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Note 3
 6 Months Ended
Mar. 27, 2021
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
Note 3 

Depreciation of equipment and buildings is provided for by the straight-line method over the assets’ estimated useful lives. Amortization of improvements is provided for by the straight-line method over the term of the lease or the assets’ estimated useful lives, whichever is shorter. Licenses and rights, customer relationships and non-compete agreements arising from acquisitions are amortized by the straight-line method over periods ranging from 2 to 20 years. Depreciation expense was $11,984,000 and $12,923,000 for the three months ended March 27, 2021 and March 28, 2020, respectively and $24,253,000 and $24,810,000 for the six months ended March 27, 2021 and March 28, 2020, respectively.