SEGMENT INFORMATION, Capital Expenditures by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	$ 214,674	$ 239,118	$ 381,305	$ 425,193
Reportable Segments | Cable
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	185,997	207,255	319,568	352,580
Reportable Segments | Lightpath
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	23,062	26,097	46,794	52,967
Reportable Segments | Other
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	$ 5,615	$ 5,766	$ 14,943	$ 19,646