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MARKETABLE SECURITIES - Net realized gains and reclassification (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Available-For-Sale Securities        
Net realized gain (loss) $ 3 $ (24) $ 5 $ 56
Reclassification of net realized gains from other comprehensive income $ 3 $ (24) $ 5 $ 56