Consolidated Statements of Changes in Stockholders' Equity - 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, Common [Member]	Total
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
Effect of excess tax deduction over book expense associated with exercise of equity awards	$ 0	0	20	0	0	$ 0	$ 20
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
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
Effect of excess tax deduction over book expense associated with exercise of equity awards	$ 0	0	206	0	0	$ 0	$ 206
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
Common stock issued for acquisition (in shares)	38,000					0
Common stock issued for acquisition	$ 2	0	630	0	0	$ 0	632
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
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
Issuance of stock under employee stock purchase plan (in shares)	66,501					0
Issuance of stock under employee stock purchase plan	$ 3	0	699	0	0	$ 0	702
Equity compensation expense from awards issued	$ 0	0	2,092	0	0	$ 0	2,092
Issuance of stock upon vesting of restricted share awards (in shares)	310,959					0
Issuance of stock upon vesting of restricted share awards	$ 16	0	(16)	0	0	$ 0	0
Effect of excess tax deduction over book expense associated with exercise of equity awards		0	(206)	0	0	$ 0	$ (206)
Purchase of treasury stock (in shares)	0					1,825,957	1,825,957
Purchase of treasury stock	$ 0	0	0	0	0	$ (25,773)	$ (25,773)
Foreign currency translation adjustment	0	0	0	50	0	0	50
Net income (loss)	$ 0	0	0	0	16,831	$ 0	16,831
Common stock issued for acquisition (in shares)	8,000					0
Common stock issued for acquisition	$ 0	0	132	0	0	$ 0	132
Issuance of stock under employee stock purchase plan (in shares)	66,501					0
Issuance of stock under employee stock purchase plan	$ 3	0	699	0	0	$ 0	702
Balance (in shares) at Dec. 30, 2023	17,673,427					9,828,606
Balance at Dec. 30, 2023	$ 882	$ 0	$ 116,579	$ (2,813)	$ (19,265)	$ (69,593)	$ 25,790