Acquisition and Disposal - Additional Information (Detail) - USD ($)			1 Months Ended	12 Months Ended
	Aug. 27, 2018	Aug. 03, 2018	Sep. 28, 2018	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Business Acquisition [Line Items]
Contingent consideration				$ 4,163,000
Revenues				1,096,523,000	$ 924,351,000	$ 562,759,000
Amortization of finite-lived intangibles				9,580,000	5,437,000	$ 5,758,000
Estimated fire damage					$ 1,000,000
Consideration received in connection with sale of subsidiary				$ 291,000
Quantum Global Technologies, LLC [Member]
Business Acquisition [Line Items]
Date of acquisition				Aug. 27, 2018
Total purchase consideration	$ 340,800,000
Contingent consideration	4,200,000
Business acquisition potential cash earn-out payments	15,000,000
Acquisition related costs				$ 10,000,000
Cash borrowed for acquisition and refinancing	350,000,000
Fair value of total assets acquired increased				500,000
Fair value of liabilities assumed increased				4,000,000
Fair value of noncontrolling interest increased				1,900,000
Revenues				81,000,000
Amortization of finite-lived intangibles				$ 5,200,000
Quantum Global Technologies, LLC [Member] | UAMC [Member]
Business Acquisition [Line Items]
Date of disposal		Aug. 03, 2018
Carry value of assets sold		$ 1,100,000
Loss on sale of business		(1,100,000)
Sale of subsidiary, description				On August 3, 2018, the Company sold its subsidiary, UAMC, for $0.3 million, in the form of note receivable from the purchaser. UAMC was launched in November 2004 to develop additive, 3D printing manufacturing capabilities. At closing, the carry value of the UAMC assets sold were $1.1 million. The Company also included free rent, labor and utilities for a period of six months as part of the agreement. The Company believes that the assets related to UAMC that were sold include all key inputs and processes necessary to generate output, and, accordingly, the Company has determined that UAMC qualified as a business. As a result of the sale, the Company recognized a loss on sale of a business of $1.1 million in the accompanying Condensed Consolidated Statements of Operations recorded in Interest and other income (expense), net
Quantum Global Technologies, LLC [Member] | UAMC [Member] | Note Receivable [Member]
Business Acquisition [Line Items]
Consideration received in connection with sale of subsidiary		$ 300,000
Quantum Global Technologies, LLC [Member] | Quantum Facility Fire [Member]
Business Acquisition [Line Items]
Business interruption insurance policy limit			$ 2,000,000
Accrued insurance settlements				$ 1,000,000
Quantum Global Technologies, LLC [Member] | Quantum Facility Fire [Member] | Fire Damage [Member]
Business Acquisition [Line Items]
Estimated fire damage			5,900,000
Net loss from fire’s damage			$ 0
Quantum Global Technologies, LLC [Member] | Post-closing Working Capital Adjustments [Member]
Business Acquisition [Line Items]
Esrow security	2,300,000
Quantum Global Technologies, LLC [Member] | Indemnification Obligations [Member]
Business Acquisition [Line Items]
Esrow security	3,400,000
Quantum Global Technologies, LLC [Member] | General and Administrative [Member]
Business Acquisition [Line Items]
Acquisition related costs	$ 10,000,000			$ 10,000,000