GOODWILL (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill	$ 130,313	$ 130,313
Re-allocations
Goodwill [Line Items]
Goodwill
Data center services
Goodwill [Line Items]
Goodwill	$ 38,200
Operating segments | Data center services
Goodwill [Line Items]
Goodwill		90,849
Operating segments | Data center services | Re-allocations
Goodwill [Line Items]
Goodwill	$ (90,849)
Operating segments | IP services
Goodwill [Line Items]
Goodwill		$ 39,464
Operating segments | IP services | Re-allocations
Goodwill [Line Items]
Goodwill	$ (39,464)
Operating segments | Data center and network services
Goodwill [Line Items]
Goodwill	77,631
Operating segments | Data center and network services | Re-allocations
Goodwill [Line Items]
Goodwill	77,631
Operating segments | Cloud And Hosting Services
Goodwill [Line Items]
Goodwill	52,682
Operating segments | Cloud And Hosting Services | Re-allocations
Goodwill [Line Items]
Goodwill	$ 52,682