SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Financial Assets Measured at Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Total Fair Value [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 11,936	$ 16,776
Total Fair Value [Member] | Money market account [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	241	149
Total Fair Value [Member] | Corporate debt securities [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4,683	6,692
Total Fair Value [Member] | Government and agency securities [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	7,012	9,935
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	11,936	16,776
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money market account [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	241	149
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate debt securities [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4,683	6,692
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Government and agency securities [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 7,012	$ 9,935