Insider Trading Arrangements	12 Months Ended
Insider Trading Arrangements	Jan. 03, 2026 shares
Trading Arrangements, by Individual [Table]
Material Terms of Trading Arrangement [Text Block]	*Item 9B.* Other Information Rule 10b5-1 Trading Plans** On November 19, 2025, Tonya Stevens, Corporate Vice President and Chief Accounting Officer, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense condition of Rule 10b5-1(c), pursuant to which an estimated aggregate of 19,095 shares of our Common Stock may be sold. The aggregate number of shares sold may differ based on tax withholdings for vesting stock awards, actual market achievement for performance RSUs, and actual number of future shares purchased under the Employee Stock Purchase Plan. The duration of the trading arrangement is until December 31, 2026, or earlier if all transactions under the trading arrangement are completed. On December 3, 2025, Esam Elashmawi, Senior Vice President and Chief Strategy and Marketing Officer, adopted a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense condition of Rule 10b5-1(c), pursuant to which an estimated aggregate of 38,000 shares of our Common Stock may be sold. The aggregate number of shares sold may differ based on tax withholdings for vesting stock awards, actual market achievement for performance RSUs, and actual number of future shares purchased under the Employee Stock Purchase Plan. The duration of the trading arrangement is until November 20, 2026, or earlier if all transactions under the trading arrangement are completed.
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Corporate Vice President and Chief Accounting Officer [Member]
Trading Arrangements, by Individual [Table]
Trading Arrangement, Securities Aggregate Available Amount	19,095
Trading Arrangement Adoption Date	November 19, 2025
Trading Arrangement, Individual Name	Tonya Stevens
Trading Arrangement, Individual Title	Corporate Vice President and Chief Accounting Officer
Rule 10b5-1 Arrangement Adopted [Flag]	true
Trading Arrangement Expiration Date	December 31, 2026
Senior Vice President and Chief Strategy and Marketing Officer [Member]
Trading Arrangements, by Individual [Table]
Trading Arrangement, Securities Aggregate Available Amount	38,000
Trading Arrangement Adoption Date	December 3, 2025,
Trading Arrangement, Individual Name	Esam Elashmawi
Trading Arrangement, Individual Title	Senior Vice President and Chief Strategy and Marketing Officer
Rule 10b5-1 Arrangement Adopted [Flag]	true
Trading Arrangement Expiration Date	November 20, 2026

LATTICE SEMICONDUCTOR CORP 10-K