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Investments (Tables)
3 Months Ended
Mar. 31, 2014
Investments [Abstract]  
Investments Classified as Available-For-Sale

Investments classified as available-for-sale as of March 31, 2014 and December 31, 2013 were comprised of (in thousands):

 

    March 31, 2014     December 31, 2013  
    Amortized
Cost
    Gross
Unrealized
Gains
    Gross
Unrealized
Losses
    Fair Value     Amortized
Cost
    Gross
Unrealized
Gains
    Gross
Unrealized
Losses
    Fair Value  
Auction rate security   $ -     $ -     $ -     $ -     $ 1,175     $ 615     $ -     $ 1,790  
Corporate debt securities     2,907       -       -       2,907       11,806       1       -       11,807  
Total   $ 2,907     $ -     $ -     $ 2,907     $ 12,981     $ 616     $ -     $ 13,597