Note 3 - Goodwill and Purchased Intangible Assets (Tables)

12 Months Ended

Dec. 30, 2017

Notes Tables

Schedule of Goodwill [Table Text Block]

	Total Goodwill
Balance December 26, 2015	$	60,264
Impact of currency exchange		(1,415	)
Balance December 31, 2016		58,849
Additions		2,654
Impact of currency exchange		4,110
Balance December 30, 2017	$	65,613

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 30, 2017						December 31, 2016
					Remaining
	Gross Carrying		Accumulated		Useful Life		Gross Carrying		Accumulated
	Amount		Amortization		(years)		Amount		Amortization
Developed technology	$	20,780	$	12,623		3.3	$	19,194	$	9,597
Customer relationships		7,934		4,838		3.0		6,996		3,644
Trade names		6,185		972		12.2		5,354		468
Covenant not-to-compete		313		31		9.0		-		-
	$	35,212	$	18,464			$	31,544	$	13,709