Note 4 - BALANCE SHEET COMPONENTS (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

Property and equipment, net consist of the following (in thousands):

	March 31,		December 31,
	2022		2021
Computer equipment	$	11,887	$	11,924
Software		5,411		5,419
Furniture, fixtures and equipment		2,503		2,506
Leasehold improvements		6,266		6,272
Laboratory and other equipment		4,171		3,981
Test equipment		28,060		24,452
Construction-in-progress		21,263		22,158
		79,561		76,712
Less: accumulated depreciation and amortization		(42,717)		(41,417)
Total	$	36,844	$	35,295

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

Intangible assets, net, consisted of the following (in thousands):

		March 31, 2022						December 31, 2021
	Amortization	Gross				Net		Gross				Net
	Period	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	(Years)	Amount		Amortization		Amount		Amount		Amortization		Amount
Acquired identifiable intangibles:
Customer relationships	1-10	$	9,407	$	(6,202)	$	3,205	$	9,407	$	(6,041)	$	3,366
Developed technology	4-9		33,635		(17,848)		15,787		33,635		(17,250)		16,385
Tradename and trademarks	2-10		1,598		(839)		759		1,598		(812)		786
Patent	7-10		1,800		(1,650)		150		1,800		(1,640)		160
Noncompetition agreements	3		848		(377)		471		848		(306)		542
Total		$	47,288	$	(26,916)	$	20,372	$	47,288	$	(26,049)	$	21,239

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

The weighted average amortization period for acquired identifiable intangible assets was 6.6 years as of March 31, 2022. The following table summarizes intangible assets amortization expense in the Condensed Consolidated Statements of Comprehensive Loss (in thousands):

	Three Months Ended March 31,
	2022		2021
Amortization of acquired technology included under Costs of Revenues	$	553	$	535
Amortization of acquired intangible assets presented separately under Costs and Expenses		314		314
Total amortization of acquired intangible assets	$	867	$	849

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

The Company expects annual amortization of acquired identifiable intangible assets to be as follows (in thousands):

Year Ending December 31,	Amount
2022 (remaining nine months)	$	2,601
2023		3,444
2024		3,046
2025		2,882
2026		2,712
2027 and thereafter		5,687
Total future amortization expense	$	20,372