Strategic Corporate Reorganization for Long-term Growth (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 28, 2021 USD ($)	Mar. 28, 2021 USD ($)	Dec. 26, 2021 USD ($)	Sep. 17, 2020 ft²
New Corporate Headquarters
Square footage of new leased facilities | ft²				60,000
Restructuring costs		$ 9,900
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 4,861
Charges	3,883
Payments	(5,304)
Restructuring reserve, ending balance	3,440	3,440
Employee severance and other employee transition costs
New Corporate Headquarters
Restructuring costs		6,800
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	4,615
Charges	2,037
Payments	(3,847)
Restructuring reserve, ending balance	2,805	2,805
Relocation costs
New Corporate Headquarters
Restructuring costs		800
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	101
Charges	546
Payments	(133)
Restructuring reserve, ending balance	514	514
Recruiting and professional fees
New Corporate Headquarters
Restructuring costs		2,500
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	145
Charges	860
Payments	(884)
Restructuring reserve, ending balance	121	121
Other costs
New Corporate Headquarters
Restructuring costs		700
Restructuring Reserve [Roll Forward]
Charges	440
Payments	$ (440)
Stock-based compensation benefit
New Corporate Headquarters
Restructuring costs		$ (900)
Forecast | Minimum
New Corporate Headquarters
Reorganizational expected costs			$ 5,000
Forecast | Maximum
New Corporate Headquarters
Reorganizational expected costs			10,000
Forecast | Employee severance and other employee transition costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			2,000
Forecast | Employee severance and other employee transition costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			3,000
Forecast | Relocation and recruiting costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			2,000
Forecast | Relocation and recruiting costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			5,000
Forecast | Other costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			1,000
Forecast | Other costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			2,000
Forecast | One-time corporate reorganization costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			15,000
Forecast | One-time corporate reorganization costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			$ 20,000