Disaggregation of Revenues, Geographic Sales and Product Sales - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 01, 2021	Oct. 02, 2020	Jul. 03, 2020	Apr. 03, 2020	Jan. 03, 2020	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
Total net sales	$ 45,998	$ 47,081	$ 35,194	$ 35,187	$ 38,883	$ 39,055	$ 39,664	$ 32,583	$ 163,460	$ 150,185	$ 123,954
Non Consignment Sales [Member]
Total net sales									137,369	132,716	106,338
Consignment Sales [Member]
Total net sales									$ 26,091	$ 17,469	$ 17,616