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 assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

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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 gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019	Sep. 29, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 136,287		$ 136,287		$ 149,904
Accumulated depreciation	(100,889)		(100,889)		(110,463)
Property and equipment, net	35,398		35,398		39,441
Depreciation expense related to property and equipment	3,700	$ 4,200	10,100	$ 12,700
Assets held-for-sale, current					5,400
Gain on sale of property and equipment	4,500		7,500
Equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	101,089		101,089		114,652
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	35,006		35,006		34,881
Land and buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 192		$ 192		$ 371