Property, Plant and Equipment

9 Months Ended

Sep. 30, 2011

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

3.  Property, Plant and Equipment

Property, plant and equipment consisted of the following:

	September 30, 2011		December 31, 2010
Plant in service	$	516,853	$	466,658
Plant under construction		18,775		25,515
		535,628		492,173
Less accumulated amortization and depreciation		235,518		212,122
Net property, plant and equipment	$	300,110	$	280,051

During the third quarter of 2011, the Company traded in certain PCS equipment for equipment with additional capacity and received credits of $2.2 million against the purchase price of the new equipment.  The Company recognized a gain of $1.4 million on the trade-in.