Note 3 - Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

Property, Plant and Equipment [Table Text Block]

	June 30 , 2016			December 31, 2015
Property and equipment, net:
Computer equipment	$	10,209		$	9,188
Software		1,828			1,713
Furniture, fixtures and equipment		963			907
Leasehold improvements		1,123			1,126
Test equipment		9,667			7,214
Construction-in-progress		7,432			4,777
		31,222			24,925
Less: accumulated depreciation		(15,146	)		(13,600	)
Total	$	16,076		$	11,325

Schedule of Goodwill [Table Text Block]

	June 30 , 2016
Balance as of December 31, 2015	$	215
Adjustment		—
Balance as of June 30, 2016	$	215

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

				June 30 , 2016							December 31, 2015
	Amortization Period (Years)			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Acquired identifiable intangibles:
Customer relationships	1	-	9	$	5,920	$	(3,686	)	$	2,234	$	5,920	$	(3,547	)	$	2,373
Developed technology	4	-	6		14,100		(12,167	)		1,933		14,100		(11,976	)		2,124
Tradename	2	-	4		610		(558	)		52		610		(533	)		77
Backlog		1			100		(96	)		4		100		(46	)		54
Patent	7	-	10		1,800		(1,420	)		380		1,800		(1,400	)		400
Other acquired intangibles		4			255		(255	)		-		255		(255	)		-
Total				$	22,785	$	(18,182	)	$	4,603	$	22,785	$	(17,757	)	$	5,028

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Period Ending June 30,
2016 (remaining 6 months)	$	380
2017		728
2018		701
2019		701
2020		701
2021 and thereafter		1,392
Total future amortization expense	$	4,603