Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Information [Abstract]

Schedule Of Revenue From Unaffiliated Customers By Product And Service

(in thousands)	2017		2016		2015
Revenue from unaffiliated customers:
United States	$	322,399	$	329,553	$	345,032
Other Americas		11,377		11,332		12,944
EMEA		220,357		193,141		200,104
Asia Pacific		91,936		98,939		108,083
Total  revenue	$	646,069	$	632,965	$	666,163
(in thousands)	2017		2016		2015
Revenue by class of product and service:
Products	$	210,280	$	223,544	$	257,379
Materials		168,846		156,839		150,740
Services		266,943		252,582		258,044
Total revenue	$	646,069	$	632,965	$	666,163

Schedule Of Intercompany Sales By Geographic Area

	Year Ended December 31, 2017
	Intercompany Sales to
(in thousands)	Americas		Germany		Other EMEA		Asia Pacific		Total
Americas	$	2,169	$	36,914	$	14,775	$	20,388	$	74,246
EMEA		70,709		6,005		13,093		4,945		94,752
Asia Pacific		2,790		—		174		3,936		6,900
Total	$	75,668	$	42,919	$	28,042	$	29,269	$	175,898
	Year Ended December 31, 2016
	Intercompany Sales to
(in thousands)	Americas		Germany		Other EMEA		Asia Pacific		Total
Americas	$	3,013	$	28,881	$	10,958	$	21,639	$	64,491
EMEA		65,209		3,365		8,921		6,091		83,586
Asia Pacific		3,046		—		369		3,959		7,374
Total	$	71,268	$	32,246	$	20,248	$	31,689	$	155,451
	Year Ended December 31, 2015
	Intercompany Sales to
(in thousands)	Americas		Germany		Other EMEA		Asia Pacific		Total
Americas	$	3,073	$	36,552	$	17,133	$	17,602	$	74,360
EMEA		58,489		4,232		9,643		6,172		78,536
Asia Pacific		3,027		4		79		3,585		6,695
Total	$	64,589	$	40,788	$	26,855	$	27,359	$	159,591

Schedule Of Capital Expenditures By Geographic Area

(in thousands)	2017		2016		2015
Income (loss) from operations:
Americas	$	(71,951)	$	(53,725)	$	(596,283)
EMEA		(292)		(1,613)		(71,201)
Asia Pacific		20,173		19,591		27,432
Subtotal		(52,070)		(35,747)		(640,052)
Inter-segment elimination		(1,903)		(2,673)		(1,872)
Total	$	(53,973)	$	(38,420)	$	(641,924)
(in thousands)	2017		2016		2015
Depreciation and amortization:
Americas	$	25,484	$	25,892	$	43,613
EMEA		31,135		29,946		34,596
Asia Pacific		5,422		4,697		4,860
Total	$	62,041	$	60,535	$	83,069
(in thousands)	2017		2016		2015
Capital expenditures:
Americas	$	23,925	$	8,172	$	14,062
EMEA		5,227		5,947		7,469
Asia Pacific		1,729		2,448		868
Total	$	30,881	$	16,567	$	22,399

Schedule Of Long-Lived Assets By Geographical Area

	At December 31,
(in thousands)	2017		2016		2015
Assets:
Americas	$	329,550	$	345,412	$	382,738
EMEA		454,319		382,163		406,084
Asia Pacific		112,895		121,578		103,137
Total	$	896,764	$	849,153	$	891,959
	At December 31,
(in thousands)	2017		2016		2015
Cash and cash equivalents:
Americas	$	51,475	$	105,750	$	98,913
EMEA		52,642		44,877		34,388
Asia Pacific		32,227		34,320		22,342
Total	$	136,344	$	184,947	$	155,643
	At December 31,
(in thousands)	2017		2016		2015
Long-lived assets:
Americas	$	94,319	$	96,016	$	113,364
EMEA		306,988		262,543		285,980
Asia Pacific		57,035		57,644		60,148
Total	$	458,342	$	416,203	$	459,492