Goodwill and Intangible Assets (Tables)

6 Months Ended

Jul. 01, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill by Reportable Segments

Goodwill by reportable segment was as follows (in thousands):

	Probe Cards		Systems			Total
Goodwill, gross, as of December 26, 2015	$	30,731	$	—		$	30,731
Additions - Cascade Microtech acquisition	141,751		16,390			158,141
Foreign currency translation	—		(862		)	(862		)
Goodwill, gross, as of December 31, 2016	172,482		15,528			188,010
Foreign currency translation	—		1,182			1,182
Goodwill, gross, as of July 1, 2017	$	172,482	$	16,710		$	189,192

Schedule of Intangible Assets

Intangible assets were as follows (in thousands):

	July 1, 2017						December 31, 2016
Other Intangible Assets	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Existing developed technologies	$	143,590	$	66,516	$	77,074	$	142,656	$	56,085	$	86,571
Trade name	12,021		4,356		7,665		11,915		2,984		8,931
Customer relationships	40,140		13,574		26,566		39,860		10,845		29,015
Backlog	18,071		17,597		474		17,843		15,752		2,091
	$	213,822	$	102,043	$	111,779	$	212,274	$	85,666	$	126,608

Schedule of Amortization Expense

Amortization expense was included in our Condensed Consolidated Statements of Operations as follows (in thousands):

	Three Months Ended				Six Months Ended
	July 1, 2017		June 25, 2016		July 1, 2017		June 25, 2016
Cost of revenues	$	5,613	$	2,079	$	11,938	$	4,157
Selling, general and administrative	2,031		651		4,056		1,302
	$	7,644	$	2,730	$	15,994	$	5,459

Schedule of Estimated Amortization of Intangible Assets

The estimated amortization of intangible assets over the next five years is as follows (in thousands):

Fiscal Year	Amount
Remainder of 2017	$	14,885
2018	28,545
2019	25,881
2020	23,812
2021	13,064
Thereafter	5,592
	$	111,779