Strategic Technology Transactions, Goodwill and Purchased Intangible Assets (Tables)

12 Months Ended

Dec. 27, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill by Reportable Segment

Changes in the carrying value of goodwill by reportable segment during the years ended December 27, 2014 and December 28, 2013 were as follows (in thousands):

	Semiconductor Equipment			Microwave Communications			Total Goodwill
Balance, December 29, 2012	$	55,520		$	3,236		$	58,756
Additions net of adjustments		10,930			—			10,930
Impact of currency exchange		1,533			94			1,627
Balance, December 28, 2013		67,983			3,330			71,313
Impact of currency exchange		(4,851	)		(275	)		(5,126	)
Impairment of goodwill - (See Note 3)		—			(3,055	)		(3,055	)
Balance, December 27, 2014	$	63,132		$	—		$	63,132

Purchased Intangible Assets, Subject to Amortization

Purchased intangible assets, subject to amortization are as follows (in thousands):

	December 27, 2014					December 28, 2013
	Gross Carrying Amount		Accumulated Amortization		Remaining Useful Life	Gross Carrying Amount		Accumulated Amortization
Rasco technology	$	29,845	$	22,616	2.0 years	$	33,689	$	21,319
Ismeca technology		27,014		6,879	6.0 years		29,915		3,809
Duma technology		864		864	0.0 years		864		408
	$	57,723	$	30,359		$	64,468	$	25,536