Strategic Corporate Reorganization for Long-term Growth (Details) $ in Thousands	6 Months Ended	9 Months Ended
	Jun. 27, 2021 USD ($)	Jun. 27, 2021 USD ($)	Dec. 26, 2021 USD ($)	Sep. 17, 2020 ft²
New Corporate Headquarters
Square footage of new leased facilities | ft²				60,000
Restructuring costs		$ 13,200
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 4,861
Charges	7,211
Payments	(9,326)
Restructuring reserve, ending balance	2,746	2,746
Employee severance and other employee transition costs
New Corporate Headquarters
Restructuring costs		8,100
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	4,615
Charges	3,291
Payments	(6,258)
Restructuring reserve, ending balance	1,648	1,648
Recruiting and professional fees
New Corporate Headquarters
Restructuring costs		3,300
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	145
Charges	1,671
Payments	(1,612)
Restructuring reserve, ending balance	204	204
Relocation costs
New Corporate Headquarters
Restructuring costs		1,800
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	101
Charges	1,559
Payments	(766)
Restructuring reserve, ending balance	894	894
Other costs
New Corporate Headquarters
Restructuring costs		900
Restructuring Reserve [Roll Forward]
Charges	690
Payments	$ (690)
Stock-based compensation benefit
New Corporate Headquarters
Restructuring costs		$ (900)
Forecast | Minimum
New Corporate Headquarters
Reorganizational expected costs			$ 4,000
Forecast | Maximum
New Corporate Headquarters
Reorganizational expected costs			7,000
Forecast | Employee severance and other employee transition costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			100
Forecast | Employee severance and other employee transition costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			500
Forecast | Relocation and recruiting costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			3,700
Forecast | Relocation and recruiting costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			5,500
Forecast | Other costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			200
Forecast | Other costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			1,000
Forecast | One-time corporate reorganization costs | Minimum
New Corporate Headquarters
Reorganizational expected costs			17,000
Forecast | One-time corporate reorganization costs | Maximum
New Corporate Headquarters
Reorganizational expected costs			$ 20,000