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OTHER ASSETS (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Security deposits $ 5,508 $ 5,341
Maintenance agreements, non-current portion 853 1,570
Restricted cash 4,127 4,801
Other 767 1,441
Total $ 11,255 $ 13,153