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OTHER ASSETS (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Security deposits, net $ 5,341 $ 7,277
Debt issuance costs, net 6,184 8,099
Maintenance agreements, non-current portion 1,570 3,324
Restricted cash 4,801 3,022
Other 1,441 545
Total $ 19,337 $ 22,267