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Summary of Significant Accounting Policies (Details 1)	12 Months Ended
	Dec. 30, 2017
Buildings and improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	39 years
Buildings and improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	50 years
Office furniture and equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Office furniture and equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Manufacturing and engineering equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	5 years
Manufacturing and engineering equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	10 years
Vehicles [Member]
Property, Plant and Equipment, Useful Life	5 years

X

- Definition

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.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
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X

- Details

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X

- Details

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X

- Details

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X

- Details

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Balance Type:
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X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix:
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Balance Type:
Period Type: