SUBSEQUENT EVENTS (Details) - Subsequent events. - Amended and Restated 2009 Stock Incentive Plan	Oct. 05, 2016 director shares
Subsequent events
Automatic annual increase in authorized number of ordinary shares available for future grant under stock option plan (as a percent)	4.00%
Stock options, non-employee directors
Subsequent events
Number of non-employee directors earned automatic annual stock option grant | director	6
Options granted (in shares) | shares	3,875