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MARKETABLE SECURITIES (Tables)
9 Months Ended
Sep. 30, 2017
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)   2017     2016     2017     2016  
Net realized gain   $ 26     $ 16     $ 38     $ 30  
Reclassification of net realized gains from other comprehensive income   $ 26     $ 16     $ 38     $ 30  
Schedule of gross unrealized gains (losses) on marketable securities
    September 30, 2017     December 31, 2016  
    Gross unrealized     Gross unrealized  
(in thousands)   Gains     (Losses)     Gains     (Losses)  
Municipal Obligations   $ 24     $ (3 )   $ 4     $ (53 )
Corporate Obligations     -       -       -       -  
    $ 24     $ (3 )   $ 4     $ (53 )
Schedule of amortized cost basis, fair value and net unrealized gains on available-for-sale securities
    September 30, 2017     December 31, 2016  
Type of Securities   Amortized
 Cost Basis
    Fair
 Value
    Net 
Unrealized 
Gains
    Amortized
 Cost Basis
    Fair 
Value
    Net
 Unrealized 
Losses
 
(in thousands)                                    
Municipal Obligations   $ 13,485     $ 13,506     $ 21     $ 9,379     $ 9,330     $ (49 )
Corporate Obligations     -       -       -       -       -       -  
Total   $ 13,485     $ 13,506     $ 21     $ 9,379     $ 9,330     $ (49 )