Revenue - Additional Information (Detail)	3 Months Ended
Mar. 28, 2020 USD ($) Installment
Revenue From Contract With Customers [Line Items]
Revenue remaining performance obligation	$ 87,200,000
TFE
Revenue From Contract With Customers [Line Items]
Revenue remaining performance obligation	$ 22,400,000
TFE \| Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Number of installments \| Installment	3
Change in contract assets	$ (760,000)
TFE \| Customer Advances
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	155,000
TFE \| Deferred Revenue
Revenue From Contract With Customers [Line Items]
Contract with customer liability revenue recognized	21,000
Photonics
Revenue From Contract With Customers [Line Items]
Change in contract assets	2,981,000
Revenue remaining performance obligation	64,800,000
Photonics \| Accounts Receivable, Unbilled
Revenue From Contract With Customers [Line Items]
Change in contract assets	$ 2,977,000

Notes receivable number of installments.

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- Definition

Revenue From Contract With Customers.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045

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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045

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