Business Combination and Goodwill - Summary of purchase consideration (Details) - AMI Acquisition [Member] $ in Thousands	9 Months Ended
	Oct. 03, 2026 USD ($)
Business Combination [Line Items]
Fair value of Lattice common stock issued for outstanding AMI common stock	$ 582,760
Cash paid for outstanding AMI common stock and vested options to purchase AMI common stock	733,492
Cash payable for outstanding AMI common stock and vested options to purchase AMI common stock	1,188
Cash paid by Lattice to retire AMI's credit agreement	272,224
Total purchase consideration	$ 1,589,664