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Nature of Operations and Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 170,697	$ 165,231
Less: Accumulated Depreciation and Amortization	90,540	85,508
Property, Plant and Equipment, at Cost, Net	80,157	79,723
Amortization of assets under capital leases	9,386	7,418	$ 6,194
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	7,614	7,894
Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	58,866	48,094
Machinery, Equipment, and Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	100,453	94,779
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,764	14,464
Assets Held under Capital Leases
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	5,674	6,038
Less: Accumulated Depreciation and Amortization	$ 764	$ 550
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of expense for allocation of cost of tangible and intangible assets over their useful lives directly used in production of good and rendering of service.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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