Arlo (ARLO) 10-K 28 Feb 20 2019 FY Annual report Financial data

Cover

Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 21, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-38618
Entity Registrant Name	ARLO TECHNOLOGIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-4061754
Entity Address, Address Line One	3030 Orchard Parkway
Entity Address, City or Town	San Jose,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	408
Local Phone Number	890-3900
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	ARLO
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 209.3
Entity Common Stock, Shares Outstanding		76,687,772
Documents Incorporated by Reference	Portions of the registrant’s definitive proxy statement for its 2020 annual meeting of stockholders, which will be filed within 120 days of the registrant’s fiscal year end, are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0001736946
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 236,680	$ 151,290
Short-term investments	19,990	49,737
Accounts receivable, net	127,317	166,045
Inventories	68,624	124,791
Prepaid expenses and other current assets	16,958	23,611
Total current assets	469,569	515,474
Property and equipment, net	21,352	49,428
Operating lease right-of-use assets, net	31,300	0
Intangibles, net	1,306	2,823
Goodwill	11,038	15,638
Expected Goodwill Impairment	11,000
Restricted cash	4,139	4,134
Other non-current assets	4,008	8,449
Total assets	542,712	595,946
Current liabilities:
Accounts payable	111,650	82,542
Deferred revenue	50,362	26,678
Accrued liabilities	127,400	172,036
Income tax payable	4,489	734
Total current liabilities	293,901	281,990
Non-current deferred revenue	15,736	23,313
Non-current operating lease liabilities	29,001	0
Non-current financing lease obligation	0	19,978
Non-current income taxes payable	92	22
Other non-current liabilities	606	1,141
Total liabilities	339,336	326,444
Commitments and contingencies
Stockholders’ Equity:
Preferred Stock, Value, Issued	0	0
Common stock: $0.001 par value; 500,000,000 shares authorized; shares issued and outstanding: 75,785,952 at December 31, 2019 and 74,247,250 at December 31, 2018	76	74
Additional paid-in capital	334,821	315,277
Accumulated other comprehensive income (loss)	(2)	0
Accumulated deficit	(131,519)	(45,849)
Total stockholders’ equity	203,376	269,502
Total liabilities and stockholders’ equity	$ 542,712	$ 595,946

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	50,000,000	50,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	500,000,000	500,000,000
Common stock, issued (in shares)	75,785,952	74,247,250
Common stock, outstanding (in shares)	75,785,952	74,247,250

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total revenue	$ 370,007	$ 464,918	$ 370,658
Total cost of revenue	334,203	372,843	279,424
Gross profit	35,804	92,075	91,234
Operating expenses:
Research and development	69,384	58,794	34,683
Sales and marketing	56,985	52,593	34,340
General and administrative	47,624	28,209	15,096
Separation expense	1,913	27,252	1,384
Gain on sale of business	(54,881)	0	0
Total operating expenses	121,025	166,848	85,503
Income (loss) from operations	(85,221)	(74,773)	5,731
Interest income	2,737	1,239	0
Other income (expense), net	913	(1,177)	1,946
Income (loss) before income taxes	(81,571)	(74,711)	7,677
Provision for income taxes	4,380	772	1,128
Net income (loss)	$ (85,951)	$ (75,483)	$ 6,549
Net income (loss) per share:
Basic (in dollars per share)	$ (1.14)	$ (1.12)	$ 0.11
Diluted (in dollars per share)	$ (1.14)	$ (1.12)	$ 0.11
Weighted average shares used to compute net income (loss) per share:
Basic (in shares)	75,074	67,231	62,250
Diluted (in shares)	75,074	67,231	62,250
Products
Total revenue	$ 323,242	$ 427,113	$ 341,581
Total cost of revenue	307,348	354,023	270,382
Services
Total revenue	46,765	37,805	29,077
Total cost of revenue	$ 26,855	$ 18,820	$ 9,042

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (85,951)	$ (75,483)	$ 6,549
Other comprehensive income (loss), before and after tax:
Unrealized gain (loss) on derivative instruments	(27)	2	0
Unrealized gain (loss) on available-for-sale securities	25	(2)	0
Total other comprehensive income (loss), before tax	(2)	0	0
Tax provision related to derivative instruments	0	0	0
Tax benefit related to available-for-sale securities	0	0	0
Total other comprehensive income (loss), net of tax	(2)	0	0
Comprehensive income (loss)	$ (85,953)	$ (75,483)	$ 6,549

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Net Parent Investment	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	NETGEAR	NETGEARAdditional Paid-In Capital	NETGEARNet Parent Investment
Beginning balance at Dec. 31, 2016	$ 73,174	$ 0	$ 0	$ 73,174	$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2016		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	6,549			6,549
Net transfer from Parent	43,245			43,245
Stock-based compensation expense							$ 2,451		$ 2,451
Ending balance (in shares) at Dec. 31, 2017		0
Ending balance at Dec. 31, 2017	125,419	$ 0	0	125,419	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(75,483)
Issuance of common stock (in shares)		11,747,000
Issuance of common stock	174,737	$ 12	174,725
Initial public offering costs paid	(1,404)		(1,404)				(3,148)	$ (3,148)
Net transfer from Parent	43,549			43,549
Conversion of Net parent investment into common stock (in shares)		62,500,000
Conversion of Net parent investment into common stock	62	$ 62	139,030	(139,030)
Stock-based compensation expense	6,074		6,074				$ 2,757		$ 2,757
Change in unrealized gains and losses on available-for-sale securities, net of tax	(2)				(2)
Change in unrealized gains and losses on derivatives, net of tax	$ 2				2
Ending balance (in shares) at Dec. 31, 2018	74,247,250	74,247,000
Ending balance at Dec. 31, 2018	$ 269,502	$ 74	315,277	0	0	(45,849)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(85,951)					(85,951)
Issuance of common stock (in shares)		1,152,000
Issuance of common stock	13	$ 1	12
Stock-based compensation expense	19,582		19,582
Issuance of common stock under Employee Stock Purchase Plan (in shares)		767,000
Issuance of common stock under Employee Stock Purchase Plan	1,826	$ 1	1,825
Restricted stock unit withholdings (in shares)		(380,000)
Restricted stock unit withholdings	(1,875)		(1,875)
Change in unrealized gains and losses on available-for-sale securities, net of tax	25				25
Change in unrealized gains and losses on derivatives, net of tax	$ (27)				(27)
Ending balance (in shares) at Dec. 31, 2019	75,785,952	75,786,000
Ending balance at Dec. 31, 2019	$ 203,376	$ 76	$ 334,821	$ 0	$ (2)	$ (131,519)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ (85,951)	$ (75,483)	$ 6,549
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	10,681	5,307	3,740
Stock-based compensation expense	22,894	8,831	2,451
Provision for (release of) bad debts and inventory	(2,921)	6,739	404
Gain on sale of business	(54,881)	0	0
Deferred income taxes	(210)	(1,108)	(388)
Premium amortization/discount accretion on investments, net	(461)	(120)	0
Changes in assets and liabilities:
Accounts receivable, net	38,247	(118,778)	(75,838)
Inventories	53,604	(48,934)	(35,639)
Prepaid expenses and other assets	11,525	(16,592)	62
Accounts payable	28,791	87,307	(350)
Deferred revenue	22,567	11,253	24,011
Accrued liabilities	(34,714)	123,892	36,013
Net cash provided by (used in) operating activities	9,171	(17,686)	(38,985)
Cash flows from investing activities:
Purchases of property and equipment	(6,664)	(21,666)	(3,578)
Proceeds from sale of business	52,694	0	0
Purchases of short-term investments	(29,768)	(54,619)	0
Proceeds from maturities of short-term investments	60,000	5,000	0
Payments made in connection with business acquisition, net of cash acquired	0	0	(737)
Net cash provided by (used in) investing activities	76,262	(71,285)	(4,315)
Cash flows from financing activities:
Proceeds from initial public offering, net of offering costs	0	173,395	0
Restricted stock unit withholdings	(1,875)	0
Proceeds related to employee benefit plans	1,837	0	0
Net investment from NETGEAR	0	70,892	43,188
Net cash provided by (used in) financing activities	(38)	244,287	43,188
Net increase (decrease) in cash and cash equivalents and restricted cash	85,395	155,316	(112)
Cash and cash equivalents and restricted cash, at beginning of period	155,424	108	220
Cash and cash equivalents and restricted cash, at end of period	240,819	155,424	108
Non-cash investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued liabilities	1,086	16,003	81
De-recognized fair value of build-to-suit lease	(21,610)	0	0
Estimated fair value of a facility under build-to-suit lease including tenant improvements	0	28,357	0
Supplemental cash flow information:
Cash paid for income taxes, net	$ 960	$ 89	$ 0

The Company and Basis of Presen

The Company and Basis of Presentation	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company and Basis of Presentation	The Company and Basis of Presentation The Company Arlo Technologies, Inc. (“Arlo” or the “Company”) combines an intelligent cloud infrastructure and mobile app with a variety of smart connected devices that transform the way people experience the connected lifestyle. The Company's cloud-based platform provides users with visibility, insight and a powerful means to help protect and connect in real-time with the people and things that matter most, from any location with a Wi-Fi or a cellular connection. The Company primarily generates revenue by selling devices through retail channels, wholesale distribution and wireless carrier channels and paid subscription services through in-app purchases. The Company has dual corporate headquarters located in San Jose, California and Carlsbad, California and also maintains offices to provide sales and customer support at various global locations. On February 6, 2018, NETGEAR Inc. (“NETGEAR”) announced that its board of directors had unanimously approved the pursuit of a separation of its Arlo business from NETGEAR (the “Separation”) to be effected through an initial public offering (the “IPO”) of newly issued shares of the common stock of Arlo, then a wholly owned subsidiary of NETGEAR. On July 6, 2018, the Company filed a registration statement (as amended, the "IPO Registration Statement") relating to the IPO of common stock of Arlo with the U.S. Securities and Exchange Commission (the "SEC"). Following a series of restructuring steps prior to the completion of the IPO of Arlo common stock, the Arlo business was transferred from NETGEAR to Arlo (collectively, the “Contribution”). On August 2, 2018, NETGEAR and Arlo announced the pricing of the IPO of 10,215,000 shares of Arlo’s common stock at a price to the public of $16.00 per share. On August 3, 2018, Arlo’s shares began trading on the New York Stock Exchange under the ticker symbol “ARLO.” On August 7, 2018, the Company completed its IPO of 11,747,250 shares of common stock (including 1,532,250 shares of common stock pursuant to the underwriters’ option to purchase additional shares, which was exercised in full on August 3, 2018), at $16.00 per share, before underwriting discounts and commissions and estimated offering costs. Cash proceeds from the IPO were $173.4 million , net of the portion of the offering cost paid by Arlo, which portion was $1.4 million . The total offering cost was $4.6 million , of which $3.2 million was paid by NETGEAR. Prior to the completion of the IPO, the Company was a wholly owned subsidiary of NETGEAR and upon the closing of the IPO (including the issuance of additional shares of common stock pursuant to the underwriters’ option to purchase additional shares, which was exercised in full) on August 7, 2018, NETGEAR owned approximately 84.2% of the shares of Arlo’s outstanding common stock. On November 29, 2018, NETGEAR announced that its board of directors had approved a special stock dividend (the “Distribution”) to NETGEAR stockholders of the 62,500,000 shares of Arlo common stock owned by NETGEAR. The Distribution was made on December 31, 2018 (the “Distribution Date”) to all NETGEAR stockholders of record as of the close of business on December 17, 2018 (the “Record Date”). In the Distribution, each NETGEAR stockholder of record on the Record Date received 1.980295 shares of Arlo common stock for every share of NETGEAR common stock held on the Record Date, subject to cash in lieu of fractional shares. The Distribution was intended to qualify as generally tax free to NETGEAR stockholders for U.S. federal income tax purposes. In connection with the Distribution, 62,500,000 shares of Arlo common stock held by NETGEAR were distributed to its stockholders and NETGEAR is no longer considered a related party to the Company. Basis of Presentation The combined financial statements of Arlo that cover dates prior to the completion of the IPO have been derived and carved out from the consolidated financial statements and accounting records of NETGEAR as if Arlo had operated on a stand-alone basis within the periods presented. In connection with the Separation and IPO, certain assets and liabilities presented have been transferred to Arlo at carry-over (historical cost) basis. Balances contributed by NETGEAR on or before the completion of the IPO were based on the master separation agreement between the Company and NETGEAR and related documents governing the Contribution. Following the completion of the IPO, the consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All periods presented have been accounted for in conformity with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) and pursuant to the regulations of the U.S. Securities and Exchange Commission (“SEC”). Reclassification Certain reclassifications have been made to the prior year's consolidated balance sheets, statement of operations and statements of cash flows to conform to the current year's presentation. The reclassifications has had no effect on prior years' net income (loss), total assets, total liabilities, total stockholders' equity or cash flows. Allocated Expenses from NETGEAR Prior to the completion of the IPO, NETGEAR provided certain corporate services to the Company, which were allocated based on revenue, headcount, or other measures the Company has determined as reasonable through July 1, 2018. The amount of these allocations from NETGEAR reflected within operating expenses in the consolidated statements of operations was $30.6 million for the six months ended July 1, 2018, which included $9.4 million for research and development, $10.0 million for sales and marketing, and $11.2 million for general and administrative expense. For the year ended December 31, 2017, allocations amounted to $40.0 million , which included $11.8 million for research and development, $13.1 million for sales and marketing, and $15.1 million for general and administrative expense. Following July 1, 2018, the Company assumed responsibility for the costs of these functions. Fiscal periods The Company’s fiscal year begins on January 1 of the year stated and ends on December 31 of the same year. The Company reports its results on a fiscal quarter basis rather than on a calendar quarter basis. Under the fiscal quarter basis, each of the first three fiscal quarters ends on the Sunday closest to the calendar quarter end, with the fourth quarter ending on December 31. Use of estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported periods. Management bases its estimates on various assumptions believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ materially from those estimates and operating results for the year ended December 31, 2019 are not necessarily indicative of the results that may be expected for any future period.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Cash and cash equivalents The Company considers all highly liquid investments with an original maturity or a remaining maturity at the time of purchase of three months or less to be cash equivalents. The Company deposits cash and cash equivalents with high credit quality financial institutions. Restricted cash The Company maintains certain cash balances restricted as to withdrawal or use. Restricted cash is comprised primarily of cash used as a collateral for a letter of credit associated with the Company’s lease agreement for its headquarters in San Jose, California. The Company deposits restricted cash with high credit quality financial institutions. The following table shows reconciliation of cash and cash equivalents and restricted cash within the consolidated balance sheets to the amounts shown in the statements of cash flows: As of December 31, 2019 2018 2017 (In thousands) Cash and cash equivalents $ 236,680 $ 151,290 $ 108 Restricted cash 4,139 4,134 — Total as presented on the consolidated statements of cash flows $ 240,819 $ 155,424 $ 108 Short-term investments Short-term investments are comprised of marketable securities that consist of government securities with an original maturity or a remaining maturity at the time of purchase of greater than three months and no more than 12 months. The marketable securities are held in the Company’s name with a high quality financial institution, which acts as the Company’s custodian and investment manager. These marketable securities are classified as available-for-sale securities in accordance with the provisions of the authoritative guidance for investments and are carried at fair value with unrealized gains and losses reported as a separate component of stockholders’ equity. Fair value measurements The carrying amounts of the Company’s financial instruments, including cash equivalents, restricted cash, short-term investments, accounts receivable, and accounts payable approximate their fair values due to their short maturities. Foreign currency forward contracts are recorded at fair value based on observable market data. The Company determines the fair values of its financial instruments based on a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The classification of a financial asset or liability within the hierarchy is based upon the lowest level input that is significant to the fair value measurement. The fair value hierarchy prioritizes the inputs into three levels that may be used to measure fair value: Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; and Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Derivative financial instruments The Company’s subsidiaries have had, and will continue to have material future cash flows, including revenue and expenses, which are denominated in currencies other than the Company’s functional currency. The Company and all its subsidiaries designate the U.S. dollar as the functional currency. Changes in exchange rates between the Company’s functional currency and other currencies in which the Company transacts business will cause fluctuations in cash flow expectations and cash flow realized or settled. Accordingly, the Company uses derivatives to mitigate its business exposure to foreign exchange risk. The Company enters into foreign currency forward contracts in Australian dollars, British pounds, euros, and Canadian dollars to manage its exposure to foreign exchange risk related to expected future cash flows on certain forecasted revenue, costs of revenue, operating expenses and existing assets and liabilities. The Company’s foreign currency forward contracts do not contain any credit risk-related contingent features. The Company is exposed to credit losses in the event of nonperformance by the counter-parties of its forward contracts. The Company enters into derivative contracts with high-quality financial institutions and limits the amount of credit exposure to any one counter-party. In addition, the derivative contracts typically mature in less than six months and the Company continuously evaluates the credit standing of its counter-party financial institutions. The counter-parties to these arrangements are large highly rated financial institutions and the Company does not consider non-performance a material risk. The Company may choose not to hedge certain foreign exchange exposures for a variety of reasons, including, but not limited to, materiality, accounting considerations or the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will offset more than a portion of the financial impact resulting from movements in foreign exchange rates. The Company’s accounting policies for these instruments are based on whether the instruments are designated as hedge or non-hedge instruments in accordance with the authoritative guidance for derivatives and hedging. The Company records all derivatives on the balance sheets at fair value. Cash flow hedge gains and losses are recorded in other comprehensive income (“OCI”) until the hedged item is recognized in earnings. Derivatives that are not designated as hedging instruments are adjusted to fair value through earnings in Other income (expense), net in the consolidated statements of operations . Cash flow hedges To help manage the exposure of operating margins to fluctuations in foreign currency exchange rates, the Company hedges a portion of its anticipated foreign currency revenue, costs of revenue and certain operating expenses. These hedges are designated at the inception of the hedge relationship as cash flow hedges. The effective portion of the gain or loss on the derivative instrument is reported as a component of accumulated other comprehensive income (loss) (“AOCI”) in stockholders’ equity and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The ineffective portion of the gain or loss on the derivative instrument is recognized in current earnings. Derivative instruments designated as cash flow hedges must be de-designated as hedges when it is probable the forecasted hedged transaction will not occur within the designated hedge period or if not recognized within 60 days following the end of the hedge period. Deferred gains and losses in AOCI with such derivative instruments are reclassified immediately into earnings through Other income (expense), net. Any subsequent changes in fair value of such derivative instruments also are reflected in current earnings unless they are re-designated as hedges of other transactions. Non-designated hedges The Company enters into non-designated hedges under the authoritative guidance for derivatives and hedging to manage the exposure of non-functional currency monetary assets and liabilities held on its financial statements to fluctuations in foreign currency exchange rates, as well as to reduce volatility in other income and expense. The non-designated hedges are generally expected to offset the changes in value of its net non-functional currency asset and liability position resulting from foreign exchange rate fluctuations. Foreign currency denominated accounts receivable and payable are hedged with non-designated hedges when the related anticipated foreign revenue and expenses are recognized in the Company’s financial statements. Concentration of credit risk Financial instruments that potentially subject the Company to a concentration of credit risk consist of principally investments, derivative financial instruments, and accounts receivable. The Company believes that there is minimal credit risk associated with the investment of its cash and cash equivalents, restricted cash, and short-term investments, due to the restrictions placed on the type of investment that can be entered into under the Company’s investment policy. The Company’s short-term investments consist of investment-grade securities, and the Company’s cash and investments are held and managed by high credit quality financial institutions. The Company is exposed to credit loss in the event of nonperformance by counterparties to the foreign currency forward contracts used to mitigate the effect of foreign currency exchange rate changes. The Company enters into derivative contracts with high-quality financial institutions and limits the amount of credit exposure to any counterparty. The Company’s foreign currency forward contracts do not contain any credit-risk-related contingent features. In addition, the derivative contracts typically mature in less than six months and the Company continuously evaluates the credit standing of its counterparty financial institutions. The counterparties to these arrangements are large highly rated financial institutions and the Company does not consider non-performance a material risk. The Company believes the counterparties for its outstanding contracts are large, financially sound institutions and thus, the Company does not anticipate nonperformance by these counterparties. The Company’s customers are primarily retailers and wholesale distributors who sell or distribute the products to a large group of end-users. The Company regularly performs credit evaluations of the Company’s customers’ financial condition and considers factors such as historical experience, credit quality, age of the accounts receivable balances, geographic or country-specific risks and current economic conditions that may affect customers’ ability to pay. The Company does not require collateral from its customers. Historically, a substantial portion of the Company’s revenue has been derived from a limited number of retailers and wholesale distribution partners. As of December 31, 2019 , one customer accounted for 51.3% of the Company’s total accounts receivable, net. As of December 31, 2018 , two customers accounted for 36.4% and 18.0% of the Company’s total accounts receivable, net, respectively. No other customer accounted for 10% or greater of the Company’s total accounts receivable, net. Allowance for doubtful accounts The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The allowance for doubtful accounts is reviewed periodically and adjusted if necessary based on the Company’s assessments of its customers’ ability to pay. If the financial condition of the Company’s customers should deteriorate or if actual defaults are higher than the Company’s historical experience, additional allowances may be required, which could have an adverse impact on operating expenses. Inventories Inventories consist of finished goods which are valued at the lower of cost or net realizable value, with cost being determined using the first-in, first-out method. The Company writes down its inventories based on estimated excess and obsolete amounts, determined primarily based on demand forecasts, but takes into account market conditions, product development plans, product life expectancy and other factors. At the point of loss recognition, a new, lower cost basis for that inventory is established, and subsequent changes in facts and circumstances do not result in the restoration or increase of the newly established cost basis. While management believes the estimates and assumptions underlying its current forecasts are reasonable, there is risk that additional charges may be necessary if current forecasts are greater than actual demand. Property and equipment, net Property and equipment are stated at historical cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows: Asset Category: Range of Useful Lives Computer equipment 2 years Furniture and fixtures 5 years Software 2-5 years Machinery and equipment 2-3 years Leasehold improvements Shorter of remaining lease term or 7 years Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated undiscounted future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. The carrying value of the asset is reviewed on a regular basis for the existence of facts, both internal and external, that may suggest impairment. There was no impairment loss of property and equipment for the years ended December 31, 2019 and 2018 , and charges related to the impairment of property and equipment were insignificant in 2017 . Goodwill Goodwill pertained to the acquisitions of Avaak, Inc. (“Avaak”) and Placemeter, Inc. (“Placemeter”). Goodwill represents the amount by which the purchase price exceeds estimated fair value of net assets of businesses acquired in a business combination. The Company performs an annual impairment assessment of goodwill at the reporting unit level on the first day of the fourth fiscal quarter. The analysis may include both qualitative and quantitative factors to assess the likelihood of an impairment. Should certain events or indicators of impairment occur between annual impairment tests, the Company will perform the impairment test as those events or indicators occur. Examples of such events or circumstances include a significant decline in the Company’s expected future cash flows, a sustained, significant decline in the Company’s stock price and market capitalization, a significant adverse change in the business climate and slower growth rates. Goodwill is tested for impairment at the reporting unit level by first performing a qualitative assessment to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of the reporting unit is less than its carrying amount. The qualitative assessment considers macroeconomic conditions, industry and market considerations, cost factors, overall company financial performance, events affecting the reporting units, and changes in the Company’s stock price. If the reporting unit does not pass the qualitative assessment, the Company estimates its fair value and compares the fair value with the carrying amount of its reporting unit, including goodwill. If the fair value is greater than the carrying amount of its reporting unit, no impairment is recorded. Goodwill is also tested for impairment by performing a quantitative assessment, which is used to identify both the existence of impairment and the amount of impairment loss. The quantitative assessment compares the fair value of a reporting unit with its carrying amount, including goodwill. If the fair value is less than the carrying amount, an impairment loss shall be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. The impairment charge, if any would be recorded to earnings in the consolidated statements of operations. A quantitative assessment of goodwill was performed on the first day of the fourth quarter of fiscal 2019 . The Company identified that it has one reporting unit for the purpose of goodwill impairment testing and the reporting unit is at the same level as its operating segment and reportable segment. The Company utilized its market capitalization as a proxy for fair value of the business and compared it to the carrying amount as of October 1, 2019 . Based on the results of the quantitative assessment, the respective fair value was substantially in excess of the carrying amount by $68.0 million , or 38% . The Company updated its quantitative test as of December 31, 2019 at which time the fair value of the business was substantially in excess of the carrying amount by $115.7 million , or 57% . No goodwill impairment was recognized for the years ended December 31, 2019 , 2018 and 2017 . The Company does not believe it is likely that there will be a material change in the estimates or assumptions the Company uses to test for impairment loss on goodwill. However, if the actual result is not consistent with the Company’s estimates or assumptions, the Company may be exposed to an impairment charge that could be material. Refer to Note 4 Disposal of business , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for goodwill derecognized in the Verisure transaction. Intangibles, net Intangibles, net pertained to the acquisitions of Avaak and Placemeter. Purchased intangibles with finite lives are amortized using the straight-line method over the estimated economic useful life, which range from three to five years . Finite-lived intangibles are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Examples of such events or circumstances include: a significant decrease in the market price of the asset, a significant decline in the Company’s expected future cash flows, significant changes or planned changes in its use of the assets, and a significant adverse change in the business climate. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. If the carrying amount of the asset exceeds its estimated undiscounted future net cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. The carrying amount of the asset is reviewed on a regular basis for the existence of facts, both internal and external, that may suggest impairment. During the years ended December 31, 2019 and 2018 , there were no events or changes in circumstances that indicated the carrying amount of the Company’s finite-lived assets may not be recoverable from their undiscounted cash flows. Consequently, the Company did not perform an impairment test and did not record any impairments to intangibles for the years ended December 31, 2019 , 2018 and 2017. Revenue recognition On January 1, 2018, the Company adopted ASU 2014-09, “Revenue from Contracts with Customers” (Topic 606) (“ASC 606”) and applied this guidance to those contracts which were not completed at the date of adoption using the modified retrospective method. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods (“ASC 605”). The Company recognized the cumulative effect of initially applying ASC 606 as an adjustment to Net parent investment effective January 1, 2018. Revenue from contracts with customers is recognized when control of the promised goods or services is transferred to the customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The majority of revenue comes from sales of hardware products to customers (retailers, distributors, and service providers). Revenue is recognized at a point in time when control of the goods is transferred to the customer, generally occurring upon shipment or delivery, dependent upon the terms of the underlying contract. The amount recognized reflects the consideration the Company expects to be entitled to in exchange for the transferred goods. The Company sells paid subscription services to its end user customers where it provides customers access to its cloud services. Revenue for subscription sales is generally recognized on a ratable basis over the contract term, beginning on the date that the service is made available to the customers at the time of registration. The subscription contracts are generally 30 days or 12 months in length, billed in advance. All such service or support sales are typically recognized using an output measure of progress by looking at the time elapsed, as the contracts generally provide the customer equal benefit throughout the contract period. In addition to selling paid subscriptions, the Company also sells services bundled with hardware products and accounts for these sales in line with the multiple performance obligations guidance. Revenue from all sales types is recognized at transaction price, which is the amount the Company expects to be entitled to in exchange for transferring goods or providing services. Transaction price is calculated as selling price net of variable consideration which may include estimates for future returns, sales incentives, and price protection related to current period product revenue. The Company’s standard obligation to its direct customers generally provides for a full refund in the event that such product is not merchantable or is found to be damaged or defective. In determining estimates for future returns, management analyzes historical sales and returns data, channel inventory levels, current economic trends, and changes in customer demand for the Company’s products. Sales incentives and price protection are determined based on a combination of the actual amounts committed and estimated future expenditure based upon historical customary business practice. Typically variable consideration does not need to be constrained as estimates are based on predictive historical data or future commitments that are planned and controlled by the Company. However, the Company continues to assess variable consideration estimates such that it is probable that a significant reversal of revenue will not occur. Contracts with multiple performance obligations Some of the Company’s contracts with customers contain multiple promised goods or services. Such contracts include hardware products with bundled services, various subscription services, and support. For these contracts, the Company accounts for the promises separately as individual performance obligations if they are distinct. Performance obligations are determined to be considered distinct if they are both capable of being distinct and distinct within the context of the contract. In determining whether performance obligations meet the criteria for being distinct, the Company considers a number of factors, such as the degree of interrelation and interdependence between obligations, and whether or not the good or service significantly modifies or transforms another good or service in the contract. The embedded software in most of the hardware products is not considered distinct and therefore the combined hardware and incidental software are treated as one performance obligation and recognized at the point in time when control of product transfers to the customer. Services that are included with certain hardware products are considered distinct and therefore the hardware and service are treated as separate performance obligations. After identifying the separate performance obligations, the transaction price is allocated to the separate performance obligations on a relative stand-alone selling price basis. Stand-alone selling prices are generally determined based on the prices charged to customers or using an adjusted market assessment. Stand-alone selling price of the hardware is directly observable from add-on camera and base station sales. Stand-alone selling price of the premium services are directly observable from direct sales to end users while the service is estimated using an adjusted market approach. Revenue is then recognized for each distinct performance obligation as control is transferred to the customer. Revenue attributable to hardware is recognized at the time control of the product transfers to the customer. The transaction price allocated to the service is recognized over the specified service period or over the estimated useful life of the hardware, beginning when the customer is expected to activate their account. Useful life of the hardware is determined by industry norms, technical and financial relevance, frequency of new model releases, and user history. Long-term Supply Arrangement - Verisure The Company has entered into a Supply Agreement as part of the disposal of the Company's commercial operations in Europe as discussed in Note 4 , where Verisure prepays future product purchases with a minimum product purchase commitment also required. The Supply Agreement includes product purchases, paid subscription services, basic services, and an option for Verisure to acquire development services by submitting a statement of work (“SOW”). Products sold come with a standard twelve month warranty. Verisure assumes responsibilities for all warranty claims, returns on products and certain technical support to the end users. The Company provides technical support for paid subscription services where Verisure can not resolve the issue. Verisure is responsible for any marketing and promotion of the Company's products and services sold in Europe. Products are priced at a cost plus markup based on markups specified in the Supply Agreement and that price varies based on the cost of the product. The paid subscription services and basic services pricing is based on the number of users monthly and is priced at a cost plus markup specified in the Supply Agreement that varies based on the user and service type. T he transaction price for products and paid subscription services is entirely variable because the consideration is dependent on the actual costs. The Company allocates variable consideration specified for products entirely to products, and variable consideration specified for the paid subscription services entirely to the paid subscription services. For development services, no contract exists until an SOW is submitted and approved by both parties. For products, since quantity and product types are not specified in the agreement, contracts are not deemed to exist until the Company receives and accepts the customer purchase order (PO). Each product with a valid PO is considered a single performance obligation. The Company recognizes variable consideration for products upon delivery and for services when the monthly service is rendered for paid subscription services and basic services. The non-refundable prepayment does not relate to future goods or services, as such no further assessment of material rights is required. Further, as the transfer of products is at the discretion of the customer (i.e. when Verisure issues a PO), a significant financing component does not exist as it relates to the prepayment. The Company also expects that prepayments will be fully utilized by Verisure with one year, hence, no additional accounting consideration is necessary for breakage. The Company also concluded that it is acting as the principal in the Supply Agreement and determined that revenue should be presented gross. Non-recurring Engineering ("NRE") Arrangement - Verisure The Supply Agreement also provides for certain development services under an SOW to Verisure ("NRE arrangement") as part of the disposal of the Company's commercial operations in Europe as discussed in Note 4 . In the NRE arrangement, Verisure pays non-refundable installments upon the commencement of agreed-upon milestones. There is a single performance obligation as the distinct goods and services promised under the SOW are highly interdependent or interrelated inputs that produce a single combined output given the nature of such arrangements. The output (or work-in-progress of such output) typically has no alternative use to the Company given the customized nature of the arrangement and the Company has enforceable rights given that the non-refundable milestone payments are prepayments in nature; control for NRE development services therefore transfers over time. The Company determined that the most appropriate measure of progress for revenue recognition is the input method based on cost because the Company can reasonably estimate the total costs for the NRE, and the costs incurred reasonably reflects the Company’s efforts to satisfy the performance obligation. The NRE costs include labor, material, overhead as well as the use of outside services. The total estimated NRE costs are based on a combination of historical costs together with quotes from vendors for supplying parts or services towards the completion. Adjustments to cost and profit estimates are made periodically due to changes in scope of work, hours to complete and estimated profitability, including those arising from final contract settlements. These changes may result in revisions to costs and income and are recognized in the period in which the revisions are determined. Any losses expected to be incurred on contracts in progress are charged to operations in the period such losses are determined. If total NRE costs calculated upon completion in the current period are more than the estimated total costs at completion used to calculate revenue in a prior period, then the profits in the current period will be lower than if the estimated costs used in the prior period calculation were equal to the actual total costs upon completion. Warranties Sales of hardware products regularly include warranties to end customers that cover bug fixes, minor updates such that the product continues to function according to published specifications in a dynamic environment, and phone support. These standard warranties are assurance type warranties and do not offer any services in addition to the assurance that the product will continue working as specified for one or more years. Therefore, warranties are not considered separate performance obligations in the arrangement. Instead, the expected cost of warranties is accrued as an expense in accordance with authoritative guidance. Sales incentives The Company accrues for sales incentives as a marketing expense if it receives an identifiable benefit in exchange and can reasonably estimate the fair value of the identifiable benefit received; otherwise, it is recorded as a reduction to revenues. As a consequence, the Company records a substantial portion of its channel marketing costs as a reduction of revenue. The Company records estimated reductions to revenue for sales incentives when the related revenue is recognized or ahead of customer or end customer commitment if customary business practice creates an implied expectation that such activities will occur in the future. Shipping and handling costs The Company includes shipping and handling fees billed to customers in Revenue. Shipping and handling costs associated with inbound freight are included in Cost of revenue. In cases where the Company gives a freight allowance to the customer for their own inbound freight costs, such costs are appropriately recorded as a reduction in Revenue. Shipping and handling costs associated with outbound freight are included in Sales and marketing expenses. The Company has elected to account for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Shipping and handling costs associated with outbound freight totaled $2.3 million , $3.7 million and $2.8 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Contract costs The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that otherwise would have been recognized is one year or less. These costs are included in sales and marketing and general and administrative expenses. If the incremental costs of obtaining a contract, which consist of sales commissions, relate to a service recognized over a period longer than one year, costs are deferred and amortized in line with the related services over the period of benefit. Deferred commissions are classified as non-current based on the original amortization period of over one year. There were no deferred commissions as of December 31, 2019 and 2018 . Contract balances The Company records accounts receivable when it has an unconditional right to consideration. Contract liabilities are recorded when cash payments are received or due in advance of performance. Contract liabilities co

Deferred Revenue

Deferred Revenue	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Deferred Revenue	Deferred Revenue Deferred revenue consists of advance payments and deferred revenue, where the Company has unsatisfied performance obligations. Deferred revenue primarily consists of prepaid services and customer billings in advance of revenues being recognized from the Company's subscription contracts. Transaction Price Allocated to the Remaining Performance Obligations Remaining performance obligations represent the transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied as of the end of the reporting period. Unsatisfied and partially unsatisfied performance obligations consist of contract liabilities, in-transit orders with destination terms, and non-cancellable backlog. Non-cancellable backlog includes goods and services for which customer purchase orders have been accepted and that are scheduled or in the process of being scheduled for shipment. The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of December 31, 2019 : 1 year 2 years Greater than 2 years Total (In thousands) Performance obligations $ 58,441 $ 12,108 $ 3,915 $ 74,464 The majority of the performance obligation over one year pertains to revenue deferral from prepaid services. Contract Balances The following table reflects the changes in contract balances for the year ended December 31, 2019 and 2018 : 2019 2019 Balance Sheet Location December 31, 2019 December 31, 2018 January 1, 2018 $ change % change (In thousands) Accounts receivable, net Accounts receivable, net $ 127,317 $ 166,045 $ 158,507 $ (38,728 ) (23.3 )% Contract liabilities - current Deferred revenue $ 50,362 $ 26,678 $ 24,746 $ 23,684 88.8 % Contract liabilities - non-current Non-current deferred revenue $ 15,736 $ 23,313 $ 13,091 $ (7,577 ) (32.5 )% For the year ended December 31, 2019 , deferred revenue increased primarily as a result of the $20.0 million prepayment for product purchases for fiscal 2020 and $2.5 million installment payments, less $279 thousand service revenue recognized under the NRE arrangement with Verisure. The non-current deferred revenue decreased is substantially due to the derecognition of the deferred revenue associated with disposal of the Company's commercial operations in Europe. For the years ended December 31, 2019 and 2018 , $71.6 million and $50.9 million of revenue was deferred due to unsatisfied performance obligations, primarily relating to over time service revenue, and $47.4 million and $38.8 million of revenue was recognized for the satisfaction of performance obligations over time, respectively. $26.4 million and $24.7 million of this recognized revenue was included in the contract liability balance at the beginning of the period. There were no significant changes in estimates during the period that would affect the contract balances. Disaggregation of Revenue The Company conducts business across three geographic regions: Americas, EMEA, and APAC. Sales and usage-based taxes are excluded from revenue. Refer to Note 15 , Segment and Geographic Information , in Notes to Consolidated Financial Statements

Disposal of Business

Disposal of Business	12 Months Ended
	Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Disposal of Business	Disposal of Business On November 4, 2019, the Company and Verisure concurrently entered into an Asset Purchase Agreement (the “Purchase Agreement”) and Supply Agreement (the “Supply Agreement” and together with the Purchase Agreement, the “Verisure Agreements”). The Verisure Agreements created a strategic partnership that leverages both the Company and Verisure’s capabilities to create incremental scale to address the ever-growing demand for residential and commercial security. The strategic partnership will combine the Company’s innovative connected cameras and cloud services platform with Verisure’s professionally monitored security solutions to provide a new level of smart security for European customers. The Purchase Agreement contains customary representations and warranties regarding Verisure, the Business and the Assets, indemnification provisions, termination rights and other customary provisions. The Company has agreed not to engage in any business that competes with the Business for a period of three years . Under the Purchase Agreement, the Company sold and transferred certain assets and liabilities related to the Company's commercial operations in Europe. The transaction closed on December 30, 2019 for $52.7 million following working capital adjustments, which was reported as Investing Activities on the statement of cash flows. The transaction resulted in a pretax gain of $54.9 million that was recorded in Gain on sale of business in the Company's consolidated statements of operations. As part of the transaction, certain employees were transferred to Verisure. These employees hold Company RSU awards, the terms of the RSU awards were modified such that the RSU awards will continue to vest and settle after closing of the transaction in accordance with the original terms and conditions of RSU awards. Refer to Note. 13 Employee Benefit Plans , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for further detail relating to this modification. The assets and liabilities sold and assigned to Verisure were determined to have met the criteria to be classified as held for sale as of November 4, 2019, the execution date of the Purchase Agreement. The transaction contemplated by the Purchase Agreement did not meet the criteria for discontinued operations as the Company is expected to have continued involvement in Europe through manufacturing and shipping of products to the region through sales to Verisure as part of the Supply Agreement and therefore no significant change in revenue from the region is expected; it was determined the transaction did not represent a strategic shift. The Company also assessed whether a loss is needed to be recorded upon initial classification of the assets and liabilities as held for sale to adjust its carrying amount to the fair value less cost to sell. As the carrying amount of the assets and liabilities was lower than fair value less cost to sell, no adjustment was necessary. As of the closing date of December 30, 2019, the Company concluded that no impairment exists for the assets and no adjustment was necessary for the liabilities. Further, the Company reassessed the fair value and cost to sell, and noted that they did not change since the initial classification of the assets and liabilities as held for sale. Given such, no loss adjustment was necessary. The Supply Agreement provides that Verisure will become the exclusive distributor of Company products in Europe for all channels, and will non-exclusively distribute the Company's products through its direct channels globally for an initial terms of five years. During the five-year period commencing January 1, 2020, Verisure has an aggregate minimum purchase commitment of $500.0 million , which includes annual minimum commitments. On December 30, 2019, Verisure prepaid the Company $20.0 million for product purchases in fiscal 2020 and will prepay $40.0 million on the first anniversary of the closing of the Purchase Agreement for product purchases in fiscal 2021. The Supply Agreement also provides certain NRE service to Verisure, including developing certain custom products specified by Verisure in exchange for an aggregate of $10.0 million , payable in installments upon meeting certain development milestones. As of December 31, 2019, Versure has paid $2.5 million for this NRE service. For the year ended December 31, 2019, the Company has recognized service revenue of $279 thousand for this NRE service. As part of the Purchase Agreement, the Company also entered into a Transition Services Agreement with Verisure (“Verisure TSA”) to assist Verisure with the transition of the Company’s European commercial operations. These transition services primarily include IT support for 12 months , and other services for 3 to 6 months , including sales and marketing, operations and supply chain, finance, legal, and human resources. As compensation for these transition services, the Company will be reimbursed by Verisure based on actual direct costs plus allocation of overhead. For the year ended December 31, 2019, the Company charged Verisure $798 thousand for Verisure TSA services which was recorded as Other income, given such services are not related to the primary business in which the Company operates. The related Verisure TSA expenses in the same amount were recognized as incurred and reported under their natural expense classification. As of December 31, 2019, the Company received a prepayment of $22.5 million

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Balance Sheet Components Available-for-sale short-term investments As of December 31, 2019 As of December 31, 2018 Cost Unrealized Gains Unrealized Losses Estimated Fair Value Cost Unrealized Gains Unrealized Losses Estimated Fair Value (In thousands) U.S. treasuries $ 19,967 $ 23 $ — $ 19,990 $ 49,739 $ 2 $ (4 ) $ 49,737 The Company’s short-term investments are classified as available-for-sale and consist of government securities with an original maturity or remaining maturity at the time of purchase of greater than three months and no more than twelve months. Accordingly, none of the available-for-sale securities have unrealized losses greater than twelve months. Accounts receivable, net As of December 31, 2019 2018 (In thousands) Gross accounts receivable $ 127,926 $ 166,172 Allowance for doubtful accounts (609 ) (127 ) Total accounts receivable, net $ 127,317 $ 166,045 Allowance for doubtful accounts Year Ended December 31, 2019 2018 2017 (In thousands) Balance at the beginning of the period $ 127 $ 207 $ 206 Additions 482 — 1 Deductions — (80 ) — Balance at the end of the period $ 609 $ 127 $ 207 Property and equipment, net As of December 31, 2019 2018 (In thousands) Machinery and equipment $ 13,402 $ 11,415 Software 11,945 10,624 Computer equipment 4,047 4,342 Leasehold improvements 8,087 3,007 Furniture and fixtures 4,075 2,698 Construction in progress (1) — 28,357 Total property and equipment, gross 41,556 60,443 Accumulated depreciation (20,204 ) (11,015 ) Total property and equipment, net $ 21,352 $ 49,428 _________________________ (1) The Company had a build-to-suit lease arrangement under its corporate headquarters lease in San Jose, California. Upon the adoption of ASU 2016-02, the Company concluded that it did not have control over the underlying leased asset and de-recognized $21.6 million of construction in progress. Refer to Note 11 , Commitments and Contingencies , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for further details. Depreciation expense pertaining to property and equipment was $9.2 million , $3.8 million and $1.8 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Allocated depreciation expense from NETGEAR was $1.2 million and $2.0 million for the years ended December 31, 2018 and 2017 , respectively. For the periods prior to the completion of the IPO, the consolidated statements of operations include both the depreciation expense directly identifiable as Arlo’s and allocated depreciation expense from NETGEAR. Refer to Allocated Expenses from NETGEAR as discussed in Note 1 , The Company and Basis of Presentation , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for detailed disclosures regarding the methodology used for allocated expenses from NETGEAR. Intangibles, net As of December 31, 2019 As of December 31, 2018 Gross Accumulated Amortization Net Gross Accumulated Amortization Net (In thousands) Technology $ 9,800 $ (8,540 ) $ 1,260 $ 9,800 $ (7,165 ) $ 2,635 Other 500 (454 ) 46 800 (612 ) 188 Total intangibles, net $ 10,300 $ (8,994 ) $ 1,306 $ 10,600 $ (7,777 ) $ 2,823 As of December 31, 2019 , the remaining weighted-average estimated useful life of intangibles was 0.9 years. Amortization of intangibles was $1.5 million , $1.5 million and $1.9 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. No impairment charges were recorded for all periods presented. As of December 31, 2019 , estimated amortization expense related to finite-lived intangibles for the remaining year was $1.3 million . Goodwill As of December 31, 2019 2018 (In thousands) Goodwill $ 11,038 $ 15,638 On December 30, 2019, the Company derecognized $4.6 million goodwill associated with the Company's commercial operations in Europe, which was incorporated in the calculation of the gain on the sale of business to Verisure. Goodwill Impairment The Company performs an annual assessment of goodwill at the reporting unit level on the first day of the fourth fiscal quarter and during interim periods if there are triggering events to reassess goodwill. The Company’s common stock declined after the Company announced its fourth quarter of fiscal year 2018 earnings release on February 5, 2019. The average closing price per share for the common stock for the eight trading days after such earnings release was $3.71 , a 223.3% decrease compared to the average closing price for the fourth quarter of fiscal year 2018. A sustained decline in common stock and the resulting impact to the Company’s market capitalization as well as a downward revision to the Company’s business outlook for fiscal year ending December 31, 2019 are qualitative factors to consider when evaluating whether events or changes in circumstances indicate it is a more likely than not a potential goodwill impairment exists. Management performed a quantitative assessment of impairment on October 1, 2019 in accordance with its policy and with consideration of qualitative factors, and performed a further quantitative assessment of impairment on December 31, 2019. The Company operates as one operating and reportable segment. The Company utilized its market capitalization as a proxy for fair value of the business and compared it to the carrying amount as of October 1, 2019 . Based on the results of the quantitative assessment, the respective fair value was substantially in excess of the carrying amount by $68 million , or 38% . The Company updated its quantitative test as of December 31, 2019 at which time the fair value of the business was substantially in excess of the carrying amount by $115.7 million , or 57% . As fair value was greater than carrying amount, goodwill was not impaired as of December 31, 2019 . If there is a further decline in the Company’s stock price based on market conditions and deterioration of the Company’s business, the Company may have to record a charge to its earnings for the goodwill impairment of up to $11.0 million . Other non-current assets As of December 31, 2019 2018 (In thousands) Non-current deferred income taxes $ 1,318 $ 1,108 Deposits 764 4,084 Other 1,926 3,257 Total other non-current assets $ 4,008 $ 8,449 Accrued liabilities As of December 31, 2019 2018 (In thousands) Sales and marketing $ 53,974 75,863 Sales returns 28,817 49,247 Warranty obligation 3,169 3,712 Accrued employee compensation 11,795 11,897 Operating lease liabilities 3,912 — Freight 2,690 3,913 Current financing lease obligation — 1,632 Other 23,043 25,772 Total accrued liabilities $ 127,400 $ 172,036

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The following tables summarize assets and liabilities measured at fair value on a recurring basis as of December 31, 2019 and 2018 : As of December 31, 2019 Total Quoted market prices in active markets (Level 1) Significant other observable inputs (Level 2) (In thousands) Assets: Cash equivalents: money-market funds (<90 days) $ 31,472 $ 31,472 $ — Available-for-sale securities: U.S. treasuries (1) 19,990 19,990 — Foreign currency forward contracts (2) 27 — 27 Total assets measured at fair value $ 51,489 $ 51,462 $ 27 Liabilities: Foreign currency forward contracts (3) $ 375 $ — $ 375 Total liabilities measured at fair value $ 375 $ — $ 375 December 31, 2018 Total Quoted market prices in active markets (Level 1) Significant other observable inputs (Level 2) (In thousands) Assets: Cash equivalents: U.S. treasuries (<90 days) $ 438 $ 438 $ — Available-for-sale securities: U.S. treasuries (1) 49,737 49,737 — Foreign currency forward contracts (2) 322 — 322 Total assets measured at fair value $ 50,497 $ 50,175 $ 322 Liabilities: Foreign currency forward contracts (3) $ 71 $ — $ 71 Total liabilities measured at fair value $ 71 $ — $ 71 _________________________ (1) Included in Short-term investments on the Company’s consolidated balance sheets. (2) Included in Prepaid expenses and other current assets on the Company’s consolidated balance sheets. (3) Included in Accrued liabilities on the Company’s consolidated balance sheets . The Company’s investments in cash equivalents and available-for-sale securities are classified within Level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. The Company enters into foreign currency forward contracts with only those counterparties that have long-term credit ratings of A-/A3 or higher. The Company’s foreign currency forward contracts are classified within Level 2 of the fair value hierarchy as they are valued using pricing models that take into account the contract terms as well as currency rates and counterparty credit rates. The Company verifies the reasonableness of these pricing models using observable market data for related inputs into such models. Additionally, the Company includes an adjustment for non-performance risk in the recognized measure of fair value of derivative instruments. As of December 31, 2019 , the adjustment for non-performance risk did not have a material impact on the fair value of the Company’s foreign currency forward contracts. The carrying value of non-financial assets and liabilities measured at fair value in the financial statements on a recurring basis, including accounts receivable and accounts payable, approximate fair value due to their short maturities. As of December 31, 2019 , the Company has no Level 3 fair value assets or liabilities.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Fair value of derivative instruments The fair values of the Company’s derivative instruments and the line items on the consolidated balance sheets to which they were recorded as of December 31, 2019 and 2018 are summarized as follows: December 31, December 31, Derivative Assets Balance Sheet Location 2019 2018 Balance Sheet Location 2019 2018 (In thousands) (In thousands) Derivative assets not designated as hedging instruments Prepaid expenses and other current assets $ 27 $ 293 Other accrued liabilities $ 347 $ 46 Derivative assets designated as hedging instruments Prepaid expenses and other current assets — 29 Other accrued liabilities 28 25 Total $ 27 $ 322 $ 375 $ 71 Refer to Note 6 , Fair Value Measurements , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for detailed disclosures regarding fair value measurements in accordance with the authoritative guidance for fair value measurements and disclosures. Gross amounts offsetting of derivative instruments The Company has entered into master netting arrangements which allow net settlements under certain conditions. Although netting is permitted, it is currently the Company’s policy and practice to record all derivative assets and liabilities on a gross basis in the consolidated balance sheets. The following tables set forth the offsetting of derivative assets and liabilities as of December 31, 2019 and 2018 : As of December 31, 2019 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) HSBC $ 6 $ — $ 6 $ (6 ) $ — $ — Wells Fargo Bank 21 — 21 (21 ) — — Total $ 27 $ — $ 27 $ (27 ) $ — $ — As of December 31, 2019 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Liabilities Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) HSBC $ 83 $ — $ 83 $ (6 ) $ — $ 77 Wells Fargo Bank 292 — 292 (21 ) — 271 Total $ 375 $ — $ 375 $ (27 ) $ — $ 348 As of December 31, 2018 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) HSBC $ 100 $ — $ 100 $ — $ — $ 100 Wells Fargo Bank 222 — 222 (68 ) — 154 Total $ 322 $ — $ 322 $ (68 ) $ — $ 254 As of December 31, 2018 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) JP Morgan $ 3 $ — $ 3 $ — $ — $ 3 Wells Fargo Bank 68 — 68 (68 ) — — Total $ 71 $ — $ 71 $ (68 ) $ — $ 3 Cash flow hedges The Company typically hedges portions of its anticipated foreign currency exposure which generally are less than six months. The Company enters into about eight forward contracts per quarter with an average size of $2.0 million USD equivalent related to its cash flow hedging program. The effects of the Company’s cash flow hedges on the consolidated statements of operations for the years ended December 31, 2019 and 2018 are summarized as follows: Location and Amount of Gains (Losses) Recognized in Income on Cash Flow Hedges Year Ended December 31, 2019 Revenue Cost of revenue Research and development Sales and marketing General and administrative (In thousands) Statements of operations $ 370,007 $ 334,203 $ 69,384 $ 56,985 $ 47,624 Gains (losses) on cash flow hedge $ 390 $ (3 ) $ (28 ) $ (44 ) $ (13 ) Location and Amount of Gains (Losses) Recognized in Income on Cash Flow Hedges Year Ended December 31, 2018 Revenue Cost of revenue Research and development Sales and marketing General and administrative (In thousands) Statements of operations $ 464,918 $ 372,843 $ 58,794 $ 52,593 $ 28,209 Gains (losses) on cash flow hedge $ 315 $ — $ (2 ) $ (28 ) $ (11 ) The Company expects to reclassify to earnings all of the amounts recorded in AOCI associated with its cash flow hedges over the next twelve months. For information on the unrealized gains or losses on derivatives reclassified out of AOCI into the consolidated statements of operations, refer to Note 8 , Accumulative Other Comprehensive Income (Loss) , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K. Derivative instruments designated as cash flow hedges must be de-designated as hedges when it is probable the forecasted hedged transaction will not occur within the designated hedge period or if not recognized within 60 days following the end of the hedge period. The Company did not recognize any material net gains or losses related to the loss of hedge designation as there were no discontinued cash flow hedges during the year ended December 31, 2019 and 2018 . Non-designated hedges The Company adjusts its non-designated hedges monthly and enters into about 10 non-designated derivative per quarter with an average size of $1.7 million USD equivalent. The hedges range typically from 1 to 3 months in duration. The effects of the Company’s non-designated hedge included in Other income (expense), net on the consolidated statements of operations for the years ended December 31, 2019 and 2018 are as follows: December 31, Derivatives Not Designated as Hedging Instruments Location of Gains (Losses) Recognized in Income on Derivative 2019 2018 (In thousands) Foreign currency forward contracts Other income (expense), net $ (24 ) $ 589

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss) (Notes)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The following table sets forth the changes in accumulated other comprehensive income (loss) (“AOCI”) by component for the years ended December 31, 2019 and 2018 : Unrealized gains (losses) on available-for-sale securities Unrealized gains (losses) on derivatives Estimated tax benefit (provision) Total (In thousands) Balance as of December 31, 2017 $ — $ — $ — $ — Other comprehensive income (loss) before reclassifications (2 ) 276 — 274 Less: Amount reclassified from accumulated other comprehensive income (loss) — 274 — 274 Net current period other comprehensive income (loss) (2 ) 2 — — Balance as of December 31, 2018 (2 ) 2 — — Other comprehensive income (loss) before reclassifications 25 275 — 300 Less: Amount reclassified from accumulated other comprehensive income (loss) — 302 — 302 Net current period other comprehensive income (loss) 25 (27 ) — (2 ) Balance as of December 31, 2019 $ 23 $ (25 ) $ — $ (2 ) The following tables provide details about significant amounts reclassified out of each component of AOCI for the years ended December 31, 2019 and 2018 : Year Ended December 31, 2019 Year Ended December 31, 2018 Gains (Losses) Recognized in OCI - Effective Portion Gains (Losses) Reclassified from OCI to Income - Effective Portion Gains (Losses) Recognized in OCI - Effective Portion Gains (Losses) Reclassified from OCI to Income - Effective Portion Affected Line Item in the Statements of Operations (In thousands) Gains (losses) on cash flow hedge: Foreign currency contracts $ 275 $ 390 $ 276 $ 315 Revenue Foreign currency contracts — (3 ) — — Cost of revenue Foreign currency contracts — (28 ) — (2 ) Research and development Foreign currency contracts — (44 ) — (28 ) Sales and marketing Foreign currency contracts — (13 ) — (11 ) General and administrative $ 275 $ 302 $ 276 $ 274 Total * _________________________

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income (loss) before provision for income taxes consisted of the following: Year Ended December 31, 2019 2018 2017 (In thousands) United States $ (103,836 ) $ (79,581 ) $ 3,318 International 22,265 4,870 4,359 Total $ (81,571 ) $ (74,711 ) $ 7,677 Provision for income taxes consisted of the following: Year Ended December 31, 2019 2018 2017 (In thousands) Current: U.S. Federal $ — $ — $ — State 58 16 260 Foreign 4,524 1,425 1,255 4,582 1,441 1,515 Deferred: U.S. Federal — — (66 ) State — — — Foreign (202 ) (669 ) (321 ) (202 ) (669 ) (387 ) Total $ 4,380 $ 772 $ 1,128 Net deferred tax assets consisted of the following: As of December 31, 2019 2018 (In thousands) Deferred Tax Assets: Accruals and allowances $ 11,334 $ 17,974 Net operating loss carryforwards 14,355 2,946 Stock-based compensation 3,228 1,927 Lease liabilities 8,212 — Deferred revenue 4,417 2,573 Tax credit carryforwards 3,262 — Depreciation and amortization 7,877 567 Deferred rent — 373 Total deferred tax assets 52,685 26,360 Deferred Tax Liabilities: Depreciation and amortization — (775 ) Lease assets (7,450 ) — Total deferred tax liabilities (7,450 ) (775 ) Valuation Allowance (43,917 ) (24,477 ) Net deferred tax assets $ 1,318 $ 1,108 Changes in allowance for deferred tax assets were as follows: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at the beginning of the period $ 24,477 $ 15,611 $ 22,155 Additions 38,336 13,760 10,896 Deductions (18,896 ) (4,894 ) (17,440 ) Balance at the end of the period $ 43,917 $ 24,477 $ 15,611 Realization of the Company’s deferred tax assets is dependent upon future earnings, if any, the timing and amount of which are uncertain. The Company does not anticipate to realize the net U.S. federal and state deferred tax assets and certain foreign tax attributes, which have been fully offset by a valuation allowance. As of December 31, 2019 and 2018 , the valuation allowance was $43.9 million and $24.5 million , respectively. Accordingly, the valuation allowance increased by $19.4 million during 2019 mainly caused by the increase in attribute carryforwards and capitalized expenditures, partially offset with the decrease in accruals and allowances. The deferred tax asset related to tax credit carryforwards was decreased to zero in 2018 as a result of transferring the attributes to NETGEAR per the tax matters agreement. The utilization of our net operating loss and credit carryforwards may be subject to annual limitation due to the ownership changes provided by the Internal Revenue Code and similar state provisions. Such an annual limitation could result in the expiration of the net operating loss and tax credit carryforwards before utilization. As of December 31, 2019, net operating loss carryforwards consisted of the following: Amount Beginning Year of Expiration (in thousands) U.S. Federal (1) $ 14,028 2031 U.S. Federal 47,059 Indefinite California 44,613 2039 Other State (tax effected, net of federal benefit) 836 2024 _________________________ (1) All of the losses are subject to annual usage limitations under Internal Revenue Code Section 382. As of December 31, 2019 , tax credit carryforwards consisted of the following: Amount Beginning Year of Expiration (in thousands) U.S. Federal $ 1,664 2039 California 1,395 Indefinite Foreign 814 2038 The effective tax rate differs from the applicable U.S. statutory federal rate as follows: Year Ended December 31, 2019 2018 2017 Tax at federal statutory rate (1) 21.0 % 21.0 % 35.0 % State, net of federal benefit 3.0 % 5.9 % (8.7 )% Impact of international operations 1.4 % 0.4 % (6.2 )% U.S. Taxes on Foreign Entities (3.6 )% (1.8 )% — % Stock-based compensation (2.6 )% (0.1 )% (5.0 )% Tax credits 1.6 % 1.5 % (6.8 )% Change in valuation allowance (23.8 )% (25.2 )% (105.1 )% Impact of the Tax Act — % — % 115.6 % Non-deductible transaction costs (0.7 )% (2.6 )% — % Goodwill derecognition (1.2 )% — % — % Others (0.5 )% (0.1 )% (4.1 )% Provision for income taxes (5.4 )% (1.0 )% 14.7 % _________________________ (1) The Tax Act of 2017 reduced the U.S federal statutory tax rate from 35% to 21% beginning in 2018. The increase in provision for income taxes for the year ended December 31, 2019 compared to 2018 was primarily due to higher foreign earnings in 2019 and the gain on sale of certain assets related to the Company's commercial operations in Europe during the fourth quarter of 2019. Losses incurred predominantly in the U.S. continue to be subject to a full valuation allowance. The decrease provision for income taxes for the year ended December 31, 2018 compared to 2017 was primarily caused by the deemed repatriation of foreign earnings in 2017 following the 2017 U.S. Tax Act. The negative 1.0% effective tax rate was a result of losses in the U.S. for which the Company didn't recognize tax benefit due to its full U.S. federal and state valuation allowance. As of December 31, 2019 , withholding taxes and state income taxes expected to be incurred on foreign subsidiaries’ earnings that are not considered indefinitely reinvested are not material. A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (“UTB”) is as follows: Federal, State, and Foreign Tax (In thousands) Balance as of December 31, 2016 $ 676 Additions based on tax positions related to the current year 361 Additions for tax positions of prior years 30 Reductions for tax positions of prior years (45 ) Balance as of December 31, 2017 1,022 Additions based on tax positions related to the current year 338 Adjustments to Net parent investments (1,338 ) Balance as of December 31, 2018 22 Additions based on tax positions related to the current year 674 Additions for tax positions of prior years 8 Balance as of December 31, 2019 $ 704 The total amount of unrecognized tax benefits, including interest and penalties, was $0.7 million and $0.02 million as of December 31, 2019 and 2018 respectively; if recognized, there would be immaterial impact to the Company's effective tax rate. The Company recognizes interest and penalties accrued related to unrecognized tax benefits as part of the provision for income taxes. The Company files income tax returns in the U.S., various state and foreign jurisdictions. The income taxes are subject to review by taxing jurisdictions globally. As a result of the spin-off of Arlo from NETGEAR in 2018, Arlo received certain net operating losses generated before 2017. Therefore, tax years ended on or after December 31, 2016 are subject to examination in the U.S. In addition, tax years ending on or after December 31, 2018 are subject to examination in Ireland and State of California in the U.S. The Company's estimate of the potential outcome of any uncertain tax positions is subject to management’s assessment of relevant risks, facts, and circumstances existing at that time. The Company believes that the estimate has adequately reflected these matters. However, the Company's future results may include adjustments to estimates in the period the audits will be resolved, which may impact the Company's effective tax rate. The Company does not expect a significant change in unrecognized tax benefits within the next twelve months.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Leases The Company primarily leases office space, with various expiration dates through June 2029 . Some of the leases include options to extend such leases for up to five years , and some include options to terminate such leases within one year . The terms of certain of the Company’s leases provide for rental payments on a graduated scale. The Company recognizes lease expense on a straight-line basis over the lease term. For six months ended July 1, 2018 and the year ended December 31, 2017 , lease expense reflected allocations from NETGEAR and may not be indicative of the Company’s results. Lease expense was $1.4 million after the Separation through December 31, 2018 and $7.0 million for the year ended December 31, 2019 . The lease expense was recorded within Cost of revenue, Research and development, Sales and marketing, and General and administrative on the Company's consolidated statements of operations. Short-term and variable lease costs were included in the lease expense and they were immaterial. The effect of accounting standards adoption of ASU 2016-02 on the consolidated statement of balance sheets and supplemental balance sheet information related to operating leases were as follows: Leases Balance Sheet Location December 31, 2019 January 1, 2019 December 31, 2018 (In thousands) Build-to-suit lease (1) Property and equipment, net $ — $ (21,610 ) $ 21,610 Build-to-suit lease (1) Accrued liabilities — (281 ) 281 Build-to-suit lease (1) Accrued liabilities — (1,632 ) 1,632 Build-to-suit lease (1) Non-current financing lease obligation — (19,978 ) 19,978 Build-to-suit lease (1) Retained earnings (Accumulated deficit) 281 281 — Operating leases (2) Operating lease right-of-use assets, net 31,300 14,400 — Operating leases (2) Accrued liabilities — (107 ) 107 Operating leases (2) Accrued liabilities 3,912 2,356 — Operating leases (2) Non-current deferred rent — (1,141 ) 1,141 Operating leases (2) Non-current operating lease liabilities 29,001 12,044 — ________________________ (1) The Company was deemed to be the accounting owner of its build-to-suit lease arrangement for its San Jose corporate headquarters and the construction was in progress at adoption date. As such, the Company reevaluated its build-to-suit lease arrangement under ASU 2016-02 to ascertain whether it meets the criteria as the accounting owner of the build-to-suit lease arrangement through control of the underlying leased asset. The Company concluded that it did not have control over the underlying leased asset. As a result, the Company de-recognized the build to suit asset and liability as of adoption date of $21.6 million of Property and equipment and $21.9 million of financing lease obligations. The difference of $0.3 million between the de-recognized assets and the associated financing lease obligations was recorded as an adjustment to Accumulated deficit as of the adoption date. (2) The Company adopted ASU 2016-02 on January 1, 2019 which resulted in the recognition of ROU assets and lease liabilities for operating leases of $14.4 million on its consolidated balance sheets. The ROU assets were reduced by $0.1 million current deferred rent and $1.1 million non-current deferred rent which were de-recognized along with the adoption. As of March 31, 2019, the construction of the Company’s leasehold improvements for its San Jose corporate headquarters was partially completed and partially occupied by the Company, resulting in lease commencement inception for the portion that was completed and occupied by the Company. Therefore, the Company proportionally recorded ROU assets and lease liabilities of $14.3 million , representing two thirds of the total value of the ROU assets and lease liabilities. As of June 30, 2019, upon the completion of the leasehold improvements and full occupation of the entire building, the Company recognized the remaining value of ROU assets and lease liabilities of $7.2 million . As of September 29, 2019, the Company received $3.1 million reimbursement for leasehold improvements that the Company de-recognized during the quarter. Supplemental cash flow information related to operating leases for the year ended December 31, 2019 was as follows: Year Ended December 31, 2019 (in thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 4,888 Right-of-use assets obtained in exchange for lease liabilities Operating leases $ 21,742 Other non-cash increases in operating right of use assets $ 788 Weighted average remaining lease term and weighted average discount rate related to operating leases as of December 31, 2019 were as follows: Weighted average remaining lease term 7.7 years Weighted average discount rate 5.67 % The maturity of lease liabilities related to operating leases for each of the next five years and thereafter as of December 31, 2019 was as follows (in thousands): 2020 $ 5,660 2021 5,735 2022 5,589 2023 4,908 2024 4,450 Thereafter 14,669 Total lease payments 41,011 Less: interest (1) (8,098 ) Total $ 32,913 Accrued liabilities $ 3,912 Non-current operating lease liabilities 29,001 Total $ 32,913 ________________________ (1) Calculated using the Company’s incremental borrowing rate on a collateralized basis plus LIBOR rate that closely matches contractual term of most leases on adoption date. As of December 31, 2018 , maturity of lease liabilities related to operating leases for each of the next five years and thereafter were as follows (in thousands): Leases (1) 2019 $ 4,634 2020 5,813 2021 5,678 2022 5,580 2023 4,903 Thereafter 19,252 Total $ 45,860 ________________________ (1) Amounts are based on ASC 840, Leases that was superseded upon the adoption of ASC 842, Leases on January 1, 2019. Letters of Credit In connection with the build-to-suit lease agreement for the headquarters located in San Jose, California, the Company executed a letter of credit with the landlord as the beneficiary. As of December 31, 2019 , the Company had approximately $3.6 million of unused letters of credit outstanding, of which $3.1 million pertains to the lease arrangement in San Jose, California. Purchase Obligations The Company has entered into various inventory-related purchase agreements with suppliers. Generally, under these agreements, 50% of orders are cancelable by giving a 46 to 60 days notice prior to the expected shipment date and 25% of orders are cancelable by giving a 31 to 45 days notice prior to the expected shipment date. Orders are non-cancelable within 30 days prior to the expected shipment date. As of December 31, 2019 , the Company had approximately $29.6 million in non-cancelable purchase commitments with suppliers, respectively. The Company establishes a loss liability for all products it does not expect to sell for which it has committed purchases from suppliers. As of December 31, 2019 , the loss liability from committed purchases was $1.1 million . From time to time the Company’s suppliers procure unique complex components on the Company’s behalf. If these components do not meet specified technical criteria or are defective, the Company should not be obligated to purchase the materials. Warranty Obligations Changes in the Company’s warranty liability, which is included in Accrued liabilities in the consolidated balance sheets, were as follows: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at the beginning of the period $ 3,712 $ 31,756 $ 15,949 Reclassified to sales returns upon adoption of ASC 606 (1) — (28,713 ) — Provision for warranty obligation made during the period 260 1,477 51,709 Settlements made during the period (803 ) (808 ) (35,902 ) Balance at the end of the period $ 3,169 $ 3,712 $ 31,756 ________________________ (1) Upon adoption of ASC 606 on January 1, 2018, warranty reserve balances totaling $28.7 million were reclassified to sales returns as these liabilities are payable to the Company’s customers and settled in cash or by credit on account. Under ASC 606, these amounts are to be accounted for as sales with right of return. Litigation and Other Legal Matters The Company is involved in disputes, litigation, and other legal actions, including, but not limited to, the matters described below. In all cases, at each reporting period, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under the provisions of the authoritative guidance that addresses accounting for contingencies. In such cases, the Company accrues for the amount, or if a range, the Company accrues the low end of the range, only if there is not a better estimate than any other amount within the range, as a component of legal expense within litigation reserves, net. The Company monitors developments in these legal matters that could affect the estimate the Company had previously accrued. In relation to such matters, the Company currently believes that there are no existing claims or proceedings that are likely to have a material adverse effect on its financial position within the next twelve months, or the outcome of these matters is currently not determinable. There are many uncertainties associated with any litigation, and these actions or other third-party claims against the Company may cause the Company to incur costly litigation and/or substantial settlement charges. In addition, the resolution of any intellectual property litigation may require the Company to make royalty payments, which could have an adverse effect in future periods. If any of those events were to occur, the Company's business, financial condition, results of operations, and cash flows could be adversely affected. The actual liability in any such matters may be materially different from the Company's estimates, which could result in the need to adjust the liability and record additional expenses. Beginning on December 11, 2018, purported stockholders of Arlo Technologies, Inc. filed six putative securities class action complaints in the Superior Court of California, County of Santa Clara, and one complaint in the U.S. District Court for the Northern District of California against the Company and certain of its executives and directors. Some of these actions also name as defendants the underwriters in the Company’s IPO and NETGEAR, Inc. The actions pending in state court are Aversa v. Arlo Technologies, Inc., et al. , No. 18CV339231, filed Dec. 11, 2018; Pham v. Arlo Technologies, Inc. et al. , No. 19CV340741, filed January 9, 2019; Patel v. Arlo Technologies, Inc. , No. 19CV340758, filed January 10, 2019; Perros v. NetGear, Inc. , No. 19CV342071, filed February 1, 2019; Vardanian v. Arlo Technologies, Inc. , No. 19CV342318, filed February 8, 2019; and Hill v. Arlo Technologies, Inc. et al. , No. 19CV343033, filed February 22, 2019. On April 26, 2019, the state court consolidated these actions as In re Arlo Technologies, Inc. Shareholder Litigation , No. 18CV339231 (the “State Action"). The action pending in federal court is Wong v. Arlo Technologies, Inc. et al. , No. 19-CV-00372 (the “Federal Action”). The plaintiffs in the State Action filed a consolidated complaint on May 1, 2019. The consolidated complaint generally alleges that the Company failed to adequately disclose quality control problems and adverse sales trends ahead of its IPO, violating the Securities Act of 1933, as amended. The complaint seeks unspecified monetary damages and other relief on behalf of investors who purchased Arlo common stock issued pursuant and/or traceable to the IPO offering documents. On June 21, 2019, the court stayed the State Action pending resolution of the Federal Action, given the substantial overlap between the claims. The court has set a case management conference for June 19, 2020, so the parties can provide an update regarding the status of the Federal Action. In the Federal Action, four investors filed motions to be appointed lead plaintiff. On May 6, 2019, the court appointed a shareholder named Matis Nayman to serve as lead plaintiff and the law firm of Keller Lenkner LLC as lead counsel. On June 7, 2019, plaintiff filed an amended complaint, which alleges that defendants violated the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, by failing to adequately disclose quality control problems and adverse sales trends surrounding the Company’s IPO. The amended complaint also named as defendants the underwriters in the IPO and NETGEAR, Inc. Defendants filed a motion to dismiss the amended complaint on August 6, 2019. Plaintiff opposed the motion to dismiss on September 6, 2019, and defendants filed a reply on October 4, 2019. On December 19, 2019, the court granted defendants’ motion to dismiss with leave to amend. On February 13, 2020, plaintiff filed a second amended complaint. On the same day, the parties asked the court to stay the case to allow for plaintiff to file a motion for preliminary approval of a class-wide settlement. On February 14, 2020, the court agreed to stay the case until March 30, 2020. In addition, a shareholder named Leonard Pinto filed a tagalong derivative action on June 13, 2019 (the “Derivative Action”) in the Northern District of California. The action is brought on behalf of the Company against the majority of the Company’s current directors. The complaint is based on the same alleged misconduct as the securities class actions but asserts claims for breach of fiduciary duty, waste of corporate assets, and violation of the Securities Exchange Act of 1934, as amended. On August 20, 2019, the court stayed the Derivative Action in deference to the Federal Action. Regardless of the merits or ultimate results of the above-described litigation matters, they could result in substantial costs, which would hurt the Company’s financial condition and results of operations and divert management’s attention and resources from our business. As of December 31, 2019, the Company had accrued a loss contingency of $1.25 million for the Federal Action. Indemnification of Directors and Officers The Company, as permitted under Delaware law and in accordance with its bylaws, has agreed to indemnify its officers and directors for certain events or occurrences, subject to certain conditions, while the officer or director is or was serving at the Company’s request in such capacity. The term of the indemnification period is for the officer’s or director’s lifetime. The maximum amount of potential future indemnification is unlimited; however, the Company has a director and officer insurance policy that will enable it to recover a portion of any future amounts paid. As a result of its insurance policy coverage, the Company believes the fair value of each indemnification agreement will be minimal. The Company had no liabilities recorded for these agreements as of December 31, 2019 and 2018 . Indemnifications Prior to the completion of the IPO, the Company historically participated in NETGEAR’s sales agreements. In its sales agreements, NETGEAR typically agrees to indemnify its direct customers, distributors and resellers (the “Indemnified Parties”) for any expenses or liability resulting from claimed infringements by NETGEAR’s products of patents, trademarks or copyrights of third parties that are asserted against the Indemnified Parties, subject to customary carve-outs. The terms of these indemnification agreements are generally perpetual after execution of the agreement. The maximum amount of potential future indemnification is generally unlimited. From time to time, the Company receives requests for indemnity and may choose to assume the defense of such litigation asserted against the Indemnified Parties. The Company had no liabilities recorded for these agreements as of December 31, 2019 and 2018 . In connection with the Separation, and after July 1, 2018, certain sales agreements were transferred to the Company, and the Company has replaced certain shared contracts, which include similar indemnification terms. In addition, pursuant to the master separation agreement and certain other agreements entered into with NETGEAR in connection with the Separation and the IPO, NETGEAR has agreed to indemnify the Company for certain liabilities. The master separation agreement provides for cross-indemnities principally designed to place financial responsibility for the obligations and liabilities of its business with the Company and financial responsibility for the obligations and liabilities of NETGEAR’s business with NETGEAR. Under the intellectual property rights cross-license agreement entered into between the Company and NETGEAR, each party, in its capacity as a licensee, indemnifies the other party, in its capacity as a licensor, and its directors, officers, agents, successors and subsidiaries against any losses suffered by such indemnified party as a result of the indemnifying party’s practice of the intellectual property licensed to such indemnifying party under the intellectual property rights cross-license agreement. Also, under the tax matters agreement entered into between the Company and NETGEAR, each party is liable for, and indemnifies the other party and its subsidiaries from and against any liability for, taxes that are allocated to the indemnifying party under the tax matters agreement. In addition, the Company has agreed in the tax matters agreement that each party will generally be responsible for any taxes and related amounts imposed on it or NETGEAR as a result of the failure of the Distribution, together with certain related transactions, to qualify as a transaction that is generally tax-free, for U.S. federal income tax purposes, under Sections 355 and 368(a)(1)(D) and certain other relevant provisions of the Code, to the extent that the failure to so qualify is attributable to actions, events or transactions relating to such party’s respective stock, assets or business, or a breach of the relevant representations or covenants made by that party in the tax matters agreement. The transition services agreement generally provides that the applicable service recipient indemnifies the applicable service provider for liabilities that such service provider incurs arising from the provision of services other than liabilities arising from such service provider’s gross negligence, bad faith or willful misconduct or material breach of the transition services agreement, and that the applicable service provider indemnifies the applicable service recipient for liabilities that such service recipient incurs arising from such service provider’s gross negligence, bad faith or willful misconduct or material breach of the transition services agreement. Pursuant to the registration rights agreement, the Company has agreed to indemnify NETGEAR and its subsidiaries that hold registrable securities (and their directors, officers, agents and, if applicable, each other person who controls such holder under Section 15 of the Securities Act) registering shares pursuant to the registration rights agreement against certain losses, expenses and liabilities under the Securities Act, common law or otherwise. NETGEAR and its subsidiaries that hold registrable securities similarly indemnify the Company but such indemnification will be limited to an amount equal to the net proceeds received by such holder under the sale of registrable securities giving rise to the indemnification obligation. Refer to Note 1 , The Company and Basis of Presentation , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for details relating to the Company’s IPO and related transactions. Change in Control and Severance Agreements The Company has entered into change in control and severance agreements with certain of its key executives (the “Severance Agreements”). Pursuant to the Severance Agreements, upon a termination without cause or resignation with good reason, the individual would be entitled to (1) cash severance equal to (a) the individual’s annual base salary and an additional amount equal to his or her target annual bonus (for the Chief Executive Officer and Chief Financial Officer) or (b) the individual’s base salary for six months (for other key executives), (2) (a) 12 months of health benefits continuation (for the Chief Executive Officer and Chief Financial Officer) or (b) six months of health benefits continuation (for other key executives) and (3) accelerated vesting of any unvested equity awards that would have vested during the 12 months following the termination date. Upon a termination without cause or resignation with good reason that occurs during the one month prior to or 12 months following a change in control, the individual would be entitled to (1) (a) cash severance equal to a multiple (2 times for the Chief Executive Officer and 1.5 times for the Chief Financial Officer) of the sum of the individual’s annual base salary and target annual bonus (for the Chief Executive Officer and Chief Financial Officer) or (b) a cash severance equal to the individual’s annual base salary (for other key executives), (2) a number of months of health benefits continuation (24 months for the Chief Executive Officer, 18 months for the Chief Financial Officer, and 12 months for other key executives) and (3) vesting of all outstanding, unvested equity awards. Severance will be conditioned upon the execution and non-revocation of a release of claims. The Company had no liabilities recorded for these agreements as of September 29, 2019. On May 2, 2019, the Company and Patrick J. Collins III, the Company’s Senior Vice President of Products, entered into a Separation and Release Agreement (the “Separation Agreement”) regarding Mr. Collins’ separation from the Company, effective May 1, 2019. Pursuant to the Separation Agreement, Mr. Collins received cash severance equal to the his annual base salary, 12 months of health benefits continuation and accelerated vesting of any of his unvested equity awards that would have vested during the 12 months following the termination date. Employment Agreements NETGEAR has signed various employment agreements with the Company’s key executives pursuant to which, if their employment is terminated without cause, such employees are entitled to receive their base salary (and commission or bonus, as applicable) for up to one year. Such employees will also continue to have equity awards vest for up to a one -year period following such termination without cause. If a termination without cause or resignation for good reason occurs within one year of a change in control, certain key employees are entitled to up to two years acceleration of any unvested portion of his or her equity awards. The Company had no liabilities recorded for these agreements as of December 31, 2019 and 2018 . In connection with the completion of the IPO, the Company entered into executive confirmatory employment offer letters and change in control and severance agreements with each of the Company’s key executives, which superseded and replaced any employment arrangements that such executives had previously entered into with NETGEAR. Refer to Note 1 , The Company and Basis of Presentation , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for details relating to the Company’s IPO and related transactions. Environmental Regulation The Company is required to comply and is currently in compliance with the European Union (“EU”) and other Directives on the Restrictions of the use of Certain Hazardous Substances in Electrical and Electronic Equipment (“RoHS”), Waste Electrical and Electronic Equipment (“WEEE”) requirements, Energy Using Product (“EuP”) requirements, the REACH Regulation, Packaging Directive and the Battery Directive. The Company is subject to various federal, state, local, and foreign environmental laws and regulations, including those governing the use, discharge, and disposal of hazardous substances in the ordinary course of its manufacturing process. The Company believes that its current manufacturing and other operations comply in all material respects with applicable environmental laws and regulations; however, it is possible that future environmental legislation may be enacted or current environmental legislation may be interpreted to create an environmental liability with respect to its facilities, operations, or products.

Debt (Notes)

Debt (Notes)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Debt	Debt Revolving Credit Facility On November 5, 2019, the Company entered into a Business Financing Agreement (the “Credit Agreement”) with Western Alliance Bank, an Arizona corporation, as lender (the “Lender”). The Credit Agreement provides for a two-year revolving credit facility (the “Credit Facility”) that matures on November 5, 2021 and that may, by its terms, be extended by mutual written agreement between the Company and the Lender. Borrowings under the Credit Facility are limited to the lesser of (x) $40.0 million , and (y) an amount equal to the borrowing base. The borrowing base will be 60% of the Company’s eligible receivables and eligible accounts receivable, less such reserves as the Lender may deem proper and necessary from time to time. The Lender is not required to make any advance under the Credit Facility during the period beginning on January 1st and continuing through June 30th, except for advances made against eligible receivables first invoiced between July 1 and December 31, 2019. The Credit Agreement also includes sublimits for the issuance by the Lender of letters of credit, credit card indebtedness and foreign exchange forward contract. Repayment of the borrowings under the Credit Facility are due upon collection of the eligible receivables. The proceeds of the borrowings under the Credit Facility may be used for working capital and general corporate purposes. The obligations of the Company under the Credit Agreement are secured by substantially all of the Company’s domestic personal property, excluding intellectual property assets and more than 65% of the shares of voting capital stock of any of the Company’s foreign subsidiaries. Borrowings under the Credit Agreement generally bear interest at floating rates based upon the prime rate plus two and one-quarter percentage points ( 2.25% ), plus an additional five percentage points ( 5.0% ) during any period that an event of default has occurred and is continuing. Among other fees, the Company is required to pay an annual facility fee equal to 0.25% of the limit under the Credit Facility due upon entry into the Credit Agreement and on each anniversary thereof. The annual facility fee is capitalized and being amortized as interest expense over a 12-month period. The Company incurred debt issuance costs for the Credit Agreement, which are recorded in prepaid expenses and other current assets in the Company's Consolidated Balance Sheets and are being amortized as interest expense over the contractual term of the Credit Agreement. The Credit Agreement contains customary events of default and other restrictions, including a financial covenant that requires the Company to maintain certain amount of domestic cash and certain restrictions on the Company’s ability to incur additional indebtedness, consolidate or merge, enter into acquisitions, pay any dividend or distribution on the Company’s capital stock, redeem, retire or purchase shares of the Company’s capital stock, make investments or pledge or transfer assets, in each case subject to limited exceptions. If an event of default under the Credit Agreement occurs, then the Lender may cease making advances under the Credit Agreement and declare any outstanding obligations under the Credit Agreement to be immediately due and payable. In addition, if the Company files a bankruptcy petition, a bankruptcy petition is filed against the Company and is not dismissed or stayed within forty-five days, or the Company makes a general assignment for the benefit of creditors, then any outstanding obligations under the Credit Agreement will automatically and without notice or demand become immediately due and payable. As of December 31, 2019 , the Company is in compliance with all the covenants of the Credit Agreement. No amounts had been drawn under the Credit Facility as of December 31, 2019 .

Restructuring Related Charges

Restructuring Related Charges	12 Months Ended
	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring Related Charges	Restructuring Related Charges On November 7, 2019, the Company announced a restructuring plan that includes, but is not limited to, reducing outside services, headcount, marketing and capital expenditures to manage the Company's operating expenses. As a result, the Company recorded restructuring charges of $631 thousand during 2019, which were primarily associated with headcount-related charges under the restructuring plan. The following table represents the severance expense recorded in the Company's Consolidated Statements of Operations : Year Ended December 31, 2019 (In thousands) Cost of revenue $ 69 Research and development 262 Sales and marketing 198 General and administrative 102 Total $ 631 Accrued restructuring and other charges are classified within Accrued liabilities on the Company's Consolidated Balance Sheets . The following table provides a summary of accrued restructuring and other charges activity: Year Ended December 31, 2019 (In thousands) Balance at the beginning of the period $ — Additions 631 Cash payments (511 ) Balance at the end of the period $ 120

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2019
Employee Benefit and Share-based Payment Arrangement, Noncash Expense [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company’s employees have historically participated in NETGEAR’s various stock-based plans, which are described below and represent the portion of NETGEAR’s stock-based plans in which Arlo employees participated as of December 31, 2019 . The Company’s consolidated statements of operations reflect compensation expense for these stock-based plans associated with the portion of NETGEAR’s plans in which Arlo employees participated. On December 31, 2018, in connection with the Distribution, all outstanding NETGEAR equity awards (whether held by Arlo employees and non-employee directors or NETGEAR employees and non-employee directors) were equitably adjusted to reflect the impact of the Distribution. The adjustments to each type of award outstanding pursuant to the NETGEAR stock-based plans as of immediately prior to the Distribution was determined in accordance with the terms of the employee matters agreement between NETGEAR and Arlo, dated as of August 2, 2018 (the “employee matters agreement”). In connection with this adjustment, certain NETGEAR equity awards were adjusted into Arlo equity awards, as follows: • NETGEAR stock options granted prior to August 3, 2018 (the “cutoff date”) were converted into both an adjusted NETGEAR stock option and an Arlo stock option. The formulas applicable to the adjustment are set forth in the employee matters agreement and, in each case, the exercise price and number of shares subject to each option was adjusted to preserve the aggregate intrinsic value of the original NETGEAR stock option as measured immediately prior to and immediately following the Distribution, subject to rounding. Following the Distribution, the NETGEAR stock options and Arlo stock options are subject to substantially the same terms and vesting conditions that applied to the original NETGEAR stock option immediately prior to the Distribution. • NETGEAR restricted stock units granted prior to the cutoff date were converted into both an adjusted NETGEAR restricted stock unit covering the same number of shares of NETGEAR common stock subject to the award prior to the distribution and an Arlo restricted stock unit covering a number of shares of Arlo common stock equal to the number of shares of NETGEAR common stock subject to the award prior to the distribution multiplied by 1.980295 , subject to rounding, which is the number of shares of Arlo common stock that was distributed in respect of each share of NETGEAR common stock in the Distribution. The formulas applicable to the foregoing NETGEAR restricted stock unit adjustment are set forth in the employee matters agreement. Following the Distribution, the NETGEAR restricted stock units and Arlo restricted stock units are subject to substantially the same terms and vesting conditions that applied to the original NETGEAR restricted stock units immediately prior to the Distribution. • NETGEAR stock options and NETGEAR restricted stock units held by non-U.S. holders: NETGEAR, in its sole discretion, determined to treat certain NETGEAR stock options and NETGEAR restricted stock unit awards that were outstanding as of the effective time of the Distribution and held by current and former service providers of Arlo and NETGEAR in jurisdictions other than the United States in a manner inconsistent with the immediately preceding two paragraphs, which, in certain jurisdiction, resulted in the issuance of additional Arlo stock options and/or Arlo restricted stock units. The Company did not recognize any incremental expense in connection with the conversion of NETGEAR’ equity awards into Arlo awards since the impact is immaterial. 2018 Equity Incentive Plan The Company grants options and RSUs under the 2018 Equity Incentive Plan (the "2018 Plan"), under which awards may be granted to all employees. Award vesting periods for this plan are generally three to four years . Options may be granted for periods of up to 10 years or such shorter term as may be provided in the agreement and at prices no less than 100% of the fair market value of Arlo’s common stock on the date of grant. Options granted under the 2018 Plan generally vest over four years , the first tranche at the end of 12 months and the remaining shares underlying the option vesting monthly over the remaining three years . The following table sets forth the available shares for future grants under the 2018 Plan as of December 31, 2019 and December 31, 2018 : Number of Shares (In thousands) Shares reserved as of August 2, 2018 7,500 Granted at IPO (1) (3,403 ) Granted during the period (137 ) Additional authorized shares in the Distribution 6,823 Converted in the Distribution (2) (6,823 ) Cancelled 9 Shares available for grants as of December 31, 2018 3,969 Additional authorized shares 2,970 Granted (4) (6,700 ) Forfeited/ cancelled (3) 2,011 Shares traded for taxes 380 Shares available for grants as of December 31, 2019 2,630 _________________________ (1) Includes Arlo IPO Options of 2.8 million shares granted to the Company’s NEOs with performance-based vesting criteria (in addition to service-based vesting criteria for any of such IPO Options that are deemed to have been earned). Each of the IPO Options will have a ten-year contractual term and an exercise price equal to the fair value of a share of Arlo common stock on the date of grant and will vest as follows: • The Tranche 1 Service Option will vest in equal monthly installments during the 24 -month period that begins on the two-year anniversary of the option grant date; • The Tranche 2 Performance Option will vest on the later of (i) the date (prior to the four -year anniversary of the grant date) of satisfaction of a cumulative registered accounts milestone and (ii) if the milestone has been satisfied prior to the applicable date, then (a) with respect to 25% of the Tranche 2 Performance Option, on the first anniversary of the option grant date, (b) with respect to 25% of the Tranche 2 Performance Option, on the second anniversary of the option grant date, and (c) with respect to the remaining 50% of the Tranche 2 Performance Option, in equal monthly installments during the 24-month period on the first day of each month beginning on September 1, 2020; • The Tranche 3 Performance Option will vest on the later of (i) the date (prior to the four -year anniversary of the grant date) of satisfaction of a paid recurring revenue milestone and (ii) if the milestone has been satisfied prior to the applicable date, then (a) with respect to 25% of the Tranche 3 Performance Option, on the first anniversary of the option grant date, (b) with respect to 25% of the Tranche 3 Performance Option, on the second anniversary of the option grant date, and (c) with respect to the remaining 50% of the Tranche 3 Performance Option, in equal monthly installments during the 24-month period on the first day of each month beginning on September 1, 2020; • The Tranche 4 Performance Option will vest on the one-year anniversary of the grant date based on the extent to which the revenue and non-GAAP gross profit milestones for the second half of fiscal 2018 are achieved; and • The Tranche 5 Performance Option will vest on the two-year anniversary of the grant date based on the extent to which the revenue and non-GAAP gross profit milestones for the fiscal 2019 are achieved. As of December 31, 2019, Tranches 2 and 3 are on track in achieving the performance milestones. However, Tranches 4 and 5 performance measurement period were completed and none of the performance milestones were achieved, hence, none of the shares vested. (2) On December 31, 2018, in connection with the Distribution, certain NETGEAR equity awards held by Arlo non-employee directors and employees and NETGEAR non-employee directors and employees were adjusted into equity awards with respect to Arlo common stock and NETGEAR common stock as described in more detail in the employee matters agreement. (3) Includes 0.3 million shares subject to awards that were cancelled in connection with Mr. Collins’ separation from the Company, 0.5 million shares subject to the IPO Options that were voluntarily forfeited by the Chief Executive Officer as the performance metrics for Tranches 4 and 5 of the IPO Options were not achieved, 59 thousand shares subject to the IPO Options issued to the Chief Financial Officer were cancelled as the performance metrics for Tranches 4 were not achieved, and 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction. (4) Includes $0.8 million shares consisting of RSUs ( 50% of the grant), PSUs ( 25% of the grant) and MPSUs ( 25% of the grant) granted to the Company's NEOs during the fiscal quarter ended September 29, 2019. The RSUs will vest in three equal annual installments during the period that begins on the RSU grant date. The PSUs will vest in three equal annual installments during the period that begins on the PSU grant date based on the extent to which a revenue milestone for the fiscal year ended December 31, 2019 is achieved. As of December 31, 2019, the revenue milestone was not achieved, hence the PSUs were pending cancellation. The MPSUs will vest at the end of the three-year period that begins on the MPSU grant date based on performance of the Company's common stock relative to the Russell 2000 Index (“the Benchmark”) during the three-year period from the grant date. This also includes 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction. ARLO Options The following table sets forth the weighted average assumptions used to estimate the fair value of Arlo’s stock options granted using Black-Scholes option pricing model during the years ended December 31, 2019 and 2018 and purchase rights granted under Arlo's ESPP during the year ended December 31, 2019: Stock Options ESPP 2019 2018 2019 Expected life (in years) 6.3 6.3 0.5 Risk-free interest rate 2.28 % 2.86 % 2.49 % Expected volatility 73.0 % 40.0 % 97.6 % Dividend yield — — — Because the Company’s common stock did not have sufficient history of being publicly traded at grant date, the estimated term of Arlo’s stock options granted was determined by a combination of using a simplified method, which is an average of the contractual term and vesting period of the stock options and using management best estimate of the expected term. The risk-free interest rate of stock options granted was based on the implied yield currently available on U.S. Treasury securities, with a remaining term commensurate with the estimated expected term. The estimated volatility assumption was calculated based on a compensation peer group analysis of stock price volatility on the grant date. Arlo’s stock option activity during the year ended of December 31, 2019 was as follows: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (1) (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 7,209 $ 12.08 Granted 10 3.90 Exercised (4 ) 3.03 Forfeited/ Cancelled (2) (938 ) 15.88 Expired (237 ) 10.00 Outstanding as of December 31, 2019 6,040 $ 11.56 6.39 $ 3,100 Vested and expected to vest as of December 31, 2019 6,040 $ 11.56 6.39 $ 3,100 Exercisable Options as of December 31, 2019 3,238 $ 8.54 4.64 $ — _________________________ (1) Representing the total pre-tax intrinsic values (the difference between the Company’s closing stock price on the last trading day of 2019 and the exercise price, multiplied by the number of shares underlying the in-the-money options) that would have been received by the option holders had all option holders exercised their options on December 31, 2019 . This amount changes based on the fair market value of the Company’s stock. (2) Includes 0.3 million shares subject to awards that were cancelled in connection with Mr. Collins’ separation from the Company. In addition, also includes 0.5 million shares subject to the IPO Options that were voluntarily forfeited by the Chief Executive Officer as the performance metrics for Tranches 4 and 5 of the IPO Options were not expected to be achieved. Year Ended December 31, 2019 2018 (In millions, except per share data) Total intrinsic value of options exercised $ — $ — Total fair value of options vested $ 3.10 $ — Weighted-average grant date fair value per share of options granted $ 2.59 $ 7.02 The following table summarizes significant ranges of outstanding Arlo’s stock options as of December 31, 2019 . Options Outstanding Options Exercisable Range of Exercise Prices Shares Outstanding Weighted- Average Remaining Contractual Life Weighted- Average Exercise Price Per Share Shares Exercisable Weighted- Average Exercise Price Per Share (In thousands) (In years) (In dollars) (In thousands) (In dollars) 3.90 - 6.68 1,241 3.79 $ 6.52 1,231 $ 6.54 6.80 - 8.11 1,107 3.56 7.59 1,071 7.58 8.21 - 10.09 637 6.92 8.84 407 8.83 13.23 - 13.23 60 8.59 13.23 20 13.23 14.39 - 14.39 616 7.49 14.39 321 14.39 16.00 - 16.00 2,379 8.59 16.00 188 16.00 3.90 - 16.00 6,040 6.39 11.56 3,238 8.54 NETGEAR Options The following table sets forth the weighted average assumptions used to estimate the fair value of NETGEAR’s stock options granted and purchase rights granted under the NETGEAR’s ESPP to employees specifically identifiable to Arlo during the years ended December 31, 2018 and 2017 : Stock Options ESPP (1) 2018 2017 2018 2017 Expected life (in years) 4.4 4.4 0.5 0.5 Risk-free interest rate 2.32 % 1.66 % 1.81 % 0.93 % Expected volatility 30.9 % 31.6 % 37.1 % 29.7 % Dividend yield — — — — _________________________ (1) Arlo employees have completed their participation into NETGEAR’s ESPP by the end of the second quarter of fiscal 2018. As of December 31, 2018, no shares had been purchased under the 2018 ESPP by Arlo employees, as the program was suspended until the completion of the Distribution. The estimated expected term of NETGEAR’s options granted to employees specifically identifiable to Arlo under NETGEAR’s plans is derived from historical data on employee exercise and post-vesting employment termination behavior. The risk-free interest rate of options granted and the purchase rights granted under NETGEAR’s ESPP is based on the implied yield currently available on U.S. Treasury securities, with a remaining term commensurate with the estimated expected term. Expected volatility of NETGEAR’s options granted and the purchase rights granted under NETGEAR’s ESPP is based on historical volatility over the most recent period commensurate with the estimated expected term. NETGEAR’s stock option activity for employees specifically identifiable to Arlo during the year ended December 31, 2019 was as follows: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 283 $ 26.53 Exercised (48 ) 21.35 Forfeited/cancelled (16 ) 36.27 Expired (14 ) 41.67 Outstanding as of December 31, 2019 205 25.94 5.76 $ 427 Vested and expected to vest as of December 31, 2019 205 25.94 5.76 $ 427 Exercisable options as of December 31, 2019 162 24.08 5.25 $ 425 Year Ended December 31, 2019 2018 2017 (In millions, except per share data) Total intrinsic value of options exercised $ 0.6 $ 0.6 $ 0.5 Total fair value of options vested $ 0.8 $ 1.1 $ 0.2 Weighted-average grant date fair value per share of NETGEAR’s stock options granted to employees specifically identifiable to Arlo NA $ 20.63 $ 12.25 For the year ended December 31, 2018, cash received from NETGEAR stock option exercises and ESPP purchases by employees specifically identifiable to Arlo was $0.4 million through the completion of the IPO. Cash received from NETGEAR stock option exercises and ESPP purchases by employees specifically identifiable to Arlo was $1.6 million for the years ended December 31, 2017. ARLO RSUs Arlo’s RSU activity during the year ended of December 31, 2019 was as follows: Range of Exercise Prices Number of Shares Weighted Average Grant Date Fair Value Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 3,141 $ 12.22 Granted (1) 6,690 4.77 Vested (1,146 ) 11.22 Cancelled (2) (834 ) 7.68 Outstanding as of December 31, 2019 7,851 $ 6.50 1.55 $ 33,051 _________________________ (1) Includes 0.8 million shares consisting of RSUs ( 50% of the grant), PSUs ( 25% of the grant) and MPSUs ( 25% of the grant) granted to a group of NEOs during the fiscal quarter ended September 29, 2019. The RSUs will vest in three equal annual installments during the period that begins on the RSU grant date. The PSUs will vest in three equal annual installments during the period that begins on the PSU grant date based on the extent to which a revenue milestone for the fiscal year ended December 31, 2019 is achieved. As of December 31, 2019, the revenue milestone was not achieved, hence the PSUs were pending cancellation. The MPSUs will vest at the end of the three -year period that begins on the MPSU grant date based on performance of the Company's common stock relative to the Benchmark during the three -year period from the grant date. A positive 3.3 x or negative 2.5 x multiplier will be applied to the total shareholder returns (“TSR”), such that the number of shares vested will increase by 3.3% or decrease by 2.5% of the target numbers, for each 1% of positive or negative TSR relative to the Benchmark. In the event the Company's common stock performance is below negative 30% relative to the Benchmark, no shares will be vested. In no event will the number of shares vested exceed 200% of the target for that tranche. In addition, includes 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction. (2) Includes 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction. Year Ended December 31, 2019 2018 (In millions, except per share data) Total intrinsic value of RSUs vested (the release date fair value) $ 5.51 $ 0.04 Total fair value of RSUs vested (the grant date fair value) $ 12.90 $ 0.04 Weighted-average fair value of RSUs granted $ 4.77 $ 14.46 The Company determined the fair value of the PSUs using the closing price of the Company's common stock as of the grant date. For PSUs, stock-based compensation expense of performance milestone is recognized over the expected performance achievement period when the achievement becomes probable. The Company utilized a Monte Carlo pricing model customized to the specific provisions of the 2018 Plan to value the MPSUs awards on the grant date. The fair value of the MPSUs granted during the three months ended September 29, 2019 was $4.14 per share. The assumptions used in this model to estimate fair value at the grant date are as follows: Year Ended December 31, Expected life 3.0 Risk-free interest rate 1.52 % Expected volatility 65.1 % Dividend yield — Stock Beta 0.30 As part of the Verisure transaction, certain employees who held Company RSU awards granted under the 2018 Plan, were transferred to Verisure. Such RSU awards will continue to vest and settle after the closing of the transaction in accordance with the terms and conditions under the original award’s plan. Management determined that the modification of the RSUs awards is a Type III modification (improbable-to-probable) under ASC 718, under which any compensation expense previously recognized was reversed and the total fair value of the modified awards was recognized as a liability in the Company’s consolidated balance sheets on the closing date. Accordingly, the modification of the awards resulted in a liability of $859 thousand and total compensation expense of $623 thousand on the closing date. NETGEAR RSUs NETGEAR’s RSU activity for employees specifically identifiable to Arlo during the year ended December 31, 2019 was as follows: Number of Shares Weighted Average Grant Date Fair Value Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 522 $ 34.89 Transferred (1) 2 Vested (175 ) 32.04 Forfeited (71 ) 36.98 Outstanding as of December 31, 2019 278 36.14 1.08 $ 6,804 _________________________ (1) Transferred RSUs are attributable to employees that transferred from NETGEAR’s in the fourth quarter of 2019. Year Ended December 31, 2019 2018 2017 (In millions, except per share data) Total intrinsic value of RSUs vested (the release date fair value) $ 5.8 $ 6.9 $ 2.7 Total fair value of RSUs vested (the grant date fair value) $ 5.6 $ 5.0 $ 2.0 weighted-average fair value of RSUs granted NA $ 67.24 $ 52.89 For the year ended December 31, 2018, cash paid to administer the RSU withholdings relating to employees specifically identifiable to Arlo was $0.8 million through the completion of the IPO. Cash paid to administer the RSU withholdings relating to employees specifically identifiable to Arlo for the year ended December 31, 2017 was $1.1 million . Employee Stock Purchase Plan Under the 2018 ESPP, eligible employees may contribute up to 15% of compensation, subject to certain income limits, to purchase shares of Arlo’s common stock. The terms of the plan include a look-back feature that enables employees to purchase stock semi-annually at a price equal to 85% of the lesser of the fair market value at the beginning of the offering period or the purchase date. The duration of each offering period is generally six months, with the first offering period having commenced on February 15, 2019 and ended on August 14, 2019. As of December 31, 2019 , approximately $1.5 million shares were available for issuance under the ESPP. The Company’s employees have historically participated in NETGEAR’s ESPP. For the years ended December 31, 2018 and 2017 , the Company recognized ESPP compensation expense of $0.2 million for each period. For the years ended December 31, 2018 and 2017 , employees specifically identifiable to Arlo purchased approximately 37,000 and 19,000 shares of NETGEAR’s common stock at an average exercise price of $45.06 and $43.09 , respectively. Stock-Based Compensation Expense The Company's employees have historically participated in NETGEAR's various stock-based plans, which are described below and represent the portion of NETGEAR's stock-based plans in which Arlo employees participated. The Company's consolidated statements of income reflect compensation expense for these stock-based plans associated with the portion of NETGEAR's plans in which Arlo employees participated. The following tables set forth stock-based compensation expense for Arlo employees and allocated charges deemed attributable to Arlo operations resulting from NETGEAR’s and Arlo’s RSUs, PSUs, MPSUs and stock options, and the purchase rights under the NETGEAR’s ESPP included in the Company’s consolidated statements of operations during the periods indicated: Year Ended December 31, 2019 2018 2017 Total Direct (1) Indirect Total Direct Indirect Total Cost of revenue $ 2,013 $ 608 $ 583 $ 1,191 $ 102 $ 599 $ 701 Research and development 6,868 3,078 396 3,474 1,959 455 2,414 Sales and marketing 3,859 1,992 969 2,961 390 866 1,256 General and administrative 10,154 3,153 2,100 5,253 — 2,547 2,547 Total stock-based compensation expense (2) $ 22,894 $ 8,831 $ 4,048 $ 12,879 $ 2,451 $ 4,467 $ 6,918 _________________________ (1) Reflecting expenses for those legacy NETGEAR stock-based plans that have converted to equivalent Arlo stock-based plans upon the spin-off transaction. (2) There was no tax benefit as a result of the Company's net operating loss position. The Company recognizes these compensation expenses generally on a straight-line basis over the requisite service period of the award. As of December 31, 2019 , $12.5 million of unrecognized compensation cost related to Arlo’s stock options and IPO options was expected to be recognized over a weighted-average period of 2.6 years. At December 31, 2019, $27.8 million of unrecognized compensation cost related to unvested Arlo’s RSUs, PSUs and MPSUs was expected to be recognized over a weighted-average period of 2.7 years. As of December 31, 2019 , $0.4 million of unrecognized compensation cost related to NETGEAR’s stock options for Arlo employees was expected to be recognized over a weighted-average period of 1.7 years. At December 31, 2019, $7.2 million of unrecognized compensation cost related to unvested NETGEAR’s RSUs for Arlo employees was expected to be recognized over a weighted-average period of 1.9 years. 401(k) Plan The Company’s employees historically participated in NETGEAR’s 401(k) Plan, which was adopted in April 2000. Under NETGEAR’s 401(k) Plan, employees were able to contribute up to 100% of salary subject to the legal maximum while NETGEAR matched 50% of contributions for employees that remain active with NETGEAR or its subsidiaries through the end of the fiscal year, up to a maximum of $6,000 in employee contributions per fiscal year. During the years ended December 31, 2018 and 2017, the Company recognized $0.5 million and $0.2 million , respectively, in expenses for employees specifically identifiable to Arlo related to NETGEAR 401(k) Plan match. In January 2019, the Company adopted Arlo 401(k) Plan to which employees may contribute up to 100% of salary subject to the legal maximum. In the fourth quarter of fiscal year 2018, the Company began matching 50% of contributions for employees that remain active with the Company through the end of the fiscal year, up to a maximum of $8,000 in employee contributions per fiscal year. During the year ended December 31, 2019 , the Company recognized $1.5 million in expenses for Arlo employees related to Arlo 401(k) Plan match.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share Basic net income (loss) per share is computed by dividing the net income (loss) for the period by the weighted average number of common shares outstanding during the period. The weighted average number of shares outstanding for the basic and diluted net income (loss) per share for the periods prior to the completion of the IPO is based on the number of shares of Arlo common stock outstanding on August 2, 2018, the effective date of the registration statement relating to the IPO (the “IPO Registration Statement”). On that date, the Company issued 62,499,000 shares of common stock to the Company’s sole stockholder of record, NETGEAR (after which NETGEAR held 62,500,000 shares of common stock, which represented all of the then issued and outstanding common stock). Potentially dilutive common shares, such as common shares issuable upon exercise of stock options and vesting of restricted stock awards are typically reflected in the computation of diluted net income (loss) per share by application of the treasury stock method. For certain periods presented, due to the net losses reported, these potentially dilutive securities were excluded from the computation of diluted net loss per share, since their effect would be anti-dilutive. Net income (loss) per share for the years ended December 31, 2019 , 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 (In thousands, except for per share data) Numerator: Net income (loss) $ (85,951 ) $ (75,483 ) $ 6,549 Denominator: Weighted average common shares - basic 75,074 67,231 62,250 Potentially dilutive common shares — — — Stock option and RSU conversion (1) — — — Weighted average common shares - dilutive 75,074 67,231 62,250 Basic net income (loss) per share $ (1.14 ) $ (1.12 ) $ 0.11 Diluted net income (loss) per share $ (1.14 ) $ (1.12 ) $ 0.11 Anti-dilutive employee stock-based awards, excluded 9,692 1,109 — _________________________ (1) On December 31, 2018, 6.8 million of stock options and RSUs were added to the Company’s equity awards as issued and outstanding resulting from the adjustment of NETGEAR’s equity awards that were granted to both NETGEAR and Arlo employees and non-employee directors, a portion of which were converted as Arlo awards. The dilutive effect of these converted stock options and RSUs is reflected above per share by application of the treasury stock method and none are potentially dilutive.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Segment and Geographic Information	Segment and Geographic Information Segment Information The Company operates as one operating and reportable segment. The Company has identified its CEO as the Chief Operating Decision Maker (“CODM”). The CODM reviews financial information presented on a combined basis for purposes of allocating resources and evaluating financial performance. Geographic Information The Company conducts business across three geographic regions: Americas, EMEA and APAC. Revenue consists of gross product shipments and service revenue, less allowances for estimated sales returns, price protection, end-user customer rebates and other channel sales incentives deemed to be a reduction of revenue per the authoritative guidance for revenue recognition, net changes in deferred revenue, and gains or losses from hedging. For reporting purposes, revenue by geography is generally based upon the ship-to location of the customer for device sales and device location for service sales. The following table shows revenue by geography for the periods indicated: Year Ended December 31, 2019 2018 2017 (In thousands) Americas United States (“U.S.”) $ 190,061 $ 359,936 $ 279,504 Americas (excluding U.S.) 99,099 16,869 13,167 EMEA 57,232 65,462 58,795 APAC 23,615 22,651 19,192 Total revenue $ 370,007 $ 464,918 $ 370,658 The Company’s Property and equipment, net are located in the following geographic locations: As of December 31, 2019 2018 (In thousands) Americas United States (“U.S.”) $ 17,100 $ 45,053 Americas (excluding U.S.) 904 218 EMEA 316 567 APAC China 2,089 3,040 APAC (excluding China) 943 550 Total property and equipment, net $ 21,352 $ 49,428 Significant Customers Two customers accounted for 32.3% and 10.1% of revenue for the year ended December 31, 2019 . Three customers accounted for 24.4% , 17.5% , and 16.6% of revenue for the year ended December 31, 2018 . Three customers accounted for 28.3% , 16.4% , and 13.1% of revenue for the year ended December 31, 2017

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Prior to the completion of the Distribution on December 31, 2018, NETGEAR owned 62,500,000 shares of Arlo common stock and was considered a related party. The related party transactions between Arlo and NETGEAR were settled in cash. The related party receivables are reflected in Prepaid expenses and other current assets, and the related party payables are reflected in Accrued liabilities in the consolidated balance sheets. On August 2, 2018, in connection with the IPO, the Company entered into a master separation agreement, a transition services agreement, an intellectual property rights cross-license agreement, a tax matters agreement, an employee matters agreement, and a registration rights agreement, in each case with NETGEAR, which effect the Separation, provide a framework for the Company’s relationship with NETGEAR after the Separation and provide for the allocation between NETGEAR and the Company of NETGEAR’s assets, employees, liabilities and obligations (including its investments, property and employee benefits assets and liabilities) attributable to periods prior to, at and after the Separation. See below for detailed descriptions of those agreements. Pursuant to these agreements, NETGEAR transferred substantially all of the assets and liabilities and operations of Arlo business to the Company. As a result, net receivables from NETGEAR was $129 thousand and $12.2 million as of December 31, 2019 and 2018 , mainly relating to transition services, billing and collection services which were provided by NETGEAR. Additionally, the Company received a contribution of cash of approximately $70.9 million from NETGEAR in 2018. In the Distribution, all shares of Arlo common stock held by NETGEAR were distributed to its stockholders and NETGEAR is no longer considered a related party. Allocation of Corporate Expenses Prior to the completion of the IPO, NETGEAR provided certain corporate services to the Company, such as executive management, information technology, legal, finance and accounting, human resources, tax, treasury, research and development, sales and marketing, shared facilities and other shared services, as well as stock-based compensation expense attributable to Arlo’s employees and an allocation of stock-based compensation expense attributable to NETGEAR’s employees. These costs were allocated based on revenue, headcount, or other measures the Company has determined as reasonable through July 1, 2018. Following July 1, 2018, the Company assumed responsibility for the costs of these functions. The amount of these allocations from NETGEAR reflected within operating expenses in the consolidated statements of operations was $30.6 million from January 1, 2018 to the date of the completion of the Company’s IPO, which included $9.4 million for research and development, $10.0 million for sales and marketing, and $11.2 million for general and administrative expense. For the year ended December 31, 2017, allocations amounted to $40.0 million , which included $11.8 million for research and development, $13.1 million for sales and marketing, and $15.1 million for general and administrative expense. Related Party Arrangements Prior to the completion of the IPO, the Company entered into agreements with NETGEAR that govern Arlo’s separation from NETGEAR and various interim arrangements. These agreements have been in effect since the completion of the IPO and the Separation, and provide for, among other things, the transfer from NETGEAR to Arlo of assets and the assumption by Arlo of liabilities comprising the business through a master separation agreement between the Company and NETGEAR (the “master separation agreement”). The Company also entered into certain other agreements that provide a framework for the relationship with NETGEAR after the Separation, including: • a transition services agreement with NETGEAR, governing NETGEAR’s provision of various services to the Company, and the Company’s provision of various services to NETGEAR, on a transitional basis (the “transition services agreement”). During the year ended December 31, 2018 , $6.3 million NETGEAR TSA related costs were incurred, which included $0.4 million for research and development, $1.6 million for sales and marketing, and $4.3 million for general and administrative expense. During the year ended December 31, 2019 , $0.7 million NETGEAR TSA related costs were incurred, which included $0.1 million for cost of revenue, $0.3 million for research and development, $0.1 million for sales and marketing, and $0.2 million for general and administrative expense; • a tax matters agreement with NETGEAR that governs the respective rights, responsibilities and obligations of NETGEAR and Arlo after the completion of the IPO with respect to tax matters (including responsibility for taxes attributable to the Company and its subsidiaries, entitlement to refunds, allocation of tax attributes, preparation of tax returns, control of tax contests and other matters) (the “tax matters agreement”); • an employee matters agreement with NETGEAR that addresses employment, compensation and benefits matters, including the allocation and treatment of assets and liabilities relating to employees and compensation and benefit plans and programs in which the Company’s employees participate prior to the distribution, as well as other human resources, employment and employee benefit matters (the “employee matters agreement”); • an intellectual property rights cross-license agreement with NETGEAR, which governs the Company’s and NETGEAR’s rights, responsibilities and obligations to use NETGEAR and Arlo intellectual property, respectively (the “intellectual property rights cross-license agreement”); and • a registration rights agreement with NETGEAR, pursuant to which the Company granted NETGEAR and its affiliates certain registration rights with respect to Arlo’s common stock owned by them (the “registration rights agreement”).

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Event

Quarterly Unaudited Financial D

Quarterly Unaudited Financial Data (Notes)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Unaudited Financial Data	QUARTERLY UNAUDITED FINANCIAL DATA The following table presents unaudited quarterly financial information for the years ended December 31, 2019 and 2018 . The fourth quarter of 2018 was the first full quarter post separation and represents the Company’s actual results as an independent public company. Results for the first two quarters of 2018 include allocations from NETGEAR and may not be indicative of the Company’s results had it been a standalone entity during the period. December 31, 2019 (3) September 29, June 30, March 31, (In thousands, except per share amounts) Revenue $ 122,413 $ 106,116 $ 83,598 $ 57,880 Gross profit $ 13,706 $ 10,503 $ 9,650 $ 1,945 Provision for (benefit from) income taxes $ 3,525 $ 286 $ 349 $ 220 Net income (loss) $ 19,615 $ (30,590 ) $ (33,692 ) $ (41,284 ) Net income (loss) per share—basic (1) $ 0.26 $ (0.41 ) $ (0.45 ) $ (0.55 ) Net income (loss) per share—diluted $ 0.26 $ (0.41 ) $ (0.45 ) $ (0.55 ) December 31, September 30, July 1, April 1, (In thousands, except per share amounts) Revenue $ 122,158 $ 131,174 $ 110,948 $ 100,638 Gross profit $ 4,981 $ 29,747 $ 28,294 $ 29,053 Provision for income taxes $ (58 ) $ 223 $ 288 $ 319 Net loss $ (39,073 ) $ (13,225 ) $ (17,822 ) $ (5,363 ) Net loss per share—basic (1) $ (0.53 ) $ (0.19 ) $ (0.29 ) $ (0.09 ) Net loss per share—diluted (2) $ (0.53 ) $ (0.19 ) $ (0.29 ) $ (0.09 ) _________________________ (1) Net loss per share basic and diluted are computed independently for each quarters presented based on the weighted-average basic and fully diluted shares outstanding for each quarters. As a result, the sum of quarterly Net loss per share basic and diluted information may not equal annual Net loss per share basic and diluted. (2) On December 31, 2018, 6.8 million of stock options and RSUs were added to the Company’s equity awards as issued and outstanding resulting from the adjustment of NETGEAR’s equity awards that were granted to both NETGEAR and Arlo employees and non-employee directors, a portion of which were converted as Arlo awards. The dilutive effect of these converted stock options and RSUs is reflected above per share by application of the treasury stock method and none are potentially dilutive. (3) The Company disposed its commercial operations in Europe in the fourth quarter of 2019. Refer to Note 4 , Disposal of business , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for a complete discussion of the disposal.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Cash and cash equivalents and restricted cash	Cash and cash equivalents The Company considers all highly liquid investments with an original maturity or a remaining maturity at the time of purchase of three months or less to be cash equivalents. The Company deposits cash and cash equivalents with high credit quality financial institutions. Restricted cash The Company maintains certain cash balances restricted as to withdrawal or use. Restricted cash is comprised primarily of cash used as a collateral for a letter of credit associated with the Company’s lease agreement for its headquarters in San Jose, California. The Company deposits restricted cash with high credit quality financial institutions.
Short-term investments	Short-term investments Short-term investments are comprised of marketable securities that consist of government securities with an original maturity or a remaining maturity at the time of purchase of greater than three months and no more than 12 months. The marketable securities are held in the Company’s name with a high quality financial institution, which acts as the Company’s custodian and investment manager. These marketable securities are classified as available-for-sale securities in accordance with the provisions of the authoritative guidance for investments and are carried at fair value with unrealized gains and losses reported as a separate component of stockholders’ equity.
Fair value measurement	Fair value measurements The carrying amounts of the Company’s financial instruments, including cash equivalents, restricted cash, short-term investments, accounts receivable, and accounts payable approximate their fair values due to their short maturities. Foreign currency forward contracts are recorded at fair value based on observable market data. The Company determines the fair values of its financial instruments based on a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The classification of a financial asset or liability within the hierarchy is based upon the lowest level input that is significant to the fair value measurement. The fair value hierarchy prioritizes the inputs into three levels that may be used to measure fair value: Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; and Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).
Financial instruments	Derivative financial instruments The Company’s subsidiaries have had, and will continue to have material future cash flows, including revenue and expenses, which are denominated in currencies other than the Company’s functional currency. The Company and all its subsidiaries designate the U.S. dollar as the functional currency. Changes in exchange rates between the Company’s functional currency and other currencies in which the Company transacts business will cause fluctuations in cash flow expectations and cash flow realized or settled. Accordingly, the Company uses derivatives to mitigate its business exposure to foreign exchange risk. The Company enters into foreign currency forward contracts in Australian dollars, British pounds, euros, and Canadian dollars to manage its exposure to foreign exchange risk related to expected future cash flows on certain forecasted revenue, costs of revenue, operating expenses and existing assets and liabilities. The Company’s foreign currency forward contracts do not contain any credit risk-related contingent features. The Company is exposed to credit losses in the event of nonperformance by the counter-parties of its forward contracts. The Company enters into derivative contracts with high-quality financial institutions and limits the amount of credit exposure to any one counter-party. In addition, the derivative contracts typically mature in less than six months and the Company continuously evaluates the credit standing of its counter-party financial institutions. The counter-parties to these arrangements are large highly rated financial institutions and the Company does not consider non-performance a material risk. The Company may choose not to hedge certain foreign exchange exposures for a variety of reasons, including, but not limited to, materiality, accounting considerations or the prohibitive economic cost of hedging particular exposures. There can be no assurance the hedges will offset more than a portion of the financial impact resulting from movements in foreign exchange rates. The Company’s accounting policies for these instruments are based on whether the instruments are designated as hedge or non-hedge instruments in accordance with the authoritative guidance for derivatives and hedging. The Company records all derivatives on the balance sheets at fair value. Cash flow hedge gains and losses are recorded in other comprehensive income (“OCI”) until the hedged item is recognized in earnings. Derivatives that are not designated as hedging instruments are adjusted to fair value through earnings in Other income (expense), net in the consolidated statements of operations . Cash flow hedges To help manage the exposure of operating margins to fluctuations in foreign currency exchange rates, the Company hedges a portion of its anticipated foreign currency revenue, costs of revenue and certain operating expenses. These hedges are designated at the inception of the hedge relationship as cash flow hedges. The effective portion of the gain or loss on the derivative instrument is reported as a component of accumulated other comprehensive income (loss) (“AOCI”) in stockholders’ equity and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The ineffective portion of the gain or loss on the derivative instrument is recognized in current earnings. Derivative instruments designated as cash flow hedges must be de-designated as hedges when it is probable the forecasted hedged transaction will not occur within the designated hedge period or if not recognized within 60 days following the end of the hedge period. Deferred gains and losses in AOCI with such derivative instruments are reclassified immediately into earnings through Other income (expense), net. Any subsequent changes in fair value of such derivative instruments also are reflected in current earnings unless they are re-designated as hedges of other transactions. Non-designated hedges The Company enters into non-designated hedges under the authoritative guidance for derivatives and hedging to manage the exposure of non-functional currency monetary assets and liabilities held on its financial statements to fluctuations in foreign currency exchange rates, as well as to reduce volatility in other income and expense. The non-designated hedges are generally expected to offset the changes in value of its net non-functional currency asset and liability position resulting from foreign exchange rate fluctuations. Foreign currency denominated accounts receivable and payable are hedged with non-designated hedges when the related anticipated foreign revenue and expenses are recognized in the Company’s financial statements.
Concentration of credit risk	Concentration of credit risk Financial instruments that potentially subject the Company to a concentration of credit risk consist of principally investments, derivative financial instruments, and accounts receivable. The Company believes that there is minimal credit risk associated with the investment of its cash and cash equivalents, restricted cash, and short-term investments, due to the restrictions placed on the type of investment that can be entered into under the Company’s investment policy. The Company’s short-term investments consist of investment-grade securities, and the Company’s cash and investments are held and managed by high credit quality financial institutions. The Company is exposed to credit loss in the event of nonperformance by counterparties to the foreign currency forward contracts used to mitigate the effect of foreign currency exchange rate changes. The Company enters into derivative contracts with high-quality financial institutions and limits the amount of credit exposure to any counterparty. The Company’s foreign currency forward contracts do not contain any credit-risk-related contingent features. In addition, the derivative contracts typically mature in less than six months and the Company continuously evaluates the credit standing of its counterparty financial institutions. The counterparties to these arrangements are large highly rated financial institutions and the Company does not consider non-performance a material risk. The Company believes the counterparties for its outstanding contracts are large, financially sound institutions and thus, the Company does not anticipate nonperformance by these counterparties.
Allowance for doubtful accounts	Allowance for doubtful accounts The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The allowance for doubtful accounts is reviewed periodically and adjusted if necessary based on the Company’s assessments of its customers’ ability to pay. If the financial condition of the Company’s customers should deteriorate or if actual defaults are higher than the Company’s historical experience, additional allowances may be required, which could have an adverse impact on operating expenses.
Inventories	Inventories Inventories consist of finished goods which are valued at the lower of cost or net realizable value, with cost being determined using the first-in, first-out method. The Company writes down its inventories based on estimated excess and obsolete amounts, determined primarily based on demand forecasts, but takes into account market conditions, product development plans, product life expectancy and other factors. At the point of loss recognition, a new, lower cost basis for that inventory is established, and subsequent changes in facts and circumstances do not result in the restoration or increase of the newly established cost basis. While management believes the estimates and assumptions underlying its current forecasts are reasonable, there is risk that additional charges may be necessary if current forecasts are greater than actual demand.
Property and equipment, net	Property and equipment, net Property and equipment are stated at historical cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows: Asset Category: Range of Useful Lives Computer equipment 2 years Furniture and fixtures 5 years Software 2-5 years Machinery and equipment 2-3 years Leasehold improvements Shorter of remaining lease term or 7 years
Goodwill	Goodwill Goodwill pertained to the acquisitions of Avaak, Inc. (“Avaak”) and Placemeter, Inc. (“Placemeter”). Goodwill represents the amount by which the purchase price exceeds estimated fair value of net assets of businesses acquired in a business combination. The Company performs an annual impairment assessment of goodwill at the reporting unit level on the first day of the fourth fiscal quarter. The analysis may include both qualitative and quantitative factors to assess the likelihood of an impairment. Should certain events or indicators of impairment occur between annual impairment tests, the Company will perform the impairment test as those events or indicators occur. Examples of such events or circumstances include a significant decline in the Company’s expected future cash flows, a sustained, significant decline in the Company’s stock price and market capitalization, a significant adverse change in the business climate and slower growth rates. Goodwill is tested for impairment at the reporting unit level by first performing a qualitative assessment to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of the reporting unit is less than its carrying amount. The qualitative assessment considers macroeconomic conditions, industry and market considerations, cost factors, overall company financial performance, events affecting the reporting units, and changes in the Company’s stock price. If the reporting unit does not pass the qualitative assessment, the Company estimates its fair value and compares the fair value with the carrying amount of its reporting unit, including goodwill. If the fair value is greater than the carrying amount of its reporting unit, no impairment is recorded. Goodwill is also tested for impairment by performing a quantitative assessment, which is used to identify both the existence of impairment and the amount of impairment loss. The quantitative assessment compares the fair value of a reporting unit with its carrying amount, including goodwill. If the fair value is less than the carrying amount, an impairment loss shall be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. The impairment charge, if any would be recorded to earnings in the consolidated statements of operations.
Intangibles, net	Intangibles, net Intangibles, net pertained to the acquisitions of Avaak and Placemeter. Purchased intangibles with finite lives are amortized using the straight-line method over the estimated economic useful life, which range from three to five years . Finite-lived intangibles are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Examples of such events or circumstances include: a significant decrease in the market price of the asset, a significant decline in the Company’s expected future cash flows, significant changes or planned changes in its use of the assets, and a significant adverse change in the business climate. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition. If the carrying amount of the asset exceeds its estimated undiscounted future net cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. The carrying amount of the asset is reviewed on a regular basis for the existence of facts, both internal and external, that may suggest impairment.
Revenue recognition	Revenue recognition On January 1, 2018, the Company adopted ASU 2014-09, “Revenue from Contracts with Customers” (Topic 606) (“ASC 606”) and applied this guidance to those contracts which were not completed at the date of adoption using the modified retrospective method. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods (“ASC 605”). The Company recognized the cumulative effect of initially applying ASC 606 as an adjustment to Net parent investment effective January 1, 2018. Revenue from contracts with customers is recognized when control of the promised goods or services is transferred to the customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The majority of revenue comes from sales of hardware products to customers (retailers, distributors, and service providers). Revenue is recognized at a point in time when control of the goods is transferred to the customer, generally occurring upon shipment or delivery, dependent upon the terms of the underlying contract. The amount recognized reflects the consideration the Company expects to be entitled to in exchange for the transferred goods. The Company sells paid subscription services to its end user customers where it provides customers access to its cloud services. Revenue for subscription sales is generally recognized on a ratable basis over the contract term, beginning on the date that the service is made available to the customers at the time of registration. The subscription contracts are generally 30 days or 12 months in length, billed in advance. All such service or support sales are typically recognized using an output measure of progress by looking at the time elapsed, as the contracts generally provide the customer equal benefit throughout the contract period. In addition to selling paid subscriptions, the Company also sells services bundled with hardware products and accounts for these sales in line with the multiple performance obligations guidance. Revenue from all sales types is recognized at transaction price, which is the amount the Company expects to be entitled to in exchange for transferring goods or providing services. Transaction price is calculated as selling price net of variable consideration which may include estimates for future returns, sales incentives, and price protection related to current period product revenue. The Company’s standard obligation to its direct customers generally provides for a full refund in the event that such product is not merchantable or is found to be damaged or defective. In determining estimates for future returns, management analyzes historical sales and returns data, channel inventory levels, current economic trends, and changes in customer demand for the Company’s products. Sales incentives and price protection are determined based on a combination of the actual amounts committed and estimated future expenditure based upon historical customary business practice. Typically variable consideration does not need to be constrained as estimates are based on predictive historical data or future commitments that are planned and controlled by the Company. However, the Company continues to assess variable consideration estimates such that it is probable that a significant reversal of revenue will not occur. Contracts with multiple performance obligations Some of the Company’s contracts with customers contain multiple promised goods or services. Such contracts include hardware products with bundled services, various subscription services, and support. For these contracts, the Company accounts for the promises separately as individual performance obligations if they are distinct. Performance obligations are determined to be considered distinct if they are both capable of being distinct and distinct within the context of the contract. In determining whether performance obligations meet the criteria for being distinct, the Company considers a number of factors, such as the degree of interrelation and interdependence between obligations, and whether or not the good or service significantly modifies or transforms another good or service in the contract. The embedded software in most of the hardware products is not considered distinct and therefore the combined hardware and incidental software are treated as one performance obligation and recognized at the point in time when control of product transfers to the customer. Services that are included with certain hardware products are considered distinct and therefore the hardware and service are treated as separate performance obligations. After identifying the separate performance obligations, the transaction price is allocated to the separate performance obligations on a relative stand-alone selling price basis. Stand-alone selling prices are generally determined based on the prices charged to customers or using an adjusted market assessment. Stand-alone selling price of the hardware is directly observable from add-on camera and base station sales. Stand-alone selling price of the premium services are directly observable from direct sales to end users while the service is estimated using an adjusted market approach. Revenue is then recognized for each distinct performance obligation as control is transferred to the customer. Revenue attributable to hardware is recognized at the time control of the product transfers to the customer. The transaction price allocated to the service is recognized over the specified service period or over the estimated useful life of the hardware, beginning when the customer is expected to activate their account. Useful life of the hardware is determined by industry norms, technical and financial relevance, frequency of new model releases, and user history. Long-term Supply Arrangement - Verisure The Company has entered into a Supply Agreement as part of the disposal of the Company's commercial operations in Europe as discussed in Note 4 , where Verisure prepays future product purchases with a minimum product purchase commitment also required. The Supply Agreement includes product purchases, paid subscription services, basic services, and an option for Verisure to acquire development services by submitting a statement of work (“SOW”). Products sold come with a standard twelve month warranty. Verisure assumes responsibilities for all warranty claims, returns on products and certain technical support to the end users. The Company provides technical support for paid subscription services where Verisure can not resolve the issue. Verisure is responsible for any marketing and promotion of the Company's products and services sold in Europe. Products are priced at a cost plus markup based on markups specified in the Supply Agreement and that price varies based on the cost of the product. The paid subscription services and basic services pricing is based on the number of users monthly and is priced at a cost plus markup specified in the Supply Agreement that varies based on the user and service type. T he transaction price for products and paid subscription services is entirely variable because the consideration is dependent on the actual costs. The Company allocates variable consideration specified for products entirely to products, and variable consideration specified for the paid subscription services entirely to the paid subscription services. For development services, no contract exists until an SOW is submitted and approved by both parties. For products, since quantity and product types are not specified in the agreement, contracts are not deemed to exist until the Company receives and accepts the customer purchase order (PO). Each product with a valid PO is considered a single performance obligation. The Company recognizes variable consideration for products upon delivery and for services when the monthly service is rendered for paid subscription services and basic services. The non-refundable prepayment does not relate to future goods or services, as such no further assessment of material rights is required. Further, as the transfer of products is at the discretion of the customer (i.e. when Verisure issues a PO), a significant financing component does not exist as it relates to the prepayment. The Company also expects that prepayments will be fully utilized by Verisure with one year, hence, no additional accounting consideration is necessary for breakage. The Company also concluded that it is acting as the principal in the Supply Agreement and determined that revenue should be presented gross. Non-recurring Engineering ("NRE") Arrangement - Verisure The Supply Agreement also provides for certain development services under an SOW to Verisure ("NRE arrangement") as part of the disposal of the Company's commercial operations in Europe as discussed in Note 4 . In the NRE arrangement, Verisure pays non-refundable installments upon the commencement of agreed-upon milestones. There is a single performance obligation as the distinct goods and services promised under the SOW are highly interdependent or interrelated inputs that produce a single combined output given the nature of such arrangements. The output (or work-in-progress of such output) typically has no alternative use to the Company given the customized nature of the arrangement and the Company has enforceable rights given that the non-refundable milestone payments are prepayments in nature; control for NRE development services therefore transfers over time. The Company determined that the most appropriate measure of progress for revenue recognition is the input method based on cost because the Company can reasonably estimate the total costs for the NRE, and the costs incurred reasonably reflects the Company’s efforts to satisfy the performance obligation. The NRE costs include labor, material, overhead as well as the use of outside services. The total estimated NRE costs are based on a combination of historical costs together with quotes from vendors for supplying parts or services towards the completion. Adjustments to cost and profit estimates are made periodically due to changes in scope of work, hours to complete and estimated profitability, including those arising from final contract settlements. These changes may result in revisions to costs and income and are recognized in the period in which the revisions are determined. Any losses expected to be incurred on contracts in progress are charged to operations in the period such losses are determined. If total NRE costs calculated upon completion in the current period are more than the estimated total costs at completion used to calculate revenue in a prior period, then the profits in the current period will be lower than if the estimated costs used in the prior period calculation were equal to the actual total costs upon completion. Warranties Sales of hardware products regularly include warranties to end customers that cover bug fixes, minor updates such that the product continues to function according to published specifications in a dynamic environment, and phone support. These standard warranties are assurance type warranties and do not offer any services in addition to the assurance that the product will continue working as specified for one or more years. Therefore, warranties are not considered separate performance obligations in the arrangement. Instead, the expected cost of warranties is accrued as an expense in accordance with authoritative guidance. Sales incentives The Company accrues for sales incentives as a marketing expense if it receives an identifiable benefit in exchange and can reasonably estimate the fair value of the identifiable benefit received; otherwise, it is recorded as a reduction to revenues. As a consequence, the Company records a substantial portion of its channel marketing costs as a reduction of revenue. The Company records estimated reductions to revenue for sales incentives when the related revenue is recognized or ahead of customer or end customer commitment if customary business practice creates an implied expectation that such activities will occur in the future. Shipping and handling costs The Company includes shipping and handling fees billed to customers in Revenue. Shipping and handling costs associated with inbound freight are included in Cost of revenue. In cases where the Company gives a freight allowance to the customer for their own inbound freight costs, such costs are appropriately recorded as a reduction in Revenue. Shipping and handling costs associated with outbound freight are included in Sales and marketing expenses. The Company has elected to account for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Shipping and handling costs associated with outbound freight totaled $2.3 million , $3.7 million and $2.8 million for the years ended December 31, 2019 , 2018 and 2017 , respectively. Contract costs The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that otherwise would have been recognized is one year or less. These costs are included in sales and marketing and general and administrative expenses. If the incremental costs of obtaining a contract, which consist of sales commissions, relate to a service recognized over a period longer than one year, costs are deferred and amortized in line with the related services over the period of benefit. Deferred commissions are classified as non-current based on the original amortization period of over one year. There were no deferred commissions as of December 31, 2019 and 2018 . Contract balances
Research and development	Research and development Costs incurred in the research and development of new products are expensed as incurred.
Advertising costs	Advertising costs
Stock-based compensation	Stock-based compensation The Company’s employees have historically participated in NETGEAR’s stock-based compensation plans. Stock-based compensation expense has been allocated to the Company based on the awards and terms previously granted to the Company’s employees as well as an allocation of NETGEAR’s corporate and shared functional employee expenses. The Company measures stock-based compensation at the grant date based on the fair value of the award. The fair value of stock options and the shares offered under the employee stock purchase plan is estimated using the Black-Scholes option pricing model. Estimated compensation cost relating to restricted stock units ("RSUs") is based on the closing fair market value of NETGEAR’s common stock on the date of grant. Equity awards granted by the Company under its own stock-based compensation plans on or after the completion of the IPO are comprised of performance-based stock options (the “PSOs”), stock options, and RSUs. The Company uses the fair value method of accounting for its equity awards granted to employees and measures the cost of employee services received in exchange for the stock-based awards. The Company recognizes this compensation expense generally on a straight-line basis over the requisite service period of the award. The fair value of stock options and PSOs is estimated on the grant or offering date using the Black-Scholes option pricing model and the forfeitures are recorded as they occur. The fair value of RSUs is measured on the grant date based on the closing fair market value of the Company’s common stock. The stock-based compensation cost is recognized ratably over the period during which an employee is required to provide service in exchange for the awards, usually the vesting period, which is generally four years for stock options and three to four years for RSUs. For PSOs, stock-based compensation expense of individual performance milestone is recognized over the expected performance achievement period when the achievement becomes probable. The Company's 2018 Employee Stock Purchase Plan (“ESPP”) is intended to provide employees with the opportunity to purchase the Company's common stock through accumulated payroll deductions at the end of specified purchase period. Eligible employees may contribute up to 15% of compensation, subject to certain income limits, to purchase shares of the Company's common stock. The terms of the plan include a look-back feature that enables employees to purchase stock semi-annually at a price equal to 85% of the lesser of the fair market value at the beginning of the offering period or the purchase date. The duration of each purchasing period is generally six months . The Company determines the fair value using the Black-Scholes Model using various inputs, including our estimate of expected volatility, term, dividend yield and risk-free interest rate. The Company recognizes compensation costs for the ESPP on a straight-line basis over the requisite service period of the award. The Company issued equity awards consisting of 50% of time-based vesting RSUs, 25% of performance-based RSUs (“PSUs”) and 25% of market-based performance RSUs (“MPSUs”) to its named executive officers (“NEOs”) during the fiscal quarter ended September 29, 2019: • The time-based vesting RSUs will vest in three equal annual installments during the period that begins on the RSU grant date. • The PSUs will vest in three equal annual installments during the period that begins on the PSU grant date based on the extent to which a revenue milestone for the fiscal year ending December 31, 2019 is achieved. • The MPSUs will vest on the three-year anniversary of the MPSU grant date based on the performance of the Company's common stock relative to the Russell 2000 Index (“the Benchmark”) during the three-year period from grant date. A positive 3.3 x or negative 2.5 x multiplier will be applied to the total shareholder returns (“TSR”), such that the number of shares vested will increase by 3.3% or decrease by 2.5% of the target numbers, for each 1% of positive or negative relative TSR relative to the Benchmark. In the event the Company's common stock performance is below negative 30% relative to the Benchmark, no shares will vest. In no event will the number of shares vested in each tranche exceed 200% of the target for that tranche. The estimated compensation cost relating to the PSUs, is based on the closing fair market value of the Company's stock on the date of grant. The maximum number of shares that NEOs can earn is 150% of the target number of the PSUs. The minimum number of shares that NEOs can earn is 50% of the target number of the PSUs. To estimate the compensation cost relating to the MPSUs, the Company utilized a Monte Carlo simulation model on the date of grant. The fair value determined using the Monte Carlo simulation model varies based on the assumptions used for the expected stock price volatility, the correlation coefficient between the Company and Russell 2000 Index, risk-free interest rates, and dividend yield. On the Distribution Date, outstanding equity awards granted to Arlo employees under NETGEAR’s stock-based compensation plans were adjusted into NETGEAR awards and Arlo awards based on the conversion ratio as set forth in the employee matters agreement between Arlo and NETGEAR. The Company did not recognize any incremental expense in connection with the conversion of NETGEAR’s Stock based awards into Arlo awards. Refer to Note 13 , Employee Benefit Plans , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for a further discussion on stock-based compensation.
Leases	Leases Effective January 1, 2019, the Company adopted Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842) utilizing the modified retrospective transition method through a cumulative-effect adjustment at the beginning of the first fiscal quarter of 2019. For additional information on the changes resulting from the new standard and the impact to our financial results on adoption, refer to the section Recently Adopted Accounting Pronouncements below. The Company determines if an arrangement is a lease at inception. Under the new standard, operating leases are included in operating lease right-of-use (“ROU”) assets, accrued liabilities, and non-current operating lease liabilities in the consolidated balance sheets. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Fixed lease expense for lease payments are recognized in the consolidated statements of operations on a straight-line basis over the lease term and variable lease payments in the period in which the obligation for those payments is incurred. ROU assets represent the Company’s right to use an underlying asset over the lease term and lease liabilities represent its obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of the leases do not provide an implicit rate, the incremental borrowing rate based on the information available was used at commencement date in determining the present value of lease payments. The Company uses the implicit rate when readily determinable. The operating lease ROU asset also includes any lease payments made before the lease commencement date less any lease incentives received. The lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise the options. The lease agreements with lease and non-lease components are generally accounted as a single component.
Net income (loss) per share	Net income (loss) per share Basic net income (loss) per share is computed by dividing the net income (loss) for the period by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share is computed by dividing the net income (loss) for the period by the weighted average number of shares of common stock and potentially dilutive common stock outstanding during the period. Potentially dilutive common shares include common shares issuable upon exercise of stock options and vesting of restricted stock awards, which are reflected in diluted net income (loss) per share by application of the treasury stock method. Potentially dilutive common shares are excluded from the computation of diluted net income (loss) per share when their effect is anti-dilutive.
Segment Information	Segment Information The Company operates as one operating and reportable segment. The Company has identified its CEO as the Chief Operating Decision Maker (“CODM”). The CODM reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance.
Comprehensive income (loss)	Comprehensive income (loss) Comprehensive income consists of net income (loss) and other gains and losses affecting stockholders’ equity that the Company excluded from net income (loss), including unrealized gains and losses related to fair value of short-term investments and the effective portion of cash flow hedges that were outstanding at the end of the year.
Foreign currency translation and re-measurement	Foreign currency translation and re-measurement The Company’s functional currency is the U.S. dollar. Foreign currency transactions of international subsidiaries are re-measured into U.S. dollars at the end-of-period exchange rates for monetary assets and liabilities, and at historical exchange rates for non-monetary assets and liabilities. Revenue is re-measured at average exchange rates in effect during each period. Expenses are re-measured at average exchange rates in effect during each period, except for expenses related to non-monetary assets and liabilities, which are re-measured at historical exchange rates. Gains and losses arising from foreign currency transactions are included in Other income (expense), net on the consolidated statements of operations.
Income taxes	Income taxes
Certain risks and uncertainties	Certain risks and uncertainties The Company’s products are concentrated in the connected lifestyle solution industries, which are characterized by rapid technological advances, changes in customer requirements and evolving regulatory requirements and industry standards. The success of the Company depends on management’s ability to anticipate and/or to respond quickly and adequately to such changes. Any significant delays in the development or introduction of products and services could materially adversely affect the Company’s business, results of operations and financial condition. The Company relies on a limited number of third parties to manufacture all of its products. If any of the Company’s third-party manufacturers cannot or will not manufacture its products in required volumes, on a cost-effective basis, in a timely manner or at all, the Company will have to secure additional manufacturing capacity. Any interruption or delay in manufacturing could materially adversely affect the Company’s business, results of operations and financial condition.
Recent accounting pronouncements	Recent accounting pronouncements Emerging Growth Company Status As an emerging growth company (“EGC”), the Jumpstart Our Business Startups Act (“JOBS Act”) allows the Company to delay adoption of new or revised accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies, unless the Company otherwise irrevocably elects not to avail itself of this exemption. The Company did not make such an irrevocable election and has not delayed the adoption of any applicable accounting standards. Accounting Pronouncements Recently Adopted ASU 2016-02 - Leases In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02, “Leases” (Topic 842), which requires lessees to recognize on the balance sheets a ROU asset, representing its right to use the underlying asset for the lease term, and a corresponding lease liability for all leases with terms greater than 12 months. The liability is equal to the net present value of minimum lease payments while the ROU asset is based on the liability, subject to adjustment, such as for initial direct costs. On January 1, 2019 (“adoption date”), the Company adopted the new standard utilizing the modified retrospective transition method through a cumulative-effect adjustment at the beginning of the first fiscal quarter of 2019. The Company has elected the package of practical expedients, which allows the Company not to reassess (1) whether an expired or existing contract as of adoption date contains a lease, (2) lease classification for any expired or existing lease as of the adoption date and (3) initial direct costs for any existing lease as of the adoption date. The Company also elected to account for each separate lease component of a contract and its associated non-lease components as a single lease component. The adoption of ASU 2016-02 resulted in the recognition of ROU assets and lease liabilities for operating leases of $14.4 million as of January 1, 2019 on its consolidated balance sheets, with no material impact on its consolidated statements of operations and cash flows. In addition, the Company was deemed to be the accounting owner of its build-to-suit lease arrangement for its San Jose corporate headquarters and the construction was in progress at adoption date. As such, the Company reevaluated its build-to-suit lease arrangement under ASU 2016-02 to ascertain whether it meets the criteria as the accounting owner of the build-to-suit lease arrangement through control of the underlying leased asset. The Company concluded that it did not have control over the underlying leased asset. As a result, the Company de-recognized the build-to-suit asset and liability as of adoption date of $21.6 million of property and equipment and $21.9 million of financing lease obligations. The difference of $0.3 million between the de-recognized assets and the associated financing lease obligations was recorded as an adjustment to accumulated deficit as of adoption date as mentioned above. The Company accounted for its San Jose Corporate lease arrangement as operating lease under ASU 2016-02. Consequently, as of March 31, 2019, the construction of its leasehold improvements for its San Jose corporate headquarters was partially completed and partially occupied by the Company resulting in lease commencement for the portion that was completed and occupied by the Company. Therefore, the Company proportionally recorded ROU assets and lease liabilities of $14.3 million , representing two thirds of the total value of the ROU assets and lease liabilities. As of June 30, 2019, upon the completion of the leasehold improvements and full occupation of the entire building, the Company recognized the remaining value of ROU assets and lease liabilities of $7.2 million . Refer to Note 11 . Commitments and Contingencies , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for further details of the impacts on the adoption. Accounting Pronouncements Not Yet Effective ASU 2016-13 - Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments” (Topic 326), which replaces the incurred-loss impairment methodology and requires immediate recognition of estimated credit losses expected to occur for most financial assets, including trade receivables. Credit losses on available-for-sale debt securities with unrealized losses will be recognized as allowances for credit losses limited to the amount by which fair value is below amortized cost. ASU 2016-13 is effective for the Company beginning in the first fiscal quarter of 2023 (or the first fiscal quarter of 2020 should the Company cease to be classified as an EGC), with early adoption permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-13 on its financial statements. ASU 2019-12 - Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes In December 2019, the FASB issued ASU No. 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" ("ASU 2019-12"), which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. ASU 2019-12 is effective for the Company beginning January 1, 2022 (or January 1, 2021 should the Company cease to be classified as an EGC), with early adoption permitted. The Company is currently evaluating the impact of the adoption of ASU 2019-12 on its financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents and Restricted Cash	The following table shows reconciliation of cash and cash equivalents and restricted cash within the consolidated balance sheets to the amounts shown in the statements of cash flows: As of December 31, 2019 2018 2017 (In thousands) Cash and cash equivalents $ 236,680 $ 151,290 $ 108 Restricted cash 4,139 4,134 — Total as presented on the consolidated statements of cash flows $ 240,819 $ 155,424 $ 108
Summary of Property, Plant and Equipment Range of Useful Lives	Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows: Asset Category: Range of Useful Lives Computer equipment 2 years Furniture and fixtures 5 years Software 2-5 years Machinery and equipment 2-3 years Leasehold improvements Shorter of remaining lease term or 7 years

Deferred Revenue (Tables)

Deferred Revenue (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Schedule of Remaining Performance Obligations	The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of December 31, 2019 : 1 year 2 years Greater than 2 years Total (In thousands) Performance obligations $ 58,441 $ 12,108 $ 3,915 $ 74,464
Schedule of Changes in Contract Balances	The following table reflects the changes in contract balances for the year ended December 31, 2019 and 2018 : 2019 2019 Balance Sheet Location December 31, 2019 December 31, 2018 January 1, 2018 $ change % change (In thousands) Accounts receivable, net Accounts receivable, net $ 127,317 $ 166,045 $ 158,507 $ (38,728 ) (23.3 )% Contract liabilities - current Deferred revenue $ 50,362 $ 26,678 $ 24,746 $ 23,684 88.8 % Contract liabilities - non-current Non-current deferred revenue $ 15,736 $ 23,313 $ 13,091 $ (7,577 ) (32.5 )%

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Available-for-sale short-term investments	As of December 31, 2019 As of December 31, 2018 Cost Unrealized Gains Unrealized Losses Estimated Fair Value Cost Unrealized Gains Unrealized Losses Estimated Fair Value (In thousands) U.S. treasuries $ 19,967 $ 23 $ — $ 19,990 $ 49,739 $ 2 $ (4 ) $ 49,737
Schedule of Accounts Receivable, Net	Accounts receivable, net As of December 31, 2019 2018 (In thousands) Gross accounts receivable $ 127,926 $ 166,172 Allowance for doubtful accounts (609 ) (127 ) Total accounts receivable, net $ 127,317 $ 166,045 Allowance for doubtful accounts Year Ended December 31, 2019 2018 2017 (In thousands) Balance at the beginning of the period $ 127 $ 207 $ 206 Additions 482 — 1 Deductions — (80 ) — Balance at the end of the period $ 609 $ 127 $ 207
Schedule of Property and Equipment, Net	As of December 31, 2019 2018 (In thousands) Machinery and equipment $ 13,402 $ 11,415 Software 11,945 10,624 Computer equipment 4,047 4,342 Leasehold improvements 8,087 3,007 Furniture and fixtures 4,075 2,698 Construction in progress (1) — 28,357 Total property and equipment, gross 41,556 60,443 Accumulated depreciation (20,204 ) (11,015 ) Total property and equipment, net $ 21,352 $ 49,428 _________________________ (1) The Company had a build-to-suit lease arrangement under its corporate headquarters lease in San Jose, California. Upon the adoption of ASU 2016-02, the Company concluded that it did not have control over the underlying leased asset and de-recognized $21.6 million of construction in progress. Refer to Note 11 , Commitments and Contingencies , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for further details.
Schedule of Intangibles, Net	Intangibles, net As of December 31, 2019 As of December 31, 2018 Gross Accumulated Amortization Net Gross Accumulated Amortization Net (In thousands) Technology $ 9,800 $ (8,540 ) $ 1,260 $ 9,800 $ (7,165 ) $ 2,635 Other 500 (454 ) 46 800 (612 ) 188 Total intangibles, net $ 10,300 $ (8,994 ) $ 1,306 $ 10,600 $ (7,777 ) $ 2,823
Schedule of Goodwill	As of December 31, 2019 2018 (In thousands) Goodwill $ 11,038 $ 15,638
Schedule of Other Non-Current Assets	Other non-current assets As of December 31, 2019 2018 (In thousands) Non-current deferred income taxes $ 1,318 $ 1,108 Deposits 764 4,084 Other 1,926 3,257 Total other non-current assets $ 4,008 $ 8,449
Schedule of Other Accrued Liabilities	Accrued liabilities As of December 31, 2019 2018 (In thousands) Sales and marketing $ 53,974 75,863 Sales returns 28,817 49,247 Warranty obligation 3,169 3,712 Accrued employee compensation 11,795 11,897 Operating lease liabilities 3,912 — Freight 2,690 3,913 Current financing lease obligation — 1,632 Other 23,043 25,772 Total accrued liabilities $ 127,400 $ 172,036

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables summarize assets and liabilities measured at fair value on a recurring basis as of December 31, 2019 and 2018 : As of December 31, 2019 Total Quoted market prices in active markets (Level 1) Significant other observable inputs (Level 2) (In thousands) Assets: Cash equivalents: money-market funds (<90 days) $ 31,472 $ 31,472 $ — Available-for-sale securities: U.S. treasuries (1) 19,990 19,990 — Foreign currency forward contracts (2) 27 — 27 Total assets measured at fair value $ 51,489 $ 51,462 $ 27 Liabilities: Foreign currency forward contracts (3) $ 375 $ — $ 375 Total liabilities measured at fair value $ 375 $ — $ 375 December 31, 2018 Total Quoted market prices in active markets (Level 1) Significant other observable inputs (Level 2) (In thousands) Assets: Cash equivalents: U.S. treasuries (<90 days) $ 438 $ 438 $ — Available-for-sale securities: U.S. treasuries (1) 49,737 49,737 — Foreign currency forward contracts (2) 322 — 322 Total assets measured at fair value $ 50,497 $ 50,175 $ 322 Liabilities: Foreign currency forward contracts (3) $ 71 $ — $ 71 Total liabilities measured at fair value $ 71 $ — $ 71 _________________________ (1) Included in Short-term investments on the Company’s consolidated balance sheets. (2) Included in Prepaid expenses and other current assets on the Company’s consolidated balance sheets. (3) Included in Accrued liabilities on the Company’s consolidated balance sheets .

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Values of the Company's Derivative Instruments and the Line Items on the Consolidated Balance Sheets	The fair values of the Company’s derivative instruments and the line items on the consolidated balance sheets to which they were recorded as of December 31, 2019 and 2018 are summarized as follows: December 31, December 31, Derivative Assets Balance Sheet Location 2019 2018 Balance Sheet Location 2019 2018 (In thousands) (In thousands) Derivative assets not designated as hedging instruments Prepaid expenses and other current assets $ 27 $ 293 Other accrued liabilities $ 347 $ 46 Derivative assets designated as hedging instruments Prepaid expenses and other current assets — 29 Other accrued liabilities 28 25 Total $ 27 $ 322 $ 375 $ 71
Schedule of Offsetting of Derivative Assets	As of December 31, 2018 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) HSBC $ 100 $ — $ 100 $ — $ — $ 100 Wells Fargo Bank 222 — 222 (68 ) — 154 Total $ 322 $ — $ 322 $ (68 ) $ — $ 254 The following tables set forth the offsetting of derivative assets and liabilities as of December 31, 2019 and 2018 : As of December 31, 2019 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) HSBC $ 6 $ — $ 6 $ (6 ) $ — $ — Wells Fargo Bank 21 — 21 (21 ) — — Total $ 27 $ — $ 27 $ (27 ) $ — $ —
Schedule of Offsetting of Derivative Liabilities	As of December 31, 2018 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) JP Morgan $ 3 $ — $ 3 $ — $ — $ 3 Wells Fargo Bank 68 — 68 (68 ) — — Total $ 71 $ — $ 71 $ (68 ) $ — $ 3 As of December 31, 2019 Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Of Liabilities Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount (In thousands) HSBC $ 83 $ — $ 83 $ (6 ) $ — $ 77 Wells Fargo Bank 292 — 292 (21 ) — 271 Total $ 375 $ — $ 375 $ (27 ) $ — $ 348
Schedule of Effects and Locations of Gains or Losses Recognized in Income	The effects of the Company’s cash flow hedges on the consolidated statements of operations for the years ended December 31, 2019 and 2018 are summarized as follows: Location and Amount of Gains (Losses) Recognized in Income on Cash Flow Hedges Year Ended December 31, 2019 Revenue Cost of revenue Research and development Sales and marketing General and administrative (In thousands) Statements of operations $ 370,007 $ 334,203 $ 69,384 $ 56,985 $ 47,624 Gains (losses) on cash flow hedge $ 390 $ (3 ) $ (28 ) $ (44 ) $ (13 ) Location and Amount of Gains (Losses) Recognized in Income on Cash Flow Hedges Year Ended December 31, 2018 Revenue Cost of revenue Research and development Sales and marketing General and administrative (In thousands) Statements of operations $ 464,918 $ 372,843 $ 58,794 $ 52,593 $ 28,209 Gains (losses) on cash flow hedge $ 315 $ — $ (2 ) $ (28 ) $ (11 )
Schedule of Derivatives not Designated as Hedging Instruments	The effects of the Company’s non-designated hedge included in Other income (expense), net on the consolidated statements of operations for the years ended December 31, 2019 and 2018 are as follows: December 31, Derivatives Not Designated as Hedging Instruments Location of Gains (Losses) Recognized in Income on Derivative 2019 2018 (In thousands) Foreign currency forward contracts Other income (expense), net $ (24 ) $ 589

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following table sets forth the changes in accumulated other comprehensive income (loss) (“AOCI”) by component for the years ended December 31, 2019 and 2018 : Unrealized gains (losses) on available-for-sale securities Unrealized gains (losses) on derivatives Estimated tax benefit (provision) Total (In thousands) Balance as of December 31, 2017 $ — $ — $ — $ — Other comprehensive income (loss) before reclassifications (2 ) 276 — 274 Less: Amount reclassified from accumulated other comprehensive income (loss) — 274 — 274 Net current period other comprehensive income (loss) (2 ) 2 — — Balance as of December 31, 2018 (2 ) 2 — — Other comprehensive income (loss) before reclassifications 25 275 — 300 Less: Amount reclassified from accumulated other comprehensive income (loss) — 302 — 302 Net current period other comprehensive income (loss) 25 (27 ) — (2 ) Balance as of December 31, 2019 $ 23 $ (25 ) $ — $ (2 )
Schedule of Reclassification out of Accumulated Other Comprehensive Income (Loss)	The following tables provide details about significant amounts reclassified out of each component of AOCI for the years ended December 31, 2019 and 2018 : Year Ended December 31, 2019 Year Ended December 31, 2018 Gains (Losses) Recognized in OCI - Effective Portion Gains (Losses) Reclassified from OCI to Income - Effective Portion Gains (Losses) Recognized in OCI - Effective Portion Gains (Losses) Reclassified from OCI to Income - Effective Portion Affected Line Item in the Statements of Operations (In thousands) Gains (losses) on cash flow hedge: Foreign currency contracts $ 275 $ 390 $ 276 $ 315 Revenue Foreign currency contracts — (3 ) — — Cost of revenue Foreign currency contracts — (28 ) — (2 ) Research and development Foreign currency contracts — (44 ) — (28 ) Sales and marketing Foreign currency contracts — (13 ) — (11 ) General and administrative $ 275 $ 302 $ 276 $ 274 Total * _________________________ * There is no tax impact on all hedging gains and losses from derivative contracts due to the Company’s full valuation allowance of its deferred tax assets.

Income Taxes Income Taxes (Tabl

Income Taxes Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax	Income (loss) before provision for income taxes consisted of the following: Year Ended December 31, 2019 2018 2017 (In thousands) United States $ (103,836 ) $ (79,581 ) $ 3,318 International 22,265 4,870 4,359 Total $ (81,571 ) $ (74,711 ) $ 7,677
Summary of Income Tax Expense (Benefit)	Provision for income taxes consisted of the following: Year Ended December 31, 2019 2018 2017 (In thousands) Current: U.S. Federal $ — $ — $ — State 58 16 260 Foreign 4,524 1,425 1,255 4,582 1,441 1,515 Deferred: U.S. Federal — — (66 ) State — — — Foreign (202 ) (669 ) (321 ) (202 ) (669 ) (387 ) Total $ 4,380 $ 772 $ 1,128
Schedule of Deferred Tax Assets and Liabilities	Net deferred tax assets consisted of the following: As of December 31, 2019 2018 (In thousands) Deferred Tax Assets: Accruals and allowances $ 11,334 $ 17,974 Net operating loss carryforwards 14,355 2,946 Stock-based compensation 3,228 1,927 Lease liabilities 8,212 — Deferred revenue 4,417 2,573 Tax credit carryforwards 3,262 — Depreciation and amortization 7,877 567 Deferred rent — 373 Total deferred tax assets 52,685 26,360 Deferred Tax Liabilities: Depreciation and amortization — (775 ) Lease assets (7,450 ) — Total deferred tax liabilities (7,450 ) (775 ) Valuation Allowance (43,917 ) (24,477 ) Net deferred tax assets $ 1,318 $ 1,108
Schedule of Valuation Allowance for Deferred Income Tax Assets	Changes in allowance for deferred tax assets were as follows: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at the beginning of the period $ 24,477 $ 15,611 $ 22,155 Additions 38,336 13,760 10,896 Deductions (18,896 ) (4,894 ) (17,440 ) Balance at the end of the period $ 43,917 $ 24,477 $ 15,611
Summary of Operating Loss Carryforwards	As of December 31, 2019, net operating loss carryforwards consisted of the following: Amount Beginning Year of Expiration (in thousands) U.S. Federal (1) $ 14,028 2031 U.S. Federal 47,059 Indefinite California 44,613 2039 Other State (tax effected, net of federal benefit) 836 2024 _________________________ (1) All of the losses are subject to annual usage limitations under Internal Revenue Code Section 382.
Summary of Tax Credit Carryforwards	As of December 31, 2019 , tax credit carryforwards consisted of the following: Amount Beginning Year of Expiration (in thousands) U.S. Federal $ 1,664 2039 California 1,395 Indefinite Foreign 814 2038
Schedule of Effective Income Tax Rate Reconciliation	The effective tax rate differs from the applicable U.S. statutory federal rate as follows: Year Ended December 31, 2019 2018 2017 Tax at federal statutory rate (1) 21.0 % 21.0 % 35.0 % State, net of federal benefit 3.0 % 5.9 % (8.7 )% Impact of international operations 1.4 % 0.4 % (6.2 )% U.S. Taxes on Foreign Entities (3.6 )% (1.8 )% — % Stock-based compensation (2.6 )% (0.1 )% (5.0 )% Tax credits 1.6 % 1.5 % (6.8 )% Change in valuation allowance (23.8 )% (25.2 )% (105.1 )% Impact of the Tax Act — % — % 115.6 % Non-deductible transaction costs (0.7 )% (2.6 )% — % Goodwill derecognition (1.2 )% — % — % Others (0.5 )% (0.1 )% (4.1 )% Provision for income taxes (5.4 )% (1.0 )% 14.7 % _________________________ (1) The Tax Act of 2017 reduced the U.S federal statutory tax rate from 35% to 21% beginning in 2018.
Reconciliation of Gross Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (“UTB”) is as follows: Federal, State, and Foreign Tax (In thousands) Balance as of December 31, 2016 $ 676 Additions based on tax positions related to the current year 361 Additions for tax positions of prior years 30 Reductions for tax positions of prior years (45 ) Balance as of December 31, 2017 1,022 Additions based on tax positions related to the current year 338 Adjustments to Net parent investments (1,338 ) Balance as of December 31, 2018 22 Additions based on tax positions related to the current year 674 Additions for tax positions of prior years 8 Balance as of December 31, 2019 $ 704

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Effect of Accounting Standard Adoption	The effect of accounting standards adoption of ASU 2016-02 on the consolidated statement of balance sheets and supplemental balance sheet information related to operating leases were as follows: Leases Balance Sheet Location December 31, 2019 January 1, 2019 December 31, 2018 (In thousands) Build-to-suit lease (1) Property and equipment, net $ — $ (21,610 ) $ 21,610 Build-to-suit lease (1) Accrued liabilities — (281 ) 281 Build-to-suit lease (1) Accrued liabilities — (1,632 ) 1,632 Build-to-suit lease (1) Non-current financing lease obligation — (19,978 ) 19,978 Build-to-suit lease (1) Retained earnings (Accumulated deficit) 281 281 — Operating leases (2) Operating lease right-of-use assets, net 31,300 14,400 — Operating leases (2) Accrued liabilities — (107 ) 107 Operating leases (2) Accrued liabilities 3,912 2,356 — Operating leases (2) Non-current deferred rent — (1,141 ) 1,141 Operating leases (2) Non-current operating lease liabilities 29,001 12,044 — ________________________ (1) The Company was deemed to be the accounting owner of its build-to-suit lease arrangement for its San Jose corporate headquarters and the construction was in progress at adoption date. As such, the Company reevaluated its build-to-suit lease arrangement under ASU 2016-02 to ascertain whether it meets the criteria as the accounting owner of the build-to-suit lease arrangement through control of the underlying leased asset. The Company concluded that it did not have control over the underlying leased asset. As a result, the Company de-recognized the build to suit asset and liability as of adoption date of $21.6 million of Property and equipment and $21.9 million of financing lease obligations. The difference of $0.3 million between the de-recognized assets and the associated financing lease obligations was recorded as an adjustment to Accumulated deficit as of the adoption date. (2) The Company adopted ASU 2016-02 on January 1, 2019 which resulted in the recognition of ROU assets and lease liabilities for operating leases of $14.4 million on its consolidated balance sheets. The ROU assets were reduced by $0.1 million current deferred rent and $1.1 million non-current deferred rent which were de-recognized along with the adoption. As of March 31, 2019, the construction of the Company’s leasehold improvements for its San Jose corporate headquarters was partially completed and partially occupied by the Company, resulting in lease commencement inception for the portion that was completed and occupied by the Company. Therefore, the Company proportionally recorded ROU assets and lease liabilities of $14.3 million , representing two thirds of the total value of the ROU assets and lease liabilities. As of June 30, 2019, upon the completion of the leasehold improvements and full occupation of the entire building, the Company recognized the remaining value of ROU assets and lease liabilities of $7.2 million . As of September 29, 2019, the Company received $3.1 million reimbursement for leasehold improvements that the Company de-recognized during the quarter.
Effect on Financial Statements	Supplemental cash flow information related to operating leases for the year ended December 31, 2019 was as follows: Year Ended December 31, 2019 (in thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 4,888 Right-of-use assets obtained in exchange for lease liabilities Operating leases $ 21,742 Other non-cash increases in operating right of use assets $ 788 Weighted average remaining lease term and weighted average discount rate related to operating leases as of December 31, 2019 were as follows: Weighted average remaining lease term 7.7 years Weighted average discount rate 5.67 %
Summary of Operating Lease Maturity	The maturity of lease liabilities related to operating leases for each of the next five years and thereafter as of December 31, 2019 was as follows (in thousands): 2020 $ 5,660 2021 5,735 2022 5,589 2023 4,908 2024 4,450 Thereafter 14,669 Total lease payments 41,011 Less: interest (1) (8,098 ) Total $ 32,913 Accrued liabilities $ 3,912 Non-current operating lease liabilities 29,001 Total $ 32,913 ________________________ (1) Calculated using the Company’s incremental borrowing rate on a collateralized basis plus LIBOR rate that closely matches contractual term of most leases on adoption date.
Schedule of Future Minimum Lease Payments	As of December 31, 2018 , maturity of lease liabilities related to operating leases for each of the next five years and thereafter were as follows (in thousands): Leases (1) 2019 $ 4,634 2020 5,813 2021 5,678 2022 5,580 2023 4,903 Thereafter 19,252 Total $ 45,860 ________________________ (1) Amounts are based on ASC 840, Leases that was superseded upon the adoption of ASC 842, Leases on January 1, 2019.
Schedule of Changes in Warranty Obligation	Changes in the Company’s warranty liability, which is included in Accrued liabilities in the consolidated balance sheets, were as follows: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at the beginning of the period $ 3,712 $ 31,756 $ 15,949 Reclassified to sales returns upon adoption of ASC 606 (1) — (28,713 ) — Provision for warranty obligation made during the period 260 1,477 51,709 Settlements made during the period (803 ) (808 ) (35,902 ) Balance at the end of the period $ 3,169 $ 3,712 $ 31,756 ________________________ (1) Upon adoption of ASC 606 on January 1, 2018, warranty reserve balances totaling $28.7 million were reclassified to sales returns as these liabilities are payable to the Company’s customers and settled in cash or by credit on account. Under ASC 606, these amounts are to be accounted for as sales with right of return.

Restructuring Related Charges (

Restructuring Related Charges (Tables)	12 Months Ended
	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Summary of Accrued Restructuring and Other Charges Activity	The following table represents the severance expense recorded in the Company's Consolidated Statements of Operations : Year Ended December 31, 2019 (In thousands) Cost of revenue $ 69 Research and development 262 Sales and marketing 198 General and administrative 102 Total $ 631
Schedule of Restructuring Reserve by Type of Cost	The following table provides a summary of accrued restructuring and other charges activity: Year Ended December 31, 2019 (In thousands) Balance at the beginning of the period $ — Additions 631 Cash payments (511 ) Balance at the end of the period $ 120

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Employee Benefit and Share-based Payment Arrangement, Noncash Expense [Abstract]
Schedule of Share-based Compensation Activity	The following table sets forth the available shares for future grants under the 2018 Plan as of December 31, 2019 and December 31, 2018 : Number of Shares (In thousands) Shares reserved as of August 2, 2018 7,500 Granted at IPO (1) (3,403 ) Granted during the period (137 ) Additional authorized shares in the Distribution 6,823 Converted in the Distribution (2) (6,823 ) Cancelled 9 Shares available for grants as of December 31, 2018 3,969 Additional authorized shares 2,970 Granted (4) (6,700 ) Forfeited/ cancelled (3) 2,011 Shares traded for taxes 380 Shares available for grants as of December 31, 2019 2,630 _________________________ (1) Includes Arlo IPO Options of 2.8 million shares granted to the Company’s NEOs with performance-based vesting criteria (in addition to service-based vesting criteria for any of such IPO Options that are deemed to have been earned). Each of the IPO Options will have a ten-year contractual term and an exercise price equal to the fair value of a share of Arlo common stock on the date of grant and will vest as follows: • The Tranche 1 Service Option will vest in equal monthly installments during the 24 -month period that begins on the two-year anniversary of the option grant date; • The Tranche 2 Performance Option will vest on the later of (i) the date (prior to the four -year anniversary of the grant date) of satisfaction of a cumulative registered accounts milestone and (ii) if the milestone has been satisfied prior to the applicable date, then (a) with respect to 25% of the Tranche 2 Performance Option, on the first anniversary of the option grant date, (b) with respect to 25% of the Tranche 2 Performance Option, on the second anniversary of the option grant date, and (c) with respect to the remaining 50% of the Tranche 2 Performance Option, in equal monthly installments during the 24-month period on the first day of each month beginning on September 1, 2020; • The Tranche 3 Performance Option will vest on the later of (i) the date (prior to the four -year anniversary of the grant date) of satisfaction of a paid recurring revenue milestone and (ii) if the milestone has been satisfied prior to the applicable date, then (a) with respect to 25% of the Tranche 3 Performance Option, on the first anniversary of the option grant date, (b) with respect to 25% of the Tranche 3 Performance Option, on the second anniversary of the option grant date, and (c) with respect to the remaining 50% of the Tranche 3 Performance Option, in equal monthly installments during the 24-month period on the first day of each month beginning on September 1, 2020; • The Tranche 4 Performance Option will vest on the one-year anniversary of the grant date based on the extent to which the revenue and non-GAAP gross profit milestones for the second half of fiscal 2018 are achieved; and • The Tranche 5 Performance Option will vest on the two-year anniversary of the grant date based on the extent to which the revenue and non-GAAP gross profit milestones for the fiscal 2019 are achieved. As of December 31, 2019, Tranches 2 and 3 are on track in achieving the performance milestones. However, Tranches 4 and 5 performance measurement period were completed and none of the performance milestones were achieved, hence, none of the shares vested. (2) On December 31, 2018, in connection with the Distribution, certain NETGEAR equity awards held by Arlo non-employee directors and employees and NETGEAR non-employee directors and employees were adjusted into equity awards with respect to Arlo common stock and NETGEAR common stock as described in more detail in the employee matters agreement. (3) Includes 0.3 million shares subject to awards that were cancelled in connection with Mr. Collins’ separation from the Company, 0.5 million shares subject to the IPO Options that were voluntarily forfeited by the Chief Executive Officer as the performance metrics for Tranches 4 and 5 of the IPO Options were not achieved, 59 thousand shares subject to the IPO Options issued to the Chief Financial Officer were cancelled as the performance metrics for Tranches 4 were not achieved, and 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction. (4) Includes $0.8 million shares consisting of RSUs ( 50% of the grant), PSUs ( 25% of the grant) and MPSUs ( 25% of the grant) granted to the Company's NEOs during the fiscal quarter ended September 29, 2019. The RSUs will vest in three equal annual installments during the period that begins on the RSU grant date. The PSUs will vest in three equal annual installments during the period that begins on the PSU grant date based on the extent to which a revenue milestone for the fiscal year ended December 31, 2019 is achieved. As of December 31, 2019, the revenue milestone was not achieved, hence the PSUs were pending cancellation. The MPSUs will vest at the end of the three-year period that begins on the MPSU grant date based on performance of the Company's common stock relative to the Russell 2000 Index (“the Benchmark”) during the three-year period from the grant date. This also includes 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction.
Schedule of Weighted Average Assumptions	The assumptions used in this model to estimate fair value at the grant date are as follows: Year Ended December 31, Expected life 3.0 Risk-free interest rate 1.52 % Expected volatility 65.1 % Dividend yield — Stock Beta 0.30 The following table sets forth the weighted average assumptions used to estimate the fair value of Arlo’s stock options granted using Black-Scholes option pricing model during the years ended December 31, 2019 and 2018 and purchase rights granted under Arlo's ESPP during the year ended December 31, 2019: Stock Options ESPP 2019 2018 2019 Expected life (in years) 6.3 6.3 0.5 Risk-free interest rate 2.28 % 2.86 % 2.49 % Expected volatility 73.0 % 40.0 % 97.6 % Dividend yield — — — The following table sets forth the weighted average assumptions used to estimate the fair value of NETGEAR’s stock options granted and purchase rights granted under the NETGEAR’s ESPP to employees specifically identifiable to Arlo during the years ended December 31, 2018 and 2017 : Stock Options ESPP (1) 2018 2017 2018 2017 Expected life (in years) 4.4 4.4 0.5 0.5 Risk-free interest rate 2.32 % 1.66 % 1.81 % 0.93 % Expected volatility 30.9 % 31.6 % 37.1 % 29.7 % Dividend yield — — — — _________________________ (1) Arlo employees have completed their participation into NETGEAR’s ESPP by the end of the second quarter of fiscal 2018. As of December 31, 2018, no shares had been purchased under the 2018 ESPP by Arlo employees, as the program was suspended until the completion of the Distribution.
Schedule of Stock Option Activity	Arlo’s stock option activity during the year ended of December 31, 2019 was as follows: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (1) (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 7,209 $ 12.08 Granted 10 3.90 Exercised (4 ) 3.03 Forfeited/ Cancelled (2) (938 ) 15.88 Expired (237 ) 10.00 Outstanding as of December 31, 2019 6,040 $ 11.56 6.39 $ 3,100 Vested and expected to vest as of December 31, 2019 6,040 $ 11.56 6.39 $ 3,100 Exercisable Options as of December 31, 2019 3,238 $ 8.54 4.64 $ — _________________________ (1) Representing the total pre-tax intrinsic values (the difference between the Company’s closing stock price on the last trading day of 2019 and the exercise price, multiplied by the number of shares underlying the in-the-money options) that would have been received by the option holders had all option holders exercised their options on December 31, 2019 . This amount changes based on the fair market value of the Company’s stock. (2) Includes 0.3 million shares subject to awards that were cancelled in connection with Mr. Collins’ separation from the Company. In addition, also includes 0.5 million shares subject to the IPO Options that were voluntarily forfeited by the Chief Executive Officer as the performance metrics for Tranches 4 and 5 of the IPO Options were not expected to be achieved. NETGEAR’s stock option activity for employees specifically identifiable to Arlo during the year ended December 31, 2019 was as follows: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 283 $ 26.53 Exercised (48 ) 21.35 Forfeited/cancelled (16 ) 36.27 Expired (14 ) 41.67 Outstanding as of December 31, 2019 205 25.94 5.76 $ 427 Vested and expected to vest as of December 31, 2019 205 25.94 5.76 $ 427 Exercisable options as of December 31, 2019 162 24.08 5.25 $ 425
Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest	Year Ended December 31, 2019 2018 2017 (In millions, except per share data) Total intrinsic value of options exercised $ 0.6 $ 0.6 $ 0.5 Total fair value of options vested $ 0.8 $ 1.1 $ 0.2 Weighted-average grant date fair value per share of NETGEAR’s stock options granted to employees specifically identifiable to Arlo NA $ 20.63 $ 12.25 Year Ended December 31, 2019 2018 2017 (In millions, except per share data) Total intrinsic value of RSUs vested (the release date fair value) $ 5.8 $ 6.9 $ 2.7 Total fair value of RSUs vested (the grant date fair value) $ 5.6 $ 5.0 $ 2.0 weighted-average fair value of RSUs granted NA $ 67.24 $ 52.89 Year Ended December 31, 2019 2018 (In millions, except per share data) Total intrinsic value of options exercised $ — $ — Total fair value of options vested $ 3.10 $ — Weighted-average grant date fair value per share of options granted $ 2.59 $ 7.02 Year Ended December 31, 2019 2018 (In millions, except per share data) Total intrinsic value of RSUs vested (the release date fair value) $ 5.51 $ 0.04 Total fair value of RSUs vested (the grant date fair value) $ 12.90 $ 0.04 Weighted-average fair value of RSUs granted $ 4.77 $ 14.46
Summarizes Significant Ranges of Outstanding Arlo’s Stock Options	The following table summarizes significant ranges of outstanding Arlo’s stock options as of December 31, 2019 . Options Outstanding Options Exercisable Range of Exercise Prices Shares Outstanding Weighted- Average Remaining Contractual Life Weighted- Average Exercise Price Per Share Shares Exercisable Weighted- Average Exercise Price Per Share (In thousands) (In years) (In dollars) (In thousands) (In dollars) 3.90 - 6.68 1,241 3.79 $ 6.52 1,231 $ 6.54 6.80 - 8.11 1,107 3.56 7.59 1,071 7.58 8.21 - 10.09 637 6.92 8.84 407 8.83 13.23 - 13.23 60 8.59 13.23 20 13.23 14.39 - 14.39 616 7.49 14.39 321 14.39 16.00 - 16.00 2,379 8.59 16.00 188 16.00 3.90 - 16.00 6,040 6.39 11.56 3,238 8.54
Schedule of RSU Activity	NETGEAR’s RSU activity for employees specifically identifiable to Arlo during the year ended December 31, 2019 was as follows: Number of Shares Weighted Average Grant Date Fair Value Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 522 $ 34.89 Transferred (1) 2 Vested (175 ) 32.04 Forfeited (71 ) 36.98 Outstanding as of December 31, 2019 278 36.14 1.08 $ 6,804 _________________________ (1) Transferred RSUs are attributable to employees that transferred from NETGEAR’s in the fourth quarter of 2019. Arlo’s RSU activity during the year ended of December 31, 2019 was as follows: Range of Exercise Prices Number of Shares Weighted Average Grant Date Fair Value Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In dollars) (In years) (In thousands) Outstanding as of December 31, 2018 3,141 $ 12.22 Granted (1) 6,690 4.77 Vested (1,146 ) 11.22 Cancelled (2) (834 ) 7.68 Outstanding as of December 31, 2019 7,851 $ 6.50 1.55 $ 33,051 _________________________ (1) Includes 0.8 million shares consisting of RSUs ( 50% of the grant), PSUs ( 25% of the grant) and MPSUs ( 25% of the grant) granted to a group of NEOs during the fiscal quarter ended September 29, 2019. The RSUs will vest in three equal annual installments during the period that begins on the RSU grant date. The PSUs will vest in three equal annual installments during the period that begins on the PSU grant date based on the extent to which a revenue milestone for the fiscal year ended December 31, 2019 is achieved. As of December 31, 2019, the revenue milestone was not achieved, hence the PSUs were pending cancellation. The MPSUs will vest at the end of the three -year period that begins on the MPSU grant date based on performance of the Company's common stock relative to the Benchmark during the three -year period from the grant date. A positive 3.3 x or negative 2.5 x multiplier will be applied to the total shareholder returns (“TSR”), such that the number of shares vested will increase by 3.3% or decrease by 2.5% of the target numbers, for each 1% of positive or negative TSR relative to the Benchmark. In the event the Company's common stock performance is below negative 30% relative to the Benchmark, no shares will be vested. In no event will the number of shares vested exceed 200% of the target for that tranche. In addition, includes 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction. (2) Includes 0.2 million shares as a result of modification for the employees transferred in the Verisure transaction.
Schedule of Total Stock-Based Compensation Expense Resulting from Stock Options, Restricted Stock Awards, and the Employee Stock Purchase Plan	The following tables set forth stock-based compensation expense for Arlo employees and allocated charges deemed attributable to Arlo operations resulting from NETGEAR’s and Arlo’s RSUs, PSUs, MPSUs and stock options, and the purchase rights under the NETGEAR’s ESPP included in the Company’s consolidated statements of operations during the periods indicated: Year Ended December 31, 2019 2018 2017 Total Direct (1) Indirect Total Direct Indirect Total Cost of revenue $ 2,013 $ 608 $ 583 $ 1,191 $ 102 $ 599 $ 701 Research and development 6,868 3,078 396 3,474 1,959 455 2,414 Sales and marketing 3,859 1,992 969 2,961 390 866 1,256 General and administrative 10,154 3,153 2,100 5,253 — 2,547 2,547 Total stock-based compensation expense (2) $ 22,894 $ 8,831 $ 4,048 $ 12,879 $ 2,451 $ 4,467 $ 6,918 _________________________ (1) Reflecting expenses for those legacy NETGEAR stock-based plans that have converted to equivalent Arlo stock-based plans upon the spin-off transaction. (2) There was no tax benefit as a result of the Company's net operating loss position.

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Schedule of Net Income Per Share	Net income (loss) per share for the years ended December 31, 2019 , 2018 and 2017 were as follows: Year Ended December 31, 2019 2018 2017 (In thousands, except for per share data) Numerator: Net income (loss) $ (85,951 ) $ (75,483 ) $ 6,549 Denominator: Weighted average common shares - basic 75,074 67,231 62,250 Potentially dilutive common shares — — — Stock option and RSU conversion (1) — — — Weighted average common shares - dilutive 75,074 67,231 62,250 Basic net income (loss) per share $ (1.14 ) $ (1.12 ) $ 0.11 Diluted net income (loss) per share $ (1.14 ) $ (1.12 ) $ 0.11 Anti-dilutive employee stock-based awards, excluded 9,692 1,109 — _________________________ (1) On December 31, 2018, 6.8 million of stock options and RSUs were added to the Company’s equity awards as issued and outstanding resulting from the adjustment of NETGEAR’s equity awards that were granted to both NETGEAR and Arlo employees and non-employee directors, a portion of which were converted as Arlo awards. The dilutive effect of these converted stock options and RSUs is reflected above per share by application of the treasury stock method and none are potentially dilutive.

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule of Net Revenue by Geography	The following table shows revenue by geography for the periods indicated: Year Ended December 31, 2019 2018 2017 (In thousands) Americas United States (“U.S.”) $ 190,061 $ 359,936 $ 279,504 Americas (excluding U.S.) 99,099 16,869 13,167 EMEA 57,232 65,462 58,795 APAC 23,615 22,651 19,192 Total revenue $ 370,007 $ 464,918 $ 370,658
Schedule of Long-Lived Asset By Geographic Areas	The Company’s Property and equipment, net are located in the following geographic locations: As of December 31, 2019 2018 (In thousands) Americas United States (“U.S.”) $ 17,100 $ 45,053 Americas (excluding U.S.) 904 218 EMEA 316 567 APAC China 2,089 3,040 APAC (excluding China) 943 550 Total property and equipment, net $ 21,352 $ 49,428

Quarterly Unaudited Financial_2

Quarterly Unaudited Financial Data (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Unaudited Financial Data	The following table presents unaudited quarterly financial information for the years ended December 31, 2019 and 2018 . The fourth quarter of 2018 was the first full quarter post separation and represents the Company’s actual results as an independent public company. Results for the first two quarters of 2018 include allocations from NETGEAR and may not be indicative of the Company’s results had it been a standalone entity during the period. December 31, 2019 (3) September 29, June 30, March 31, (In thousands, except per share amounts) Revenue $ 122,413 $ 106,116 $ 83,598 $ 57,880 Gross profit $ 13,706 $ 10,503 $ 9,650 $ 1,945 Provision for (benefit from) income taxes $ 3,525 $ 286 $ 349 $ 220 Net income (loss) $ 19,615 $ (30,590 ) $ (33,692 ) $ (41,284 ) Net income (loss) per share—basic (1) $ 0.26 $ (0.41 ) $ (0.45 ) $ (0.55 ) Net income (loss) per share—diluted $ 0.26 $ (0.41 ) $ (0.45 ) $ (0.55 ) December 31, September 30, July 1, April 1, (In thousands, except per share amounts) Revenue $ 122,158 $ 131,174 $ 110,948 $ 100,638 Gross profit $ 4,981 $ 29,747 $ 28,294 $ 29,053 Provision for income taxes $ (58 ) $ 223 $ 288 $ 319 Net loss $ (39,073 ) $ (13,225 ) $ (17,822 ) $ (5,363 ) Net loss per share—basic (1) $ (0.53 ) $ (0.19 ) $ (0.29 ) $ (0.09 ) Net loss per share—diluted (2) $ (0.53 ) $ (0.19 ) $ (0.29 ) $ (0.09 ) _________________________ (1) Net loss per share basic and diluted are computed independently for each quarters presented based on the weighted-average basic and fully diluted shares outstanding for each quarters. As a result, the sum of quarterly Net loss per share basic and diluted information may not equal annual Net loss per share basic and diluted. (2) On December 31, 2018, 6.8 million of stock options and RSUs were added to the Company’s equity awards as issued and outstanding resulting from the adjustment of NETGEAR’s equity awards that were granted to both NETGEAR and Arlo employees and non-employee directors, a portion of which were converted as Arlo awards. The dilutive effect of these converted stock options and RSUs is reflected above per share by application of the treasury stock method and none are potentially dilutive. (3) The Company disposed its commercial operations in Europe in the fourth quarter of 2019. Refer to Note 4 , Disposal of business , in Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for a complete discussion of the disposal.

The Company and Basis of Pres_2

The Company and Basis of Presentation - Narrative (Details) $ / shares in Units, $ in Millions	Nov. 29, 2018shares	Aug. 07, 2018USD ($)$ / sharesshares	Jul. 01, 2018USD ($)	Dec. 31, 2019shares	Dec. 31, 2017USD ($)	Dec. 31, 2018shares	Aug. 02, 2018$ / sharesshares
Subsidiary, Sale of Stock [Line Items]
Common stock, issued (in shares) | shares				75,785,952		74,247,250
IPO
Subsidiary, Sale of Stock [Line Items]
Common stock, issued (in shares) | shares		11,747,250					10,215,000
Stock price, common stock (in dollars per share) | $ / shares		$ 16					$ 16
Proceeds from initial public offering, net of offering costs		$ 173.4
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Common stock, issued (in shares) | shares		1,532,250
Arlo | IPO
Subsidiary, Sale of Stock [Line Items]
Proceeds from initial public offering, net of offering costs		$ 1.4
Payments for offering costs		4.6
NETGEAR | IPO
Subsidiary, Sale of Stock [Line Items]
Payments for offering costs		$ 3.2
Percentage of shares owned		84.20%
NETGEAR | Special Stock Dividend Distribution
Subsidiary, Sale of Stock [Line Items]
Number of shares issued (in shares) | shares	62,500,000
Ratio of Arlo to NETGEAR common stock (as a ratio)	1.980295			1.980295
NETGEAR | Allocation of Corporate Expenses
Subsidiary, Sale of Stock [Line Items]
Purchases from related party			$ 30.6		$ 40
NETGEAR | Allocation of Corporate Expenses | Research and development
Subsidiary, Sale of Stock [Line Items]
Purchases from related party			9.4		11.8
NETGEAR | Allocation of Corporate Expenses | Sales and marketing
Subsidiary, Sale of Stock [Line Items]
Purchases from related party			10		13.1
NETGEAR | Allocation of Corporate Expenses | General and administrative
Subsidiary, Sale of Stock [Line Items]
Purchases from related party			$ 11.2		$ 15.1

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Summary of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and cash equivalents	$ 236,680	$ 151,290	$ 108
Restricted cash	4,139	4,134	0
Total as presented on the consolidated statements of cash flows	$ 240,819	$ 155,424	$ 108	$ 220

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Summary of Property, Plant and Equipment Range of Useful Lives (Details)	12 Months Ended
	Dec. 31, 2019
Computer equipment
Property, Plant and Equipment [Line Items]
Range of Useful Lives	2 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Range of Useful Lives	5 years
Software | Minimum
Property, Plant and Equipment [Line Items]
Range of Useful Lives	2 years
Software | Maximum
Property, Plant and Equipment [Line Items]
Range of Useful Lives	5 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Range of Useful Lives	2 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Range of Useful Lives	3 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Range of Useful Lives	7 years

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 29, 2019	Sep. 29, 2019segment	Dec. 31, 2019USD ($)segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Oct. 01, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Jan. 01, 2019USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred commissions			$ 0	$ 0
Number of reportable segments | segment			1
Number of operating segments | segment		1	1
Fair value in excess of carrying amount			$ 115,700,000			$ 68,000,000
Fair value in excess of carrying amount (as a percentage)			57.00%			38.00%
Goodwill impairment			$ 0	0	$ 0
Product warranty term			12 months
Impairment of intangible assets			$ 0	0	0
Total cost of revenue			334,203,000	372,843,000	279,424,000
Operating lease right-of-use assets, net			31,300,000	0
Operating lease liability			32,913,000
Property, plant and equipment, gross			41,556,000	60,443,000
Accumulated deficit			$ (131,519,000)	$ (45,849,000)
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated economic useful life			3 years
Subscription contracts term			30 days
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated economic useful life			5 years
Subscription contracts term			12 months
Customer One | Customer Concentration Risk | Accounts Receivable
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration risk (as a percentage)			51.30%	36.40%
Customer Two | Customer Concentration Risk | Accounts Receivable
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration risk (as a percentage)				18.00%
Shipping and Handling
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total cost of revenue			$ 2,300,000	$ 3,700,000	2,800,000
Advertising
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total cost of revenue			9,500,000	10,800,000	$ 10,800,000
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net							$ 7,200,000	$ 14,300,000	$ 14,400,000
Percentage recognized upon completion of leasehold improvement								33.33%
Operating lease liability							$ 7,200,000	$ 14,300,000	14,400,000
Construction in progress
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, gross			0	28,357,000
Construction in progress | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, gross			21,600,000						(21,600,000)
Build-to-Suit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit			$ 281,000	$ 0
Build-to-Suit | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Finance lease liability									(21,900,000)
Accumulated deficit									281,000
Build-to-Suit | Construction in progress | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, gross									21,600,000
Finance lease liability									$ 21,900,000
PSU | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of shares that can be earned of targeted award (as a percentage)			50.00%
PSU | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of shares that can be earned of targeted award (as a percentage)			150.00%
MPSU
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Vesting period			3 years
Positive movement of benchmark (multiplier)			3.3
Negative movement of benchmark (multiplier)			2.5
Positive movement of benchmark (as a percentage)			3.30%
Negative movement of benchmark (as a percentage)			2.50%
Movement of benchmark, increment (as a percentage)			1.00%
Threshold (as a percentage)			30.00%
MPSU | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Threshold (as a percentage)			200.00%
2018 Plan | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Vesting period			3 years
2018 Plan | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Vesting period			4 years
2018 Plan | Stock Options
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Vesting period			4 years
ESPP purchase price of common stock, percent of market price			100.00%
2018 Plan | RSUs | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Vesting period			3 years
2018 Plan | RSUs | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Vesting period			4 years
2018 Stock Repurchase Program | ESPP
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Maximum percentage of compensation contributed by employees				15.00%
ESPP purchase price of common stock, percent of market price				85.00%
Offering period (in years)			6 months
Executive Officer | RSUs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock awards, annual vesting installments (as a percentage)	50.00%
Executive Officer | PSU
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock awards, annual vesting installments (as a percentage)	25.00%
Executive Officer | MPSU
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock awards, annual vesting installments (as a percentage)	25.00%

Deferred Revenue (Narrative) (D

Deferred Revenue (Narrative) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019USD ($)	Sep. 29, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jul. 01, 2018USD ($)	Apr. 01, 2018USD ($)	Dec. 31, 2019USD ($)region	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Revenue from Contract with Customer [Abstract]
Revenue deferred, prepayment									$ 20,000
Revenue deferred for installment									2,500
Revenue	$ 122,413	$ 106,116	$ 83,598	$ 57,880	$ 122,158	$ 131,174	$ 110,948	$ 100,638	370,007	$ 464,918	$ 370,658
Revenue deferred due to unsatisfied performance obligations									71,600	50,900
Revenue recognized for satisfaction of performance obligations over time									47,400	38,800
Recognized revenue that was included in contract liability balance at beginning of period									$ 26,400	$ 24,700
Number of geographic regions in which the Company conducts business | region									3

Deferred Revenue (Schedule of R

Deferred Revenue (Schedule of Remaining Performance Obligations) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Performance obligations	$ 74,464
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue from Contract with Customer [Abstract]
Performance obligations	$ 58,441
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue from Contract with Customer [Abstract]
Performance obligations	$ 12,108
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue from Contract with Customer [Abstract]
Performance obligations	$ 3,915
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction

Deferred Revenue (Schedule of C

Deferred Revenue (Schedule of Changes in Contract Balances and Impacts of Entries to Adopt ASC 606) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Accounts receivable, net
Beginning balance	$ 166,045
$ change	$ (38,728)
% change	(23.30%)
Ending balance	$ 127,317
Contract liabilities - current
Beginning balance	26,678
$ change	$ 23,684
% change	88.80%
Ending balance	$ 50,362
Contract liabilities - non-current
Beginning balance	23,313
$ change	$ (7,577)
% change	(32.50%)
Ending balance	$ 15,736

Disposal of Business (Details)

Disposal of Business (Details) - USD ($) $ in Thousands

Dec. 30, 2019

Nov. 04, 2019

Feb. 28, 2020

Dec. 31, 2019

Dec. 31, 2019

Sep. 29, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jul. 01, 2018

Apr. 01, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Business Acquisition [Line Items]

Proceeds from sale of business

$ 52,700

$ 52,694

$ 0

$ 0

Gain on sale of business

54,900

54,881

0

0

Purchase commitment, remaining minimum amount committed

$ 29,600

$ 29,600

29,600

Revenue

122,413

$ 106,116

$ 83,598

$ 57,880

$ 122,158

$ 131,174

$ 110,948

$ 100,638

370,007

$ 464,918

$ 370,658

Verisure S.a.r.l

Business Acquisition [Line Items]

Noncompete agreements term

3 years

Prepayments received

$ 20,000

22,500

Transition services agreement, consideration

798

Subsequent Event | Verisure S.a.r.l

Business Acquisition [Line Items]

Prepayments received

$ 40,000

Verisure S.a.r.l

Business Acquisition [Line Items]

Purchase commitment, remaining minimum amount committed

500,000

$ 500,000

500,000

NRE Service

Business Acquisition [Line Items]

Revenue

$ 279

NRE Service | Verisure S.a.r.l

Business Acquisition [Line Items]

Aggregate consideration for services

$ 10,000

Proceeds received on NRE Service

$ 2,500

IT Support

Business Acquisition [Line Items]

Transition services agreement, term

12 months

Minimum | Other services

Business Acquisition [Line Items]

Transition services agreement, term

3 months

Maximum | Other services

Business Acquisition [Line Items]

Transition services agreement, term

6 months

Balance Sheet Components (Sched

Balance Sheet Components (Schedule of Available-for-Sale Short-Term Investments) (Details) - U.S. treasuries - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-For-Sale [Line Items]
Cost	$ 19,967	$ 49,739
Unrealized Gains	23	2
Unrealized Losses	0	(4)
Estimated Fair Value	$ 19,990	$ 49,737

Balance Sheet Components (Sch_2

Balance Sheet Components (Schedule of Accounts Receivable) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Gross accounts receivable	$ 127,926	$ 166,172
Allowance for doubtful accounts	(609)	(127)		$ (207)	$ (206)
Total accounts receivable, net	$ 127,317	$ 166,045	$ 158,507

Balance Sheet Components (Sch_3

Balance Sheet Components (Schedule of Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at the beginning of the period	$ 127	$ 207	$ 206
Additions	482	0	1
Deductions	0	(80)	0
Balance at the end of the period	$ 609	$ 127	$ 207

Balance Sheet Components (Sch_4

Balance Sheet Components (Schedule of Property and Equipment, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Total property and equipment, gross	$ 41,556		$ 60,443
Accumulated depreciation	(20,204)		(11,015)
Total property and equipment, net	21,352		49,428
Machinery and equipment
Total property and equipment, gross	13,402		11,415
Software
Total property and equipment, gross	11,945		10,624
Computer equipment
Total property and equipment, gross	4,047		4,342
Leasehold improvements
Total property and equipment, gross	8,087		3,007
Furniture and fixtures
Total property and equipment, gross	4,075		2,698
Construction in progress
Total property and equipment, gross	0		$ 28,357
Construction in progress | Accounting Standards Update 2016-02
Total property and equipment, gross	$ 21,600	$ (21,600)

Balance Sheet Components (Prope

Balance Sheet Components (Property and Equipment, Other Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Depreciation expense	$ 9.2	$ 3.8	$ 1.8
Depreciation expense allocated from NETGEAR		$ 1.2	$ 2

Balance Sheet Components (Sch_5

Balance Sheet Components (Schedule of Intangibles, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross	$ 10,300	$ 10,600
Accumulated Amortization	(8,994)	(7,777)
Net	1,306	2,823
Technology
Finite-Lived Intangible Assets [Line Items]
Gross	9,800	9,800
Accumulated Amortization	(8,540)	(7,165)
Net	1,260	2,635
Other
Finite-Lived Intangible Assets [Line Items]
Gross	500	800
Accumulated Amortization	(454)	(612)
Net	$ 46	$ 188

Balance Sheet Components (Intan

Balance Sheet Components (Intangibles, Other Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Acquired intangible assets, estimated useful life	10 months 24 days
Amortization of intangibles	$ 1,500,000	$ 1,500,000	$ 1,900,000
Impairment of intangible assets	$ 0	$ 0	$ 0

Balance Sheet Components (Sch_6

Balance Sheet Components (Schedule of Estimated Amortization Expense Related to Intangibles) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Net	$ 1,306	$ 2,823

Balance Sheet Components (Sch_7

Balance Sheet Components (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 11,038		$ 15,638
Derecognize goodwill		$ 4,600

Balance Sheet Components (Goodw

Balance Sheet Components (Goodwill Impairment Narrative) (Details) $ / shares in Units, $ in Millions	Feb. 05, 2019$ / shares	Sep. 29, 2019segment	Dec. 31, 2019USD ($)segment	Oct. 01, 2019USD ($)
Balance Sheet Related Disclosures [Abstract]
Average cost per share, measurement period	8 days
Average cost per share (in usd per share) | $ / shares	$ 3.71
Decrease in average cost per share (as a percentage)	223.30%
Number of operating segments | segment		1	1
Fair value in excess of carrying amount			$ 115.7	$ 68
Fair value in excess of carrying amount (as a percentage)			57.00%	38.00%
Expected goodwill impairment			$ 11

Balance Sheet Components (Sch_8

Balance Sheet Components (Schedule of Other Non-Current Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Non-current deferred income taxes	$ 1,318	$ 1,108
Deposits	764	4,084
Other	1,926	3,257
Total other non-current assets	$ 4,008	$ 8,449

Balance Sheet Components (Sch_9

Balance Sheet Components (Schedule of Other Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Sales and marketing	$ 53,974	$ 75,863
Sales returns	28,817	49,247
Warranty obligation	3,169	3,712
Accrued employee compensation	11,795	11,897
Operating lease liabilities	3,912
Freight	2,690	3,913
Current financing lease obligation	0	1,632
Other	23,043	25,772
Total accrued liabilities	$ 127,400	$ 172,036

Fair Value Measurements (Summar

Fair Value Measurements (Summary of Valuation of Company's Financial Instruments by Various Levels) (Details) - Fair value, measurements, recurring - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents: money-market funds (90 days)	$ 31,472,000	$ 438,000
Foreign currency forward contracts	27,000	322,000
Total assets measured at fair value	51,489,000	50,497,000
Foreign currency forward contracts	375,000	71,000
Total liabilities measured at fair value	375,000	71,000
Quoted market prices in active markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents: money-market funds (90 days)	31,472,000	438,000
Foreign currency forward contracts	0	0
Total assets measured at fair value	51,462,000	50,175,000
Foreign currency forward contracts	0	0
Total liabilities measured at fair value	0	0
Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents: money-market funds (90 days)	0	0
Foreign currency forward contracts	27,000	322,000
Total assets measured at fair value	27,000	322,000
Foreign currency forward contracts	375,000	71,000
Total liabilities measured at fair value	375,000	71,000
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0
Total liabilities measured at fair value	0
U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities: U.S. treasuries	19,990,000	49,737,000
U.S. treasuries | Quoted market prices in active markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities: U.S. treasuries	19,990,000	49,737,000
U.S. treasuries | Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities: U.S. treasuries	$ 0	$ 0

Derivative Financial Instrume_3

Derivative Financial Instruments (Narrative) (Details) - Foreign currency contracts $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)derivative_instrument
Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Number of derivatives entered into | derivative_instrument	10
Average size of derivative contracts | $	$ 1.7
Cash Flow Hedges
Derivative [Line Items]
Number of derivatives entered into | derivative_instrument	8
Average size of derivative contracts | $	$ 2
Minimum | Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Term of derivative contracts	1 month
Maximum | Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Term of derivative contracts	3 months

Derivative Financial Instrume_4

Derivative Financial Instruments (Schedule of Fair Values of the Company's Derivative Instruments and the Line Items on the Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Gross Amounts of recognized assets	$ 27	$ 322
Gross Amounts of recognized liabilities	375	71
Prepaid expenses and other current assets | Derivative assets not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Gross Amounts of recognized assets	27	293
Prepaid expenses and other current assets | Derivative assets designated as hedging instruments
Derivatives, Fair Value [Line Items]
Gross Amounts of recognized assets	0	29
Other accrued liabilities | Derivative assets not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Gross Amounts of recognized liabilities	347	46
Other accrued liabilities | Derivative assets designated as hedging instruments
Derivatives, Fair Value [Line Items]
Gross Amounts of recognized liabilities	$ 28	$ 25

Derivative Financial Instrume_5

Derivative Financial Instruments (Schedule of Offsetting of Derivative Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	$ 27	$ 322
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Of Assets Presented in the Consolidated Balance Sheets	27	322
Financial Instruments	(27)	(68)
Cash Collateral Pledged	0	0
Net Amount	0	254
HSBC
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	6	100
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Of Assets Presented in the Consolidated Balance Sheets	6	100
Financial Instruments	(6)	0
Cash Collateral Pledged	0	0
Net Amount	0	100
Wells Fargo Bank
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	21	222
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Of Assets Presented in the Consolidated Balance Sheets	21	222
Financial Instruments	(21)	(68)
Cash Collateral Pledged	0	0
Net Amount	$ 0	$ 154

Derivative Financial Instrume_6

Derivative Financial Instruments (Schedule of Offsetting of Derivative Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	$ 375	$ 71
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Of Liabilities Presented in the Consolidated Balance Sheets	375	71
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Financial Instruments	(27)	(68)
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Cash Collateral Pledged	0	0
Net Amount	348	3
HSBC
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	83
Gross Amounts Offset in the Consolidated Balance Sheets	0
Net Amounts Of Liabilities Presented in the Consolidated Balance Sheets	83
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Financial Instruments	(6)
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Cash Collateral Pledged	0
Net Amount	77
JP Morgan
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities		3
Gross Amounts Offset in the Consolidated Balance Sheets		0
Net Amounts Of Liabilities Presented in the Consolidated Balance Sheets		3
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Financial Instruments		0
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Cash Collateral Pledged		0
Net Amount		3
Wells Fargo Bank
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	292	68
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts Of Liabilities Presented in the Consolidated Balance Sheets	292	68
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Financial Instruments	(21)	(68)
Gross Amounts Not Offset in the Unaudited Condensed Consolidated Balance Sheets: Cash Collateral Pledged	0	0
Net Amount	$ 271	$ 0

Derivative Financial Instrume_7

Derivative Financial Instruments (Schedule of Effects and Locations of Gains or Losses Recognized in Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Revenue	$ 122,413	$ 106,116	$ 83,598	$ 57,880	$ 122,158	$ 131,174	$ 110,948	$ 100,638	$ 370,007	$ 464,918	$ 370,658
Cost of revenue									334,203	372,843	279,424
Research and development									69,384	58,794	34,683
Sales and marketing									56,985	52,593	34,340
General and administrative									47,624	28,209	$ 15,096
Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Revenue									370,007	464,918
Cost of revenue									334,203	372,843
Research and development									69,384	58,794
Sales and marketing									56,985	52,593
General and administrative									47,624	28,209
Unrealized gains (losses) on derivatives | Amount Reclassified from AOCI | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Revenue									390	315
Cost of revenue									(3)	0
Research and development									(28)	(2)
Sales and marketing									(44)	(28)
General and administrative									$ (13)	$ (11)

Derivative Financial Instrume_8

Derivative Financial Instruments (Schedule of Derivatives not Designated as Hedging Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Other income (expense), net | Foreign currency contracts | Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on cash flow hedge	$ (24)	$ 589

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI, before tax
Beginning balance	$ 269,502	$ 125,419	$ 73,174
Net current period other comprehensive income (loss)	(2)	0	0
Ending balance	203,376	269,502	125,419
AOCI, Tax
Beginning balance, tax	0	0
Other comprehensive income (loss) before reclassifications, tax	0	0
Less: Amount reclassified from accumulated other comprehensive income (loss), tax	0	0
Net current period other comprehensive income (loss), tax	0	0
Ending balance, tax	0	0	0
AOCI, after tax
Other comprehensive income (loss) before reclassifications	300	274
Less: Amount reclassified from accumulated other comprehensive income (loss)	302	274
Total other comprehensive income (loss), net of tax	(2)	0	0
Unrealized gains (losses) on available-for-sale securities
AOCI, before tax
Beginning balance	(2)	0
Other comprehensive income (loss) before reclassifications	25	(2)
Less: Amount reclassified from accumulated other comprehensive income (loss)	0	0
Net current period other comprehensive income (loss)	25	(2)
Ending balance	23	(2)	0
Unrealized gains (losses) on derivatives
AOCI, before tax
Beginning balance	2	0
Other comprehensive income (loss) before reclassifications	275	276
Less: Amount reclassified from accumulated other comprehensive income (loss)	302	274
Net current period other comprehensive income (loss)	(27)	2
Ending balance	(25)	2	0
Total
AOCI, before tax
Beginning balance	0	0
Ending balance	$ (2)	$ 0	$ 0

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Total revenue	$ 122,413	$ 106,116	$ 83,598	$ 57,880	$ 122,158	$ 131,174	$ 110,948	$ 100,638	$ 370,007	$ 464,918	$ 370,658
Total cost of revenue									334,203	372,843	279,424
Research and development									69,384	58,794	34,683
Sales and marketing									56,985	52,593	34,340
General and administrative									47,624	28,209	$ 15,096
Foreign currency contracts
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Total before tax									275	276
Unrealized gains (losses) on derivatives | Foreign currency contracts
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Total revenue									275	276
Total cost of revenue									0	0
Research and development									0	0
Sales and marketing									0	0
General and administrative									0	0
Amount Reclassified from AOCI | Foreign currency contracts
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Total before tax									302	274
Amount Reclassified from AOCI | Unrealized gains (losses) on derivatives | Foreign currency contracts
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Total revenue									390	315
Total cost of revenue									(3)	0
Research and development									(28)	(2)
Sales and marketing									(44)	(28)
General and administrative									$ (13)	$ (11)

Income Taxes (Summary of Income

Income Taxes (Summary of Income (Loss) Before Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
United States	$ (103,836)	$ (79,581)	$ 3,318
International	22,265	4,870	4,359
Income (loss) before income taxes	$ (81,571)	$ (74,711)	$ 7,677

Income Taxes (Summary of Inco_2

Income Taxes (Summary of Income Tax Provision/Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. Federal									$ 0	$ 0	$ 0
State									58	16	260
Foreign									4,524	1,425	1,255
Current income tax expense (benefit)									4,582	1,441	1,515
Deferred:
U.S. Federal									0	0	(66)
State									0	0	0
Foreign									(202)	(669)	(321)
Deferred income taxes									(202)	(669)	(387)
Provision for income taxes	$ 3,525	$ 286	$ 349	$ 220	$ (58)	$ 223	$ 288	$ 319	$ 4,380	$ 772	$ 1,128

Income Taxes (Summary of Deferr

Income Taxes (Summary of Deferred Tax Assets (Liabilities)) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets:
Accruals and allowances	$ 11,334	$ 17,974
Net operating loss carryforwards	14,355	2,946
Stock-based compensation	3,228	1,927
Lease liabilities	8,212
Deferred revenue	4,417	2,573
Tax credit carryforwards	3,262	0
Depreciation and amortization	7,877	567
Deferred rent	0	373
Total deferred tax assets	52,685	26,360
Deferred Tax Liabilities:
Depreciation and amortization	0	(775)
Lease assets	(7,450)
Total deferred tax liabilities	(7,450)	(775)
Valuation Allowance	(43,917)	(24,477)	$ (15,611)	$ (22,155)
Net deferred tax assets	$ 1,318	$ 1,108

Income Taxes (Schedule of Valua

Income Taxes (Schedule of Valuation Allowance for Deferred Income Tax Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Balance at the beginning of the period	$ 24,477	$ 15,611	$ 22,155
Additions	38,336	13,760	10,896
Deductions	(18,896)	(4,894)	(17,440)
Balance at the end of the period	$ 43,917	$ 24,477	$ 15,611

Income Taxes (Net Operating Los

Income Taxes (Net Operating Loss Carryforwards) (Details) $ in Thousands	Dec. 31, 2019USD ($)
U.S. Federal (1)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 14,028
U.S. Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	47,059
California
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	44,613
Other State (tax effected, net of federal benefit)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 836

Income Taxes (Tax Credit Carryf

Income Taxes (Tax Credit Carryforwards) (Details) $ in Thousands	Dec. 31, 2019USD ($)
U.S. Federal
Tax Credit Carryforward [Line Items]
Tax credit carryforward	$ 1,664
California
Tax Credit Carryforward [Line Items]
Tax credit carryforward	1,395
Foreign
Tax Credit Carryforward [Line Items]
Tax credit carryforward	$ 814

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Valuation Allowance	$ 43,917	$ 24,477	$ 15,611	$ 22,155
Increase in valuation allowance during period	$ 19,400
Effective tax rate	(5.40%)	(1.00%)	14.70%
Amount of interest and penalties	$ 700	$ 20
U.S. Federal (1)
Operating Loss Carryforwards [Line Items]
Effective tax rate	(1.00%)

Income Taxes (Summary of Effect

Income Taxes (Summary of Effective Income Tax Rate Reconciliation, Percent) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax at federal statutory rate	21.00%	21.00%	35.00%
State, net of federal benefit	3.00%	5.90%	(8.70%)
Impact of international operations	1.40%	0.40%	(6.20%)
U.S. Taxes on Foreign Entities	(3.60%)	(1.80%)	0.00%
Stock-based compensation	(2.60%)	(0.10%)	(5.00%)
Tax credits	1.60%	1.50%	(6.80%)
Change in valuation allowance	(23.80%)	(25.20%)	(105.10%)
Impact of the Tax Act	0	0	1.156
Non-deductible transaction costs	(0.70%)	(2.60%)	0.00%
Goodwill derecognition	(1.20%)	0.00%	0.00%
Others	(0.50%)	(0.10%)	(4.10%)
Provision for income taxes	(5.40%)	(1.00%)	14.70%

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits beginning balance	$ 22	$ 1,022	$ 676
Additions based on tax positions related to the current year	674	338	361
Additions for tax positions of prior years		8	30
Reductions for tax positions of prior years			(45)
Adjustments to Net parent investments		(1,338)
Unrecognized tax benefits ending balance	$ 704	$ 22	$ 1,022

Commitments and Contingencies_2

Commitments and Contingencies (Additional Information) (Details) - USD ($)	5 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019
Loss Contingencies [Line Items]
Operating lease, renewal term (in years)		5 years
Operating lease, termination period (in years)		1 year
Operating lease, rent expense	$ 1,400,000
Lease expense		$ 7,000,000
Number of days for non-cancellation of purchase obligations prior to expected shipment date		30 days
Non-cancelable purchase commitments with suppliers		$ 29,600,000
Liabilities recorded for director and officer indemnification agreements	0
Liabilities recorded for customers, distributors, and resellers indemnification agreements	0
Continued vesting period after termination without cause (in years)		1 year
Liabilities for executive's employment agreements	$ 0
Loss Liability From Committed Purchases
Loss Contingencies [Line Items]
Loss contingency accrual		$ 1,100,000
Chief Executive Officer
Loss Contingencies [Line Items]
Number of years after change of control to trigger full accelerated vest of unvested portion of stock options (in years)		1 year
Other Key Executives
Loss Contingencies [Line Items]
Maximum number of years covered by accelerated vest for other key executives if term without cause is within one year of change in control (in years)		2 years
46 to 60 Days
Loss Contingencies [Line Items]
Percentage of cancelable orders		50.00%
31 to 45 Days
Loss Contingencies [Line Items]
Percentage of cancelable orders		25.00%
Letters of Credit
Loss Contingencies [Line Items]
Unused letters of credit outstanding		$ 3,600,000
Letters of Credit | Build-to-Suit
Loss Contingencies [Line Items]
Unused letters of credit outstanding		$ 3,100,000
Minimum | 46 to 60 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date		46 days
Minimum | 31 to 45 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date		31 days
Maximum | 46 to 60 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date		60 days
Maximum | 31 to 45 Days
Loss Contingencies [Line Items]
Required notice period prior to expected shipment date		45 days
Federal Action
Loss Contingencies [Line Items]
Loss contingency accrual		$ 1,250,000

Debt (Details)

Debt (Details) - Credit Agreement - Revolving Credit Facility - Line of Credit - USD ($)	Nov. 05, 2019	Dec. 31, 2019
Short-term Debt [Line Items]
Debt term (in years)	2 years
Maximum borrowing capacity	$ 40,000,000
Borrowing base multiplier (as a percentage)	60.00%
Minimum amount of foreign subsidiaries voting interest not secured (as a percentage)	65.00%
Additional interest in event of default (as a percentage)	5.00%
Annual facility fee (as a percentage)	0.25%
Outstanding borrowing under the Credit Facility		$ 0
Prime Rate
Short-term Debt [Line Items]
Basis spread on variable rate (as a percentage)	2.25%

Commitments and Contingencies_3

Commitments and Contingencies (Summary of Effect of Accounting Standard Adoption) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net	$ 21,352					$ 49,428
Operating lease liabilities	3,912
Accrued liabilities	127,400					172,036
Non-current financing lease obligation	0					19,978
Accumulated deficit	(131,519)					(45,849)
Operating lease right-of-use assets, net	31,300					0
Non-current deferred rent	15,736					23,313	$ 13,091
Non-current operating lease liabilities	29,001					0
Total property and equipment, gross	41,556					60,443
Operating lease liability	32,913
Construction in progress
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total property and equipment, gross	0					28,357
Leasehold improvements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total property and equipment, gross	8,087					3,007
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net			$ 7,200	$ 14,300	$ 14,400
Operating lease liability			7,200	14,300	14,400
Accounting Standards Update 2016-02 | Construction in progress
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total property and equipment, gross	21,600				(21,600)
Build-to-suit lease
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net	0					21,610
Accrued liabilities						281
Accrued liabilities						1,632
Non-current financing lease obligation						19,978
Accumulated deficit	$ 281					0
Build-to-suit lease | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property and equipment, net					(21,610)
Accrued liabilities					(281)
Accrued liabilities					(1,632)
Non-current financing lease obligation					(19,978)
Accumulated deficit					281
Finance lease liability					(21,900)
Build-to-suit lease | Accounting Standards Update 2016-02 | Construction in progress
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total property and equipment, gross					21,600
Finance lease liability					21,900
Operating leases
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued liabilities						107
Non-current deferred rent						$ 1,141
Operating leases | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued liabilities					(107)
Operating lease liabilities					2,356
Operating lease right-of-use assets, net			7,200	14,300	14,400
Non-current deferred rent					(1,141)
Non-current operating lease liabilities					12,044
Current deferred rent					(100)
Noncurrent deferred rent					(1,100)
Operating lease liability			$ 7,200	$ 14,300	$ 14,400
Operating leases | Accounting Standards Update 2016-02 | Leasehold improvements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reimbursement for leasehold improvements		$ 3,100

Commitments and Contingencies_4

Commitments and Contingencies (Schedule of Supplemental Cash Flow Information) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 4,888
Right-of-use assets obtained in exchange for lease liabilities
Operating leases	21,742
Other non-cash increases in operating right of use assets	$ 788

Commitments and Contingencies_5

Commitments and Contingencies (Summary of Weighted Averages Related to Operating Leases) (Details)	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Weighted average remaining lease term	7 years 8 months 12 days
Weighted average discount rate	5.67%

Commitments and Contingencies_6

Commitments and Contingencies (Summary of Maturity of Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
2020	$ 5,660
2021	5,735
2022	5,589
2023	4,908
2024	4,450
Thereafter	14,669
Total lease payments	41,011
Less: interest	(8,098)
Total	32,913
Accrued liabilities	3,912
Non-current operating lease liabilities	29,001	$ 0
Total	$ 32,913

Commitments and Contingencies_7

Commitments and Contingencies (Summary of Future Minimum Lease Payment) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
2019	$ 4,634
2020	5,813
2021	5,678
2022	5,580
2023	4,903
Thereafter	19,252
Total	$ 45,860

Commitments and Contingencies_8

Commitments and Contingencies (Schedule of Changes in Warranty Obligation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at the beginning of the period	$ 3,712	$ 31,756	$ 15,949
Reclassified to sales returns upon adoption of ASC 606	0	(28,713)	0
Provision for warranty obligation made during the period	260	1,477	51,709
Settlements made during the period	(803)	(808)	(35,902)
Balance at the end of the period	$ 3,169	$ 3,712	$ 31,756

Restructuring Related Charges_2

Restructuring Related Charges (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Restructuring and Related Activities [Abstract]
Restructuring charges	$ 631

Restructuring Related Charges_3

Restructuring Related Charges (Schedule of Restructuring and Other Charges) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 631
Cost of revenue
Restructuring Cost and Reserve [Line Items]
Restructuring charges	69
Research and development
Restructuring Cost and Reserve [Line Items]
Restructuring charges	262
Sales and marketing
Restructuring Cost and Reserve [Line Items]
Restructuring charges	198
General and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 102

Restructuring Related Charges_4

Restructuring Related Charges (Schedule of Restructuring Reserve) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	$ 0
Additions	631
Cash payments	(511)
Balance at the end of the period	$ 120

Employee Benefit Plans (Additio

Employee Benefit Plans (Additional Information) (Details)	Nov. 29, 2018	Dec. 31, 2019
NETGEAR | Special Stock Dividend Distribution
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ratio of Arlo to NETGEAR common stock (as a ratio)	1.980295	1.980295
2018 Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting term (in years)		3 years
2018 Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting term (in years)		4 years
2018 Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting term (in years)		4 years
Award expiration period		10 years
Purchase price of common stock, percent of market price (no less than)		100.00%
2018 Plan | Stock Options | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting term (in years)		12 months
2018 Plan | Stock Options | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting term (in years)		3 years

Employee Benefit Plans (Arlo Su

Employee Benefit Plans (Arlo Summary of Available Shares for Future Grants) (Details) - 2018 Plan - shares shares in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Aug. 02, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved (in shares)			7,500
Shares available for grants (in shares)	3,969	2,630
Granted at IPO (in shares)			(3,403)
Granted during the period (in shares)	(137)	(6,700)
Additional authorized (in shares)	6,823	2,970
Converted at Distribution (in shares)	(6,823)
Cancelled (in shares)	9
Forfeited/ cancelled (in shares)		2,011
Shares traded for taxes (in shares)		380
Shares available for grants (in shares)		3,969

Employee Benefit Plans (Arlo _2

Employee Benefit Plans (Arlo Summary of Available Shares for Future Grants footnote) (Details) shares in Thousands	3 Months Ended	12 Months Ended
	Sep. 29, 2019	Dec. 31, 2019installmentshares	Dec. 31, 2018shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting, number of installments | installment		3
Granted (in shares)		800
Stock Options, IPO performance-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)			2,800
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		6,690
MPSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
IPO | 2018 Plan | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		24 months
IPO | 2018 Plan | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
IPO | 2018 Plan | Performance Shares | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)		50.00%
IPO | 2018 Plan | Performance Shares | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)		50.00%
IPO | 2018 Plan | Performance Shares | First Anniversary | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)		25.00%
IPO | 2018 Plan | Performance Shares | First Anniversary | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)		25.00%
IPO | 2018 Plan | Performance Shares | Second Anniversary | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)		25.00%
IPO | 2018 Plan | Performance Shares | Second Anniversary | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Vesting rights (percentage)		25.00%
Terminated NEO | Stock Options, IPO performance-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted at Distribution (in shares)		300
CEO | Stock Options, IPO performance-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted at Distribution (in shares)		500
Executive Officer | Stock Options, IPO performance-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted at Distribution (in shares)		59
Executive Officer | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)	50.00%
Awards granted, percentage	50.00%
Executive Officer | PSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)	25.00%
Awards granted, percentage	25.00%
Executive Officer | MPSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percentage)	25.00%
Awards granted, percentage	25.00%
Verisure S.a.r.l
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employees transferred		200

Employee Benefit Plans (Employe

Employee Benefit Plans (Employee Stock Purchase Plan) (Details) - ESPP - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of stock price purchased at purchase date	85.00%
Number of shares purchased (in shares)		0
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of compensation contributed by employees (as a percentage)	15.00%
Percentage of stock price purchased at offering date (as a percentage)	85.00%
Reserved stock for issuance, common stock	1,500,000
ESPP | NETGEAR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP compensation expense		$ 0.2	$ 0.2
Number of shares purchased (in shares)		37,000	19,000
Average exercise price (in dollars per share)		$ 45.06	$ 43.09

Employee Benefit Plans (Arlo We

Employee Benefit Plans (Arlo Weighted-Average Assumptions) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	6 years 3 months 18 days	6 years 3 months 18 days
Risk-free interest rate	2.28%	2.86%
Expected volatility	73.00%	40.00%
Dividend yield	0.00%	0.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	15 days
Risk-free interest rate	2.49%
Expected volatility	97.60%
Dividend yield	0.00%

Employee Benefit Plans (Arlo Sc

Employee Benefit Plans (Arlo Schedule of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Weighted Average Exercise Price Per Share
Weighted average remaining term (in years)	1 year 6 months 18 days
Outstanding Shares, Aggregate Intrinsic Value | $	$ 33,051
2018 Plan
Number of Shares
Forfeited/ cancelled (in shares)	(2,011)
Stock Options
Number of Shares
Beginning balance (in shares)	7,209
Granted (in shares)	10
Exercised (in shares)	(4)
Forfeited/ cancelled (in shares)	(938)
Expired (in shares)	(237)
Ending balance (in shares)	6,040
Vested and expected to vest (in shares)	6,040
Exercisable Options (in shares)	3,238
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 12.08
Granted (in dollars per share) | $ / shares	3.90
Exercised (in dollars per share) | $ / shares	3.03
Cancelled (in dollars per share) | $ / shares	15.88
Expired (in dollars per share) | $ / shares	10
Ending balance (in dollars per share) | $ / shares	11.56
Vested and expected to vest (in dollars per share) | $ / shares	11.56
Exercisable Options (in dollars per share) | $ / shares	$ 8.54
Weighted average remaining term (in years)	6 years 4 months 20 days
Outstanding Shares, Aggregate Intrinsic Value | $	$ 3,100
Vested and expected to vest, Weighted Average Remaining Contractual Term	6 years 4 months 20 days
Vested and expected to vest, Aggregate Intrinsic Value | $	$ 3,100
Exercisable Options, Weighted Average Remaining Contractual Term	4 years 7 months 20 days
Exercisable Options, Aggregate Intrinsic Value | $	$ 0
Terminated NEO | Stock Options, IPO performance-based
Weighted Average Exercise Price Per Share
Converted at Distribution (in shares)	300
CEO | Stock Options, IPO performance-based
Weighted Average Exercise Price Per Share
Converted at Distribution (in shares)	500

Employee Benefit Plans (Arlo Es

Employee Benefit Plans (Arlo Estimated Volatility Assumption) (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 0	$ 0
Total fair value of options vested	$ 3,100	$ 0
Granted (in dollars per share)	$ 2.59	$ 7.02

Employee Benefit Plans (Arlo _3

Employee Benefit Plans (Arlo Schedule of Ranges of Outstanding and Exercisable Stock Options) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2019$ / sharesshares
3.90 - 6.68
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit (in dollars per share)	$ 3.90
Exercise Price Range, Upper Range Limit (in dollars per share)	6.68
6.80 - 8.11
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit (in dollars per share)	6.80
Exercise Price Range, Upper Range Limit (in dollars per share)	8.11
8.21 - 10.09
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit (in dollars per share)	8.21
Exercise Price Range, Upper Range Limit (in dollars per share)	10.09
13.23 - 13.23
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit (in dollars per share)	13.23
Exercise Price Range, Upper Range Limit (in dollars per share)	13.23
14.39 - 14.39
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit (in dollars per share)	14.39
Exercise Price Range, Upper Range Limit (in dollars per share)	14.39
16.00 - 16.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit (in dollars per share)	16
Exercise Price Range, Upper Range Limit (in dollars per share)	$ 16
Stock Options
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	6,040
Options Outstanding, Weighted- Average Remaining Contractual Life	6 years 4 months 20 days
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 11.56
Options Exercisable, Number of Exercisable Options (in shares) | shares	3,238
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 8.54
Stock Options | 3.90 - 6.68
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	1,241
Options Outstanding, Weighted- Average Remaining Contractual Life	3 years 9 months 14 days
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 6.52
Options Exercisable, Number of Exercisable Options (in shares) | shares	1,231
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 6.54
Stock Options | 6.80 - 8.11
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	1,107
Options Outstanding, Weighted- Average Remaining Contractual Life	3 years 6 months 21 days
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 7.59
Options Exercisable, Number of Exercisable Options (in shares) | shares	1,071
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 7.58
Stock Options | 8.21 - 10.09
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	637
Options Outstanding, Weighted- Average Remaining Contractual Life	6 years 11 months 1 day
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 8.84
Options Exercisable, Number of Exercisable Options (in shares) | shares	407
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 8.83
Stock Options | 13.23 - 13.23
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	60
Options Outstanding, Weighted- Average Remaining Contractual Life	8 years 7 months 2 days
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 13.23
Options Exercisable, Number of Exercisable Options (in shares) | shares	20
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 13.23
Stock Options | 14.39 - 14.39
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	616
Options Outstanding, Weighted- Average Remaining Contractual Life	7 years 5 months 26 days
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 14.39
Options Exercisable, Number of Exercisable Options (in shares) | shares	321
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 14.39
Stock Options | 16.00 - 16.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Outstanding Options ( in shares) | shares	2,379
Options Outstanding, Weighted- Average Remaining Contractual Life	8 years 7 months 2 days
Options Outstanding, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 16
Options Exercisable, Number of Exercisable Options (in shares) | shares	188
Options Exercisable, Weighted- Average Exercise Price Per Share (in dollars per share)	$ 16

Employee Benefit Plans (NETGEAR

Employee Benefit Plans (NETGEAR Weighted-Average Assumptions) (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	6 years 3 months 18 days	6 years 3 months 18 days
Risk-free interest rate	2.28%	2.86%
Expected volatility	73.00%	40.00%
Dividend yield	0.00%	0.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	15 days
Risk-free interest rate	2.49%
Expected volatility	97.60%
Dividend yield	0.00%
Number of shares purchased (in shares)		0
NETGEAR | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life		4 years 4 months 24 days	4 years 4 months 24 days
Risk-free interest rate		2.32%	1.66%
Expected volatility		30.90%	31.60%
Dividend yield		0.00%	0.00%
NETGEAR | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life		15 days	15 days
Risk-free interest rate		1.81%	0.93%
Expected volatility		37.10%	29.70%
Dividend yield		0.00%	0.00%

Employee Benefit Plans (NETGE_2

Employee Benefit Plans (NETGEAR Schedule of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Weighted Average Exercise Price Per Share
Weighted average remaining term (in years)	1 year 6 months 18 days
Outstanding Shares, Aggregate Intrinsic Value | $	$ 33,051
Stock Options
Number of Shares
Beginning balance (in shares) | shares	7,209
Exercised (in shares) | shares	(4)
Forfeited/ cancelled (in shares) | shares	(938)
Expired (in shares) | shares	(237)
Ending balance (in shares) | shares	6,040
Vested and expected to vest (in shares) | shares	6,040
Exercisable Options (in shares) | shares	3,238
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 12.08
Exercised (in dollars per share) | $ / shares	3.03
Cancelled (in dollars per share) | $ / shares	15.88
Expired (in dollars per share) | $ / shares	10
Ending balance (in dollars per share) | $ / shares	11.56
Vested and expected to vest (in dollars per share) | $ / shares	11.56
Exercisable Options (in dollars per share) | $ / shares	$ 8.54
Weighted average remaining term (in years)	6 years 4 months 20 days
Outstanding Shares, Aggregate Intrinsic Value | $	$ 3,100
Vested and expected to vest, Weighted Average Remaining Contractual Term	6 years 4 months 20 days
Vested and expected to vest, Aggregate Intrinsic Value | $	$ 3,100
Exercisable Options, Weighted Average Remaining Contractual Term	4 years 7 months 20 days
Exercisable Options, Aggregate Intrinsic Value | $	$ 0
NETGEAR | Stock Options
Number of Shares
Beginning balance (in shares) | shares	283
Exercised (in shares) | shares	(48)
Forfeited/ cancelled (in shares) | shares	(16)
Expired (in shares) | shares	(14)
Ending balance (in shares) | shares	205
Vested and expected to vest (in shares) | shares	205
Exercisable Options (in shares) | shares	162
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 26.53
Exercised (in dollars per share) | $ / shares	21.35
Cancelled (in dollars per share) | $ / shares	36.27
Expired (in dollars per share) | $ / shares	41.67
Ending balance (in dollars per share) | $ / shares	25.94
Vested and expected to vest (in dollars per share) | $ / shares	25.94
Exercisable Options (in dollars per share) | $ / shares	$ 24.08
Weighted average remaining term (in years)	5 years 9 months 3 days
Outstanding Shares, Aggregate Intrinsic Value | $	$ 427
Vested and expected to vest, Weighted Average Remaining Contractual Term	5 years 9 months 3 days
Vested and expected to vest, Aggregate Intrinsic Value | $	$ 427
Exercisable Options, Weighted Average Remaining Contractual Term	5 years 3 months
Exercisable Options, Aggregate Intrinsic Value | $	$ 425

Employee Benefit Plans (NETGE_3

Employee Benefit Plans (NETGEAR Estimated Volatility Assumption) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 0	$ 0
Total fair value of options vested	$ 3,100	$ 0
Granted (in dollars per share)	$ 2.59	$ 7.02
NETGEAR | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP purchases by employees specifically identifiable		$ 400	$ 1,600
NETGEAR | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 600	600	500
Total fair value of options vested	$ 800	$ 1,100	$ 200
Granted (in dollars per share)		$ 20.63	$ 12.25

Employee Benefit Plans (Arlo _4

Employee Benefit Plans (Arlo Schedule of RSU Activity) (Details) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 29, 2019shares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018$ / sharesshares
Number of Shares
Granted (in shares)		800,000
Weighted Average Grant Date Fair Value Per Share
Weighted average remaining term (in years)		1 year 6 months 18 days
Outstanding Shares, Aggregate Intrinsic Value | $		$ 33,051
Verisure S.a.r.l
Weighted Average Grant Date Fair Value Per Share
Employees transferred		200,000
MPSU
Weighted Average Grant Date Fair Value Per Share
Positive movement of benchmark (multiplier)		3.3
Negative movement of benchmark (multiplier)		2.5
Positive movement of benchmark (as a percentage)		3.30%
Negative movement of benchmark (as a percentage)		2.50%
Movement of benchmark, increment (as a percentage)		1.00%
Threshold (as a percentage)		30.00%
RSUs
Number of Shares
Beginning balance (in shares)		3,141,000
Granted (in shares)		6,690,000
Vested (in shares)		(1,146,000)
Forfeited / Cancelled (in shares)		(834,000)
Ending balance (in shares)		7,851,000	3,141,000
Weighted Average Grant Date Fair Value Per Share
Beginning Balance (in dollars per share) | $ / shares		$ 12.22
Granted (in dollars per share) | $ / shares		4.77	$ 14.46
Vested (in dollars per share) | $ / shares		11.22
Forfeited / Cancelled (in dollars per share) | $ / shares		7.68
Ending Balance (in dollars per share) | $ / shares		$ 6.50	$ 12.22
Maximum | MPSU
Weighted Average Grant Date Fair Value Per Share
Threshold (as a percentage)		200.00%
2018 Plan
Number of Shares
Converted at Distribution (in shares)			6,823,000
2018 Plan | RSUs
Weighted Average Grant Date Fair Value Per Share
Number of shares granted (in shares)	800,000
Executive Officer | MPSU
Weighted Average Grant Date Fair Value Per Share
Stock awards, annual vesting installments (as a percentage)	25.00%
Executive Officer | RSUs
Weighted Average Grant Date Fair Value Per Share
Stock awards, annual vesting installments (as a percentage)	50.00%
Executive Officer | PSU
Weighted Average Grant Date Fair Value Per Share
Stock awards, annual vesting installments (as a percentage)	25.00%

Employee Benefit Plans (Estimat

Employee Benefit Plans (Estimate Fair Value at Grant Date) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 29, 2019	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award modification, liability		$ 859
Award modification, compensation expense		$ 623
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life		6 years 3 months 18 days	6 years 3 months 18 days
Risk-free interest rate		2.28%	2.86%
Expected volatility		73.00%	40.00%
Dividend yield		0.00%	0.00%
Net Asset Value Per Share		$ 2.59	$ 7.02
2018 Plan | MPSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life		3 years
Risk-free interest rate		1.52%
Expected volatility		65.10%
Dividend yield		0.00%
Stock Beta		0.30
Net Asset Value Per Share	$ 4.14

Employee Benefit Plans (Arlo RS

Employee Benefit Plans (Arlo RSU Estimated Volatility Assumption) (Details) - RSUs - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 5,510	$ 40
Total fair value of options vested	$ 12,900	$ 40
Granted (in dollars per share)	$ 4.77	$ 14.46

Employee Benefit Plans (NETGE_4

Employee Benefit Plans (NETGEAR Schedule of RSU Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 29, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Number of Shares
Granted (in shares)		800,000
Weighted Average Grant Date Fair Value Per Share
Weighted average remaining term (in years)		1 year 6 months 18 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash paid			$ 800	$ 1,100
Number of Shares
Beginning balance (in shares)		3,141,000
Granted (in shares)		6,690,000
Vested (in shares)		(1,146,000)
Forfeited / Cancelled (in shares)		(834,000)
Ending balance (in shares)		7,851,000	3,141,000
Weighted Average Grant Date Fair Value Per Share
Beginning Balance (in dollars per share)		$ 12.22
Granted (in dollars per share)		4.77	$ 14.46
Total fair value of options vested		11.22
Forfeited / Cancelled (in dollars per share)		7.68
Ending Balance (in dollars per share)		$ 6.50	$ 12.22
MPSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
NETGEAR | RSUs
Number of Shares
Beginning balance (in shares)		522,000
Transferred (in shares)		2,000
Vested (in shares)		(175,000)
Forfeited / Cancelled (in shares)		(71,000)
Ending balance (in shares)		278,000	522,000
Weighted Average Grant Date Fair Value Per Share
Beginning Balance (in dollars per share)		$ 34.89
Granted (in dollars per share)			$ 67.24	$ 52.89
Total fair value of options vested		32.04
Forfeited / Cancelled (in dollars per share)		36.98
Ending Balance (in dollars per share)		$ 36.14	$ 34.89
Weighted average remaining term (in years)		1 year 29 days
Vested and expected to vest, Aggregate Intrinsic Value		$ 6,804
2018 Plan
Number of Shares
Converted at Distribution (in shares)			6,823,000
2018 Plan | RSUs
Weighted Average Grant Date Fair Value Per Share
Number of shares granted (in shares)	800,000
2018 Plan | NETGEAR
Number of Shares
Converted at Distribution (in shares)		6,800,000	6,800,000
Executive Officer | RSUs
Weighted Average Grant Date Fair Value Per Share
Vesting rights (percentage)	50.00%
Executive Officer | PSU
Weighted Average Grant Date Fair Value Per Share
Vesting rights (percentage)	25.00%
Executive Officer | MPSU
Weighted Average Grant Date Fair Value Per Share
Vesting rights (percentage)	25.00%

Employee Benefit Plans (NETGE_5

Employee Benefit Plans (NETGEAR RSU Estimated Volatility Assumption) (Details) - RSUs - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 5,510	$ 40
Total fair value of options vested	$ 12,900	$ 40
Granted (in dollars per share)	$ 4.77	$ 14.46
NETGEAR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 5,800	$ 6,900	$ 2,700
Total fair value of options vested	$ 5,600	$ 5,000	$ 2,000
Granted (in dollars per share)		$ 67.24	$ 52.89

Employee Benefit Plans (Schedul

Employee Benefit Plans (Schedule of Total Stock-Based Compensation Expense Resulting from Stock Options, Restricted Stock Awards, and the Employee Stock Purchase Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 22,894	$ 12,879	$ 6,918
Direct
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		8,831	2,451
Indirect
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		4,048	4,467
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	2,013	1,191	701
Cost of revenue | Direct
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		608	102
Cost of revenue | Indirect
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		583	599
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	6,868	3,474	2,414
Research and development | Direct
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		3,078	1,959
Research and development | Indirect
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		396	455
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	3,859	2,961	1,256
Sales and marketing | Direct
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		1,992	390
Sales and marketing | Indirect
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		969	866
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 10,154	5,253	2,547
General and administrative | Direct
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		3,153	0
General and administrative | Indirect
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense		$ 2,100	$ 2,547

Employee Benefit Plans (401(k)

Employee Benefit Plans (401(k) Plan) (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual contributions per employee (as a percentage)	100.00%
Employer matching contribution, percent of employees' gross pay (as a percentage)		50.00%
Maximum matching contribution by employer		$ 8,000
Cost recognized			$ 1,500,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 12,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			2 years 7 months 6 days
Performance-Based Restricted Stock Units, Market-Based Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 27,800,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			2 years 8 months 12 days
NETGEAR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual contributions per employee (as a percentage)			100.00%
Employer matching contribution, percent of employees' gross pay (as a percentage)			50.00%
Maximum matching contribution by employer			$ 6,000
Cost recognized				$ 500,000	$ 200,000
NETGEAR | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 400,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 8 months 12 days
NETGEAR | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 7,200,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 10 months 24 days

Net Income (Loss) Per Share (Sc

Net Income (Loss) Per Share (Schedule of Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Aug. 02, 2018	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2018	Aug. 02, 2018	Aug. 02, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock issued during period, common stock	62,499										62,500
Numerator:
Net income (loss)		$ 19,615	$ (30,590)	$ (33,692)	$ (41,284)	$ (39,073)	$ (13,225)	$ (17,822)	$ (5,363)	$ (45,849)		$ (29,634)	$ (85,951)	$ (75,483)	$ 6,549
Denominator:
Weighted average common shares - basic (in shares)													75,074	67,231	62,250
Potentially dilutive common share equivalent (in shares)													0	0	0
Stock option and RSU conversion (in shares)													0	0	0
Weighted average common shares - dilutive (in shares)													75,074	67,231	62,250
Basic net income (loss) per share (in dollars per share)		$ 0.26	$ (0.41)	$ (0.45)	$ (0.55)	$ (0.53)	$ (0.19)	$ (0.29)	$ (0.09)				$ (1.14)	$ (1.12)	$ 0.11
Diluted net income (loss) per share (in dollars per share)		$ 0.26	$ (0.41)	$ (0.45)	$ (0.55)	$ (0.53)	$ (0.19)	$ (0.29)	$ (0.09)				$ (1.14)	$ (1.12)	$ 0.11
Anti-dilutive employee stock-based awards, excluded													9,692	1,109	0
2018 Plan
Denominator:
Converted at Distribution (in shares)						6,823				6,823				6,823
2018 Plan | NETGEAR
Denominator:
Converted at Distribution (in shares)		6,800				6,800				6,800			6,800	6,800

Segment Information (Schedule o

Segment Information (Schedule of Net Revenue by Geographic Areas) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenue	$ 122,413	$ 106,116	$ 83,598	$ 57,880	$ 122,158	$ 131,174	$ 110,948	$ 100,638	$ 370,007	$ 464,918	$ 370,658
United States (“U.S.”)
Segment Reporting Information [Line Items]
Total revenue									190,061	359,936	279,504
Americas (excluding U.S.)
Segment Reporting Information [Line Items]
Total revenue									99,099	16,869	13,167
EMEA
Segment Reporting Information [Line Items]
Total revenue									57,232	65,462	58,795
APAC
Segment Reporting Information [Line Items]
Total revenue									$ 23,615	$ 22,651	$ 19,192

Segment and Geographic Inform_3

Segment and Geographic Information (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019regionsegmentnumber_of_customers	Dec. 31, 2018number_of_customers	Dec. 31, 2017number_of_customers
Segment Reporting Information [Line Items]
Number of reportable segments | segment	1
Number of geographic regions in which the Company conducts business | region	3
Number of customers | number_of_customers	2	3	3
Customer One | Revenue | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	32.30%	24.40%	28.30%
Customer Two | Revenue | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	10.10%	17.50%	16.40%
Customer Three | Revenue | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)		16.60%	13.10%

Segment Information (Schedule_2

Segment Information (Schedule of Long-Lived Asset by Geographic Areas) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Long-Lived Assets [Line Items]
Total property and equipment, net	$ 21,352	$ 49,428
United States (“U.S.”)
Long-Lived Assets [Line Items]
Total property and equipment, net	17,100	45,053
Americas (excluding U.S.)
Long-Lived Assets [Line Items]
Total property and equipment, net	904	218
EMEA
Long-Lived Assets [Line Items]
Total property and equipment, net	316	567
China
Long-Lived Assets [Line Items]
Total property and equipment, net	2,089	3,040
APAC (excluding China)
Long-Lived Assets [Line Items]
Total property and equipment, net	$ 943	$ 550

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Common stock, outstanding (in shares)		75,785,952	74,247,250
Receivables from NETGEAR, net		$ 129	$ 12,200
NETGEAR
Related Party Transaction [Line Items]
Common stock, outstanding (in shares)			62,500,000
Proceeds from Contributions from Parent		70,900
Allocation of Corporate Expenses | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party	$ 30,600			$ 40,000
Allocation of Corporate Expenses | Research and development | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party	9,400			11,800
Allocation of Corporate Expenses | Sales and marketing | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party	10,000			13,100
Allocation of Corporate Expenses | General and administrative | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party	$ 11,200			$ 15,100
Transition Services Agreement | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party		700	$ 6,300
Transition Services Agreement | Research and development | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party		300	400
Transition Services Agreement | Sales and marketing | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party		100	1,600
Transition Services Agreement | General and administrative | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party		200	$ 4,300
Transition Services Agreement | Cost of revenue | NETGEAR
Related Party Transaction [Line Items]
Purchases from related party		$ 100

Quarterly Unaudited Financial_3

Quarterly Unaudited Financial Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2018	Aug. 02, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total revenue	$ 122,413	$ 106,116	$ 83,598	$ 57,880	$ 122,158	$ 131,174	$ 110,948	$ 100,638			$ 370,007	$ 464,918	$ 370,658
Gross profit	13,706	10,503	9,650	1,945	4,981	29,747	28,294	29,053			35,804	92,075	91,234
Provision for (benefit from) income taxes	3,525	286	349	220	(58)	223	288	319			4,380	772	1,128
Net loss	$ 19,615	$ (30,590)	$ (33,692)	$ (41,284)	$ (39,073)	$ (13,225)	$ (17,822)	$ (5,363)	$ (45,849)	$ (29,634)	$ (85,951)	$ (75,483)	$ 6,549
Basic (in dollars per share)	$ 0.26	$ (0.41)	$ (0.45)	$ (0.55)	$ (0.53)	$ (0.19)	$ (0.29)	$ (0.09)			$ (1.14)	$ (1.12)	$ 0.11
Diluted (in dollars per share)	$ 0.26	$ (0.41)	$ (0.45)	$ (0.55)	$ (0.53)	$ (0.19)	$ (0.29)	$ (0.09)			$ (1.14)	$ (1.12)	$ 0.11
2018 Plan
Converted at Distribution (in shares)					6,823				6,823			6,823
2018 Plan | NETGEAR
Converted at Distribution (in shares)	6,800				6,800				6,800		6,800	6,800

Uncategorized Items - arlo20191

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 281,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(3,061,000)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	281,000
Net Income (Loss) Attributable to Parent	us-gaap_NetIncomeLoss	(45,849,000)
Net Parent Investment [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(3,061,000)
Net Income (Loss) Attributable to Parent	us-gaap_NetIncomeLoss	$ (29,634,000)