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FAIR VALUE MEASUREMENTS (Tables)
 9 Months Ended
Sep. 30, 2016
FAIR VALUE MEASUREMENTS  
Schedule of the valuation of financial instruments measured at fair value on a recurring basis
    Fair Value Measurements at September 30, 2016 with:  
(in thousands)   Quoted prices 
in active 
markets for 
identical 
assets		     Significant
other observable 
inputs		     Significant 
unobservable
inputs		  
    (Level 1)     (Level 2)     (Level 3)  
Assets:                        
Trading securities   $ -     $ 5,543     $ -  
Available-for-sale securities:                        
Municipal obligations   $ -     $ 38,236     $ -  
Corporate obligations     -       3,463       -  
    $ -     $ 41,699     $ -  
 
    Fair Value Measurements at December 31, 2015 with:  
(in thousands)   Quoted prices 
in active 
markets for 
identical
assets		     Significant 
other observable 
inputs		     Significant 
unobservable 
inputs		  
    (Level 1)     (Level 2)     (Level 3)  
Assets:                        
Trading securities   $ -     $ 6,491     $ -  
Available-for-sale securities:                        
Municipal obligations   $ -     $ 30,996     $ -  
Corporate obligations     -     3,958       -  
    $ -     $ 34,954     $ -