TTM (TTMI) 10-Q 5 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 29, 2021	May 03, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 29, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Trading Symbol	TTMI
Entity Registrant Name	TTM TECHNOLOGIES, INC.
Entity Central Index Key	0001116942
Current Fiscal Year End Date	--01-03
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		107,189,462
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity File Number	0-31285
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	91-1033443
Entity Address, Address Line One	200 East Sandpointe
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Santa Ana
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92707
City Area Code	714
Local Phone Number	327-3000
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ
Document Quarterly Report	true
Document Transition Report	false

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Current assets:
Cash and cash equivalents	$ 539,648	$ 451,565
Accounts receivable, net	366,768	381,105
Contract assets	271,702	273,256
Inventories	121,124	115,651
Prepaid expenses and other current assets	33,397	27,181
Total current assets	1,332,639	1,248,758
Property, plant and equipment, net	651,194	650,435
Operating lease right-of-use assets	21,383	24,340
Goodwill	637,324	637,324
Definite-lived intangibles, net	270,402	281,307
Deposits and other non-current assets	52,886	53,780
Total assets	2,965,828	2,895,944
Current liabilities:
Accounts payable	336,739	327,102
Contract liabilities	3,486	4,254
Accrued salaries, wages and benefits	82,201	97,268
Other current liabilities	86,728	89,422
Total current liabilities	509,154	518,046
Long-term debt, net of discount and issuance costs	926,128	842,853
Operating lease liabilities	15,658	17,211
Other long-term liabilities	72,421	73,825
Total long-term liabilities	1,014,207	933,889
Commitments and contingencies (Note 14)
Equity:
Common stock, $0.001 par value; 300,000 shares authorized, 107,113 and 106,770 shares issued and outstanding as of March 29, 2021 and December 28, 2020, respectively	107	107
Additional paid-in capital	830,835	830,971
Retained earnings	648,652	651,844
Accumulated other comprehensive loss	(37,127)	(38,913)
Total stockholders’ equity	1,442,467	1,444,009
Total liabilities and stockholders' equity	$ 2,965,828	$ 2,895,944

Consolidated Condensed Balanc_2

Consolidated Condensed Balance Sheets (Parenthetical) - $ / shares	Mar. 29, 2021	Dec. 28, 2020
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	107,113,000	106,770,000
Common stock, shares outstanding	107,113,000	106,770,000

Consolidated Condensed Statemen

Consolidated Condensed Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Income Statement [Abstract]
Net sales	$ 526,432	$ 497,646
Cost of goods sold	444,832	416,304
Gross profit	81,600	81,342
Operating expenses:
Selling and marketing	16,282	16,169
General and administrative	31,527	34,667
Research and development	4,470	4,762
Amortization of definite-lived intangibles	9,521	9,562
Total operating expenses	61,800	65,160
Operating income	19,800	16,182
Other (expense) income:
Interest expense	(11,389)	(19,781)
Loss on extinguishment of debt	(15,217)
Other, net	2,507	2,502
Total other expense, net	(24,099)	(17,279)
Loss from continuing operations before income taxes	(4,299)	(1,097)
Income tax benefit (provision)	1,107	(2,123)
Net loss from continuing operations	(3,192)	(3,220)
Income from discontinued operations, net of income taxes		2,046
Net loss	$ (3,192)	$ (1,174)
(Loss) earnings per share:
Basic loss per share from continuing operations	$ (0.03)	$ (0.03)
Basic earnings per share from discontinued operations		0.02
Basic loss per share	(0.03)	(0.01)
Diluted loss per share from continuing operations	(0.03)	(0.03)
Diluted earnings per share from discontinued operations		0.02
Diluted loss per share	$ (0.03)	$ (0.01)

Consolidated Condensed Statem_2

Consolidated Condensed Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (3,192)	$ (1,174)
Other comprehensive income (loss), net of tax:
Pension obligation adjustments, net		27
Foreign currency translation adjustments, net	(3)	(367)
Net unrealized losses on cash flow hedges:
Unrealized loss on effective cash flow hedges during the period, net	(263)	(6,018)
Loss realized in the statement of operations, net	2,052	860
Net	1,789	(5,158)
Other comprehensive income (loss), net of tax	1,786	(5,498)
Comprehensive loss, net of tax	$ (1,406)	$ (6,672)

Consolidated Condensed Statem_3

Consolidated Condensed Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 30, 2019	$ 1,279,037	$ 106	$ 814,708	$ 474,309	$ (10,086)
Beginning balance (in shares) at Dec. 30, 2019		105,510
Net loss	(1,174)			(1,174)
Other comprehensive income (loss)	(5,498)				(5,498)
Issuance of common stock for performance-based restricted stock units (in shares)		187
Issuance of common stock for restricted stock units (in shares)		520
Stock-based compensation	4,835		4,835
Ending balance at Mar. 30, 2020	1,277,200	$ 106	819,543	473,135	(15,584)
Ending balance (in shares) at Mar. 30, 2020		106,217
Beginning balance at Dec. 28, 2020	1,444,009	$ 107	830,971	651,844	(38,913)
Beginning balance (in shares) at Dec. 28, 2020		106,770
Net loss	(3,192)			(3,192)
Other comprehensive income (loss)	1,786				1,786
Issuance of common stock for performance-based restricted stock units (in shares)		135
Issuance of common stock for restricted stock units (in shares)		203
Fair value of warrants reclassified to warrant liabilities	(4,345)		(4,345)
Issuance of common stock from warrant exercises (in shares)		5
Stock-based compensation	4,209		4,209
Ending balance at Mar. 29, 2021	$ 1,442,467	$ 107	$ 830,835	$ 648,652	$ (37,127)
Ending balance (in shares) at Mar. 29, 2021		107,113

Consolidated Condensed Statem_4

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Cash flows from operating activities:
Net loss	$ (3,192)	$ (1,174)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	21,476	42,632
Amortization of definite-lived intangible assets	10,905	11,620
Amortization of debt discount and issuance costs	537	3,552
Loss on extinguishment of debt	15,217
Deferred income taxes	683	(353)
Stock-based compensation	4,209	4,835
Other	(534)	876
Changes in operating assets and liabilities:
Accounts receivable, net	14,337	45,019
Contract assets	1,554	1,572
Inventories	(5,473)	(7,573)
Prepaid expenses and other current assets	(6,495)	(5,959)
Accounts payable	10,885	(52,791)
Contract liabilities	(768)	(262)
Accrued salaries, wages and benefits	(15,067)	(16,382)
Other current liabilities	(7,129)	2,301
Net cash provided by operating activities	41,145	27,913
Cash flows from investing activities:
Refundable deposit related to sale of the Mobility business unit		35,342
Purchase of property, plant and equipment and other assets	(21,797)	(32,451)
Proceeds from sale of property, plant and equipment and other assets	831
Net cash (used in) provided by investing activities	(20,966)	2,891
Cash flows from financing activities:
Proceeds from long-term debt borrowing	500,000
Repayment of long-term debt borrowings	(425,838)
Payment of debt issuance costs	(4,773)
Other	(1,309)
Net cash provided by financing activities	68,080
Effect of foreign currency exchange rates on cash and cash equivalents	(176)	(521)
Net increase in cash and cash equivalents	88,083	30,283
Cash and cash equivalents at beginning of period	451,565	400,154
Cash and cash equivalents at end of period	539,648	430,437
Cash and cash equivalents in assets held for sale		(68,445)
Cash and cash equivalents as presented on the consolidated condensed balance sheet	539,648	361,992
Supplemental cash flow information:
Cash paid, net for interest	15,244	10,455
Cash paid, net for income taxes	713	4,367
Net cash provided by operating activities from discontinued operations		21,286
Net cash provided by investing activities from discontinued operations		26,823
Supplemental disclosure of noncash investing and financing activities:
Property, plant and equipment recorded in accounts payable	28,960	46,784
Issuance of common stock for warrant settlement	$ 68
Supplemental disclosure of noncash investing activities from discontinued operations:
Property, plant and equipment recorded in accounts payable		$ 6,673

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	3 Months Ended
	Mar. 29, 2021
Accounting Policies [Abstract]
Nature of Operations and Basis of Presentation	(1) Nature of Operations and Basis of Presentation TTM Technologies, Inc. (the Company or TTM) is a leading global printed circuit board (PCB) manufacturer, focusing on quick-turn and volume production of technologically advanced PCBs and backplane assemblies as well as a global designer and manufacturer of high-frequency radio frequency (RF) and microwave components and assemblies. The Company provides time-to-market and volume production of advanced technology products and offers a one-stop design, engineering and manufacturing solution to customers. This one-stop design, engineering and manufacturing solution allows the Company to align technology developments with the diverse needs of the Company’s customers and to enable them to reduce the time required to develop new products and bring them to market. The Company serves a diversified customer base in various markets throughout the world, including aerospace and defense, data center computing, automotive components, medical, industrial and instrumentation related products, as well as networking/communications infrastructure products. The Company’s customers include both original equipment manufacturers (OEMs) and electronic manufacturing services (EMS) providers. The accompanying consolidated condensed financial statements have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) have been condensed or omitted pursuant to such rules and regulations. It is suggested that these consolidated condensed financial statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s most recent Annual Report on Form 10-K. The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Company’s consolidated condensed financial statements and accompanying notes. Due to the coronavirus (COVID-19) global pandemic, the global economy and financial markets have been disrupted and there is a significant amount of uncertainty about the length and severity of the consequences caused by the pandemic. The Company has considered information available to it as of the date of issuance of these financial statements and is not aware of any specific events or circumstances that would require an update to its estimates or judgments, or a revision to the carrying value of its assets or liabilities. Actual results could differ materially from those estimates. The Company uses a 13-week fiscal quarter accounting period with the fourth quarter ending on the Monday nearest December 31. On January 19, 2020, the Company entered into a definitive equity interests purchase agreement with AKMMeadville Electronics (Xiamen) Co., Ltd (the Purchaser) for the sale of the Company’s following subsidiaries, which was completed on April 17, 2020: Shanghai Kaiser Electronics Co., Ltd. (SKE), Shanghai Meadville Electronics Co., Ltd. (SME), Shanghai Meadville Science & Technology Co., Ltd. (SP) and Guangzhou Meadville Electronics Co., Ltd. (GME) (collectively, the Mobility business unit). For all periods presented in the consolidated condensed statements of operations, all sales, costs, expenses, income taxes and gain on sale attributable to the Mobility business unit have been aggregated under the caption “Income (loss) from discontinued operations, net of income taxes”. Refer to Note 2, Discontinued Operations Unless otherwise noted, amounts and disclosures throughout these notes to consolidated condensed financial statements relate to continuing operations. These consolidated condensed financial statements reflect all adjustments (consisting only of normal recurring adjustments) which, in the opinion of management, are necessary to present fairly the financial position, the results of operations and cash flows of the Company for the periods presented. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year. Reclassifications The Company currently has two reportable segments: PCB and RF and Specialty Components (RF&S Components). In fiscal 2020, subsequent to the quarter ended March 30, 2020, RF&S Components was added as a reportable segment. As a result, the Company had three reportable segments as of December 28, 2020: PCB, RF&S Components, and E-M Solutions. On April 29, 2020, the Company announced the restructuring of its E-M Solutions business unit. In prior periods, the Company’s E-M Solutions business unit consisted of three Chinese manufacturing facilities with two being in Shanghai (SH BPA and SH E-MS) and one in Shenzhen (SZ). The Company closed the SH E-MS and SZ facilities at the end of 2020 and integrated the SH BPA facility into its PCB operations. As of March 29, 2021, E-M Solutions no longer meets the criteria for segment reporting. As a result of the addition of the RF&S Components reportable segment and the restructuring of the E-M Solutions business unit, certain prior year amounts have been reclassified to conform to this new presentation. Recently Adopted and Issued Accounting Standards Recently Adopted Accounting Standards In December 2019, the Financial Accounting Standards Board (FASB) issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU as of December 29, 2020 and it did not have a material impact on its consolidated condensed financial statements and related disclosures.

Discontinued Operations

Discontinued Operations	3 Months Ended
	Mar. 29, 2021
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	(2) Discontinued Operations On January 19, 2020, the Company entered into a definitive equity interests purchase agreement for the sale of the Company’s Mobility business unit. The sale was completed on April 17, 2020 for a base purchase price of $550,000, subject to customary purchase price adjustments. The base purchase price does not include certain accounts receivable of the divested business, which were estimated to total approximately $95,000. Subsequently, the final purchase price was $569,246 after customary purchase price adjustments, which did not include approximately $83,000 accounts receivable of the divested business. On April 18, 2020, the Company entered into a Transition Services Agreement (TSA) with the Purchaser pursuant to which the Purchaser is receiving certain services (the Services) to enable it to operate the Mobility business unit after the closing of the sale of the Mobility business unit. The Services include finance and accounting, human resources, legal and compliance, sales, information technology, and other corporate support services. Under the TSA, the Services are being provided at cost for a period of up to 24 months. In addition, the Company entered into a Manufacturing Supply Agreement with the Purchaser pursuant to which the Purchaser will supply products to a few customers of the Company. There was no material impact on the Company’s consolidated condensed financial statements. Further, on June 29, 2020, the Company entered into a Sales Force Agreement with the Purchaser pursuant to which the Company’s sales representatives assist the Purchaser in selling PCBs manufactured by the Purchaser to certain customers for a commission for a period up to April 17, 2021. There was no material impact on the Company’s consolidated condensed financial statements. As the sale of the Company’s Mobility business unit represents a strategic shift that will have a major effect on the Company’s operations and financial results, in accordance with the provisions of FASB authoritative guidance on the presentation of financial statements, Mobility business unit results are classified as discontinued operations in the consolidated condensed statements of operations for all periods presented. The following table summarizes the results of Mobility operations for the quarter ended March 30, 2020 prior to sale: Quarter Ended March 30, 2020 (In thousands) Net sales $ 113,174 Cost of goods sold 108,425 Gross profit 4,749 Operating expenses: Selling and marketing 1,176 General and administrative 1,310 Research and development 147 Amortization of definite-lived intangibles 675 Total operating expenses 3,308 Operating income 1,441 Other (expense) income: Interest expense (223 ) Other, net 1,571 Total other income, net 1,348 Income from discontinued operations before income taxes 2,789 Income tax provision (743 ) Income from discontinued operations, net of income taxes $ 2,046 Earnings per share from discontinued operations: Basic earnings per share $ 0.02 Diluted earnings per share $ 0.02 Depreciation expense related to the discontinued operations for the quarter ended March 30, 2020 was $18,265.

Leases

Leases	3 Months Ended
	Mar. 29, 2021
Leases [Abstract]
Leases	(3) Leases The Company leases some of its manufacturing and assembly plants, sales offices and equipment under non-cancellable operating leases that expire at various dates through 2049. The majority of the Company’s lease arrangements are comprised of fixed payments and certain leases consist of variable payments based on equipment usage. These variable payments are not included in the measurement of the right-of-use (ROU) asset or lease liability due to uncertainty of the payment amount and are recorded as lease expense in the period incurred. Certain leases contain renewal provisions at the Company’s option. Most of the leases require the Company to pay for certain other costs such as property taxes and maintenance. Certain leases also contain rent escalation clauses (step rents) that require additional rental amounts in the later years of the term. Rent expense for leases with step rents is recognized on a straight-line basis over the minimum lease term. The lease agreements do not contain any material residual value guarantees or material restrictive covenants. The components of lease expense were as follows: Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Operating lease cost $ 2,208 $ 2,481 Variable lease cost 234 106 Short-term lease cost 54 229 Supplemental cash flow information related to leases was as follows: Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 2,159 $ 2,171 Right-of-use assets obtained in exchange for new lease obligations: Operating leases 284 1,876 Supplemental balance sheet information related to leases was as follows: As of March 29, 2021 December 28, 2020 (In thousands) Operating lease right-of-use assets $ 21,383 $ 24,340 Other current liabilities 6,609 8,144 Operating lease liabilities 15,658 17,211 Total operating lease liabilities $ 22,267 $ 25,355 As of March 29, 2021 December 28, 2020 Weighted average remaining lease term 4.4 years 4.2 years Weighted average discount rate 3.29 % 3.31 % Maturities of operating lease liabilities were as follows (1) (In thousands) Less than one year $ 7,214 1 - 2 years 5,015 2 - 3 years 4,309 3 - 4 years 3,370 4 - 5 years 2,123 Thereafter 1,902 Total lease payments 23,933 Less imputed interest (1,666 ) Total $ 22,267 (1) Excludes $851 of legally binding

Revenues

Revenues	3 Months Ended
	Mar. 29, 2021
Revenue From Contract With Customer [Abstract]
Revenues	(4) Revenues As of March 29, 2021, the aggregate amount of the transaction price allocated to remaining performance obligations for long-term contracts was $12,850. The Company expects to recognize revenue on approximately 100% of the remaining performance obligations for the Company’s long-term contracts over the next twelve months. Revenue from products and services transferred to customers over time and at a point in time accounted for 98% and 2%, respectively, of the Company’s revenue for the both the quarters ended March 29, 2021 and March 30, 2020. The following tables represent a disaggregation of revenue by principal end markets with the reportable segments: Quarter Ended March 29, 2021 PCB RF&S Components Other (1) Total End Markets (In thousands) Aerospace and Defense $ 186,539 $ 6 $ — $ 186,545 Automotive 91,792 — 3,642 95,434 Data Center Computing (2) 71,759 432 — 72,191 Medical/Industrial/Instrumentation 90,770 1,081 25 91,876 Networking/Communications 66,938 10,653 1 77,592 Other 2,688 518 (412 ) 2,794 Total $ 510,486 $ 12,690 $ 3,256 $ 526,432 Quarter Ended March 30, 2020 PCB RF&S Components Other (1) Total End Markets (In thousands) Aerospace and Defense $ 184,414 $ — $ — $ 184,414 Automotive 61,858 — 7,013 68,871 Cellular Phone 2,775 — — 2,775 Data Center Computing (2) 58,114 203 54 58,371 Medical/Industrial/Instrumentation 90,468 794 3,320 94,582 Networking/Communications 70,433 8,067 4,195 82,695 Other 5,940 377 (379 ) 5,938 Total $ 474,002 $ 9,441 $ 14,203 $ 497,646 (1) Other represents SH E-MS and SZ results. (2) In the current period, the Computing/Storage/Peripherals end market was renamed to Data Center Computing to better reflect the customer mix and growth prospects. There was no change to the customers included in this end market.

Composition of Certain Consolid

Composition of Certain Consolidated Condensed Financial Statement Captions	3 Months Ended
	Mar. 29, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Composition of Certain Consolidated Condensed Financial Statement Captions	(5) Composition of Certain Consolidated Condensed Financial Statement Captions As of March 29, 2021 December 28, 2020 (In thousands) Inventories: Raw materials $ 108,271 $ 103,890 Work-in-process 9,259 7,841 Finished goods 3,594 3,920 $ 121,124 $ 115,651 Property, plant and equipment, net: Land and land use rights $ 62,061 $ 61,781 Buildings and improvements 402,361 398,540 Machinery and equipment 840,249 832,723 Furniture and fixtures and other 10,198 10,304 Construction-in-progress 36,911 33,191 1,351,780 1,336,539 Less: Accumulated depreciation (700,586 ) (686,104 ) $ 651,194 $ 650,435 Other current liabilities: Sales returns and allowances $ 12,669 $ 13,015 Income taxes payable 5,553 2,428 Warrant liabilities 4,070 — Restructuring 3,184 7,382 Interest 3,051 7,157 Other 58,201 59,440 $ 86,728 $ 89,422 Other long-term liabilities: Deferred income taxes $ 23,782 $ 23,704 Derivative liabilities 12,579 14,968 Defined benefit pension plan liability 9,605 9,986 Other 26,455 25,167 $ 72,421 $ 73,825

Goodwill

Goodwill	3 Months Ended
	Mar. 29, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	(6) Goodwill As of March 29, 2021 and December 28, 2020, goodwill by reportable segment was as follows: PCB RF&S Components Total (In thousands) Balance as of December 28, 2020 and March 29, 2021 Goodwill $ 700,724 $ 177,200 $ 877,924 Accumulated impairment losses (171,400 ) (69,200 ) (240,600 ) $ 529,324 $ 108,000 $ 637,324

Definite-lived Intangibles

Definite-lived Intangibles	3 Months Ended
	Mar. 29, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Definite-lived Intangibles	(7) Definite-lived Intangibles As of March 29, 2021 and December 28, 2020, the components of definite-lived intangibles were as follows: Gross Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period (In thousands) (In years) March 29, 2021 Customer relationships $ 397,500 $ (159,663 ) $ 237,837 10.9 Technology 47,650 (15,085 ) 32,565 9.5 $ 445,150 $ (174,748 ) $ 270,402 December 28, 2020 Customer relationships $ 397,500 $ (150,142 ) $ 247,358 10.9 Technology 47,650 (13,701 ) 33,949 9.5 $ 445,150 $ (163,843 ) $ 281,307 Definite-lived intangibles are amortized using the straight-line method of amortization over the useful life. Amortization expense was $10,905 and $10,945 for the quarters ended March 29, 2021 and March 30, 2020, respectively. For the quarters ended March 29, 2021 and March 30, 2020, $1,384 and $1,383, respectively, of amortization expense is included in cost of goods sold. Estimated aggregate amortization for definite-lived intangible assets for the next five years and thereafter is as follows: (In thousands) Remaining 2021 $ 30,274 2022 38,631 2023 36,713 2024 29,713 2025 25,397 Thereafter 109,674 $ 270,402

Long-term Debt and Letters of C

Long-term Debt and Letters of Credit	3 Months Ended
	Mar. 29, 2021
Debt Disclosure [Abstract]
Long-term Debt and Letters of Credit	(8) Long-term Debt and Letters of Credit The following table summarizes the long-term debt of the Company as of March 29, 2021 and December 28, 2020: Interest Rate as of March 29, 2021 Principal Outstanding as of March 29, 2021 Interest Rate as of December 28, 2020 Principal Outstanding as of December 28, 2020 (In thousands) Senior Notes due March 2029 4.00 % $ 500,000 — % $ — Term Loan due September 2024 2.61 405,879 2.65 405,879 Senior Notes due October 2025 — — 5.63 375,000 U.S. ABL Revolving Loan due June 2024 — — 1.40 40,000 Asia ABL Revolving Loan due June 2024 1.51 30,000 1.55 30,000 935,879 850,879 Less: Long-term debt unamortized discount (763 ) (814 ) Long-term debt unamortized debt issuance costs (8,988 ) (7,212 ) 926,128 842,853 Less: current maturities — — Long-term debt, less current maturities $ 926,128 $ 842,853 The Company has twelve months from September 3, 2020 to reinvest the cash proceeds received from the sale of the Mobility business unit. If the proceeds are not reinvested, the Company is required to use the proceeds to prepay the Term Loan. The Company used a portion of the cash proceeds to repay $400,000 of the Term Loan during the year ended December 28, 2020 and plans to use the remaining cash proceeds for reinvestment. Permitted investments, as defined in the Term Loan Credit Agreement, include extensions of trade credit in the ordinary course of business, investments in cash and cash equivalents, permitted acquisitions, investments in assets useful in the business of the Company and its restricted subsidiaries, investments in joint ventures and unrestricted subsidiaries among others . Senior Notes due 2029 On March 10, 2021, the Company issued $500,000 of Senior Notes due 2029, which are included in long-term debt and bear interest at a rate of 4.0% per annum. Interest is payable semiannually in arrears on March 1 and September 1 of each year beginning September 1, 2021. The Senior Notes due 2029 will mature on March 1, 2029. The Company used a portion of the net proceeds from the issuance of the Senior Notes due 2029 during the quarter ended March 29, 2021 to: (i) fund the early retirement of $375,000 Senior Notes due 2025, (ii) fund the repayment of $40,000 outstanding under the U.S. Asset-Based Lending Credit Agreement (U.S. ABL) Revolving credit facility (but not terminate the commitments thereunder), and (iii) pay related premiums, fees and expenses. The Company intends to use the remaining net proceeds for general corporate purposes. Asset-Based Lending Agreements As of March 29, 2021, letters of credit in the amount of $10,753 were outstanding under the U.S. ABL and $11,721 were outstanding under the Asia ABL with various expiration dates through July 2021. Available borrowing capacity under the U.S. ABL and the Asia ABL was $139,247 and $108,279, respectively, which considers letters of credit outstanding as of March 29, 2021. Debt Covenants Borrowings under the Term Loan and Senior Notes due 2029 are subject to certain affirmative and negative covenants, including limitations on indebtedness, corporate transactions, investments, dispositions, and share payments. Under the occurrence of certain events, the U.S. ABL and Asia Asset-Based Lending Credit Agreement (Asia ABL) (collectively, the ABL Revolving Loans), are subject to various financial covenants, including leverage and fixed charge coverage ratios. Debt Issuance and Debt Discount As of March 29 , 2021 As of March 29, 2021 As of December 28, 2020 Debt Issuance Costs Debt Discount Effective Interest Rate Debt Issuance Costs Debt Discount Effective Interest Rate (In thousands, except interest rates) Senior Notes due March 2029 $ 6,462 $ — 4.19 % $ — $ — — % Term Loan due September 2024 2,526 763 4.66 2,695 814 4.66 Senior Notes due October 2025 — — — 4,517 — 5.92 $ 8,988 $ 763 $ 7,212 $ 814 The above debt discount and debt issuance costs are recorded as a reduction of the debt and are amortized into interest expense using an effective interest rate over the duration of the debt. Remaining unamortized debt issuance costs for the ABL Revolving Loans of $1,778 and $1,919 as of March 29 , 2021 As of March 29 , 2021 Loss on Extinguishment of Debt During the quarter ended March 29, 2021, the Company recognized losses of $15,217 associated with the premium paid on extinguishment of debt and the write-off of the remaining unamortized debt issuance costs as a result of the repayment of the remaining outstanding balance of the Senior Notes due 2025.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 29, 2021
Income Tax Disclosure [Abstract]
Income Taxes	(9) Income Taxes The Company’s effective tax rate is impacted by tax rates in China and Hong Kong, the U.S. federal income tax rate, apportioned state income tax rates, generation of credits and deductions available to the Company as well as changes in valuation allowances and certain non-deductible items. Additionally, no tax benefit was recorded on the losses incurred in certain foreign jurisdictions as a result of corresponding increases in the valuation allowances in these jurisdictions. During the quarter ended March 29, 2021, the Company’s effective tax rate was impacted by a net discrete benefit of $383. This benefit resulted from the approval of the Company’s renewal application for High and New Tax Enterprise status for two of the Company’s manufacturing subsidiaries in China, including the impact on the respective Company’s deferred tax amounts, partially offset by tax expense on stock based compensation releases and the accrued interest expense on existing uncertain tax positions. The Company has various foreign subsidiaries formed or acquired to conduct or support its business outside the United States. The Company expects its earnings attributable to most foreign subsidiaries may be repatriated back to the U.S. and so a deferred tax liability has been recorded for foreign withholding and the estimated federal/state tax impact. For those other companies with earnings currently being reinvested outside of the U.S., no deferred tax liabilities on undistributed earnings are recorded.

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 29, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Financial Instruments	(10) Financial Instruments Derivatives Interest Rate Swaps The Company’s business is exposed to interest rate risk resulting from fluctuations in interest rates on certain LIBOR-based variable rate debt. Increases in interest rates would increase interest expenses relating to the outstanding variable rate borrowings and increase the cost of debt. Fluctuations in interest rates can also lead to significant fluctuations in the fair value of the debt obligations. On May 15, 2018, the Company entered into a four-year At inception, the Company designated the interest rate swap as a cash flow hedge and the fair value of the interest rate swap was zero. As of March 29, 2021, the fair value of the interest rate swap was recorded as a liability in the amount of $12,579 and included as a component of other long-term liabilities. The change in the fair value of the interest rate swap is recorded as a component of accumulated other comprehensive loss, net of tax. No ineffectiveness was recognized for the quarters ended March 29, 2021 and March 30, 2020. The interest rate swap increased interest expense by $2,740 and $1,175 for the quarters ended March 29, 2021 and March 30, 2020, respectively. Foreign Exchange Contracts The Company enters into foreign currency forward contracts to mitigate the impact of changes in foreign currency exchange rates and to reduce the volatility of purchases and other obligations generated in currencies other than its functional currencies. The Company’s foreign subsidiaries may at times purchase forward exchange contracts to manage their foreign currency risks in relation to certain purchases of machinery denominated in foreign currencies other than the Company’s functional currencies. The notional amount of the foreign exchange contracts as of March 29, 2021 and December 28, 2020 was approximately $1,852 (Japanese Yen (JPY) 196.3 million) and $1,181 (JPY 125.0 million), respectively. The Company has designated certain of these foreign exchange contracts as cash flow hedges. The fair values of derivative instruments in the consolidated condensed balance sheets are as follows: Asset/(Liability) Fair Value Balance Sheet Location March 29, 2021 December 28, 2020 (In thousands) Cash flow derivative instruments designated as hedges: Interest rate swap Other long-term liabilities $ (12,579 ) $ (14,968 ) Cash flow derivative instruments not designated as hedges: Foreign exchange contracts Prepaid expenses and other current assets — 28 Foreign exchange contracts Other current liabilities 56 — The following table provides information about the amounts recorded in accumulated other comprehensive loss related to derivatives designated as cash flow hedges, as well as the amounts recorded in each caption in the consolidated condensed statements of operations when derivative amounts are reclassified out of accumulated other comprehensive loss for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, 2021 Quarter Ended March 30, 2020 Financial Statement Caption Loss Recognized in Other Comprehensive Loss Loss Reclassified into Income Loss Recognized in Other Comprehensive Loss Loss Reclassified into Income (In thousands) Cash flow hedge: Interest rate swap Interest expense $ (351 ) $ (2,740 ) $ (8,449 ) $ (1,175 ) The following table provides a summary of the activity associated with the designated cash flow hedges reflected in accumulated other comprehensive loss for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, March 30, 2021 2020 (In thousands) Beginning balance, net of tax $ (11,231 ) $ (9,617 ) Changes in fair value loss, net of tax (263 ) (6,018 ) Reclassification to earnings 2,052 860 Ending balance, net of tax $ (9,442 ) $ (14,775 ) Based on the current yield curve, the Company expects that losses of approximately $8,092 of the accumulated other comprehensive loss will be reclassified into the statement of operations, net of tax, in the next twelve months.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 29, 2021
Equity [Abstract]
Accumulated Other Comprehensive Loss	(11) Accumulated Other Comprehensive Loss The following provides a summary of the components of accumulated other comprehensive loss, net of tax, as of March 29, 2021 and December 28, 2020: Foreign Currency Translation Pension Obligation (Losses) Gains on Cash Flow Hedges Total (In thousands) Ending balance as of December 28, 2020 $ (24,827 ) $ (2,855 ) $ (11,231 ) $ (38,913 ) Other comprehensive loss before reclassifications (3 ) — (263 ) (266 ) Amounts reclassified from accumulated other comprehensive loss — — 2,052 2,052 Other comprehensive (loss) income (3 ) — 1,789 1,786 Ending balance as of March 29, 2021 $ (24,830 ) $ (2,855 ) $ (9,442 ) $ (37,127 )

Significant Customers and Conce

Significant Customers and Concentration of Credit Risk	3 Months Ended
	Mar. 29, 2021
Risks And Uncertainties [Abstract]
Significant Customers and Concentration of Credit Risk	(12) Significant Customers and Concentration of Credit Risk In the normal course of business, the Company extends credit to its customers. Some customers to which the Company extends credit are located outside the United States. The Company performs ongoing credit evaluations of customers, does not require collateral, and considers the credit risk profile of the entity from which the receivable is due in further evaluating collection risk. The Company’s customers include both OEMs and EMS companies. The Company’s OEM customers often direct a significant portion of their purchases through EMS companies. While the Company’s customers include both OEM and EMS providers, the Company measures customer concentration based on OEM companies, as they are the ultimate end customers. For the quarter ended March 29, 2021, other than one customer that accounted for approximately 13% of the Company’s net sales, there were no other customers that accounted for 10% or more of net sales. For the quarter ended March 30, 2020, there were no customers that accounted for 10% or more of net sales.

Fair Value Measures

Fair Value Measures	3 Months Ended
	Mar. 29, 2021
Fair Value Disclosures [Abstract]
Fair Value Measures	(13) Fair Value Measures The Company measures at fair value its financial and non-financial assets by using a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, essentially an exit price, based on the highest and best use of the asset or liability. The carrying amount and estimated fair value of the Company’s financial instruments as of March 29, 2021 and December 28, 2020 were as follows: As of As of March 29, 2021 December 28, 2020 Carrying Amount Fair Value Carrying Amount Fair Value (In thousands) Derivative assets, current $ — $ — $ 28 $ 28 Derivative liabilities, current 56 56 — — Derivative liabilities, non-current 12,579 12,579 14,968 14,968 Warrant liabilities, current 4,070 4,070 — — Senior Notes due March 2029 493,538 493,425 — — Term Loan due September 2024 402,590 406,387 402,370 407,909 Senior Notes due October 2025 — — 370,483 383,974 ABL Revolving Loans 30,000 30,000 70,000 70,000 The fair value of the derivative instruments was determined using pricing models developed based on the LIBOR swap rate, foreign currency exchange rates, and other observable market data, including quoted market prices, as appropriate using Level 2 inputs. The values were adjusted to reflect non-performance risk of both the counterparty and the Company, as necessary. The fair value of the warrant liabilities was valued using the Black-Scholes model with the following weighted-average assumptions: expected term of 0.25 years, expected volatility of 35%, risk-free interest rate of 0.032%, and expected dividend yield of 0%. The inputs used in the warrant valuation are considered Level 3 inputs. The fair value of the long-term debt was estimated based on quoted market prices or discounting the debt over its life using current market rates for similar debt as of March 29, 2021 and December 28, 2020, which are considered Level 2 inputs. As of March 29, 2021 and December 28, 2020, the Company’s other financial instruments included cash and cash equivalents, accounts receivable, and accounts payable. Due to short-term maturities, the carrying amount of these instruments approximates fair value. The Company’s cash and cash equivalents as of March 29, 2021 consisted of $305,841 held in the U.S., with the remaining $233,807 held by foreign subsidiaries. The majority of the Company’s non-financial assets and liabilities, which include goodwill, intangible assets, inventories, and property, plant and equipment, are not required to be carried at fair value on a recurring basis. However, if certain triggering events occur (or are tested at least annually in the case of goodwill) such that a non-financial instrument is required to be evaluated for impairment, based upon a comparison of the non-financial instrument’s fair value to its carrying value, an impairment is recorded to reduce the carrying value to the fair value, if the carrying value exceeds the fair value.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 29, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(14) Commitments and Contingencies Legal Matters The Company is subject to various legal matters, which it considers normal for its business activities. While the Company currently believes that the amount of any reasonably possible loss for known matters would not be material to the Company’s financial condition, the outcome of these actions is inherently difficult to predict. In the event of an adverse outcome, the ultimate potential loss could have a material adverse effect on the Company’s financial condition or results of operations in a particular period. The Company has accrued amounts for its loss contingencies which are probable and estimable as of March 29, 2021 and December 28, 2020. However, these amounts are not material to the consolidated condensed financial statements of the Company.

Loss Per Share

Loss Per Share	3 Months Ended
	Mar. 29, 2021
Earnings Per Share [Abstract]
Loss Per Share	(15) Loss The following is a reconciliation of the numerator and denominator used to calculate basic earnings per share and diluted earnings per share from continuing operations for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, 2021 March 30, 2020 (In thousands, except per share amounts) Net loss from continuing operations $ (3,192 ) $ (3,220 ) Basic weighted average shares 106,825 105,686 Dilutive effect of performance-based restricted stock units, restricted stock units and stock options — — Diluted shares 106,825 105,686 Loss per share: Basic $ (0.03 ) $ (0.03 ) Diluted $ (0.03 ) $ (0.03 ) For the quarter ended March 29, 2021, potential shares of common stock, consisting of stock options to purchase approximately 60 shares of common stock at exercise prices ranging from $11.83 to $16.60 per share, 2,897 restricted stock units (RSUs), and 289 performance-based restricted stock units (PRUs) were not included in the computation of diluted earnings per share because the Company incurred a net loss and as a result, the impact would be anti-dilutive. For the quarter ended March 30, 2020, potential shares of common stock, consisting of stock options to purchase approximately 100 shares of common stock at exercise prices ranging from $9.54 to $16.60 per share, 2,459 RSUs, and 216 PRUs were not included in the computation of diluted earnings per share because the Company incurred a net loss and, as a result, the impact would be anti-dilutive. Outstanding warrants for the quarters ended March 29, 2021 and March 30, 2020, to purchase common stock were not included in the computation of dilutive earnings per share because the strike price of the warrants to purchase the Company’s common stock was greater than the average market price of common shares during the applicable quarter and because the Company incurred a net loss, and therefore, the effect would be anti-dilutive.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 29, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	(16) Stock-Based Compensation Stock-based compensation expense is recognized in the accompanying consolidated condensed statements of operations as follows: Quarter Ended March 29, March 30, 2021 2020 (In thousands) Cost of goods sold $ 1,165 $ 850 Selling and marketing 646 451 General and administrative 2,355 3,477 Research and development 43 57 Stock-based compensation expense recognized $ 4,209 $ 4,835 Summary of Unrecognized Compensation Costs The following is a summary of total unrecognized compensation costs as of March 29, 2021: Unrecognized Stock-Based Compensation Cost Remaining Weighted Average Recognition Period (In thousands) (In years) RSU awards $ 17,102 1.4 PRU awards 3,974 1.4 Stock options 110 1.1 $ 21,186

Segment Information

Segment Information	3 Months Ended
	Mar. 29, 2021
Segment Reporting [Abstract]
Segment Information	(17) Segment Information The reportable segments shown below are the Company’s segments for which separate financial information is available and upon which operating results are evaluated by the chief operating decision maker to assess performance and to allocate resources. In fiscal 2020, subsequent to the quarter ended March 30, 2020, RF&S Components was added as a reportable segment. As a result, the Company had The Company, including the chief operating decision maker, evaluates segment performance based on reportable segment income, which is operating income before amortization of intangibles. Interest expense and interest income are not presented by segment since they are not included in the measure of segment profitability reviewed by the chief operating decision maker. All inter-segment transactions have been eliminated. Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Net Sales: PCB $ 510,486 $ 474,002 RF&S Components 12,690 9,441 Other (1) 3,256 14,203 Total net sales $ 526,432 $ 497,646 Operating Segment Loss: PCB $ 57,232 $ 60,238 RF&S Components 3,862 1,908 Corporate and Other (1) (30,389 ) (35,019 ) Total operating segment income 30,705 27,127 Amortization of definite-lived intangibles (2) (10,905 ) (10,945 ) Total operating income 19,800 16,182 Total other expense (24,099 ) (17,279 ) Loss before income taxes $ (4,299 ) $ (1,097 ) As of March 29, 2021 December 28, 2020 (In thousands) Segment Assets: PCB $ 1,549,531 $ 1,529,102 RF&S Components 225,233 227,990 Corporate and Other (1) 1,191,064 1,138,852 Total assets $ 2,965,828 $ 2,895,944 (1) Other represents SH E-MS and SZ results. (2) Amortization of definite-lived intangibles primarily relates to the PCB and RF&S Components reportable segments. For the quarters ended March 29, 2021 and March 30, 2020, $1,384 and $1,383, respectively, of amortization expense is included in cost of goods sold. The Corporate category primarily includes operating expenses that are not included in the segment operating performance measures. Corporate consists primarily of corporate governance functions such as finance, accounting, information technology, facilities and human resources personnel, as well as global sales and marketing personnel, research and development costs, and acquisition and integration costs associated with acquisitions and divestitures. The Company markets and sells its products in approximately 46 countries. Other than in the United States and China, the Company does not conduct business in any country in which its net sales in that country exceed 10% of the Company’s total net sales. Net sales are as follows: Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Net Sales: United States $ 268,467 $ 262,279 China 81,709 74,929 Other 176,256 160,438 Total net sales $ 526,432 $ 497,646 Net sales are attributed to countries by country invoiced.

Restructuring Charges

Restructuring Charges	3 Months Ended
	Mar. 29, 2021
Restructuring And Related Activities [Abstract]
Restructuring Charges	(18) Restructuring Charges On April 29, 2020, the Company announced the restructuring of its E-M Solutions business unit. The E-M Solutions business unit consisted of three Chinese manufacturing facilities with two being in Shanghai (SH BPA and SH E-MS) and one in Shenzhen (SZ). The Company ceased operations at the SH E-MS and SZ facilities while integrating the SH BPA facility into its PCB operations. The restructuring is another step in advancing the Company’s stated strategy of increasing its focus on differentiated higher margin products that more fully leverage the Company’s early engagement capabilities and industry leading engineering-based technology solutions. The Company closed the SH E-MS and SZ facilities at the end of 2020. As of March 29, 2021, the Company has incurred approximately $19,272 of restructuring charges and $6,702 of accelerated depreciation expense since the April 29, 2020 announcement. In connection with the restructuring of its E-M Solutions business unit and other global realignment restructuring efforts, the Company recognized employee separation, contract termination and other costs during the quarters ended March 29, 2021 and March 30, 2020. Contract termination and other costs primarily represented plant closure costs. The below table summarizes such restructuring costs by reportable segment, which are included as a component of general and administrative expenses in the consolidated condensed statements of operations, for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, 2021 Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ 342 $ 12 $ 354 Corporate and Other (1) 359 2,519 2,878 $ 701 $ 2,531 $ 3,232 Quarter Ended March 30, 2020 Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ — $ 13 $ 13 Corporate and Other (1) 309 6 315 $ 309 $ 19 $ 328 (1) Other represents SH E-MS and SZ results. Accrued restructuring costs are included as a component of other current liabilities in the consolidated condensed balance sheet. The below table shows the utilization of the accrued restructuring costs during the quarter ended March 29, 2021: Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Accrued as of December 28, 2020 $ 7,063 $ 319 $ 7,382 Charged to expense 701 2,531 3,232 Amount paid (4,629 ) (2,801 ) (7,430 ) Accrued as of March 29, 2021 $ 3,135 $ 49 $ 3,184

Nature of Operations and Basi_2

Nature of Operations and Basis of Presentation (Policies)	3 Months Ended
	Mar. 29, 2021
Accounting Policies [Abstract]
Reclassifications	Reclassifications The Company currently has two reportable segments: PCB and RF and Specialty Components (RF&S Components). In fiscal 2020, subsequent to the quarter ended March 30, 2020, RF&S Components was added as a reportable segment. As a result, the Company had three reportable segments as of December 28, 2020: PCB, RF&S Components, and E-M Solutions. On April 29, 2020, the Company announced the restructuring of its E-M Solutions business unit. In prior periods, the Company’s E-M Solutions business unit consisted of three Chinese manufacturing facilities with two being in Shanghai (SH BPA and SH E-MS) and one in Shenzhen (SZ). The Company closed the SH E-MS and SZ facilities at the end of 2020 and integrated the SH BPA facility into its PCB operations. As of March 29, 2021, E-M Solutions no longer meets the criteria for segment reporting. As a result of the addition of the RF&S Components reportable segment and the restructuring of the E-M Solutions business unit, certain prior year amounts have been reclassified to conform to this new presentation.
Recently Adopted and Issued Accounting Standards	Recently Adopted and Issued Accounting Standards Recently Adopted Accounting Standards In December 2019, the Financial Accounting Standards Board (FASB) issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU as of December 29, 2020 and it did not have a material impact on its consolidated condensed financial statements and related disclosures.

Discontinued Operations (Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 29, 2021
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Components of Discontinued Operations	The following table summarizes the results of Mobility operations for the quarter ended March 30, 2020 prior to sale: Quarter Ended March 30, 2020 (In thousands) Net sales $ 113,174 Cost of goods sold 108,425 Gross profit 4,749 Operating expenses: Selling and marketing 1,176 General and administrative 1,310 Research and development 147 Amortization of definite-lived intangibles 675 Total operating expenses 3,308 Operating income 1,441 Other (expense) income: Interest expense (223 ) Other, net 1,571 Total other income, net 1,348 Income from discontinued operations before income taxes 2,789 Income tax provision (743 ) Income from discontinued operations, net of income taxes $ 2,046 Earnings per share from discontinued operations: Basic earnings per share $ 0.02 Diluted earnings per share $ 0.02

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 29, 2021
Leases [Abstract]
Components of Lease Expense	The components of lease expense were as follows: Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Operating lease cost $ 2,208 $ 2,481 Variable lease cost 234 106 Short-term lease cost 54 229
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 2,159 $ 2,171 Right-of-use assets obtained in exchange for new lease obligations: Operating leases 284 1,876
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: As of March 29, 2021 December 28, 2020 (In thousands) Operating lease right-of-use assets $ 21,383 $ 24,340 Other current liabilities 6,609 8,144 Operating lease liabilities 15,658 17,211 Total operating lease liabilities $ 22,267 $ 25,355 As of March 29, 2021 December 28, 2020 Weighted average remaining lease term 4.4 years 4.2 years Weighted average discount rate 3.29 % 3.31 %
Maturities of Operating Lease Liabilities	Maturities of operating lease liabilities were as follows (1) (In thousands) Less than one year $ 7,214 1 - 2 years 5,015 2 - 3 years 4,309 3 - 4 years 3,370 4 - 5 years 2,123 Thereafter 1,902 Total lease payments 23,933 Less imputed interest (1,666 ) Total $ 22,267 (1) Excludes $851 of legally binding

Revenues (Tables)

Revenues (Tables)	3 Months Ended
	Mar. 29, 2021
Revenue From Contract With Customer [Abstract]
Schedule of Disaggregation of Revenue by Principal End Markets with the Reportable Segment	The following tables represent a disaggregation of revenue by principal end markets with the reportable segments: Quarter Ended March 29, 2021 PCB RF&S Components Other (1) Total End Markets (In thousands) Aerospace and Defense $ 186,539 $ 6 $ — $ 186,545 Automotive 91,792 — 3,642 95,434 Data Center Computing (2) 71,759 432 — 72,191 Medical/Industrial/Instrumentation 90,770 1,081 25 91,876 Networking/Communications 66,938 10,653 1 77,592 Other 2,688 518 (412 ) 2,794 Total $ 510,486 $ 12,690 $ 3,256 $ 526,432 Quarter Ended March 30, 2020 PCB RF&S Components Other (1) Total End Markets (In thousands) Aerospace and Defense $ 184,414 $ — $ — $ 184,414 Automotive 61,858 — 7,013 68,871 Cellular Phone 2,775 — — 2,775 Data Center Computing (2) 58,114 203 54 58,371 Medical/Industrial/Instrumentation 90,468 794 3,320 94,582 Networking/Communications 70,433 8,067 4,195 82,695 Other 5,940 377 (379 ) 5,938 Total $ 474,002 $ 9,441 $ 14,203 $ 497,646 (1) Other represents SH E-MS and SZ results. (2) In the current period, the Computing/Storage/Peripherals end market was renamed to Data Center Computing to better reflect the customer mix and growth prospects. There was no change to the customers included in this end market.

Composition of Certain Consol_2

Composition of Certain Consolidated Condensed Financial Statement Captions (Tables)	3 Months Ended
	Mar. 29, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Schedule of Composition of Certain Consolidated Condensed Financial Statement Captions	As of March 29, 2021 December 28, 2020 (In thousands) Inventories: Raw materials $ 108,271 $ 103,890 Work-in-process 9,259 7,841 Finished goods 3,594 3,920 $ 121,124 $ 115,651 Property, plant and equipment, net: Land and land use rights $ 62,061 $ 61,781 Buildings and improvements 402,361 398,540 Machinery and equipment 840,249 832,723 Furniture and fixtures and other 10,198 10,304 Construction-in-progress 36,911 33,191 1,351,780 1,336,539 Less: Accumulated depreciation (700,586 ) (686,104 ) $ 651,194 $ 650,435 Other current liabilities: Sales returns and allowances $ 12,669 $ 13,015 Income taxes payable 5,553 2,428 Warrant liabilities 4,070 — Restructuring 3,184 7,382 Interest 3,051 7,157 Other 58,201 59,440 $ 86,728 $ 89,422 Other long-term liabilities: Deferred income taxes $ 23,782 $ 23,704 Derivative liabilities 12,579 14,968 Defined benefit pension plan liability 9,605 9,986 Other 26,455 25,167 $ 72,421 $ 73,825

Goodwill (Tables)

Goodwill (Tables)	3 Months Ended
	Mar. 29, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill by Reportable Segment	As of March 29, 2021 and December 28, 2020, goodwill by reportable segment was as follows: PCB RF&S Components Total (In thousands) Balance as of December 28, 2020 and March 29, 2021 Goodwill $ 700,724 $ 177,200 $ 877,924 Accumulated impairment losses (171,400 ) (69,200 ) (240,600 ) $ 529,324 $ 108,000 $ 637,324

Definite-lived Intangibles (Tab

Definite-lived Intangibles (Tables)	3 Months Ended
	Mar. 29, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Definite Lived Intangibles	As of March 29, 2021 and December 28, 2020, the components of definite-lived intangibles were as follows: Gross Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period (In thousands) (In years) March 29, 2021 Customer relationships $ 397,500 $ (159,663 ) $ 237,837 10.9 Technology 47,650 (15,085 ) 32,565 9.5 $ 445,150 $ (174,748 ) $ 270,402 December 28, 2020 Customer relationships $ 397,500 $ (150,142 ) $ 247,358 10.9 Technology 47,650 (13,701 ) 33,949 9.5 $ 445,150 $ (163,843 ) $ 281,307
Estimated Aggregate Amortization for Definite-Lived Intangible Assets	Estimated aggregate amortization for definite-lived intangible assets for the next five years and thereafter is as follows: (In thousands) Remaining 2021 $ 30,274 2022 38,631 2023 36,713 2024 29,713 2025 25,397 Thereafter 109,674 $ 270,402

Long-term Debt and Letters of_2

Long-term Debt and Letters of Credit (Tables)	3 Months Ended
	Mar. 29, 2021
Debt Disclosure [Abstract]
Long-term Debt	The following table summarizes the long-term debt of the Company as of March 29, 2021 and December 28, 2020: Interest Rate as of March 29, 2021 Principal Outstanding as of March 29, 2021 Interest Rate as of December 28, 2020 Principal Outstanding as of December 28, 2020 (In thousands) Senior Notes due March 2029 4.00 % $ 500,000 — % $ — Term Loan due September 2024 2.61 405,879 2.65 405,879 Senior Notes due October 2025 — — 5.63 375,000 U.S. ABL Revolving Loan due June 2024 — — 1.40 40,000 Asia ABL Revolving Loan due June 2024 1.51 30,000 1.55 30,000 935,879 850,879 Less: Long-term debt unamortized discount (763 ) (814 ) Long-term debt unamortized debt issuance costs (8,988 ) (7,212 ) 926,128 842,853 Less: current maturities — — Long-term debt, less current maturities $ 926,128 $ 842,853
Schedule of Remaining Unamortized Debt Discount and Debt Issuance Costs	As of March 29 , 2021 As of March 29, 2021 As of December 28, 2020 Debt Issuance Costs Debt Discount Effective Interest Rate Debt Issuance Costs Debt Discount Effective Interest Rate (In thousands, except interest rates) Senior Notes due March 2029 $ 6,462 $ — 4.19 % $ — $ — — % Term Loan due September 2024 2,526 763 4.66 2,695 814 4.66 Senior Notes due October 2025 — — — 4,517 — 5.92 $ 8,988 $ 763 $ 7,212 $ 814

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 29, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Fair Values of Derivative Instruments in Consolidated Condensed Balance Sheets	The fair values of derivative instruments in the consolidated condensed balance sheets are as follows: Asset/(Liability) Fair Value Balance Sheet Location March 29, 2021 December 28, 2020 (In thousands) Cash flow derivative instruments designated as hedges: Interest rate swap Other long-term liabilities $ (12,579 ) $ (14,968 ) Cash flow derivative instruments not designated as hedges: Foreign exchange contracts Prepaid expenses and other current assets — 28 Foreign exchange contracts Other current liabilities 56 —
Summary of Accumulated Other Comprehensive Loss Related to Derivatives Designated as Cash Flow Hedges	The following table provides information about the amounts recorded in accumulated other comprehensive loss related to derivatives designated as cash flow hedges, as well as the amounts recorded in each caption in the consolidated condensed statements of operations when derivative amounts are reclassified out of accumulated other comprehensive loss for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, 2021 Quarter Ended March 30, 2020 Financial Statement Caption Loss Recognized in Other Comprehensive Loss Loss Reclassified into Income Loss Recognized in Other Comprehensive Loss Loss Reclassified into Income (In thousands) Cash flow hedge: Interest rate swap Interest expense $ (351 ) $ (2,740 ) $ (8,449 ) $ (1,175 )
Summary of Activity of Designated Cash Flow Hedges in Accumulated Other Comprehensive Loss	The following table provides a summary of the activity associated with the designated cash flow hedges reflected in accumulated other comprehensive loss for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, March 30, 2021 2020 (In thousands) Beginning balance, net of tax $ (11,231 ) $ (9,617 ) Changes in fair value loss, net of tax (263 ) (6,018 ) Reclassification to earnings 2,052 860 Ending balance, net of tax $ (9,442 ) $ (14,775 )

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 29, 2021
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss, Net of Tax	The following provides a summary of the components of accumulated other comprehensive loss, net of tax, as of March 29, 2021 and December 28, 2020: Foreign Currency Translation Pension Obligation (Losses) Gains on Cash Flow Hedges Total (In thousands) Ending balance as of December 28, 2020 $ (24,827 ) $ (2,855 ) $ (11,231 ) $ (38,913 ) Other comprehensive loss before reclassifications (3 ) — (263 ) (266 ) Amounts reclassified from accumulated other comprehensive loss — — 2,052 2,052 Other comprehensive (loss) income (3 ) — 1,789 1,786 Ending balance as of March 29, 2021 $ (24,830 ) $ (2,855 ) $ (9,442 ) $ (37,127 )

Fair Value Measures (Tables)

Fair Value Measures (Tables)	3 Months Ended
	Mar. 29, 2021
Fair Value Disclosures [Abstract]
Carrying Amount and Estimated Fair Value of Financial Instruments	The carrying amount and estimated fair value of the Company’s financial instruments as of March 29, 2021 and December 28, 2020 were as follows: As of As of March 29, 2021 December 28, 2020 Carrying Amount Fair Value Carrying Amount Fair Value (In thousands) Derivative assets, current $ — $ — $ 28 $ 28 Derivative liabilities, current 56 56 — — Derivative liabilities, non-current 12,579 12,579 14,968 14,968 Warrant liabilities, current 4,070 4,070 — — Senior Notes due March 2029 493,538 493,425 — — Term Loan due September 2024 402,590 406,387 402,370 407,909 Senior Notes due October 2025 — — 370,483 383,974 ABL Revolving Loans 30,000 30,000 70,000 70,000

Loss Per Share (Tables)

Loss Per Share (Tables)	3 Months Ended
	Mar. 29, 2021
Earnings Per Share [Abstract]
Reconciliation of Numerator and Denominator Used to Calculate Basic Earnings per Share and Diluted Earnings per Share from Continuing Operations	The following is a reconciliation of the numerator and denominator used to calculate basic earnings per share and diluted earnings per share from continuing operations for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, 2021 March 30, 2020 (In thousands, except per share amounts) Net loss from continuing operations $ (3,192 ) $ (3,220 ) Basic weighted average shares 106,825 105,686 Dilutive effect of performance-based restricted stock units, restricted stock units and stock options — — Diluted shares 106,825 105,686 Loss per share: Basic $ (0.03 ) $ (0.03 ) Diluted $ (0.03 ) $ (0.03 )

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 29, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Amounts Recognized in Consolidated Financial Statements of Operations with Respect to Stock Based Compensation Plan	Stock-based compensation expense is recognized in the accompanying consolidated condensed statements of operations as follows: Quarter Ended March 29, March 30, 2021 2020 (In thousands) Cost of goods sold $ 1,165 $ 850 Selling and marketing 646 451 General and administrative 2,355 3,477 Research and development 43 57 Stock-based compensation expense recognized $ 4,209 $ 4,835
Summary of Unrecognized Compensation Costs	The following is a summary of total unrecognized compensation costs as of March 29, 2021: Unrecognized Stock-Based Compensation Cost Remaining Weighted Average Recognition Period (In thousands) (In years) RSU awards $ 17,102 1.4 PRU awards 3,974 1.4 Stock options 110 1.1 $ 21,186

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 29, 2021
Segment Reporting [Abstract]
Reconciliation of Operating Income (Loss) from Segments to Consolidated	Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Net Sales: PCB $ 510,486 $ 474,002 RF&S Components 12,690 9,441 Other (1) 3,256 14,203 Total net sales $ 526,432 $ 497,646 Operating Segment Loss: PCB $ 57,232 $ 60,238 RF&S Components 3,862 1,908 Corporate and Other (1) (30,389 ) (35,019 ) Total operating segment income 30,705 27,127 Amortization of definite-lived intangibles (2) (10,905 ) (10,945 ) Total operating income 19,800 16,182 Total other expense (24,099 ) (17,279 ) Loss before income taxes $ (4,299 ) $ (1,097 ) As of March 29, 2021 December 28, 2020 (In thousands) Segment Assets: PCB $ 1,549,531 $ 1,529,102 RF&S Components 225,233 227,990 Corporate and Other (1) 1,191,064 1,138,852 Total assets $ 2,965,828 $ 2,895,944 (1) Other represents SH E-MS and SZ results. (2) Amortization of definite-lived intangibles primarily relates to the PCB and RF&S Components reportable segments. For the quarters ended March 29, 2021 and March 30, 2020, $1,384 and $1,383, respectively, of amortization expense is included in cost of goods sold.
Net Sales	The Company markets and sells its products in approximately 46 countries. Other than in the United States and China, the Company does not conduct business in any country in which its net sales in that country exceed 10% of the Company’s total net sales. Net sales are as follows: Quarter Ended March 29, 2021 March 30, 2020 (In thousands) Net Sales: United States $ 268,467 $ 262,279 China 81,709 74,929 Other 176,256 160,438 Total net sales $ 526,432 $ 497,646

Restructuring Charges (Tables)

Restructuring Charges (Tables)	3 Months Ended
	Mar. 29, 2021
Restructuring And Related Activities [Abstract]
Summary of Restructuring Costs by Reportable Segment	The below table summarizes such restructuring costs by reportable segment, which are included as a component of general and administrative expenses in the consolidated condensed statements of operations, for the quarters ended March 29, 2021 and March 30, 2020: Quarter Ended March 29, 2021 Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ 342 $ 12 $ 354 Corporate and Other (1) 359 2,519 2,878 $ 701 $ 2,531 $ 3,232 Quarter Ended March 30, 2020 Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ — $ 13 $ 13 Corporate and Other (1) 309 6 315 $ 309 $ 19 $ 328 (1) Other represents SH E-MS and SZ results.
Accrued Restructuring Costs	Accrued restructuring costs are included as a component of other current liabilities in the consolidated condensed balance sheet. The below table shows the utilization of the accrued restructuring costs during the quarter ended March 29, 2021: Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Accrued as of December 28, 2020 $ 7,063 $ 319 $ 7,382 Charged to expense 701 2,531 3,232 Amount paid (4,629 ) (2,801 ) (7,430 ) Accrued as of March 29, 2021 $ 3,135 $ 49 $ 3,184

Nature of Operations and Basi_3

Nature of Operations and Basis of Presentation - Additional Information (Detail)	Apr. 29, 2020Facility	Mar. 29, 2021Segment	Dec. 28, 2020Segment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of reportable segments | Segment		2	3
ASU 2019-12
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in accounting principle, accounting standards update, adopted		true
Change in accounting principle, accounting standards update, adoption date		Dec. 29, 2020
Change in accounting principle, accounting standards update, immaterial effect		true
E-M Solutions
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of manufacturing facilities	3
E-M Solutions | Shanghai
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of manufacturing facilities	2
E-M Solutions | Shenzhen
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of manufacturing facilities	1

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details) - USD ($) $ in Thousands	Apr. 18, 2020	Apr. 17, 2020	Mar. 29, 2021	Mar. 30, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Depreciation expense related to the discontinued operations				$ 18,265
Definitive Equity Interests Purchase Agreement
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sale of subsidiaries of mobility business unit		$ 550,000
Estimated additional cash from sale of subsidiaries of mobility business unit		$ 95,000
Final purchase price from sale of subsidiaries of mobility business unit			$ 569,246
Additional cash from sale of subsidiaries of mobility business unit			$ 83,000
Transition Services Agreement
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Services provided period	24 months

Discontinued Operations - Sched

Discontinued Operations - Schedule of Components of Discontinued Operations of Statements of Operations (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 30, 2020USD ($)$ / shares
Discontinued Operations And Disposal Groups [Abstract]
Net sales	$ 113,174
Cost of goods sold	108,425
Gross profit	4,749
Operating expenses:
Selling and marketing	1,176
General and administrative	1,310
Research and development	147
Amortization of definite-lived intangibles	675
Total operating expenses	3,308
Operating income	1,441
Other (expense) income:
Interest expense	(223)
Other, net	1,571
Total other income, net	1,348
Income from discontinued operations before income taxes	2,789
Income tax provision	(743)
Income from discontinued operations, net of income taxes	$ 2,046
Earnings per share from discontinued operations:
Basic earnings per share | $ / shares	$ 0.02
Diluted earnings per share | $ / shares	$ 0.02

Components of Lease Expense (De

Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Leases [Abstract]
Operating lease cost	$ 2,208	$ 2,481
Variable lease cost	234	106
Short-term lease cost	$ 54	$ 229

Supplemental Cash Flow Informat

Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,159	$ 2,171
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	$ 284	$ 1,876

Supplemental Balance Sheet Info

Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 21,383	$ 24,340
Other current liabilities	$ 6,609	$ 8,144
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Operating lease liabilities	$ 15,658	$ 17,211
Total operating lease liabilities	$ 22,267	$ 25,355
Weighted average remaining lease term	4 years 4 months 24 days	4 years 2 months 12 days
Weighted average discount rate	3.29%	3.31%

Maturities of Operating Lease L

Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Leases [Abstract]
Less than one year	$ 7,214
1 - 2 years	5,015
2 - 3 years	4,309
3 - 4 years	3,370
4 - 5 years	2,123
Thereafter	1,902
Total lease payments	23,933
Less imputed interest	(1,666)
Total	$ 22,267	$ 25,355

Maturities of Operating Lease_2

Maturities of Operating Lease Liabilities (Parenthetical) (Detail)	Mar. 29, 2021USD ($)
Leases [Abstract]
Legally binding lease payments for leases signed but not yet commenced	$ 851,000

Revenues - Additional Informati

Revenues - Additional Information (Detail 1) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-03-30 $ in Thousands	Mar. 29, 2021USD ($)
Revenue From Contract With Customer [Line Items]
Transaction price allocated to remaining performance obligations	$ 12,850
Remaining performance obligation period	12 months

Revenues - Additional Informa_2

Revenues - Additional Information (Detail)	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Revenue From Contract With Customer [Line Items]
Remaining revenue performance obligation, percentage	100.00%
Transferred over Time
Revenue From Contract With Customer [Line Items]
Revenue from products and services transferred to customers, percentage	98.00%	98.00%
Transferred at Point in Time
Revenue From Contract With Customer [Line Items]
Revenue from products and services transferred to customers, percentage	2.00%	2.00%

Disaggregation of Revenue by Pr

Disaggregation of Revenue by Principal End Markets with the Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Disaggregation Of Revenue [Line Items]
Total Revenue	$ 526,432	$ 497,646
Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	186,545	184,414
Automotive
Disaggregation Of Revenue [Line Items]
Total Revenue	95,434	68,871
Cellular Phone
Disaggregation Of Revenue [Line Items]
Total Revenue		2,775
Data Center Computing
Disaggregation Of Revenue [Line Items]
Total Revenue	72,191	58,371
Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	91,876	94,582
Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	77,592	82,695
Other
Disaggregation Of Revenue [Line Items]
Total Revenue	2,794	5,938
Printed Circuit Board
Disaggregation Of Revenue [Line Items]
Total Revenue	510,486	474,002
Printed Circuit Board | Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	186,539	184,414
Printed Circuit Board | Automotive
Disaggregation Of Revenue [Line Items]
Total Revenue	91,792	61,858
Printed Circuit Board | Cellular Phone
Disaggregation Of Revenue [Line Items]
Total Revenue		2,775
Printed Circuit Board | Data Center Computing
Disaggregation Of Revenue [Line Items]
Total Revenue	71,759	58,114
Printed Circuit Board | Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	90,770	90,468
Printed Circuit Board | Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	66,938	70,433
Printed Circuit Board | Other
Disaggregation Of Revenue [Line Items]
Total Revenue	2,688	5,940
RF&S Components
Disaggregation Of Revenue [Line Items]
Total Revenue	12,690	9,441
RF&S Components | Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	6
RF&S Components | Data Center Computing
Disaggregation Of Revenue [Line Items]
Total Revenue	432	203
RF&S Components | Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	1,081	794
RF&S Components | Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	10,653	8,067
RF&S Components | Other
Disaggregation Of Revenue [Line Items]
Total Revenue	518	377
Other
Disaggregation Of Revenue [Line Items]
Total Revenue	3,256	14,203
Other | Automotive
Disaggregation Of Revenue [Line Items]
Total Revenue	3,642	7,013
Other | Data Center Computing
Disaggregation Of Revenue [Line Items]
Total Revenue		54
Other | Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	25	3,320
Other | Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	1	4,195
Other | Other
Disaggregation Of Revenue [Line Items]
Total Revenue	$ (412)	$ (379)

Schedule of Composition of Cert

Schedule of Composition of Certain Consolidated Condensed Financial Statement Captions (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Inventories:
Raw materials	$ 108,271	$ 103,890
Work-in-process	9,259	7,841
Finished goods	3,594	3,920
Inventories	121,124	115,651
Property, plant and equipment, net:
Land and land use rights	62,061	61,781
Buildings and improvements	402,361	398,540
Machinery and equipment	840,249	832,723
Furniture and fixtures and other	10,198	10,304
Construction-in-progress	36,911	33,191
Property, plant and equipment, gross	1,351,780	1,336,539
Less: Accumulated depreciation	(700,586)	(686,104)
Property, plant and equipment, net	651,194	650,435
Other current liabilities:
Sales returns and allowances	12,669	13,015
Income taxes payable	5,553	2,428
Warrant liabilities	4,070
Restructuring	3,184	7,382
Interest	3,051	7,157
Other	58,201	59,440
Other current liabilities	86,728	89,422
Other long-term liabilities:
Deferred income taxes	23,782	23,704
Derivative liabilities	12,579	14,968
Defined benefit pension plan liability	9,605	9,986
Other	26,455	25,167
Other long-term liabilities	$ 72,421	$ 73,825

Goodwill by Reportable Segment

Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Goodwill [Line Items]
Goodwill	$ 877,924
Accumulated impairment losses	(240,600)
Goodwill, net	637,324	$ 637,324
Printed Circuit Board
Goodwill [Line Items]
Goodwill	700,724
Accumulated impairment losses	(171,400)
Goodwill, net	529,324
RF&S Components
Goodwill [Line Items]
Goodwill	177,200
Accumulated impairment losses	(69,200)
Goodwill, net	$ 108,000

Definite-lived Intangibles (Det

Definite-lived Intangibles (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 29, 2021	Dec. 28, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 445,150	$ 445,150
Accumulated Amortization	(174,748)	(163,843)
Net Carrying Amount	270,402	281,307
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	397,500	397,500
Accumulated Amortization	(159,663)	(150,142)
Net Carrying Amount	$ 237,837	$ 247,358
Weighted Average Amortization Period	10 years 10 months 24 days	10 years 10 months 24 days
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 47,650	$ 47,650
Accumulated Amortization	(15,085)	(13,701)
Net Carrying Amount	$ 32,565	$ 33,949
Weighted Average Amortization Period	9 years 6 months	9 years 6 months

Definite-lived Intangibles - Ad

Definite-lived Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of definite-lived intangibles	$ 10,905	$ 10,945
Amortization of definite-lived intangibles included in cost of goods sold	$ 1,384	$ 1,383

Estimated Aggregate Amortizatio

Estimated Aggregate Amortization for Definite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Remaining 2021	$ 30,274
2022	38,631
2023	36,713
2024	29,713
2025	25,397
Thereafter	109,674
Net Carrying Amount	$ 270,402	$ 281,307

Long-term Debt (Detail)

Long-term Debt (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 29, 2021	Dec. 28, 2020	Mar. 10, 2021
Debt Instrument [Line Items]
Long-term debt, gross	$ 935,879	$ 850,879
Less: Long-term debt unamortized discount	(763)	(814)
Long-term debt unamortized debt issuance costs	(8,988)	(7,212)
Long-term debt, Carrying Amount	926,128	842,853
Long-term debt, less current maturities	926,128	842,853
Senior Notes Due March 2029
Debt Instrument [Line Items]
Long-term debt, gross	$ 500,000		$ 500,000
Debt instrument, interest rate	4.00%		4.00%
Term Loan Due September 2024
Debt Instrument [Line Items]
Long-term debt, gross	$ 405,879	405,879
Less: Long-term debt unamortized discount	$ (763)	$ (814)
Interest rate at period end	2.61%	2.65%
Senior Notes Due October 2025
Debt Instrument [Line Items]
Long-term debt, gross		$ 375,000
Debt instrument, interest rate		5.63%
U.S. Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Revolving loan		$ 40,000
Long-term debt unamortized debt issuance costs	$ (1,778)	$ (1,919)
Interest rate at period end		1.40%
Asia Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Revolving loan	$ 30,000	$ 30,000
Interest rate at period end	1.51%	1.55%

Long-term Debt (Parenthetical)

Long-term Debt (Parenthetical) (Detail)	3 Months Ended
	Mar. 29, 2021
Senior Notes Due March 2029
Debt Instrument [Line Items]
Long-term debt, maturity month and year	2029-03
Term Loan Due September 2024
Debt Instrument [Line Items]
Long-term debt, maturity month and year	2024-09
Senior Notes Due October 2025
Debt Instrument [Line Items]
Long-term debt, maturity month and year	2025-10
U.S. Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Long-term debt, maturity month and year	2024-06
Asia Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Long-term debt, maturity month and year	2024-06

Long-term Debt and Letters of_3

Long-term Debt and Letters of Credit - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 10, 2021	Mar. 29, 2021	Mar. 29, 2021	Dec. 28, 2020
Debt Instrument [Line Items]
Debt instrument amount		$ 935,879	$ 935,879	$ 850,879
Remaining unamortized debt issuance costs		$ 8,988	8,988	7,212
Loss on extinguishment of debt			$ 15,217
Maximum | Letters of Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding under U.S. ABL and Asia ABL, expiration period		2021-07
Weighted Average
Debt Instrument [Line Items]
Unamortized debt discount and debt issuance costs, amortization period			5 years 10 months 24 days
Term Loan Due September 2024
Debt Instrument [Line Items]
Debt principal prepayment				400,000
Debt instrument amount		$ 405,879	$ 405,879	405,879
Senior Notes Due 2029
Debt Instrument [Line Items]
Debt instrument amount	$ 500,000	$ 500,000	$ 500,000
Debt instrument, interest rate	4.00%	4.00%	4.00%
Long-term debt, maturity date	Mar. 1, 2029
Senior Notes Due 2025
Debt Instrument [Line Items]
Debt instrument amount				$ 375,000
Debt instrument, interest rate				5.63%
Early retirement of debt		$ 375,000
Loss on extinguishment of debt			$ 15,217
U.S. ABL Revolving Credit Facility
Debt Instrument [Line Items]
Repayment of debt		40,000
U.S. Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Remaining unamortized debt issuance costs		1,778	1,778	$ 1,919
U.S. Asset Based Lending Revolving Loan Due June 2024 | Letters of Credit Facility
Debt Instrument [Line Items]
Letter of credit outstanding		10,753	10,753
Debt instrument, available borrowing capacity		139,247	139,247
Asia Asset Based Lending Revolving Loan Due June 2024 | Letters of Credit Facility
Debt Instrument [Line Items]
Letter of credit outstanding		11,721	11,721
Debt instrument, available borrowing capacity		$ 108,279	$ 108,279

Long-term Debt and Letters of_4

Long-term Debt and Letters of Credit - Schedule of Remaining Unamortized Debt Discount and Debt Issuance Costs (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Debt Instrument [Line Items]
Debt Issuance Costs	$ 8,988	$ 7,212
Debt Discount	763	814
Senior Notes Due March 2029
Debt Instrument [Line Items]
Debt Issuance Costs	$ 6,462
Effective Interest Rate	4.19%
Term Loan Due September 2024
Debt Instrument [Line Items]
Debt Issuance Costs	$ 2,526	2,695
Debt Discount	$ 763	$ 814
Effective Interest Rate	4.66%	4.66%
Senior Notes Due October 2025
Debt Instrument [Line Items]
Debt Issuance Costs		$ 4,517
Effective Interest Rate		5.92%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 29, 2021USD ($)
Income Tax Disclosure [Abstract]
Change in valuation allowance	$ 0
Effective tax rate impacted by net discrete tax expense (benefit)	(383,000)
Tax on undistributed earnings	$ 0

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail)	May 15, 2018USD ($)	Mar. 29, 2021USD ($)	Mar. 30, 2020USD ($)	Mar. 29, 2021JPY (¥)	Dec. 28, 2020USD ($)	Dec. 28, 2020JPY (¥)
Derivative [Line Items]
Accumulated other comprehensive income (loss) will be reclassified into the statement of operations, net of tax, in the next 12 months		$ (8,092,000)
Interest Rate Swap
Derivative [Line Items]
Interest rate derivatives, at fair value, net	$ 0
Derivative, ineffectiveness		0	$ 0
Interest Rate Swap | Other Long-term Liabilities
Derivative [Line Items]
Interest rate derivative liability, at fair value		12,579,000
Interest Rate Swap | Interest expense
Derivative [Line Items]
Derivative instrument, increased interest expense		2,740,000	$ 1,175,000
Foreign Exchange Contracts
Derivative [Line Items]
Derivative, notional amount		$ 1,852,000		¥ 196,300,000	$ 1,181,000	¥ 125,000,000
1-Month LIBOR | Interest Rate Swap
Derivative [Line Items]
Derivative, maturity period	4 years
Derivative, notional amount	$ 400,000,000
Derivative, expiration date	Jun. 1, 2022
Derivative, fixed rate	2.84%

Summary of Fair Values of Deriv

Summary of Fair Values of Derivative Instruments in Consolidated Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Other Long-term Liabilities | Interest Rate Swap
Cash flow derivative instruments designated as hedges:
Cash flow derivative instruments designated as hedges, liability fair value	$ (12,579)	$ (14,968)
Prepaid Expenses and Other Current Assets | Foreign Exchange Contracts
Cash flow derivative instruments not designated as hedges:
Cash flow derivative instruments not designated as hedges, liability fair value		$ 28
Other Current Liabilities | Foreign Exchange Contracts
Cash flow derivative instruments not designated as hedges:
Cash flow derivative instruments designated as hedges, asset fair value	$ 56

Summary of Accumulated Other Co

Summary of Accumulated Other Comprehensive Loss Related to Derivatives Designated as Cash Flow Hedges (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Derivative Instruments Gain Loss [Line Items]
Loss Recognized in Other Comprehensive Loss	$ (263)	$ (6,018)
Interest Rate Swap | Interest expense
Derivative Instruments Gain Loss [Line Items]
Loss Recognized in Other Comprehensive Loss	(351)	(8,449)
Loss Reclassified into Income	$ (2,740)	$ (1,175)

Summary of Activity of Designat

Summary of Activity of Designated Cash Flow Hedges in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Derivative [Line Items]
Beginning balance	$ 1,444,009	$ 1,279,037
Ending balance	1,442,467	1,277,200
Gains (Losses) on Cash Flow Hedges
Derivative [Line Items]
Beginning balance	(11,231)	(9,617)
Changes in fair value loss, net of tax	(263)	(6,018)
Reclassification to earnings	2,052	860
Ending balance	$ (9,442)	$ (14,775)

Schedule of Accumulated Other C

Schedule of Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,444,009	$ 1,279,037
Other comprehensive income (loss), net of tax	1,786	(5,498)
Ending balance	1,442,467	1,277,200
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(24,827)
Other comprehensive loss before reclassifications	(3)
Other comprehensive income (loss), net of tax	(3)
Ending balance	(24,830)
Pension Obligation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,855)
Ending balance	(2,855)
(Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(11,231)	(9,617)
Other comprehensive loss before reclassifications	(263)	(6,018)
Reclassification to earnings	2,052	860
Other comprehensive income (loss), net of tax	1,789
Ending balance	(9,442)	(14,775)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(38,913)	(10,086)
Other comprehensive loss before reclassifications	(266)
Reclassification to earnings	2,052
Other comprehensive income (loss), net of tax	1,786	(5,498)
Ending balance	$ (37,127)	$ (15,584)

Significant Customers and Con_2

Significant Customers and Concentration of Credit Risk - Additional Information (Detail) - Customer	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Concentration Risk [Line Items]
Number of customers contributing to more than ten percent of revenue	1	0
Net Sales | Customer Concentration Risk
Concentration Risk [Line Items]
Percentage of net sales, accounted by one customer	13.00%

Carrying Amount and Estimated F

Carrying Amount and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities, non-current	$ 12,579	$ 14,968
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets, current		28
Derivative liabilities, current	56
Derivative liabilities, non-current	12,579	14,968
Warrant liabilities, current	4,070
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets, current		28
Derivative liabilities, current	56
Derivative liabilities, non-current	12,579	14,968
Warrant liabilities, current	4,070
Term Loan Due September 2024 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	402,590	402,370
Term Loan Due September 2024 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	406,387	407,909
Senior Notes Due October 2025 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		370,483
Senior Notes Due October 2025 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt		383,974
ABL Revolving Loans | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	30,000	70,000
ABL Revolving Loans | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	30,000	$ 70,000
Senior Notes Due March 2029 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	493,538
Senior Notes Due March 2029 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 493,425

Fair Value Measures - Additiona

Fair Value Measures - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 29, 2021USD ($)	Dec. 28, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 539,648	$ 451,565
Domestic Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	305,841
Foreign Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 233,807
Expected Term | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of expected team	3 months
Expected Volatility | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	35
Risk Free Interest Rate | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.032
Expected Dividend Yield | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0

Reconciliation of Numerator and

Reconciliation of Numerator and Denominator Used to Calculate Basic Earnings per Share and Diluted Earnings per Share from Continuing Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Earnings Per Share [Abstract]
Net loss from continuing operations	$ (3,192)	$ (3,220)
Basic weighted average shares	106,825	105,686
Diluted shares	106,825	105,686
Loss per share:
Basic	$ (0.03)	$ (0.03)
Diluted	$ (0.03)	$ (0.03)

Loss Per Share - Additional Inf

Loss Per Share - Additional Information (Detail) - $ / shares shares in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Share-based payment arrangement, option, exercise price range, lower range limit	$ 11.83	$ 9.54
Share-based payment arrangement, option, exercise price range, upper range limit	$ 16.60	$ 16.60
Stock Options | Exercise Prices Ranging from $11.83 to $16.60 Per Share
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share	60
Stock Options | Exercise Prices Ranging from $9.54 to $16.60 Per Share
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share		100
Restricted Stock Units (RSUs) | Exercise Prices Ranging from $11.83 to $16.60 Per Share
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share	2,897
Restricted Stock Units (RSUs) | Exercise Prices Ranging from $9.54 to $16.60 Per Share
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share		2,459
Performance-Based Restricted Stock Units (PRUs) | Exercise Prices Ranging from $11.83 to $16.60 Per Share
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share	289
Performance-Based Restricted Stock Units (PRUs) | Exercise Prices Ranging from $9.54 to $16.60 Per Share
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share		216

Amounts Recognized in Consolida

Amounts Recognized in Consolidated Financial Statements of Operations with Respect to Stock Based Compensation Plan (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 4,209	$ 4,835
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	1,165	850
Selling and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	646	451
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	2,355	3,477
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 43	$ 57

Summary of Unrecognized Compens

Summary of Unrecognized Compensation Costs (Detail) $ in Thousands	3 Months Ended
	Mar. 29, 2021USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 21,186
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 17,102
Remaining Weighted Average Recognition Period (years)	1 year 4 months 24 days
Performance-Based Restricted Stock Units (PRUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 3,974
Remaining Weighted Average Recognition Period (years)	1 year 4 months 24 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 110
Remaining Weighted Average Recognition Period (years)	1 year 1 month 6 days

Segment Information - Additiona

Segment Information - Additional Information (Detail)	Apr. 29, 2020Facility	Mar. 29, 2021SegmentCountry	Dec. 28, 2020Segment
Segment Reporting Information [Line Items]
Number of reportable segments | Segment		2	3
Number of countries the parent company markets and sells its products | Country		46
Percentage of total net sales, if exceed, the company does not conduct business		10.00%
E-M Solutions
Segment Reporting Information [Line Items]
Number of manufacturing facilities	3
E-M Solutions | Shanghai
Segment Reporting Information [Line Items]
Number of manufacturing facilities	2
E-M Solutions | Shenzhen
Segment Reporting Information [Line Items]
Number of manufacturing facilities	1

Reconciliation of Operating Inc

Reconciliation of Operating Income (Loss) from Segments to Consolidated By Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 526,432	$ 497,646
Operating (loss) income	19,800	16,182
Amortization of definite-lived intangibles	(10,905)	(10,945)
Total other expense	(24,099)	(17,279)
Loss before income taxes	(4,299)	(1,097)
Printed Circuit Board
Segment Reporting Information [Line Items]
Net sales	510,486	474,002
RF&S Components
Segment Reporting Information [Line Items]
Net sales	12,690	9,441
Other
Segment Reporting Information [Line Items]
Net sales	3,256	14,203
Operating Segment
Segment Reporting Information [Line Items]
Operating (loss) income	30,705	27,127
Operating Segment | Printed Circuit Board
Segment Reporting Information [Line Items]
Net sales	510,486	474,002
Operating (loss) income	57,232	60,238
Operating Segment | RF&S Components
Segment Reporting Information [Line Items]
Net sales	12,690	9,441
Operating (loss) income	3,862	1,908
Operating Segment | Other
Segment Reporting Information [Line Items]
Net sales	3,256	14,203
Corporate and Other
Segment Reporting Information [Line Items]
Operating (loss) income	$ (30,389)	$ (35,019)

Reconciliation of Assets from S

Reconciliation of Assets from Segment to Consolidated (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Dec. 28, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,965,828	$ 2,895,944
Operating Segment | Printed Circuit Board
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,549,531	1,529,102
Operating Segment | RF&S Components
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	225,233	227,990
Corporate and Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,191,064	$ 1,138,852

Reconciliation of Operating I_2

Reconciliation of Operating Income (Loss) from Segments to Consolidated By Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Segment Reporting Information [Line Items]
Amortization of definite-lived intangibles	$ 1,384	$ 1,383
Printed Circuit Board and RF&S Components
Segment Reporting Information [Line Items]
Amortization of definite-lived intangibles	$ 1,384	$ 1,383

Net Sales (Detail)

Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2021	Mar. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 526,432	$ 497,646
United States
Segment Reporting Information [Line Items]
Net sales	268,467	262,279
China
Segment Reporting Information [Line Items]
Net sales	81,709	74,929
Other
Segment Reporting Information [Line Items]
Net sales	$ 176,256	$ 160,438

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail) $ in Thousands	Mar. 29, 2021USD ($)	Apr. 29, 2020Facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges | $	$ 19,272
Accelerated depreciation expense | $	$ 6,702
E-M Solutions
Restructuring Cost and Reserve [Line Items]
Number of manufacturing facilities		3
E-M Solutions | Shanghai
Restructuring Cost and Reserve [Line Items]
Number of manufacturing facilities		2
E-M Solutions | Shenzhen
Restructuring Cost and Reserve [Line Items]
Number of manufacturing facilities		1

Summary of Restructuring Costs

Summary of Restructuring Costs (Detail) - USD ($) $ in Thousands	Mar. 29, 2021	Mar. 29, 2021	Mar. 30, 2020
Reportable Segment:
Restructuring charges	$ 19,272
General and administrative
Reportable Segment:
Restructuring charges		$ 3,232	$ 328
General and administrative | Employee Separation/ Severance
Reportable Segment:
Restructuring charges		701	309
General and administrative | Contract Termination and Other Costs
Reportable Segment:
Restructuring charges		2,531	19
General and administrative | Reportable Segment | Printed Circuit Board
Reportable Segment:
Restructuring charges		354	13
General and administrative | Reportable Segment | Employee Separation/ Severance | Printed Circuit Board
Reportable Segment:
Restructuring charges		342
General and administrative | Reportable Segment | Contract Termination and Other Costs | Printed Circuit Board
Reportable Segment:
Restructuring charges		12	13
General and administrative | Corporate and Other
Reportable Segment:
Restructuring charges		2,878	315
General and administrative | Corporate and Other | Employee Separation/ Severance
Reportable Segment:
Restructuring charges		359	309
General and administrative | Corporate and Other | Contract Termination and Other Costs
Reportable Segment:
Restructuring charges		$ 2,519	$ 6

Accrued Restructuring Costs (De

Accrued Restructuring Costs (Detail) $ in Thousands	3 Months Ended
	Mar. 29, 2021USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 7,382
Charged to expense	3,232
Amount paid	(7,430)
Ending balance	3,184
Employee Separation/ Severance
Restructuring Cost and Reserve [Line Items]
Beginning balance	7,063
Charged to expense	701
Amount paid	(4,629)
Ending balance	3,135
Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Beginning balance	319
Charged to expense	2,531
Amount paid	(2,801)
Ending balance	$ 49