Note 2 - Acquisitions (Tables) - ClariPhy Communications Inc.[Member]

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

	Preliminary Allocation			Allocation Adjustments			Final Allocation
Cash	$	7,417		$	—		$	7,417
Receivables		2,552			602			3,154
Inventories		13,774			—			13,774
Other current assets		2,739			(123	)		2,616
Property and equipment		6,163			—			6,163
Identifiable intangible assets		138,558			—			138,558
In-process research and development		97,340			—			97,340
Other noncurrent assets		753			—			753
Accounts payable, accrued expenses and other current liabilities		(13,667	)		2			(13,665	)
Deferred tax liabilities, noncurrent		(42,958	)		94			(42,864	)
Other liabilities		(5,647	)		—			(5,647	)
Total identifiable net assets		207,024			575			207,599
Goodwill		96,637			(575	)		96,062
Net assets acquired	$	303,661		$	—		$	303,661

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

	Estimated Fair Value		Estimated Useful Life (Years)
Developed technology	$	66,450		1	-	6
Customer relationships		62,370			7
Trade name		1,390			5
Software		8,348		1	-	3
In-process research and development		97,340			—
	$	235,898

Schedule of Acquired in Process Research and Development [Table Text Block]

Description	IPR&D		Percentage of Completion			Estimated Cost to Complete		Expected Release Date
M200	$	60,500		67	%	$	12,064		2018
Lightspeed III		36,840		26	%		39,176		2019

Business Acquisition, Pro Forma Information [Table Text Block]

	Pro Forma Year Ended December 31, 2016
	(unaudited)
Revenue	$	304,820
Net income	$	48,481
Earnings per share – basic	$	1.20
Earnings per share – diluted	$	1.10