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Property, Plant and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment

F.    PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment, net consisted of the following at December 31, 2017 and 2016:

		2017				2016
		(in thousands)
Land		$	16,561			$	16,561
Buildings			98,369				98,031
Machinery and equipment			647,961				601,835
Furniture and fixtures, and software			88,539				82,897
Leasehold improvements			49,540				46,612
Construction in progress			13,522				3,032
			914,492				848,968
Less: accumulated depreciation			646,045				595,147
		$	268,447			$	253,821

Depreciation of property, plant and equipment for the years ended December 31, 2017, 2016, and 2015 was $66.1 million, $64.8 million, and $68.2 million, respectively. As of December 31, 2017 and 2016, the gross book value included in machinery and equipment for internally manufactured test systems being leased by customers was $18.1 million and $19.4 million, respectively. As of December 31, 2017 and 2016, the accumulated depreciation on these test systems was $13.7 million and $10.5 million, respectively.

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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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