Contingencies	6 Months Ended
Jul. 02, 2016
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Matters In February 2016, the Company filed a complaint against Technicolor SA and its affiliates in the United States District Court for the Northern District of California alleging that Technicolor had infringed certain patents relating to the HDMI specification. Technicolor filed an answer to the Company’s complaint on April 11, 2016, which included various defenses to the alleged patent infringement. Technicolor also has informed the Company that it will attempt to raise as a counterclaim or in separate litigation a claim for payment to Technicolor and other HDMI founders their respective share of any HDMI adopters’ fees not used by Lattice and its predecessor in interest Silicon Image in the marketing and other activities in furtherance of the HDMI standard. Technicolor previously has indicated its belief that the HDMI founders enjoy a right to these funds but has never pursued such claims. At this stage of the proceedings, we do not have an estimate of the likelihood or the amount of any financial consequences to the Company. We are exposed to certain other asserted and unasserted potential claims. There can be no assurance that, with respect to potential claims made against us, we could resolve such claims under terms and conditions that would not have a material adverse effect on our business, our liquidity or our financial results. Periodically, we review the status of each significant matter and assess its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and a range of possible losses can be estimated, we then accrue a liability for the estimated loss based on the provisions of FASB ASC 450, “Contingencies" (“ASC 450”). Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based only on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation and may revise estimates.

Contingencies

Legal Matters

In February 2016, the Company filed a complaint against Technicolor SA and its affiliates in the United States District Court for the Northern District of California alleging that Technicolor had infringed certain patents relating to the HDMI specification. Technicolor filed an answer to the Company’s complaint on April 11, 2016, which included various defenses to the alleged patent infringement. Technicolor also has informed the Company that it will attempt to raise as a counterclaim or in separate litigation a claim for payment to Technicolor and other HDMI founders their respective share of any HDMI adopters’ fees not used by Lattice and its predecessor in interest Silicon Image in the marketing and other activities in furtherance of the HDMI standard. Technicolor previously has indicated its belief that the HDMI founders enjoy a right to these funds but has never pursued such claims. At this stage of the proceedings, we do not have an estimate of the likelihood or the amount of any financial consequences to the Company.

We are exposed to certain other asserted and unasserted potential claims. There can be no assurance that, with respect to potential claims made against us, we could resolve such claims under terms and conditions that would not have a material adverse effect on our business, our liquidity or our financial results. Periodically, we review the status of each significant matter and assess its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and a range of possible losses can be estimated, we then accrue a liability for the estimated loss based on the provisions of FASB ASC 450, “Contingencies" (“ASC 450”). Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based only on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation and may revise estimates.