FEDERAL AND STATE INCOME TAXES (Details 2) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
FEDERAL AND STATE INCOME TAXES
Federal and state net operating loss carryforward	$ 13,770	$ 12,006
Tax credit carryforwards	1,977	1,977
Allowance for uncollectible accounts	986	491
Accruals not yet deductible for tax purposes	448	548
Goodwill	112	177
Capitalized research & development expenses	1,748	1,086
Depreciation	8	0
Lease payable	1,696	1,897
Total noncurrent deferred tax assets	20,745	18,182
Less: valuation allowance	(19,442)	(16,166)
Depreciation	0	(10)
Total noncurrent deferred tax assets, net	1,303	2,016
Other	108	116
Right to use asset	1,195	1,890
Total noncurrent deferred tax liabilities	(1,303)	(2,016)
Net deferred tax assets/deferred tax liabilities	$ 0	$ 0