COMMITMENTS AND CONTINGENCIES (Details 2)	12 Months Ended
	Dec. 31, 2017
Site Contingency [Line Items]
Automatic extension term of employment agreements	1 year
Notice period for termination of employment agreements	2 months
Automatic extension of employment agreements in case of change in control	2 years
Period in which increased severance payments are provided in case of change in control	12 months
Minimum
Site Contingency [Line Items]
Effective term of employment agreements	1 year
Maximum
Site Contingency [Line Items]
Effective term of employment agreements	2 years