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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2022
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | 2. Property, Plant and Equipment Property, plant and equipment consisted of the following at December 31, 2022 and December 25, 2021: Schedule of Property Plant and Equipment
|  | Useful Life |  | 2022 |  |  | 2021 |
Equipment |  | 3-5 years |  | $ | 13,965,126 |  |  | $ | 15,099,035 |
Leasehold improvements |  | Life of the lease |  |  | 3,600,557 |  |  |  | 3,571,694 |
Furniture and fixtures |  | 3 years |  |  | 174,622 |  |  |  | 101,777 |
Equipment under construction |  |  |  |  | 550,219 |  |  |  | 233,237 |
Property, plant and equipment, gross |  |  |  |  | 18,290,524 |  |  |  | 19,005,743 |
Accumulated depreciation and amortization |  |  |  |  | (16,458,883 | ) |  |  | (17,116,780 | )
Property, plant and equipment, net |  |  |  | $ | 1,831,641 |  |  | $ | 1,888,963 |
Depreciation expense for the fiscal years 2022, 2021 and 2020 was approximately $0.7 million.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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