Property Plant and Equipment

6 Months Ended

Jun. 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)	June 30, 2011		December 31, 2010		June 30, 2010
Land	$	15,424	$	15,424	$	15,301
Land improvements and leasehold improvements		45,634		45,080		43,701
Buildings and storage facilities		142,864		141,349		133,445
Machinery and equipment		186,245		181,650		171,921
Software		10,603		10,306		10,115
Construction in progress		6,696		2,572		7,871
		407,466		396,381		382,354
Less accumulated depreciation and amortization		253,824		245,349		238,189
	$	153,642	$	151,032	$	144,165

Depreciation expense on property, plant and equipment amounted to $9.9 million, $18.7 million and $9.2 million for the six month period ended June 30, 2011, the twelve month period ended December 31, 2010 and the six month period ended June 30, 2010, respectively.

Railcar assets leased to others

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

(in thousands)	June 30, 2011		December 31, 2010		June 30, 2010
Railcars leased to others	$	248,030	$	234,667	$	230,442
Less accumulated depreciation		69,889		66,184		61,111
	$	178,141	$	168,483	$	169,331

Depreciation expense on railcar assets leased to others amounted to $6.7 million, $14.0 million and $7.4 million for the six month period ended June 30, 2011, the twelve month period ended December 31, 2010 and the six month period ended June 30, 2010, respectively.