Property, Plant and Equipment

6 Months Ended

Jun. 30, 2016

Property, Plant and Equipment [Abstract]

Property, Plant And Equipment

11.    Property, Plant and Equipment

Property, plant and equipment consist of the following:

	June 30, 2016			December 31, 2015
	(In thousands)
Land	$	245,116		$	237,815
Land use rights	26,845			26,845
Buildings and improvements	1,033,875			1,010,201
Machinery and equipment	4,340,987			4,226,401
Software and computer equipment	204,683			197,266
Furniture, fixtures and other equipment	21,708			21,259
Construction in progress	434,891			352,607
Total property, plant and equipment	6,308,105			6,072,394
Less accumulated depreciation and amortization	(3,682,982		)	(3,493,377		)
Total property, plant and equipment, net	$	2,625,123		$	2,579,017

The following table summarizes our depreciation expense:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2016		2015		2016		2015
	(In thousands)
Depreciation expense	$	137,451	$	123,730	$	273,959	$	247,851

As of June 30, 2016 and December 31, 2015, construction in progress reflects $363.9 million and $312.1 million, respectively, of costs for K5, including capitalized interest of $23.0 million and $18.7 million, respectively.