Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 26, 2022	Mar. 27, 2021	Dec. 25, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 214,255		$ 213,911
Accumulated depreciation	(167,251)		(165,253)
Property, plant and equipment, net	47,004		48,658
Depreciation	1,999	$ 2,235
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,422		3,422
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	51,430		51,430
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	158,462		158,248
Assets under construction
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 941		$ 811

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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