ACCOUNTING POLICIES (Details Narrative) - USD ($)	12 Months Ended
Jan. 02, 2021	Dec. 28, 2019
Cash Equivalents
Amount of deposits insured by Federal Deposit Insurance Corporation (FDIC)	$ 250,000
Accounts receivable, allowance for doubtful accounts	$ 545,000	$ 556,000
Accounts receivable, customers due period	30 years
Bad debt expense	$ 253,000	64,000
Revenue recognized employing the percentage of completion method	505,000	576,000
Sales returns	$ 459,000	613,000
Percentage of available cash located in foreign subsidiaries	38.00%
Inventories
LIFO inventory amount	$ 27,900,000
FIFO inventory amount	5,800,000
Amortization expense	3,634,378	1,726,539
Excess of current cost over LIFO carrying value	6,800,000	6,700,000
Lease expense 2021	2,923,761
Lease expense 2022	2,262,399
Lease expense 2023	1,872,491
Lease expense 2024	1,481,832
Lease expense 2025	844,884
Lease expense thereafter	$ 3,421,563
Weighted average remaining lease term	6 years 9 months 18 days
Depreciation	$ 4,843,134	4,722,758
Product development expenses	3,131,035	6,024,567
Impairment of goodwill	4,975,372	0
Lease liability	9,883,168	9,376,903
Lease [Member]
Inventories
Lease liability	12,800,000
Greenwald Industries [Member]
Inventories
Impairment of goodwill	1,000,000.0
Subscription services revenue	441,000	567,000
Eberhard Hardware Manufacturing Ltd [Member]
Inventories
Impairment of goodwill	$ 4,000,000.0
Non-compete agreements [Member]
Inventories
Useful lives of intangible assets	5 years
Minimum [Member] \| Building [Member]
Inventories
Estimated useful lives of the assets	10 years
Minimum [Member] \| Machinery and Equipment [Member]
Inventories
Estimated useful lives of the assets	3 years
Minimum [Member] \| Technology And Licenses [Member]
Inventories
Useful lives of intangible assets	5 years
Maximum [Member]
Inventories
Useful lives of intangible assets	17 years
Maximum [Member] \| Building [Member]
Inventories
Estimated useful lives of the assets	39 years 6 months
Maximum [Member] \| Machinery and Equipment [Member]
Inventories
Estimated useful lives of the assets	10 years
Leases [Member] \| Minimum [Member]
Inventories
Interest rate on leases	3.50%
Leases [Member] \| Maximum [Member]
Inventories
Interest rate on leases	5.00%
Advertising [Member]
Inventories
Advertising costs	$ 303,060	462,911
Product Development Costs [Member]
Inventories
Product development expenses	$ 3,131,035	$ 6,024,567

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