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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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Revenue - Additional Information (Details)	12 Months Ended
Revenue - Additional Information (Details)	Jan. 02, 2022 USD ($)	Jan. 03, 2021 USD ($) Agreement Award	Dec. 29, 2019 USD ($)	Apr. 16, 2021 USD ($)
Disaggregation Of Revenue [Line Items]
Deferred revenue, current	$ 34,500,000	$ 35,500,000
Contract asset	48,100,000	42,800,000
Other current assets	139,400,000	127,000,000.0
Other Assets	98,200,000	107,500,000
Deferred revenue, revenue recognized	33,000,000.0	$ 35,100,000	$ 25,800,000
Number of collaboration and license agreements \| Agreement		2
Award Received In Connection With Arbitration Proceeding	8,500,000
Revenue recognized	31,400,000	$ 28,800,000	$ 23,900,000
Credit losses related to contract assets	0	0
Other Noncurrent Assets
Disaggregation Of Revenue [Line Items]
Contract asset	1,000,000.0	2,400,000
Other Current Assets
Disaggregation Of Revenue [Line Items]
Contract asset	47,200,000	40,400,000
Other Noncurrent Liabilities
Disaggregation Of Revenue [Line Items]
Deferred revenue, non-current	5,600,000	$ 6,600,000
Biomedical Advanced Research And Development Authority [Member]
Disaggregation Of Revenue [Line Items]
Number of awards under collaboration and license agreements \| Award		2
Biomedical Advanced Research And Development Authority [Member] \| Grant
Disaggregation Of Revenue [Line Items]
Revenue recognized	9,600,000	$ 5,800,000
Biomedical Advanced Research And Development Authority [Member] \| Maximum
Disaggregation Of Revenue [Line Items]
Potential payment receivable for development and submission of emergency use authorizations and 510(k) applications of COVID-19 tests		13,600,000		$ 3,600,000
Customer Supply Agreement
Disaggregation Of Revenue [Line Items]
Contract asset	12,400,000	15,100,000
Other current assets	11,500,000	12,700,000
Customer Supply Agreement \| Other Noncurrent Assets
Disaggregation Of Revenue [Line Items]
Other Assets	1,000,000.0	2,400,000
Contractual Arrangements
Disaggregation Of Revenue [Line Items]
Contract asset	$ 35,700,000	24,300,000
Contract Manufacturing Agreements
Disaggregation Of Revenue [Line Items]
Contract asset		$ 3,400,000