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Restructuring - Additional Information (Detail) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 27, 2020 USD ($)	Jun. 27, 2020 USD ($) Employee	Jun. 29, 2019 USD ($)	Dec. 28, 2019 USD ($)	Mar. 28, 2020 USD ($)
Restructuring Cost And Reserve [Line Items]
Percentage of reduction in headcount	27.00%
Number of majority employee | Employee		13
Expenses		$ 11,209	$ 6,331
Expenses, after tax		8,325	4,727
Anticipates recording additional expenses in connection with restructuring	$ 2,800	2,800
Payments for expenses		3,667		$ 5,077
Provisions				$ 83
Restructuring remaining liability	7,542	7,542
Revision in estimates	14,000	14,000			$ 12,000
Fiscal 2019
Restructuring Cost And Reserve [Line Items]
Payments for expenses		1,049
Provisions		76
Restructuring remaining liability	$ 46	46
Cost of Revenues
Restructuring Cost And Reserve [Line Items]
Expenses		6,503	1,425
Selling, General and Administrative Expenses
Restructuring Cost And Reserve [Line Items]
Expenses		$ 4,706	$ 4,906

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