Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2017

Balance Sheet Related Disclosures [Abstract]

Schedule Of Available-For-Sale Short-Term

	As of
	December 31, 2017									December 31, 2016
	Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value		Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
	(In thousands)
U.S. treasuries	$	124,816	$	—	$	(146	)	$	124,670	$	123,869	$	9	$	(40	)	$	123,838
Certificates of deposits	162		—		—			162		148		—		—			148
Total	$	124,978	$	—	$	(146	)	$	124,832	$	124,017	$	9	$	(40	)	$	123,986

Schedule Of Accounts Receivable And Related Allowances

Accounts receivable, net

	As of
	December 31, 2017			December 31, 2016
	(In thousands)
Gross accounts receivable	$	437,891		$	333,080
Allowance for doubtful accounts	(1,257		)	(1,255		)
Allowance for sales returns	(20,189		)	(13,506		)
Allowance for price protection	(3,647		)	(4,480		)
Total allowances	(25,093		)	(19,241		)
Total accounts receivable, net	$	412,798		$	313,839

Schedule Of Inventories

Inventories

	As of
	December 31, 2017		December 31, 2016
	(In thousands)
Raw materials	$	4,465	$	4,596
Finished goods	241,429		243,266
Total inventories	$	245,894	$	247,862

Schedule Of Property And Equipment, Net

Property and equipment, net

	As of
	December 31, 2017			December 31, 2016
	(In thousands)
Computer equipment	$	10,114		$	10,557
Furniture, fixtures and leasehold improvements	21,640			20,827
Software	28,997			28,663
Machinery and equipment	62,490			63,446
Total property and equipment, gross	123,241			123,493
Accumulated depreciation and amortization	(102,581		)	(104,020		)
Total property and equipment, net	$	20,660		$	19,473

Schedule Of Purchased Intangibles, Net

Intangibles, net

	As of December 31, 2017							As of December 31, 2016
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
	(In thousands)
Technology	$	66,599	$	(62,172	)	$	4,427	$	66,599	$	(57,381	)	$	9,218
Customer contracts and relationships	56,500		(37,430		)	19,070		56,500		(30,375		)	26,125
Other	11,045		(9,554		)	1,491		11,045		(8,489		)	2,556
Total intangibles, net	134,144		(109,156		)	24,988		$	134,144	$	(96,245	)	$	37,899

Schedule Of Estimated Amortization Expense Related To Intangibles

As of December 31, 2017, estimated amortization expense related to finite-lived intangibles for each of the next five years and thereafter is as follows (in thousands):

2018	$	9,396
2019	7,544
2020	6,622
2021	1,413
2022	13
Total estimated amortization expense	$	24,988

Schedule Of Goodwill

The changes in the carrying amount of goodwill during the years ended December 31, 2017 and 2016 are as follows:

	Old Segments											New Segments
	Retail			Commercial			Service Provider		Total			Arlo		Connected Home		SMB		Total
	(In thousands)
As of December 31, 2015	$	45,442		$	36,279		$	—	$	81,721		$	—	$	—	$	—	$	—
Goodwill from acquisition of Placemeter	3,742			—			—		3,742			—		—		—		—
As of December 31, 2016	49,184			36,279			—		85,463			—		—		—		—
Relative fair value approach	(49,184		)	(36,279		)	—		(85,463		)	21,149		28,035		36,279		85,463
As of January 1, 2017	—			—			—		—			21,149		28,035		36,279		85,463
As of December 31, 2017	$	—		$	—		$	—	$	—		$	21,149	$	28,035	$	36,279	$	85,463

Schedule of Other Assets, Noncurrent

Other non-current assets

	As of
	December 31, 2017		December 31, 2016
	(In thousands)
Non-current deferred income taxes	$	49,468	$	70,859
Other	12,321		7,977
Total other non-current assets	$	61,789	$	78,836

Schedule Of Other Accrued Liabilities

Other accrued liabilities

	As of
	December 31, 2017		December 31, 2016
	(In thousands)
Sales and marketing programs	$	96,153	$	74,330
Warranty obligation	75,824		58,520
Freight	10,567		8,980
Other	39,926		28,844
Total other accrued liabilities	$	222,470	$	170,674