Note 2 - Business Acquisitions, Goodwill and Purchased Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

Cash paid to Kita shareholders	$	15,000
Fair value of contingent consideration		823
Total purchase price	$	15,823

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

	Fair Value of Contingent Consideration
Balance, December 31, 2016	$	-
Fair value of contingent consideration at acquisition date		823
Mark-to-market adjustments charged to expense		1,423
Impact of currency exchange		7
Balance, December 30, 2017		2,253
Mark-to-market adjustments charged to expense		428
Settlement of contingent consideration		(1,500	)
Impact of currency exchange		99
Balance, June 30, 2018	$	1,280

Schedule of Goodwill [Table Text Block]

	Goodwill
Balance, December 31, 2016	$	58,849
Additions, net		2,654
Impact of currency exchange		4,110
Balance, December 30, 2017		65,613
Impact of currency exchange		(848	)
Balance, June 30, 2018	$	64,765

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

	June 30, 2018						December 30, 2017
					Remaining
					Weighted
					Average
	Gross				Amort.		Gross
	Carrying Amount		Accum. Amort.		Period (in years)		Carrying Amount		Accum. Amort.
Developed technology	$	20,498	$	13,721		2.9	$	20,780	$	12,623
Customer relationships		7,836		5,281		2.5		7,934		4,838
Trade names		6,084		1,187		11.7		6,185		972
Covenant not-to-compete		318		48		8.5		313		31
Total intangible assets	$	34,736	$	20,237			$	35,212	$	18,464