SEGMENT INFORMATION, Capital Expenditures by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	$ 222,664	$ 204,752	$ 603,969	$ 629,945
Cable
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	191,617	168,446	511,185	521,026
Lightpath
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	24,083	28,434	70,877	81,401
Other
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	$ 6,964	$ 7,872	$ 21,907	$ 27,518