Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Total Shareholders' Equity	Non-controlling Interest	Total
Balance (in shares) at Dec. 29, 2019	9,272
Balance at Dec. 29, 2019	$ 93	$ 7,856	$ 14,423	$ 22,372	$ (598)	$ 21,774
Issuance of restricted common stock (in shares)	12
Stock-based compensation		422		422		422
Net income (loss)			7,783	7,783	(613)	7,170
Balance (in shares) at Sep. 27, 2020	9,284
Balance at Sep. 27, 2020	$ 93	8,278	22,206	30,577	(1,211)	29,366
Balance (in shares) at Jun. 28, 2020	9,282
Balance at Jun. 28, 2020	$ 93	8,104	21,878	30,075	(941)	29,134
Issuance of restricted common stock (in shares)	2
Stock-based compensation		174		174		174
Net income (loss)			328	328	(270)	58
Balance (in shares) at Sep. 27, 2020	9,284
Balance at Sep. 27, 2020	$ 93	8,278	22,206	30,577	(1,211)	29,366
Balance (in shares) at Jan. 03, 2021	9,307
Balance at Jan. 03, 2021	$ 93	8,748	19,370	28,211	(1,278)	26,933
Issuance of restricted common stock (in shares)	58
Issuance of restricted common stock		(773)		(773)		$ (773)
Issuance of common stock upon exercise of options (in shares)	130					181
Issuance of common stock upon exercise of options	$ 2	121		123		$ 123
Issuance of common stock pursuant to PIPE (in shares)	1,000
Issuance of common stock pursuant to PIPE	$ 10	12,436		12,446		12,446
Stock-based compensation		932		932		932
Net income (loss)			21,419	21,419	494	21,913
Balance (in shares) at Oct. 03, 2021	10,495
Balance at Oct. 03, 2021	$ 105	21,464	40,789	62,358	(784)	61,574
Balance (in shares) at Jul. 04, 2021	10,357
Balance at Jul. 04, 2021	$ 104	22,147	35,955	58,206	(736)	57,470
Issuance of restricted common stock (in shares)	58
Issuance of restricted common stock		(773)		(773)		(773)
Issuance of common stock upon exercise of options (in shares)	80
Issuance of common stock upon exercise of options	$ 1	(188)		(187)		(187)
Issuance of common stock pursuant to PIPE		(16)		(16)		(16)
Stock-based compensation		294		294		294
Net income (loss)			4,834	4,834	(48)	4,786
Balance (in shares) at Oct. 03, 2021	10,495
Balance at Oct. 03, 2021	$ 105	$ 21,464	$ 40,789	$ 62,358	$ (784)	$ 61,574