Property, Plant and Equipment

9 Months Ended

Sep. 30, 2011

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

3. Property, Plant and Equipment

The components of property, plant and equipment are as follows:

(in thousands)	September 30, 2011		December 31, 2010		September 30, 2010
Land	$	15,402	$	15,424	$	15,427
Land improvements and leasehold improvements		45,753		45,080		44,230
Buildings and storage facilities		144,834		141,349		137,652
Machinery and equipment		188,552		181,650		173,890
Software		10,873		10,306		10,224
Construction in progress		17,323		2,572		7,224
		422,737		396,381		388,647
Less accumulated depreciation and amortization		257,844		245,349		241,463
	$	164,893	$	151,032	$	147,184

Depreciation expense on property, plant and equipment amounted to $15.0 million, $18.7 million and $13.9 million for the nine month period ended September 30, 2011, the year ended December 31, 2010 and the nine month period ended September 30, 2010, respectively.

Railcar assets leased to others

The components of Railcar and other assets leased to others are as follows:

(in thousands)	September 30, 2011		December 31, 2010		September 30, 2010
Railcars leased to others	$	256,219	$	234,667	$	233,537
Less accumulated depreciation		72,873		66,184		63,843
	$	183,346	$	168,483	$	169,694

Depreciation expense on railcar assets leased to others amounted to $10.2 million, $14.0 million and $10.7 million for the nine month period ended September 30, 2011, the year ended December 31, 2010 and the nine month period ended September 30, 2010, respectively.