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OTHER ASSETS (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Security deposits $ 5,769 $ 5,508
Maintenance agreements, non-current portion 766 853
Restricted cash 4,127 4,127
Other 967 767
Total $ 11,629 $ 11,255