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MARKETABLE SECURITIES (Detail Textuals)
 3 Months Ended
Mar. 31, 2015
Schedule of Available-for-sale Securities [Line Items]  
Period of current marketable securities less than 12 months
Period of non-current marketable securities greater than 12 months
Maturity term of non-current marketable securities 2016 and 2021
Municipal Obligations | A- or higher  
Schedule of Available-for-sale Securities [Line Items]  
Period of maturity debt obligations less than one year to over 6 years
Corporate Obligations | A- or higher  
Schedule of Available-for-sale Securities [Line Items]  
Period of maturity debt obligations one to six years