Variable Interest Entity (VIE)	6 Months Ended
Variable Interest Entity (VIE)	Jul. 01, 2017
Variable Interest Entity [Abstract]
Variable Interest Entity (VIE)	Variable Interest Entity (VIE) The Company follows authoritative guidance for the consolidation of a VIE, which requires an enterprise to determine whether its variable interest gives it a controlling financial interest in a VIE. Determination about whether an enterprise should consolidate a VIE is required to be evaluated continuously as changes to existing relationships or future transactions may result in consolidating or deconsolidating the VIE. Cercacor is an independent entity that was spun off from the Company to its stockholders in 1998. Joe Kiani, the Company’s Chairman and Chief Executive Officer (CEO), is also the Chairman and CEO of Cercacor. The Company is a party to a Cross-Licensing Agreement with Cercacor, which was most recently amended and restated effective January 1, 2007 (the Cross-Licensing Agreement), that governs each party’s rights to certain intellectual property held by the two companies. The Company is also a party to various other agreements with Cercacor. As a result of changes in the capital structure of Cercacor, as well as certain of its contractual relationships with the Company, the Company completed a re-evaluation of the authoritative consolidation guidance during the first quarter of 2016 and determined that although Cercacor remained a VIE, the Company was no longer its primary beneficiary as it could no longer be deemed to have the power to direct the activities of Cercacor that most significantly impact Cercacor’s economic performance and had no obligation to absorb Cercacor’s losses pursuant to the Company’s on-going contractual relationships with Cercacor. Based on such determination, the Company discontinued consolidating Cercacor within its consolidated financial statements effective as of January 3, 2016. However, Cercacor continues to be a related party following its deconsolidation. The Company recognized a gain of $0.3 million upon such deconsolidation, which has been reported within non-operating income in the accompanying condensed consolidated statement of operations. See Note 4 to these condensed consolidated financial statements for a description of the Company’s continuing business relationships with Cercacor. Cercacor is an independent entity that was spun off from the Company to its stockholders in 1998. Joe Kiani, the Company’s Chairman and Chief Executive Officer (CEO), is also the Chairman and CEO of Cercacor. The Company is a party to a Cross-Licensing Agreement with Cercacor, which was most recently amended and restated effective January 1, 2007 (the Cross-Licensing Agreement), that governs each party’s rights to certain intellectual property held by the two companies. The Company is also a party to various other agreements with Cercacor. As a result of changes in the capital structure of Cercacor, as well as certain of its contractual relationships with the Company, the Company completed a re-evaluation of the authoritative consolidation guidance during the first quarter of 2016 and determined that although Cercacor remained a VIE, the Company was no longer its primary beneficiary as it could no longer be deemed to have the power to direct the activities of Cercacor that most significantly impact Cercacor’s economic performance and had no obligation to absorb Cercacor’s losses pursuant to the Company’s on-going contractual relationships with Cercacor. Based on such determination, the Company discontinued consolidating Cercacor within its consolidated financial statements effective as of January 3, 2016. However, Cercacor continues to be a related party following its deconsolidation. The Company recognized a gain of $0.3 million upon such deconsolidation, which has been reported within non-operating income in the accompanying condensed consolidated statement of operations. See Note 4 to these condensed consolidated financial statements for a description of the Company’s continuing business relationships with Cercacor.