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INVESTMENTS (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Available-for-sale Securities, Fair Value less than 1 Year $ 1,235 $ 3,160
Available-for-sale Securities, Unrealized Losses less than 1 Year (11) (180)
Available-for-sale Securities, Fair Value greater than 1 Year 0 1,693
Available-for-sale Securities, Unrealized Losses greater than 1 Year 0 (86)
Available For Sale Securities, Total Unrealized Losses (11) (266)
Corporate Debt Securities [Member]
   
Available-for-sale Securities, Fair Value less than 1 Year   2,760
Available-for-sale Securities, Unrealized Losses less than 1 Year   (178)
Available-for-sale Securities, Fair Value greater than 1 Year   1,693
Available-for-sale Securities, Unrealized Losses greater than 1 Year   (86)
Available For Sale Securities, Total Unrealized Losses   (264)
Mortgage-Backed Securities, Issued By Us Government Sponsored Enterprises [Member]
   
Available-for-sale Securities, Fair Value less than 1 Year   400
Available-for-sale Securities, Unrealized Losses less than 1 Year   (2)
Available-for-sale Securities, Fair Value greater than 1 Year   0
Available-for-sale Securities, Unrealized Losses greater than 1 Year   0
Available For Sale Securities, Total Unrealized Losses   (2)
Mutual Funds [Member]
   
Available-for-sale Securities, Fair Value less than 1 Year 1,235  
Available-for-sale Securities, Unrealized Losses less than 1 Year (11)  
Available-for-sale Securities, Fair Value greater than 1 Year 0  
Available-for-sale Securities, Unrealized Losses greater than 1 Year 0  
Available For Sale Securities, Total Unrealized Losses $ (11)