The Company and Basis of Presentation	9 Months Ended
Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company and Basis of Presentation	The Company and Basis of Presentation NETGEAR, Inc. (“NETGEAR” or the “Company”) was incorporated in Delaware in January 1996. The Company is a global company that delivers innovative networking and Internet connected products to consumers and growing businesses. The Company's products are built on a variety of proven technologies such as wireless (WiFi and LTE), Ethernet and powerline, with a focus on reliability and ease-of-use. The product line consists of devices that create and extend wired and wireless networks as well as devices that provide a special function and attach to the network, such as IP security cameras and home automation devices and services. These products are available in multiple configurations to address the changing needs of the customers in each geographic region in which the Company's products are sold. The Company operates and reports in three segments: Arlo, Connected Home, and Small and Medium Business ("SMB"). The Arlo segment is included within a majority-owned, publicly traded subsidiary, Arlo Technologies, Inc. (“Arlo”) upon the completion of Arlo’s initial public offering (the "IPO") on August 7, 2018. See Note 4, Planned Separation of Arlo, for details relating to the IPO. The accompanying unaudited condensed consolidated financial statements include the accounts of NETGEAR, Inc. and its wholly owned subsidiaries, as well as those of its 84.2% interest in Arlo. They have been prepared in accordance with established guidelines for interim financial reporting and with the instructions of Form 10-Q and Article 10 of Regulation S-X. All significant intercompany balances and transactions have been eliminated in consolidation. The resulting non-controlling interest’s share in the equity of Arlo is presented as a separate component of stockholders’ equity in the unaudited condensed consolidated balance sheets and unaudited condensed consolidated statements of stockholders’ equity, and the net income (loss) attributable to the non-controlling interest is presented in the unaudited condensed consolidated statements of operations and statements of comprehensive income. The balance sheet dated December 31, 2017 has been derived from audited financial statements at such date. Accordingly, these unaudited condensed consolidated financial statements do not include all of the information and footnotes typically found in the audited consolidated financial statements and footnotes thereto included in the Annual Report on Form 10-K. In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments considered necessary (consisting only of normal recurring adjustments) to fairly state the Company’s financial position, results of operations, comprehensive income, stockholder's equity and cash flows for the periods indicated. These unaudited condensed consolidated financial statements should be read in conjunction with the notes to the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017. 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 interim 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. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) the disclosure of contingent assets and liabilities at the date of the financial statements, and (iii) the reported amounts of net revenue and expenses during the reported period. Actual results could differ materially from those estimates and operating results for the nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018 or any future period.

The Company and Basis of Presentation

NETGEAR, Inc. (“NETGEAR” or the “Company”) was incorporated in Delaware in January 1996. The Company is a global company that delivers innovative networking and Internet connected products to consumers and growing businesses. The Company's products are built on a variety of proven technologies such as wireless (WiFi and LTE), Ethernet and powerline, with a focus on reliability and ease-of-use. The product line consists of devices that create and extend wired and wireless networks as well as devices that provide a special function and attach to the network, such as IP security cameras and home automation devices and services. These products are available in multiple configurations to address the changing needs of the customers in each geographic region in which the Company's products are sold.

The Company operates and reports in three segments: Arlo, Connected Home, and Small and Medium Business ("SMB"). The Arlo segment is included within a majority-owned, publicly traded subsidiary, Arlo Technologies, Inc. (“Arlo”) upon the completion of Arlo’s initial public offering (the "IPO") on August 7, 2018. See Note 4, Planned Separation of Arlo, for details relating to the IPO.

The accompanying unaudited condensed consolidated financial statements include the accounts of NETGEAR, Inc. and its wholly owned subsidiaries, as well as those of its 84.2% interest in Arlo. They have been prepared in accordance with established guidelines for interim financial reporting and with the instructions of Form 10-Q and Article 10 of Regulation S-X. All significant intercompany balances and transactions have been eliminated in consolidation. The resulting non-controlling interest’s share in the equity of Arlo is presented as a separate component of stockholders’ equity in the unaudited condensed consolidated balance sheets and unaudited condensed consolidated statements of stockholders’ equity, and the net income (loss) attributable to the non-controlling interest is presented in the unaudited condensed consolidated statements of operations and statements of comprehensive income. The balance sheet dated December 31, 2017 has been derived from audited financial statements at such date. Accordingly, these unaudited condensed consolidated financial statements do not include all of the information and footnotes typically found in the audited consolidated financial statements and footnotes thereto included in the Annual Report on Form 10-K. In the opinion of management, the unaudited condensed consolidated financial statements reflect all adjustments considered necessary (consisting only of normal recurring adjustments) to fairly state the Company’s financial position, results of operations, comprehensive income, stockholder's equity and cash flows for the periods indicated. These unaudited condensed consolidated financial statements should be read in conjunction with the notes to the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017.

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 interim 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.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) the disclosure of contingent assets and liabilities at the date of the financial statements, and (iii) the reported amounts of net revenue and expenses during the reported period. Actual results could differ materially from those estimates and operating results for the nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for the year ending December 31, 2018 or any future period.