Property, Plant and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, plant and equipment consist of the following:



	December 31,
	2018			2017
	(In thousands)
Land	$	222,884		$	224,894
Land use rights	26,845			26,845
Buildings and improvements	1,523,065			1,384,846
Machinery and equipment	5,196,930			4,926,432
Capital lease machinery and equipment	25,874			11,859
Software and computer equipment	213,440			200,500
Furniture, fixtures and other equipment	17,204			15,722
Construction in progress	44,381			104,910
Total property, plant and equipment	7,270,623			6,896,008
Less accumulated depreciation and amortization	(4,620,175		)	(4,200,943		)
Total property, plant and equipment, net	$	2,650,448		$	2,695,065

The following table summarizes our depreciation expense:



	For the Year Ended December 31,
	2018		2017		2016
	(In thousands)
Depreciation expense	$	570,304	$	580,172	$	552,989

As part of our plan to consolidate factory operations in Korea, we sold the land and buildings comprising our K1 factory in May 2017 for $142.4 million. We received 10% of the sale price at signing in November 2016 and the balance at closing, at which time we recognized a pre-tax gain of $108.1 million.