 1390962 [Member]
 
Loss Contingencies [Line Items]  
Pending U.S. patent applications associated with matter
7,009,338 and 7,285,907