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Revenue - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 28, 2021	Mar. 29, 2020
Disaggregation Of Revenue [Line Items]
Revenue recognized related to prior periods	$ 100,000	$ 100,000
Amount of revenue recognized	78,063,000	87,590,000
Aggregate value of remaining performance obligation on outstanding contracts	4,480,000
Revenue recognized related to prior periods	0	0
December 27, 2020 and December 31, 2019 Liability Ending Balance [Member]
Disaggregation Of Revenue [Line Items]
Amount of revenue recognized	600,000	500,000
Point in Time Sales [Member]
Disaggregation Of Revenue [Line Items]
Amount of revenue recognized	77,500,000	87,500,000
Over Time Sales [Member]
Disaggregation Of Revenue [Line Items]
Amount of revenue recognized	$ 100,000	$ 100,000

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+ References

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