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MARKETABLE SECURITIES - Gross unrealized gains (losses) on marketable securities (Details 1) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Gross unrealized Gains $ 278 $ 229
Gross unrealized (Losses) (2) (16)
Municipal Obligations
   
Schedule of Available-for-sale Securities [Line Items]    
Gross unrealized Gains 270 223
Gross unrealized (Losses) (1) (16)
Corporate obligations
   
Schedule of Available-for-sale Securities [Line Items]    
Gross unrealized Gains 8 6
Gross unrealized (Losses) $ (1)