Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jul. 04, 2020	Jul. 03, 2021	Jul. 04, 2020
Revenues
Revenue from performance obligations that were satisfied in previous reporting periods	$ 8,400	$ 8,500	$ 9,300	$ 9,500
Revenues	169,492	114,350	327,349	232,368
Distributors
Revenues
Revenues	137,933	96,244	265,919	193,765
Direct customers
Revenues
Revenues	$ 31,559	$ 18,106	$ 61,430	$ 38,603