FAIR VALUE MEASUREMENTS (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets:
Cash equivalents	$ 17,305	$ 10,006
Marketable securities - available for sale		7,180
Total assets	17,305	17,186
Quoted Prices In Active Markets (Level 1) [Member]
Assets:
Cash equivalents	17,305	10,006
Marketable securities - available for sale		5,926
Total assets	$ 17,305	15,932
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents
Marketable securities - available for sale		1,254
Total assets		$ 1,254