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Operating Segment, Geographic and Significant Customer Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Information

Segment information for the years ended December 31, 2018, 2017, and 2016 is as follows:

		Semiconductor Test				System Test				Industrial Automation				Wireless Test				Corporate And Other				Consolidated
		(in thousands)
2018
Revenues		$	1,492,417			$	216,132			$	261,452			$	132,006			$	(1,205	)		$	2,100,802
Income (loss) before taxes (1)(2)			397,645				48,857				7,670				29,052				(15,423	)			467,801
Total assets (3)			669,452				88,098				607,502				77,570				1,263,984				2,706,606
Property additions			94,496				3,469				11,188				5,226				—				114,379
Depreciation and amortization expense			58,095				6,430				36,755				5,328				6,616				113,224
2017
Revenues		$	1,662,549			$	192,135			$	170,056			$	111,866			$	—			$	2,136,606
Income (loss) before taxes (1)(2)			491,361				10,305				8,763				17,350				(3,368	)			524,411
Total assets (3)			597,480				97,018				368,037				59,912				1,987,098				3,109,545
Property additions			87,920				5,976				7,044				4,435				—				105,375
Depreciation and amortization expense			58,901				6,646				25,711				5,392				11,425				108,075
2016
Revenues		$	1,368,169			$	189,846			$	99,031			$	96,204			$	—			$	1,753,250
Income (loss) before taxes (1)(2)			311,939				28,916				(16,783	)			(371,409	)			(7,723	)			(55,060	)
Total assets (3)			557,546				110,361				317,635				62,366				1,714,585				2,762,493
Property additions			70,543				3,788				6,755				4,186				—				85,272
Depreciation and amortization expense			58,087				6,551				26,869				25,921				2,581				120,009

(1) Included in Corporate and Other are: contingent consideration adjustments, pension and postretirement plans actuarial gains (losses), severance charges, impairment of fixed assets and expenses related to the Japan earthquake, property insurance recovery, interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations and acquisition related charges.

(2) Included in income (loss) before taxes are charges and credits related to restructuring and other, and inventory charges. In 2016, loss before income taxes in Wireless Test also included charges related to goodwill and acquired intangible assets impairment.

(3) Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.

Revenues by Country

Information as to Teradyne’s revenues by country is as follows:

		2018				2017				2016
		(in thousands)
Revenues from customers (1):
Taiwan		$	516,322			$	687,031			$	653,076
China			348,942				260,451				174,876
United States			282,869				252,516				221,948
Europe			223,207				163,715				117,671
Korea			163,224				206,819				147,882
Japan			158,281				169,093				135,978
Malaysia			122,797				124,048				103,472
Singapore			108,618				101,085				73,172
Philippines			77,996				105,850				54,705
Thailand			59,184				29,566				43,097
Rest of the World			39,362				36,432				27,373
		$	2,100,802			$	2,136,606			$	1,753,250

(1) Revenues attributable to a country are based on location of customer site.

Long-Lived Assets by Geographic Area

Long-lived assets by geographic area:

		United States				Foreign(1)				Total
		(in thousands)
December 31, 2018		$	209,368			$	70,453			$	279,821
December 31, 2017		$	198,855			$	69,592			$	268,447

(1) As of December 31, 2018 and 2017, long-lived assets attributable to Singapore were $19.4 million and $23.6 million, respectively.

Wireless Test

Schedule of Segment Reporting Information by Segment Charges

Included in the Wireless Test segment are charges in the following accounts:

		For the Year Ended December 31,
		2018				2017				2016
		(in thousands)
Cost of revenues—inventory charge		$	2,565			$	2,190			$	7,207
Restructuring and other—lease impairment			—				972				—
Restructuring and other—employee severance			—				—				2,650
Goodwill impairment charge			—				—				254,946
Intangible assets impairment charge			—				—				83,339

Semiconductor Test

Schedule of Segment Reporting Information by Segment Charges

Included in the Semiconductor Test segment are charges in the following accounts:

		For the Year Ended December 31,
		2018				2017				2016
		(in thousands)
Restructuring and other—employee severance		$	8,429			$	1,779			$	2,860
Cost of revenues—inventory charge			6,822				4,606				9,656
Restructuring and other—impairment of fixed assets			—				1,124				—

System Test

Schedule of Segment Reporting Information by Segment Charges

Included in the System Test segment are charges in the following accounts:

		For the Year Ended December 31,
		2018				2017				2016
		(in thousands)
Cost of revenues—inventory charge		$	1,175			$	1,918			$	630

Industrial Automation

Schedule of Segment Reporting Information by Segment Charges

Included in the Industrial Automation segment are charges in the following accounts:

		For the Year Ended December 31,
		2018				2017				2016
		(in thousands)
Restructuring and other—acquisition related expenses and compensation		$	1,163			$	—			$	—
Cost of revenues—inventory charge			680				—				—
Restructuring and other—employee severance			—				1,414				585

Corporate And Eliminations

Schedule of Segment Reporting Information by Segment Charges

Included in Corporate and Other are charges and credits in the following accounts:

		For the Year Ended December 31,
		2018				2017				2016
		(in thousands)
Restructuring and other—MiR contingent consideration adjustment		$	17,666			$	—			$	—
Restructuring and other—Universal Robots contingent consideration adjustment			(16,679	)			7,820				15,346
Restructuring and other—acquisition related expenses			3,422				—				—
Restructuring and other			872				—				—
Restructuring and other—expense related to Japan earthquake and impairment of fixed assets			—				755				5,051
Restructuring and other—property insurance recovery			—				(5,064	)			(5,051	)

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