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MARKETABLE SECURITIES (Tables)
9 Months Ended
Sep. 30, 2016
MARKETABLE SECURITIES  
Schedule of net realized gains and reclassification of net realized gains from other comprehensive income
    Three months ended     Nine months ended  
    September 30,     September 30,  
(in thousands)   2016     2015     2016     2015  
Net realized gain   $ 16     $ 12     $ 30     $ 44  
Reclassification of net realized gains from other comprehensive income   $ 16     $ 12     $ 30     $ 44  
Schedule of gross unrealized gains (losses) on marketable securities
    as of September 30, 2016     as of December 31, 2015  
  Gross unrealized   Gross unrealized
(in thousands)   Gains     (Losses)     Gains     (Losses)  
Municipal Obligations   $ 61     $ (36 )   $ 4     $ (4 )
Corporate Obligations     32       -       22       (25 )
    $ 93     $ (36 )   $ 26     $ (29 )
Schedule of amortized cost basis, fair value and net unrealized gains on available-for-sale securities
    as of September 30, 2016     as of December 31, 2015  
Type of Securities   Amortized
Cost Basis
    Fair
Value
    Net
Unrealized
Gains
    Amortized
Cost Basis
    Fair
Value
    Net
Unrealized
Gains
(Losses)
 
(in thousands)                                    
Municipal Obligations   $ 38,211     $ 38,236     $ 25     $ 30,996     $ 30,996     $ 0  
Corporate Obligations     3,431       3,463       32       3,961       3,958       (3 )
Total   $ 41,642     $ 41,699     $ 57     $ 34,957     $ 34,954     $ (3 )