OTHER ASSETS (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Security deposits	$ 5,164	$ 5,508
Restricted cash	4,200	4,127
Maintenance agreements, non-current portion	503	853
Other	701	767
Total	$ 10,568	$ 11,255