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Accounting Policies (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Jan. 01, 2022 | Jan. 02, 2021
Cash Equivalents |  |
Amount of deposits insured by Federal Deposit Insurance Corporation (FDIC) | $ 250,000 |
Accounts receivable, allowance for doubtful accounts | 515,000 | $ 487,000
Bad debt expense | 48,000 | 253,000
Revenue recognized employing the percentage of completion method | 795,000 | 505,000
Sales returns | 395,000 | $ 374,000
Percentage of available cash located in foreign subsidiaries |  | 38.00%
Inventories |  |
LIFO inventory amount | 23,400,000 |
FIFO inventory amount | 4,500,000 |
Amortization expense | 3,985,179 | $ 3,607,577
Excess of current cost over LIFO carrying value | 3,600,000 | 2,900,000
Lease expense 2022 | 2,664,761 |
Lease expense 2023 | 2,186,238 |
Lease expense 2024 | 1,700,834 |
Lease expense 2025 | 1,081,468 |
Lease expense 2026 | 805,722 |
Lease expense thereafter | $ 2,865,077 |
weighted average discount rate | 5.00% |
Weighted average remaining lease term | 6 years 4 months 24 days |
Depreciation | $ 3,255,894 | 3,208,206
Product development expenses | 4,101,399 | 2,749,333
Impairment of goodwill |  | 972,823
Lease liability | 8,639,339 | 9,806,173
Lease [Member] |  |
Inventories |  |
Lease liability | 11,300,000 |
Eberhard Hardware Manufacturing Ltd [Member] |  |
Inventories |  |
Impairment of goodwill | $ 1,000,000.0 |
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] | 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 |
Maximum [Member] | Technology And Licenses [Member] |  |
Inventories |  |
Useful lives of intangible assets | 17 years |
Product Development Costs [Member] |  |
Inventories |  |
Product development expenses | $ 4,101,399 | 2,749,333
Advertising [Member] |  |
Inventories |  |
Advertising costs | $ 200,482 | $ 278,392

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