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OTHER ASSETS (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Security deposits, net $ 6,000 $ 7,277
Debt issuance costs, net 7,281 8,099
Maintenance agreements, non-current portion 2,888 3,324
Restricted cash 3,026 3,022
Other 1,037 545
Total $ 20,232 $ 22,267