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

3 Months Ended

Mar. 31, 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					Mark-to-Market				Fair Value of
Consideration		Settlement of			Adjustment		Impact of		Consideration at
Recognized at		Contingent			Charged to		Currency		March 31,
Acquisition Date		Consideration			Expense		Exchange		2018
$	823	$	(1,500	)	$	1,276	$	141	$	740

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		1,171
Balance, March 31, 2018	$	66,784

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

	March 31, 2018						December 30, 2017
					Remaining
					Weighted
	Gross				Average		Gross
	Carrying		Accum.		Amort.		Carrying		Accum.
	Amount		Amort.		Period (in years)		Amount		Amort.
Developed technology	$	21,263	$	13,567		3.1	$	20,780	$	12,623
Customer relationships		8,131		5,215		2.8		7,934		4,838
Trade names		6,347		1,118		11.9		6,185		972
Covenant not-to-compete		331		41		8.8		313		31
Total intangible assets	$	36,072	$	19,941			$	35,212	$	18,464