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MARKETABLE SECURITIES (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2010
MARKETABLE SECURITIES [Abstract]      
Cost $ 795   $ 0
Accumulated net unrealized loss (245) 0 0
Fair value 550 0 0
Net unrealized loss on marketable securities included in comprehensive income $ (245)