Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

A summary of property, plant and equipment is shown below (in thousands):

	Estimated Life	December 31, 2014			December 31, 2013
	(in years)
Land	—	$	34,932		$	35,585
Buildings	40	199,159			191,348
Central office equipment	7 – 10	604,621			559,304
Outside communications plant	15 – 35	1,124,865			1,091,238
Furniture, vehicles and other work equipment	5 – 15	224,728			197,439
Plant under construction	—	90,979			93,734
Other	—	19,860			18,881
Total property, plant and equipment		2,299,144			2,187,529
Less: Accumulated depreciation		(1,085,415		)	(886,237		)
Net property, plant and equipment		$	1,213,729		$	1,301,292