Goodwill and Purchased Intangible Assets (Tables)

6 Months Ended

Jun. 29, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Indefinite Lived Intangible Assets

Details of goodwill and other intangible assets were as follows (in thousands):

	June 29, 2018						December 29, 2017
			Intangible						Intangible
	Goodwill		Assets		Total		Goodwill		Assets		Total
Carrying amount	$	85,248	$	29,392	$	114,640	$	85,248	$	31,587	$	116,835

Details of Purchased Intangible Assets

Details of purchased intangible assets were as follows (in thousands):

	As of June 29, 2018							As of December 29, 2017
	Gross							Gross
	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying		Useful
	Amount		Amortization			Value		Amount		Amortization			Value		Life
AIT
Customer relationships	$	19,000	$	(18,307	)	$	693	$	19,000	$	(17,998	)	$	1,002		7
Tradename		1,900		(1,900	)		—		1,900		(1,900	)		—		6
Intellectual property/know-how		1,600		(1,371	)		229		1,600		(1,257	)		343		7
Thermal
Customer relationships		9,900		(3,383	)		6,517		9,900		(2,887	)		7,013		10
Tradename		1,170		(1,170	)		—		1,170		(1,170	)		—		6
Intellectual property/know-how		12,300		(4,712	)		7,588		12,300		(4,023	)		8,277	8-12
FDS
Customer relationships		8,800		(3,422	)		5,378		8,800		(2,835	)		5,965		7.5
UCT
Tradename		8,987		—			8,987		8,987		—			8,987	*
Total	$	63,657	$	(34,265	)	$	29,392	$	63,657	$	(32,070	)	$	31,587

* The Company concluded that the UCT tradename intangible asset life is indefinite and is therefore not amortized but is reviewed for impairment at least annually and whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable.

Future Estimated Amortization Expense

As of June 29, 2018, future estimated amortization expense is expected to be as follows (in thousands):

	Amortization
	Expense
2018 (remaining in year)	$	2,196
2019		4,040
2020		3,543
2021		3,543
2022		3,543
Thereafter		3,540
Total	$	20,405