Accounting Policies and New Accounting Pronouncements (Tables)

12 Months Ended

Dec. 28, 2019

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Assets

The estimated service lives of our asset groups are as follows:

Asset Group	Years
Shop equipment	5 – 10
Furniture and fixtures	5 – 7
Computer equipment; Autos and trucks	3 – 5
Software	3 – 5