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Property, plant and equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Property, plant and equipment

Property, plant and equipment, at December 31, consist of the following:

	2017				2016
Land and improvements	$	41,823			$	42,654
Buildings and improvements	331,735				330,254
Machinery and equipment	1,398,687				1,374,551
Construction in progress	22,517				21,106
	1,794,762				1,768,565
Less accumulated depreciation	(822,846		)		(742,280		)
Property, plant and equipment - net	$	971,916			$	1,026,285

For the years ended December 31, 2017, 2016 and 2015, we recorded depreciation and amortization expense of $84,249, $84,780 and $80,117, respectively. See Note 3. Helguvik and Ravenswood gains and losses regarding impairment of our Helguvik project.

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- References

No definition available.

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- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-URI http://asc.fasb.org/topic&trid=2155823

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