SEGMENT INFORMATION, Capital Expenditures by Reportable Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	$ 166,631	$ 186,075
Reportable Segments | Cable
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	133,571	145,325
Reportable Segments | Lightpath
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	23,732	26,870
Reportable Segments | Other
Segment Reporting Information, Capital Expenditures [Abstract]
Capital expenditures	$ 9,328	$ 13,880