Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Abstract]

Property, plant and equipment consisted of the following at December 31, 2012 and 2011:

	Estimated Useful Lives	2012		2011
		(in thousands)
Land		$	3,345	$	3,087
Buildings and structures	10 – 40 years		75,664		71,934
Cable and wire	4 – 40 years		175,833		155,884
Equipment and software	2 – 16.7 years		331,374		305,362
Plant in service		$	586,216	$	536,267
Plant under construction			25,469		12,389
Total property, plant and equipment			611,685		548,656
Less accumulated amortization and depreciation			246,211		237,902
Property, plant and equipment, net		$	365,474	$	310,754

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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