Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Stock Subscriptions Receivable [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 28, 2019	15,826,891					2,823,172
Balance at Dec. 28, 2019	$ 791	$ 0	$ 108,452	$ (2,748)	$ (59,105)	$ (14,987)	$ 32,403
Issuance of stock under employee stock purchase plan (in shares)	117,983					0
Issuance of stock under employee stock purchase plan	$ 6	0	202	0	0	$ 0	208
Stock subscription receivable (in shares)	0					0
Stock subscription receivable	$ 0	(420)	420	0	0	$ 0	0
Equity compensation expense from awards issued	$ 0	0	528	0	0	$ 0	528
Issuance of stock upon vesting of restricted share awards (in shares)	279,317					0
Issuance of stock upon vesting of restricted share awards	$ 14	0	(14)	0	0	$ 0	0
Issuance of stock upon vesting of restricted share awards	$ 14	0	(14)	0	0	$ 0	$ 0
Issuance of stock upon vesting of restricted share awards (in shares)	279,317					0
Purchase of treasury stock (in shares)	0					1,858,139	1,858,139
Purchase of treasury stock	$ 0	0	0	0	0	$ (2,230)	$ (2,230)
Foreign currency translation adjustment	0	0	0	198	0	0	198
Net income (loss)	$ 0	0	0	0	(8,869)	$ 0	(8,869)
Issuance of stock under employee stock purchase plan (in shares)	117,983					0
Issuance of stock under employee stock purchase plan	$ 6	0	202	0	0	$ 0	208
Balance (in shares) at Jan. 02, 2021	16,224,191					4,681,311
Balance at Jan. 02, 2021	$ 811	(420)	109,588	(2,550)	(67,974)	$ (17,217)	22,238
Issuance of stock under employee stock purchase plan (in shares)	101,784					0
Issuance of stock under employee stock purchase plan	$ 5	0	131	0	0	$ 0	136
Stock subscription receivable (in shares)	250,000					0
Stock subscription receivable	$ 13	420	(13)	0	0	$ 0	420
Equity compensation expense from awards issued	$ 0	0	1,358	0	0	$ 0	1,358
Issuance of stock upon vesting of restricted share awards (in shares)	327,182					0
Issuance of stock upon vesting of restricted share awards	$ 16	0	(16)	0	0	$ 0	0
Issuance of stock upon vesting of restricted share awards	$ 16	0	(16)	0	0	$ 0	$ 0
Issuance of stock upon vesting of restricted share awards (in shares)	327,182					0
Purchase of treasury stock (in shares)	0					1,930,911	1,930,911
Purchase of treasury stock	$ 0	0	0	0	0	$ (9,043)	$ (9,043)
Foreign currency translation adjustment	0	0	0	(149)	0	0	(149)
Net income (loss)	0	0	0	0	10,989	0	10,989
Effect of excess tax deduction over book expense associated with exercise of equity awards	$ 0	0	20	0	0	$ 0	20
Issuance of stock under employee stock purchase plan (in shares)	101,784					0
Issuance of stock under employee stock purchase plan	$ 5	0	131	0	0	$ 0	136
Balance (in shares) at Jan. 01, 2022	16,903,157					6,612,222
Balance at Jan. 01, 2022	$ 845	0	111,068	(2,699)	(56,985)	$ (26,260)	25,969
Issuance of stock under employee stock purchase plan (in shares)	83,879					0
Issuance of stock under employee stock purchase plan	$ 4	0	404	0	0	$ 0	408
Equity compensation expense from awards issued	$ 0	0	1,582	0	0	$ 0	1,582
Issuance of stock upon vesting of restricted share awards (in shares)	262,931					0
Issuance of stock upon vesting of restricted share awards	$ 12	0	(12)	0	0	$ 0	0
Issuance of stock upon vesting of restricted share awards	$ 12	0	(12)	0	0	$ 0	$ 0
Issuance of stock upon vesting of restricted share awards (in shares)	262,931					0
Purchase of treasury stock (in shares)	0					1,390,427	1,309,427
Purchase of treasury stock	$ 0	0	0	0	0	$ (17,560)	$ (17,560)
Foreign currency translation adjustment	0	0	0	(164)	0	0	(164)
Net income (loss)	0	0	0	0	20,889	0	20,889
Effect of excess tax deduction over book expense associated with exercise of equity awards	$ 0	0	206	0	0	$ 0	206
Issuance of stock under employee stock purchase plan (in shares)	83,879					0
Issuance of stock under employee stock purchase plan	$ 4	0	404	0	0	$ 0	408
Common stock issued for acquisition (in shares)	38,000					0
Common stock issued for acquisition	$ 2	0	630	0	0	$ 0	632
Balance (in shares) at Dec. 31, 2022	17,287,967					8,002,649
Balance at Dec. 31, 2022	$ 863	$ 0	$ 113,878	$ (2,863)	$ (36,096)	$ (43,820)	$ 31,962