Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Jan. 01, 2022	16,903,157				6,612,222
Balance at Jan. 01, 2022	$ 845	$ 111,068	$ (2,699)	$ (56,985)	$ (26,260)	$ 25,969
Issuance of stock under employee stock purchase plan (in shares)	37,133				0
Issuance of stock under employee stock purchase plan	$ 2	124	0	0	$ 0	126
Equity compensation expense from awards issued	$ 0	403	0	0	$ 0	403
Issuance of stock upon vesting of restricted share awards (in shares)	175,000				0
Issuance of stock upon vesting of restricted share awards	$ 9	(9)	0	0	$ 0	$ 0
Purchase of treasury stock (in shares)	0				406,480	406,480
Purchase of treasury stock	$ 0	0	0	0	$ (2,781)	$ (2,781)
Foreign currency translation adjustment	0	0	(35)	0	0	(35)
Net income (loss)	$ 0	0	0	6,520	$ 0	6,520
Balance (in shares) at Apr. 02, 2022	17,115,290				7,018,702
Balance at Apr. 02, 2022	$ 856	111,586	(2,734)	(50,465)	$ (29,041)	30,202
Balance (in shares) at Dec. 31, 2022	17,287,967				8,002,649
Balance at Dec. 31, 2022	$ 863	113,878	(2,863)	(36,096)	$ (43,820)	31,962
Issuance of stock under employee stock purchase plan (in shares)	33,071				0
Issuance of stock under employee stock purchase plan	$ 2	345	0	0	$ 0	347
Equity compensation expense from awards issued	$ 0	496	0	0	$ 0	496
Issuance of stock upon vesting of restricted share awards (in shares)	179,762				0
Issuance of stock upon vesting of restricted share awards	$ 8	(8)	0	0	$ 0	$ 0
Purchase of treasury stock (in shares)	0				640,578	640,578
Purchase of treasury stock	$ 0	0	0	0	$ (8,184)	$ (8,184)
Foreign currency translation adjustment	0	0	54	0	0	54
Net income (loss)	$ 0	0	0	3,837	$ 0	3,837
Balance (in shares) at Apr. 01, 2023	17,500,800				8,643,227
Balance at Apr. 01, 2023	$ 873	$ 114,711	$ (2,809)	$ (32,259)	$ (52,004)	$ 28,512