TTM (TTMI) 10-Q 5 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 28, 2020	Nov. 02, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 28, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Trading Symbol	TTMI
Entity Registrant Name	TTM TECHNOLOGIES, INC.
Entity Central Index Key	0001116942
Current Fiscal Year End Date	--12-28
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		106,741,736
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	Sep. 28, 2020	Dec. 30, 2019
Current assets:
Cash and cash equivalents	$ 413,310	$ 379,818
Restricted cash	249,975
Accounts receivable, net	374,971	503,598
Contract assets	281,663	254,600
Inventories	127,588	113,753
Current assets held for sale		67,572
Prepaid expenses and other current assets	38,670	23,343
Total current assets	1,486,177	1,342,684
Property, plant and equipment, net	654,837	678,201
Operating lease right-of-use assets	22,993	22,173
Goodwill	637,324	706,524
Definite-lived intangibles, net	292,280	325,680
Non-current assets held for sale		425,597
Deposits and other non-current assets	54,803	60,074
Total assets	3,148,414	3,560,933
Current liabilities:
Short-term debt, including current portion of long-term debt	249,975	249,975
Accounts payable	341,505	329,866
Contract liabilities	2,999	3,838
Accrued salaries, wages and benefits	77,525	85,114
Current liabilities held for sale		185,391
Other current liabilities	115,318	92,482
Total current liabilities	787,322	946,666
Long-term debt, net of discount and issuance costs	840,023	1,225,962
Operating lease liabilities	15,885	15,413
Non-current liabilities held for sale		1,530
Other long-term liabilities	105,881	92,325
Total long-term liabilities	961,789	1,335,230
Commitments and contingencies (Note 14)
Equity:
Common stock, $0.001 par value; 300,000 shares authorized, 106,742 and 105,510 shares issued and outstanding as of September 28, 2020 and December 30, 2019, respectively	107	106
Additional paid-in capital	826,859	814,708
Retained earnings	612,884	474,309
Accumulated other comprehensive loss	(40,547)	(10,086)
Total stockholders’ equity	1,399,303	1,279,037
Total liabilities and stockholders' equity	$ 3,148,414	$ 3,560,933

Consolidated Condensed Balanc_2

Consolidated Condensed Balance Sheets (Parenthetical) - $ / shares	Sep. 28, 2020	Dec. 30, 2019
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	106,742,000	105,510,000
Common stock, shares outstanding	106,742,000	105,510,000

Consolidated Condensed Statemen

Consolidated Condensed Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 513,576	$ 534,173	$ 1,581,520	$ 1,597,495
Cost of goods sold	424,298	448,915	1,310,470	1,320,563
Gross profit	89,278	85,258	271,050	276,932
Operating expenses:
Selling and marketing	15,895	17,153	48,033	51,611
General and administrative	29,086	33,116	110,476	95,267
Research and development	5,223	4,358	15,166	13,570
Amortization of definite-lived intangibles	10,126	9,500	29,249	36,245
Impairment of goodwill	69,200		69,200
Total operating expenses	129,530	64,127	272,124	196,693
Operating (loss) income	(40,252)	21,131	(1,074)	80,239
Other (expense) income:
Interest expense	(20,204)	(20,423)	(58,557)	(62,111)
Other, net	(2,316)	5,875	641	8,525
Total other expense, net	(22,520)	(14,548)	(57,916)	(53,586)
(Loss) income from continuing operations before income taxes	(62,772)	6,583	(58,990)	26,653
Income tax benefit (provision)	1,300	(4,190)	3,644	(5,529)
Net (loss) income from continuing operations	(61,472)	2,393	(55,346)	21,124
Income (loss) from discontinued operations, net of income taxes	20,021	13,477	193,921	(5,082)
Net (loss) income	$ (41,451)	$ 15,870	$ 138,575	$ 16,042
(Loss) earnings per share:
Basic (loss) earnings per share from continuing operations	$ (0.58)	$ 0.02	$ (0.52)	$ 0.20
Basic earnings (loss) per share from discontinued operations	0.19	0.13	1.83	(0.05)
Basic (loss) earnings per share	(0.39)	0.15	1.31	0.15
Diluted (loss) earnings per share from continuing operations	(0.58)	0.02	(0.52)	0.20
Diluted earnings (loss) per share from discontinued operations	0.19	0.13	1.83	(0.05)
Diluted (loss) earnings per share	$ (0.39)	$ 0.15	$ 1.31	$ 0.15

Consolidated Condensed Statem_2

Consolidated Condensed Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (41,451)	$ 15,870	$ 138,575	$ 16,042
Other comprehensive income (loss), net of tax:
Pension obligation adjustments, net	(17)	(23)	4	(4)
Reclassification adjustment for foreign currency translation	(346)		(346)
Derecognition of foreign currency translation adjustments due to sale of Mobility business unit			(27,341)
Foreign currency translation adjustments, net	1,049	(954)	778	(925)
Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit			384
Net unrealized losses on cash flow hedges:
Unrealized loss on effective cash flow hedges during the period, net	(655)	(1,833)	(8,667)	(8,164)
Loss realized in the statement of operations, net	2,098	554	4,727	1,128
Net	1,443	(1,279)	(3,940)	(7,036)
Other comprehensive income (loss), net of tax	2,129	(2,256)	(30,461)	(7,965)
Comprehensive (loss) income, net of tax	$ (39,322)	$ 13,614	$ 108,114	$ 8,077

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. 31, 2018	$ 1,227,087	$ 104	$ 797,895	$ 433,008	$ (3,920)
Beginning balance (in shares) at Dec. 31, 2018		103,687
Net income (loss)	(3,252)			(3,252)
Other comprehensive income (loss)	(901)				(901)
Redemption of convertible notes, net	(1)		(1)
Issuance of common stock for performance-based restricted stock units (in shares)		694
Issuance of common stock for restricted stock units		$ 1	(1)
Issuance of common stock for restricted stock units (in shares)		1,040
Stock-based compensation	3,926		3,926
Ending balance at Apr. 01, 2019	1,226,859	$ 105	801,819	429,756	(4,821)
Ending balance (in shares) at Apr. 01, 2019		105,421
Beginning balance at Dec. 31, 2018	1,227,087	$ 104	797,895	433,008	(3,920)
Beginning balance (in shares) at Dec. 31, 2018		103,687
Net income (loss)	16,042
Other comprehensive income (loss)	(7,965)
Ending balance at Sep. 30, 2019	1,247,353	$ 105	810,083	449,050	(11,885)
Ending balance (in shares) at Sep. 30, 2019		105,493
Beginning balance at Apr. 01, 2019	1,226,859	$ 105	801,819	429,756	(4,821)
Beginning balance (in shares) at Apr. 01, 2019		105,421
Net income (loss)	3,424			3,424
Other comprehensive income (loss)	(4,808)				(4,808)
Issuance of common stock for restricted stock units (in shares)		70
Stock-based compensation	3,602		3,602
Ending balance at Jul. 01, 2019	1,229,077	$ 105	805,421	433,180	(9,629)
Ending balance (in shares) at Jul. 01, 2019		105,491
Net income (loss)	15,870			15,870
Other comprehensive income (loss)	(2,256)				(2,256)
Issuance of common stock for restricted stock units (in shares)		2
Stock-based compensation	4,662		4,662
Ending balance at Sep. 30, 2019	1,247,353	$ 105	810,083	449,050	(11,885)
Ending balance (in shares) at Sep. 30, 2019		105,493
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 income (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. 30, 2019	1,279,037	$ 106	814,708	474,309	(10,086)
Beginning balance (in shares) at Dec. 30, 2019		105,510
Net income (loss)	138,575
Other comprehensive income (loss)	(30,461)				(30,461)
Ending balance at Sep. 28, 2020	1,399,303	$ 107	826,859	612,884	(40,547)
Ending balance (in shares) at Sep. 28, 2020		106,742
Beginning balance at Mar. 30, 2020	1,277,200	$ 106	819,543	473,135	(15,584)
Beginning balance (in shares) at Mar. 30, 2020		106,217
Net income (loss)	181,200			181,200
Other comprehensive income (loss)	(27,092)				(27,092)
Issuance of common stock for restricted stock units		$ 1	(1)
Issuance of common stock for restricted stock units (in shares)		484
Stock-based compensation	2,647		2,647
Ending balance at Jun. 29, 2020	1,433,955	$ 107	822,189	654,335	(42,676)
Ending balance (in shares) at Jun. 29, 2020		106,701
Net income (loss)	(41,451)			(41,451)
Other comprehensive income (loss)	2,129				2,129
Exercise of stock options	191		191
Exercise of stock options (in shares)		20
Issuance of common stock for restricted stock units (in shares)		21
Stock-based compensation	4,479		4,479
Ending balance at Sep. 28, 2020	$ 1,399,303	$ 107	$ 826,859	$ 612,884	$ (40,547)
Ending balance (in shares) at Sep. 28, 2020		106,742

Consolidated Condensed Statem_4

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 138,575	$ 16,042
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	97,172	124,556
Amortization of definite-lived intangible assets	34,209	41,807
Amortization of debt discount and issuance costs	14,488	10,764
Deferred income taxes	8,039	(2,453)
Stock-based compensation	11,961	12,190
Impairment of goodwill	69,200
Gain on sale of the Mobility business unit	(237,253)
Other	(242)	(2,592)
Changes in operating assets and liabilities:
Accounts receivable, net	128,681	(6,777)
Contract assets	(33,500)	19,199
Inventories	(10,557)	(16,947)
Prepaid expenses and other current assets	(15,008)	(6,049)
Accounts payable	15,902	21,435
Contract liabilities	(839)	(473)
Accrued salaries, wages and benefits	(11,804)	(12,374)
Other current liabilities	22,661	(16,539)
Net cash provided by operating activities	231,685	181,789
Cash flows from investing activities:
Proceeds from sale of the Mobility business unit, net of cash disposed	507,466
Purchase of property, plant and equipment and other assets	(84,042)	(95,372)
Proceeds from sale of property, plant and equipment and other assets	154	6,382
Other	(623)
Net cash provided by (used in) investing activities	422,955	(88,990)
Cash flows from financing activities:
Repayment of long-term debt borrowing	(400,000)	(30,000)
Proceeds from exercise of stock options	191
Payment of debt issuance costs		(1,639)
Redemption of convertible notes		(10)
Other	7,321
Net cash used in financing activities	(392,488)	(31,649)
Effect of foreign currency exchange rates on cash, cash equivalents, and restricted cash	979	(921)
Net increase in cash, cash equivalents, and restricted cash	263,131	60,229
Cash, cash equivalents, and restricted cash at beginning of period	400,154	256,360
Cash, cash equivalents, and restricted cash at end of period	663,285	316,589
Cash, cash equivalents, and restricted cash in assets held for sale		(20,230)
Cash, cash equivalents, and restricted cash as presented on the consolidated condensed balance sheet	663,285	296,359
Supplemental cash flow information:
Cash paid, net for interest	40,540	58,319
Cash paid, net for income taxes	15,856	12,367
Net cash provided by operating activities from discontinued operations	39,462	12,218
Net cash provided by (used in) investing activities from discontinued operations	497,916	(20,356)
Supplemental disclosure of noncash investing activities:
Property, plant and equipment recorded in accounts payable	$ 26,914	66,681
Supplemental disclosure of noncash investing activities from discontinued operations:
Property, plant and equipment recorded in accounts payable		$ 10,495

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 28, 2020
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 and manufacturing solution enables 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, 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). Prior to the closing of the sale of the Company’s Mobility business unit, all assets and liabilities attributable to the Mobility business unit have been aggregated under the captions “Current assets held for sale”, “Non-current assets held for sale”, “Current liabilities held for sale” and “Non-current liabilities held for sale”. 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”. Prior year results have been recast to conform with the current presentation. 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 Certain prior year amounts in the consolidated condensed financial statements have been reclassified due to the sale of the Company’s Mobility business unit. Refer to Note 2, Discontinued Operations During the quarter ended September 28, 2020, the Company’s RF and Specialty Components (RF&S Components) operating segment met the quantitative threshold for separate presentation of a reportable segment. In prior periods, the Company had two reportable segments: PCB and E-M Solutions. The RF&S Components reportable segment was previously aggregated with the PCB reportable segment. As a result, certain prior year amounts and prior quarters within the current year have been reclassified to conform with this new presentation. Further, in 2020, the Company began presenting research and development expenses as a separate line item on the consolidated condensed statements of operations to better align with similar presentation made by peers and to provide additional disclosure that is meaningful for investors. The prior year consolidated condensed statements of operations were adjusted to conform with this new presentation. Research and development expense were previously presented within general and administrative expense on the consolidated condensed statements of operations. Immaterial Correction of Error During the quarter ended September 28, 2020, the Company paid for certain transaction costs related to the sale of the Mobility business unit totaling $11,043. This should have been recorded as an expense, which would have reduced the gain on sale of Mobility business unit, during the quarter ended June 29, 2020. The Company overstated both the income from discontinued operations, net of income taxes and net income by $11,043, both basic earnings per share from discontinued operations and basic earnings per share of $0.10 and $0.11 in the quarter and two quarters ended June 29, 2020, respectively, and both diluted earnings per share from discontinued operations and diluted earnings per share of $0.10 in the quarter and two quarters ended June 29, 2020. Further, total current liabilities were understated by $11,043 and retained earnings were overstated by $11,043 as of June 29, 2020. Management concluded that this error was not material to the consolidated condensed financial statements for the quarter and two quarters ended June 29, 2020. Prior period amounts have been revised to correct the error. Recently Adopted and Issued Accounting Standards Recently Adopted Accounting Standards In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Recently Issued Accounting Standards Not Yet Adopted In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20)—Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 28, 2020
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 also 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. 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 will 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. Prior year results have been recast to conform with the current presentation. The following table summarizes the results of Mobility operations for each period prior to sale: Quarter Ended Three Quarters Ended September 28, September 30, September 28, September 30, 2020 2019 2020 2019 (In thousands, except per share data) Net sales $ — $ 182,644 $ 143,951 $ 372,560 Cost of goods sold — 164,068 136,800 372,358 Gross profit — 18,576 7,151 202 Operating expenses: Selling and marketing — 1,247 1,461 3,557 General and administrative — 1,424 2,317 4,166 Research and development — — 147 — Amortization of definite-lived intangibles — 675 809 2,023 Total operating expenses — 3,346 4,734 9,746 Operating income (loss) — 15,230 2,417 (9,544 ) Other (expense) income: Interest expense — (145 ) (223 ) (1,016 ) Gain on sale of the Mobility business unit — — 237,253 — Other, net — 2,251 1,160 3,692 Total other income, net — 2,106 238,190 2,676 Income (loss) from discontinued operations before income taxes — 17,336 240,607 (6,868 ) Income tax benefit (provision) 20,021 (3,859 ) (46,686 ) 1,786 Income (loss) from discontinued operations, net of income taxes $ 20,021 $ 13,477 $ 193,921 $ (5,082 ) Earnings (loss) per share from discontinued operations: Basic earnings (loss) per share $ 0.19 $ 0.13 $ 1.83 $ (0.05 ) Diluted earnings (loss) per share $ 0.19 $ 0.13 $ 1.83 $ (0.05 ) There was no depreciation expense related to the discontinued operations for the quarter ended September 28, 2020 and depreciation expense for the quarter ended September 30, 2019 was $18,704. Depreciation expense related to the discontinued operations for the three quarters ended September 28, 2020 and September 30, 2019 was $21,382 During the quarter and three quarters ended September 2 8 , 2020, the Company’s income tax expense related to the discontinued operations was impacted by a net discrete tax benefit of $ and a net discrete tax expense of $ , respectively . As a result of the sale of the Mobility business unit, the discrete income tax benefit during the quarter ended September 28, 2020 is due to recognition of additional Internal Revenue Code (IRC) Section 250 deduction and foreign tax credit benefits. The net income tax expense for the three quarters ended September 28, 2020 is related mainly to (i) China withholding tax related to gain on sale, (ii) U.S. income tax related to Global Intangible Low Taxed Income (GILTI) inclusion net of IRC Section 250 deduction and foreign tax credits, and offset by (iii) release of U.S. uncertain tax positions. Proceeds from the sale of the Company’s Mobility business unit have been presented in the consolidated condensed statements of cash flows within net cash provided by investing activities from discontinued operations. The following is a reconciliation of the gain recorded for the sale of the Company’s Mobility business unit (in thousands) Net proceeds from the sale of the Mobility business unit (1) $ 569,246 Mobility business unit assets: Cash and cash equivalents 12,513 Restricted cash 35,412 Accounts receivable, net 12 Contract assets 40,072 Inventories 4,988 Prepaid expenses and other current assets 4,593 Property, plant and equipment, net 328,648 Goodwill 68,267 Definite-lived intangibles, net 5,520 Deposits and other non-current assets 6,291 Total Mobility business unit assets 506,316 Mobility business unit liabilities: Accounts payable 142,636 Accrued salaries, wages and benefits 9,392 Other current liabilities 8,890 Other long-term liabilities 303 Total Mobility business unit liabilities 161,221 Derecognition of foreign currency translation adjustments and unrealized losses on cash flow hedges recorded in accumulated other comprehensive loss 26,957 Other transaction costs incurred as part of the sale of the Mobility business unit (2) 13,855 Gain on sale of the Mobility business unit before income taxes $ 237,253 (1) Net proceeds from the sale of the Mobility business unit are net of customary purchase price adjustments. (2) Costs directly incurred as a result of the sale of the Company’s Mobility business unit, including bank fees, legal fees, professional fees, and other costs.

Leases

Leases	9 Months Ended
	Sep. 28, 2020
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 Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands) Operating lease cost $ 2,333 $ 2,202 $ 7,041 $ 6,367 Variable lease cost 133 137 376 398 Short-term lease cost 84 95 482 280 Supplemental cash flow information related to leases was as follows: Three Quarters Ended September 28, 2020 September 30, 2019 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,636 $ 6,240 Right-of-use assets obtained in exchange for new lease obligations: Operating leases 6,559 13,058 Supplemental balance sheet information related to leases was as follows: As of September 28, 2020 December 30, 2019 (In thousands) Operating lease right-of-use assets $ 22,993 $ 22,173 Other current liabilities 7,945 7,111 Operating lease liabilities 15,885 15,413 Total operating lease liabilities $ 23,830 $ 22,524 As of September 28, 2020 December 30, 2019 Weighted average remaining lease term 4.1 years 4.4 years Weighted average discount rate 3.53 % 3.92 % Maturities of operating lease liabilities were as follows (1) (In thousands) Less than one year $ 9,309 1 - 2 years 5,114 2 - 3 years 4,030 3 - 4 years 3,011 4 - 5 years 2,046 Thereafter 2,148 Total lease payments 25,658 Less imputed interest (1,828 ) Total $ 23,830 (1) Excludes $969 of legally binding minimum lease payments for leases signed but not yet commenced.

Revenues

Revenues	9 Months Ended
	Sep. 28, 2020
Revenue From Contract With Customer [Abstract]
Revenues	(4) Revenues As of September 28, 2020, the aggregate amount of the transaction price allocated to remaining performance obligations for long-term contracts was $19,606. The Company expects to recognize revenue on approximately 86% of the remaining performance obligations for the Company’s long-term contracts over the next twelve months with the remaining amount recognized thereafter. The remaining performance obligations for the Company’s short-term contracts are expected to be recognized within one year. 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 quarter and three quarters ended September 28, 2020. Revenue from products and services transferred to customers over time and at a point in time accounted for 97% 3% The following tables represent a disaggregation of revenue by principal end markets with the reportable segments: Quarter Ended September 28, 2020 Quarter Ended September 30, 2019 PCB RF&S Components E-M Solutions Total PCB RF&S Components E-M Solutions Total End Markets (In thousands) Aerospace and Defense $ 182,709 $ 180 $ 16 $ 182,905 $ 170,651 $ 729 $ 1 $ 171,381 Automotive 64,375 — 8,891 73,266 72,597 — 39,559 112,156 Cellular Phone 39 — — 39 3,512 — — 3,512 Computing/Storage/ Peripherals 62,606 186 30 62,822 57,367 592 72 58,031 Medical/Industrial/ Instrumentation 92,059 742 2,769 95,570 84,178 705 5,775 90,658 Networking/Communications 55,905 7,203 27,185 90,293 58,782 7,971 22,746 89,499 Other 5,971 3,431 (721 ) 8,681 5,729 3,647 (440 ) 8,936 Total $ 463,664 $ 11,742 $ 38,170 $ 513,576 $ 452,816 $ 13,644 $ 67,713 $ 534,173 Three Quarters Ended September 28, 2020 Three Quarters Ended September 30, 2019 PCB RF&S Components E-M Solutions Total PCB RF&S Components E-M Solutions Total End Markets (In thousands) Aerospace and Defense $ 555,771 $ 189 $ 36 $ 555,996 $ 510,210 $ 777 $ 367 $ 511,354 Automotive 183,896 — 27,816 211,712 227,239 — 83,317 310,556 Cellular Phone 1,203 — — 1,203 5,416 — — 5,416 Computing/Storage/ Peripherals 192,275 663 170 193,108 170,914 1,373 261 172,548 Medical/Industrial/ Instrumentation 292,794 2,336 9,714 304,844 246,889 2,629 23,583 273,101 Networking/ Communications 178,428 19,173 82,429 280,030 188,069 37,192 72,011 297,272 Other 25,262 10,913 (1,548 ) 34,627 18,025 9,754 (531 ) 27,248 Total $ 1,429,629 $ 33,274 $ 118,617 $ 1,581,520 $ 1,366,762 $ 51,725 $ 179,008 $ 1,597,495

Composition of Certain Consolid

Composition of Certain Consolidated Condensed Financial Statement Captions	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 December 30, 2019 (In thousands) Inventories: Raw materials $ 116,090 $ 97,660 Work-in-process 8,059 10,898 Finished goods 3,439 5,195 $ 127,588 $ 113,753 Property, plant and equipment, net: Land and land use rights $ 62,009 $ 62,009 Buildings and improvements 397,361 381,980 Machinery and equipment 833,790 777,916 Furniture and fixtures and other 10,461 10,329 Construction-in-progress 27,604 58,195 1,331,225 1,290,429 Less: Accumulated depreciation (676,388 ) (612,228 ) $ 654,837 $ 678,201 Other current liabilities: Income taxes payable $ 14,489 $ 13,035 Interest 13,739 8,893 Sales return and allowances 12,754 13,544 Restructuring 11,695 502 Other 62,641 56,508 $ 115,318 $ 92,482

Goodwill

Goodwill	9 Months Ended
	Sep. 28, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	(6) Goodwill As of September 28, 2020 and December 30, 2019, goodwill by reportable segment was as follows: PCB RF&S Components Total (In thousands) Balance as of December 30, 2019 Goodwill $ 700,724 $ 177,200 $ 877,924 Accumulated impairment loss (171,400 ) — (171,400 ) 529,324 177,200 706,524 Impairment loss during the three quarters ended September 28, 2020 — (69,200 ) (69,200 ) Balance as of September 28, 2020 Goodwill 700,724 177,200 877,924 Accumulated impairment loss (171,400 ) (69,200 ) (240,600 ) $ 529,324 $ 108,000 $ 637,324 The Company evaluates its goodwill on an annual basis during its fourth fiscal quarter and at other times when events or changes in circumstances – such as significant adverse changes in the business climate or operating results or changes in management strategy, coupled with a decline in the market price of its stock and market capitalization – indicate that there may be a potential impairment. During the third quarter of 2020, the Company determined that there was a permanent loss of a key customer in the RF&S Components reporting unit that coupled with the impact of COVID-19, resulted in lower than anticipated results and continued decline in sales. The Company considered these factors to be indicators of potential impairment requiring the Company to test the related goodwill for impairment. As of September 28, 2020, the Company completed a quantitative goodwill impairment analysis related to its RF&S Components reporting unit by comparing the fair value of the reporting unit with its carrying amount. The Company determined the fair value of the reporting unit by using both a discounted cash flow (DCF) and a market approach. Under the market approach, the Company used revenue and earnings multiples based on comparable industry multiples to estimate the fair value of the reporting unit. Under the DCF approach, the Company estimated the future cash flows, as well as selected a risk-adjusted discount rate to measure the present value of the anticipated cash flows. When determining future cash flow estimates, the Company considered historical results adjusted to reflect current and anticipated future operating conditions. The Company estimated cash flows for the reporting unit over a discrete period and a terminal period (considering expected long-term growth rates and trends). Based on its analysis, the Company determined that the fair value of the RF&S Components reporting unit was less than its carrying value and recorded a non-cash goodwill impairment charge of $69,200 during the quarter ended September 28, 2020. If the Company’s future cash flow projections and other fair value assumptions for its reporting unit change, the Company may be subject to potential additional impairment in subsequent quarters. Estimating the fair value of the reporting unit requires the Company to make assumptions and estimates in such areas as future economic conditions, industry-specific conditions, product pricing, and necessary capital expenditures. The use of different assumptions or estimates for future cash flows, discount rates, or terminal growth rates could produce substantially different estimates of the fair value of the reporting unit.

Definite-lived Intangibles

Definite-lived Intangibles	9 Months Ended
	Sep. 28, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Definite-lived Intangibles	(7) Definite-lived Intangibles As of September 28, 2020 and December 30, 2019, the components of definite-lived intangibles were as follows: Gross Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period (In thousands) (In years) September 28, 2020 Customer relationships $ 397,500 $ (140,552 ) $ 256,948 10.9 Technology 47,650 (12,318 ) 35,332 9.5 $ 445,150 $ (152,870 ) $ 292,280 December 30, 2019 Customer relationships $ 396,270 $ (111,272 ) $ 284,998 11.0 Technology 39,500 (8,064 ) 31,436 9.4 Acquired intangibles from acquisition in 2019 Customer relationships 1,230 (31 ) 1,199 5.0 Technology 8,150 (103 ) 8,047 10.0 $ 445,150 $ (119,470 ) $ 325,680 Definite-lived intangibles are generally amortized using the straight-line method of amortization over the estimated useful life. Amortization expense was $11,510 and $10,680 for the quarters ended September 28, 2020 and September 30, 2019, respectively, and $33,400 and $39,784 for the three quarters ended September 28, 2020 and September 30, 2019, respectively. For the quarter and three quarters ended September 28, 2020, $1,384 and $4,151, respectively, of amortization expense is included in cost of goods sold. For the quarter and three quarters ended September 30, 2019, $1,180 and $3,539, 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 2020 $ 10,973 2021 41,179 2022 38,631 2023 36,713 2024 29,713 Thereafter 135,071 $ 292,280

Long-term Debt and Letters of C

Long-term Debt and Letters of Credit	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 and December 30, 2019: Interest Rate as of September 28, 2020 Principal Outstanding as of September 28, 2020 Interest Rate as of December 30, 2019 Principal Outstanding as of December 30, 2019 (In thousands) Term Loan due September 2024 2.65 % $ 405,879 4.28 % $ 805,879 Senior Notes due October 2025 5.63 375,000 5.63 375,000 Convertible Senior Notes due December 2020 1.75 249,975 1.75 249,975 U.S. ABL Revolving Loan due June 2024 1.40 40,000 3.03 40,000 Asia ABL Revolving Loan due June 2024 1.55 30,000 3.18 30,000 1,100,854 1,500,854 Less: Long-term debt unamortized discount (3,054 ) (11,943 ) Long-term debt unamortized debt issuance costs (7,802 ) (12,974 ) 1,089,998 1,475,937 Less: current maturities (249,975 ) (249,975 ) Long-term debt, less current maturities $ 840,023 $ 1,225,962 As of September 28, 2020, the Company’s restricted cash balance of $249,975 consisted of a specific deposit account to be used for principal payment on the Convertible Senior Notes due December 2020. The Company has twelve months 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 quarter ended September 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. Debt Covenants Borrowings under the Term Loan and Senior Notes are subject to certain affirmative and negative covenants, including limitations on indebtedness, corporate transactions, investments and dispositions, and share payments. Under the occurrence of certain events, the U.S. Asset-Based Lending Credit Agreement (U.S. ABL) and Asia Asset-Based Lending Credit Agreement (Asia ABL) (collectively, the ABL Revolving Loans), are subject to various financial and operational covenants, including maintaining minimum fixed charge coverage ratios. Debt Issuance and Debt Discount As of September 28 , 2020 As of September 28, 2020 As of December 30, 2019 Debt Issuance Costs Debt Discount Effective Interest Rate Debt Issuance Costs Debt Discount Effective Interest Rate (In thousands, except interest rates) Term Loan due September 2024 $ 2,862 $ 866 4.66 % $ 6,663 $ 2,016 4.66 % Senior Notes due October 2025 4,721 — 5.92 5,316 — 5.92 Convertible Senior Notes 219 2,188 6.48 995 9,927 6.48 $ 7,802 $ 3,054 $ 12,974 $ 11,943 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 $2,084 and $2,511 as of September 28 , 2020 As of September 28 , 2020

Income Taxes

Income Taxes	9 Months Ended
	Sep. 28, 2020
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 and three quarters ended September 28, 2020, the Company’s effective tax rate was impacted by a net discrete benefit of $1,072 and $5,890, respectively. This is related mainly to release of uncertain tax positions due to the expiration of the statute of limitation in foreign jurisdictions, change in the estimated tax benefits in the United States for GILTI and in Hong Kong related to unrealized foreign exchange gain and loss, netted against (i) an increase of valuation allowance and withholding tax expense related to the announced closure of two of the Company’s E-M Solutions plants, (ii) retroactive 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 assets) and (iii) by 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	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020, the fair value of the interest rate swap was recorded as a liability in the amount of $17,461 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 quarter and three quarters ended September 28, 2020 and September 30, 2019. The interest rate swap increased interest expense by $2,707 and $602 for the quarters ended September 28, 2020 and September 30, 2019, respectively, and $6,224 and $1,308 for the three quarters ended September 28, 2020 and September 30, 2019, 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 September 28, 2020 and December 30, 2019 was approximately $1,968 (Japanese Yen (JPY) 209.0 million) and $1,994 (JPY 215.8 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 September 28, 2020 December 30, 2019 (In thousands) Cash flow derivative instruments designated as hedges: Interest rate swap Other long-term liabilities $ (17,461 ) $ (12,067 ) Cash flow derivative instruments not designated as hedges: Foreign exchange contracts Prepaid expenses and other current assets 19 1 Foreign exchange contracts Other current liabilities — (3 ) 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 quarter and three quarters ended September 28, 2020 and September 30, 2019: Quarter Ended September 28, 2020 Quarter Ended September 30, 2019 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 $ (586 ) $ (2,707 ) $ (1,923 ) $ (602 ) Three Quarters Ended September 28, 2020 Three Quarters Ended September 30, 2019 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 $ (11,618 ) $ (6,224 ) $ (10,586 ) $ (1,308 ) The following table provides a summary of the activity associated with the designated cash flow hedges reflected in accumulated other comprehensive loss for the three quarters ended September 30, 2020 and September 30, 2019: Three Quarters Ended September 28, September 30, 2020 2019 (In thousands) Beginning balance, net of tax $ (9,617 ) $ (4,214 ) Changes in fair value loss, net of tax (8,667 ) (8,164 ) Reclassification to earnings, net of tax 4,727 1,128 Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit 384 — Ending balance, net of tax $ (13,173 ) $ (11,250 ) Based on the current yield curve, the Company expects that losses of approximately $7,961 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	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 and December 30, 2019: Foreign Currency Translation Pension Obligation (Losses) Gains on Cash Flow Hedges Total (In thousands) Ending balance as of December 30, 2019 $ 1,115 $ (1,584 ) $ (9,617 ) $ (10,086 ) Other comprehensive income (loss) before reclassifications 778 4 (8,667 ) (7,885 ) Amounts reclassified from accumulated other comprehensive loss — — 4,727 4,727 Reclassification adjustment for foreign currency translation (346 ) — — (346 ) Derecognition of foreign currency translation adjustments due to sale of Mobility business unit (27,341 ) — — (27,341 ) Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit — — 384 384 Other comprehensive (loss) income (26,909 ) 4 (3,556 ) (30,461 ) Ending balance as of September 28, 2020 $ (25,794 ) $ (1,580 ) $ (13,173 ) $ (40,547 )

Significant Customers and Conce

Significant Customers and Concentration of Credit Risk	9 Months Ended
	Sep. 28, 2020
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 and three quarters ended September 28, 2020, one customer accounted for approximately 13% and 10% of the Company’s net sales, respectively. There were no other customers that accounted for 10% or more of net sales for the quarter and three quarters ended September 28, 2020. There were no customers that accounted for 10% or more of net sales for the quarter and three quarters ended September 30, 2019.

Fair Value Measures

Fair Value Measures	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 and December 30, 2019 were as follows: As of As of September 28, 2020 December 30, 2019 Carrying Amount Fair Value Carrying Amount Fair Value (In thousands) Derivative assets, current $ 19 $ 19 $ 1 $ 1 Derivative liabilities, current — — 3 3 Derivative liabilities, non-current 17,461 17,461 12,067 12,067 Term Loan due September 2024 402,151 396,240 797,200 808,901 Senior Notes due October 2025 370,279 384,240 369,684 390,143 Convertible Senior Notes due December 2020 247,568 297,145 239,053 391,686 ABL Revolving Loans 70,000 70,000 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 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 September 28, 2020 and December 30, 2019, which are considered Level 2 inputs. The fair value of the Convertible Senior Notes was estimated based on quoted market prices of the securities on an active exchange, which are considered Level 2 inputs. As of September 28, 2020 and December 30, 2019, the Company’s other financial instruments also included cash and cash equivalents, restricted cash, accounts receivable, and accounts payable. Due to short-term maturities, the carrying amount of these instruments approximates fair value. The Company’s cash, cash equivalents, and restricted cash as of September 28, 2020 consisted of $429,470 held in the U.S., with the remaining $233,815 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. As of September 28, 2020, the Company’s goodwill balance related to its RF&S Components reporting unit of $108,000 was measured at fair value on a nonrecurring basis. The Company recorded a non-cash goodwill impairment charge of $69,200 during the quarter and three quarters ended September 28, 2020. The fair value of goodwill was determined using both a DCF and a market approach, which are considered Level 3 inputs.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 and December 30, 2019. However, these amounts are not material to the consolidated condensed financial statements of the Company.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 28, 2020
Earnings Per Share [Abstract]
Earnings Per Share	(15) Earnings Per Share 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 quarter and three quarters ended September 28, 2020 and September 30, 2019: Quarter Ended Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands, except per share amounts) Net (loss) income from continuing operations $ (61,472 ) $ 2,393 $ (55,346 ) $ 21,124 Basic weighted average shares 106,729 105,492 106,130 105,092 Dilutive effect of performance-based restricted stock units, restricted stock units and stock options — 982 — 973 Diluted shares 106,729 106,474 106,130 106,065 (Loss) earnings per share: Basic $ (0.58 ) $ 0.02 $ (0.52 ) $ 0.20 Diluted $ (0.58 ) $ 0.02 $ (0.52 ) $ 0.20 For the quarter and three quarters ended September 28, 2020, potential shares of common stock, consisting of stock options to purchase approximately 80 shares of common stock at exercise prices ranging from $11.83 to $16.60 per share, 3,187 restricted stock units (RSUs), and 216 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. PRUs, RSUs and stock options to purchase 407 and 862 shares of common stock for the quarter and three quarters ended September 30, 2019, respectively, were not included in the computation of diluted earnings per share. The PRUs were not included in the computation of diluted earnings per share because the performance conditions had not been met at September 30, 2019, and for RSUs and stock options, the options’ exercise prices or the total expected proceeds under the treasury stock method was greater than the average market price of common shares during the applicable quarter and three quarters and, as a result, the impact would be anti-dilutive. Outstanding warrants for the quarter and three quarters ended September 28, 2020 and September 30, 2019, 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 were greater than the average market price of common shares during the applicable quarter, and therefore, the effect would be anti-dilutive or because the Company incurred a net loss. During the quarter ended September 28, 2020, the Company calculated the dilutive effect of Convertible Senior Notes using the treasury stock method because the Company now has the intent and ability to settle the Convertible Senior Notes in cash. This change in policy from the if-converted method to treasury stock method is applied on a prospective basis. For the quarter and three quarters ended September 28, 2020, the effect of shares of common stock related to the Company’s Convertible Senior Notes, based on the treasury stock method, were not included in the computation of dilutive earnings per share as the impact would be anti-dilutive. For the quarter and three quarters ended September 30, 2019, the effect of shares of common stock related to the Company’s Convertible Senior Notes, based on the if-converted method, were not included in the computation of dilutive earnings per share as the impact would be anti-dilutive.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 28, 2020
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 Three Quarters Ended September 28, September 30, September 28, September 30, 2020 2019 2020 2019 (In thousands) (In thousands) Cost of goods sold $ 1,173 $ 937 $ 2,643 $ 2,210 Selling and marketing 557 574 1,299 1,408 General and administrative 2,705 3,089 7,872 8,421 Research and development 44 62 147 151 Stock-based compensation expense recognized $ 4,479 $ 4,662 $ 11,961 $ 12,190 Summary of Unrecognized Compensation Costs The following is a summary of total unrecognized compensation costs as of September 28, 2020: Unrecognized Stock-Based Compensation Cost Remaining Weighted Average Recognition Period (In thousands) (In years) RSU awards $ 24,422 1.5 PRU awards 2,402 1.6 Stock options 154 1.4 $ 26,978

Segment Information

Segment Information	9 Months Ended
	Sep. 28, 2020
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. During the quarter ended September 28, 2020, the Company’s RF&S Components operating segment met the quantitative threshold for separate presentation of a reportable segment. In prior periods, the Company had two reportable segments: PCB and E-M Solutions. The RF&S Components reportable segment was previously aggregated with the PCB reportable segment. As a result, certain prior year amounts have been reclassified to conform with this new presentation. The PCB reportable segment is comprised of multiple operating segments. Factors considered to determine whether operating segments can be aggregated into reportable segments included similarity regarding economic characteristics, products, production processes, type or classes of customers, distribution methods, and regulatory environments. 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 Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands) Net Sales: PCB $ 463,664 $ 452,816 $ 1,429,629 $ 1,366,762 RF&S Components 11,742 13,644 33,274 51,725 E-M Solutions 38,170 67,713 118,617 179,008 Total net sales $ 513,576 $ 534,173 $ 1,581,520 $ 1,597,495 Operating Segment (Loss) Income: PCB $ 64,219 $ 51,326 $ 199,683 $ 164,458 RF&S Components (66,098 ) 5,999 (59,880 ) 25,824 E-M Solutions (873 ) 3,236 (20,779 ) 5,278 Corporate (25,990 ) (28,750 ) (86,698 ) (75,537 ) Total operating segment income (28,742 ) 31,811 32,326 120,023 Amortization of definite-lived intangibles (1) (11,510 ) (10,680 ) (33,400 ) (39,784 ) Total operating (loss) income (40,252 ) 21,131 (1,074 ) 80,239 Total other expense (22,520 ) (14,548 ) (57,916 ) (53,586 ) (Loss) income before income taxes $ (62,772 ) $ 6,583 $ (58,990 ) $ 26,653 (1) Amortization of definite-lived intangibles primarily relates to the PCB and RF&S Components reportable segments. For the quarter and three quarters ended September 28, 2020, $1,384 and $4,151, respectively, of amortization expense is included in cost of goods sold. For the quarter and three quarters ended September 30, 2019, $1,180 and $3,539, respectively, of amortization expense is included in cost of goods sold. During the quarter and three quarters ended September 28, 2020, the Company recorded an impairment charge for goodwill of $69,200 related to its RF&S Components reportable segment. 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. The Company markets and sells its products in approximately 53 Quarter Ended Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands) Net Sales: United States $ 271,050 $ 281,875 $ 802,681 $ 841,196 China 80,696 75,692 252,736 254,888 Other 161,830 176,606 526,103 501,411 Total net sales $ 513,576 $ 534,173 $ 1,581,520 $ 1,597,495 Net sales are attributed to countries by country invoiced.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 28, 2020
Related Party Transactions [Abstract]
Related Party Transactions	(18) Related Party Transactions In the normal course of business, the Company’s foreign subsidiaries purchase laminate and prepreg from related parties in which a significant shareholder of the Company holds an equity interest. The Company’s foreign subsidiaries purchased laminate and prepreg from these related parties in the amount of $5,760 and $7,151 for the quarters ended September 28, 2020 and September 30, 2019, respectively, and $17,527 and $22,847 for the three quarters ended September 28, 2020 and September 30, 2019, respectively. As of September 28, 2020 and December 30, 2019, the Company’s consolidated condensed balance sheets included $6,786 and $9,220, respectively, in accounts payable due to related parties for purchases of laminate and prepreg and such balances are included as a component of accounts payable on the consolidated condensed balance sheets.

Restructuring Charges

Restructuring Charges	9 Months Ended
	Sep. 28, 2020
Restructuring And Related Activities [Abstract]
Restructuring Charges	(19) Restructuring Charges On April 29, 2020, the Company announced the restructuring of its E-M Solutions business unit. The E-M Solutions business unit consists of three Chinese manufacturing facilities with two being in Shanghai (SH BPA and SH E-MS) and one in Shenzhen (SZ). The Company will discontinue 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 closure of the SH E-MS and SZ facilities will not be immediate as the Company has obligations to fulfill with customers. The Company anticipates phasing out production over the remainder of 2020. As of September 28, 2020, the Company has incurred approximately $14,671 of restructuring charges and $5,694 of accelerated depreciation expense since the April 29, 2020 announcement. The Company estimates that it will incur total charges related to restructuring of its E-M Solutions business unit of approximately $18,500 and accelerated depreciation expense of approximately $8,000. 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 quarter and three quarters ended September 28, 2020 and September 30, 2019. 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 quarter and three quarters ended September 28, 2020 and September 30, 2019: Quarter Ended September 28, 2020 Three Quarters Ended September 28, 2020 Employee Separation/ Severance Contract Termination and Other Costs Total Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ — $ — $ — $ (8 ) $ 14 $ 6 E-M Solutions 979 7 986 14,373 298 14,671 Corporate — 102 102 — 153 153 $ 979 $ 109 $ 1,088 $ 14,365 $ 465 $ 14,830 Quarter Ended September 30, 2019 Three Quarters Ended September 30, 2019 Employee Separation/ Severance Contract Termination and Other Costs Total Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ 5 $ — $ 5 $ 2,941 $ — $ 2,941 RF&S Components — — — 52 — 52 Corporate — 7 7 160 23 183 $ 5 $ 7 $ 12 $ 3,153 $ 23 $ 3,176 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 three quarters ended September 28, 2020: Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Accrued as of December 30, 2019 $ 260 $ 242 $ 502 Charged to expense 14,365 465 14,830 Amount paid (3,139 ) (498 ) (3,637 ) Accrued as of September 28, 2020 $ 11,486 $ 209 $ 11,695

Nature of Operations and Basi_2

Nature of Operations and Basis of Presentation (Policies)	9 Months Ended
	Sep. 28, 2020
Accounting Policies [Abstract]
Reclassifications	Reclassifications Certain prior year amounts in the consolidated condensed financial statements have been reclassified due to the sale of the Company’s Mobility business unit. Refer to Note 2, Discontinued Operations During the quarter ended September 28, 2020, the Company’s RF and Specialty Components (RF&S Components) operating segment met the quantitative threshold for separate presentation of a reportable segment. In prior periods, the Company had two reportable segments: PCB and E-M Solutions. The RF&S Components reportable segment was previously aggregated with the PCB reportable segment. As a result, certain prior year amounts and prior quarters within the current year have been reclassified to conform with this new presentation. Further, in 2020, the Company began presenting research and development expenses as a separate line item on the consolidated condensed statements of operations to better align with similar presentation made by peers and to provide additional disclosure that is meaningful for investors. The prior year consolidated condensed statements of operations were adjusted to conform with this new presentation. Research and development expense were previously presented within general and administrative expense on the consolidated condensed statements of operations.
Immaterial Correction of Error	Immaterial Correction of Error During the quarter ended September 28, 2020, the Company paid for certain transaction costs related to the sale of the Mobility business unit totaling $11,043. This should have been recorded as an expense, which would have reduced the gain on sale of Mobility business unit, during the quarter ended June 29, 2020. The Company overstated both the income from discontinued operations, net of income taxes and net income by $11,043, both basic earnings per share from discontinued operations and basic earnings per share of $0.10 and $0.11 in the quarter and two quarters ended June 29, 2020, respectively, and both diluted earnings per share from discontinued operations and diluted earnings per share of $0.10 in the quarter and two quarters ended June 29, 2020. Further, total current liabilities were understated by $11,043 and retained earnings were overstated by $11,043 as of June 29, 2020. Management concluded that this error was not material to the consolidated condensed financial statements for the quarter and two quarters ended June 29, 2020. Prior period amounts have been revised to correct the error.
Recently Adopted and Issued Accounting Standards	Recently Adopted and Issued Accounting Standards Recently Adopted Accounting Standards In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Recently Issued Accounting Standards Not Yet Adopted In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20)—Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 28, 2020
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Components of Discontinued Operations	The following table summarizes the results of Mobility operations for each period prior to sale: Quarter Ended Three Quarters Ended September 28, September 30, September 28, September 30, 2020 2019 2020 2019 (In thousands, except per share data) Net sales $ — $ 182,644 $ 143,951 $ 372,560 Cost of goods sold — 164,068 136,800 372,358 Gross profit — 18,576 7,151 202 Operating expenses: Selling and marketing — 1,247 1,461 3,557 General and administrative — 1,424 2,317 4,166 Research and development — — 147 — Amortization of definite-lived intangibles — 675 809 2,023 Total operating expenses — 3,346 4,734 9,746 Operating income (loss) — 15,230 2,417 (9,544 ) Other (expense) income: Interest expense — (145 ) (223 ) (1,016 ) Gain on sale of the Mobility business unit — — 237,253 — Other, net — 2,251 1,160 3,692 Total other income, net — 2,106 238,190 2,676 Income (loss) from discontinued operations before income taxes — 17,336 240,607 (6,868 ) Income tax benefit (provision) 20,021 (3,859 ) (46,686 ) 1,786 Income (loss) from discontinued operations, net of income taxes $ 20,021 $ 13,477 $ 193,921 $ (5,082 ) Earnings (loss) per share from discontinued operations: Basic earnings (loss) per share $ 0.19 $ 0.13 $ 1.83 $ (0.05 ) Diluted earnings (loss) per share $ 0.19 $ 0.13 $ 1.83 $ (0.05 ) (in thousands) Net proceeds from the sale of the Mobility business unit (1) $ 569,246 Mobility business unit assets: Cash and cash equivalents 12,513 Restricted cash 35,412 Accounts receivable, net 12 Contract assets 40,072 Inventories 4,988 Prepaid expenses and other current assets 4,593 Property, plant and equipment, net 328,648 Goodwill 68,267 Definite-lived intangibles, net 5,520 Deposits and other non-current assets 6,291 Total Mobility business unit assets 506,316 Mobility business unit liabilities: Accounts payable 142,636 Accrued salaries, wages and benefits 9,392 Other current liabilities 8,890 Other long-term liabilities 303 Total Mobility business unit liabilities 161,221 Derecognition of foreign currency translation adjustments and unrealized losses on cash flow hedges recorded in accumulated other comprehensive loss 26,957 Other transaction costs incurred as part of the sale of the Mobility business unit (2) 13,855 Gain on sale of the Mobility business unit before income taxes $ 237,253 (1) Net proceeds from the sale of the Mobility business unit are net of customary purchase price adjustments. (2) Costs directly incurred as a result of the sale of the Company’s Mobility business unit, including bank fees, legal fees, professional fees, and other costs.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 28, 2020
Leases [Abstract]
Components of Lease Expense	The components of lease expense were as follows: Quarter Ended Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands) Operating lease cost $ 2,333 $ 2,202 $ 7,041 $ 6,367 Variable lease cost 133 137 376 398 Short-term lease cost 84 95 482 280
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Three Quarters Ended September 28, 2020 September 30, 2019 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,636 $ 6,240 Right-of-use assets obtained in exchange for new lease obligations: Operating leases 6,559 13,058
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: As of September 28, 2020 December 30, 2019 (In thousands) Operating lease right-of-use assets $ 22,993 $ 22,173 Other current liabilities 7,945 7,111 Operating lease liabilities 15,885 15,413 Total operating lease liabilities $ 23,830 $ 22,524 As of September 28, 2020 December 30, 2019 Weighted average remaining lease term 4.1 years 4.4 years Weighted average discount rate 3.53 % 3.92 %
Maturities of Operating Lease Liabilities	Maturities of operating lease liabilities were as follows (1) (In thousands) Less than one year $ 9,309 1 - 2 years 5,114 2 - 3 years 4,030 3 - 4 years 3,011 4 - 5 years 2,046 Thereafter 2,148 Total lease payments 25,658 Less imputed interest (1,828 ) Total $ 23,830 (1) Excludes $969 of legally binding minimum lease payments for leases signed but not yet commenced.

Revenues (Tables)

Revenues (Tables)	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 Quarter Ended September 30, 2019 PCB RF&S Components E-M Solutions Total PCB RF&S Components E-M Solutions Total End Markets (In thousands) Aerospace and Defense $ 182,709 $ 180 $ 16 $ 182,905 $ 170,651 $ 729 $ 1 $ 171,381 Automotive 64,375 — 8,891 73,266 72,597 — 39,559 112,156 Cellular Phone 39 — — 39 3,512 — — 3,512 Computing/Storage/ Peripherals 62,606 186 30 62,822 57,367 592 72 58,031 Medical/Industrial/ Instrumentation 92,059 742 2,769 95,570 84,178 705 5,775 90,658 Networking/Communications 55,905 7,203 27,185 90,293 58,782 7,971 22,746 89,499 Other 5,971 3,431 (721 ) 8,681 5,729 3,647 (440 ) 8,936 Total $ 463,664 $ 11,742 $ 38,170 $ 513,576 $ 452,816 $ 13,644 $ 67,713 $ 534,173 Three Quarters Ended September 28, 2020 Three Quarters Ended September 30, 2019 PCB RF&S Components E-M Solutions Total PCB RF&S Components E-M Solutions Total End Markets (In thousands) Aerospace and Defense $ 555,771 $ 189 $ 36 $ 555,996 $ 510,210 $ 777 $ 367 $ 511,354 Automotive 183,896 — 27,816 211,712 227,239 — 83,317 310,556 Cellular Phone 1,203 — — 1,203 5,416 — — 5,416 Computing/Storage/ Peripherals 192,275 663 170 193,108 170,914 1,373 261 172,548 Medical/Industrial/ Instrumentation 292,794 2,336 9,714 304,844 246,889 2,629 23,583 273,101 Networking/ Communications 178,428 19,173 82,429 280,030 188,069 37,192 72,011 297,272 Other 25,262 10,913 (1,548 ) 34,627 18,025 9,754 (531 ) 27,248 Total $ 1,429,629 $ 33,274 $ 118,617 $ 1,581,520 $ 1,366,762 $ 51,725 $ 179,008 $ 1,597,495

Composition of Certain Consol_2

Composition of Certain Consolidated Condensed Financial Statement Captions (Tables)	9 Months Ended
	Sep. 28, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Schedule of Composition of Certain Consolidated Condensed Financial Statement Captions	As of September 28, 2020 December 30, 2019 (In thousands) Inventories: Raw materials $ 116,090 $ 97,660 Work-in-process 8,059 10,898 Finished goods 3,439 5,195 $ 127,588 $ 113,753 Property, plant and equipment, net: Land and land use rights $ 62,009 $ 62,009 Buildings and improvements 397,361 381,980 Machinery and equipment 833,790 777,916 Furniture and fixtures and other 10,461 10,329 Construction-in-progress 27,604 58,195 1,331,225 1,290,429 Less: Accumulated depreciation (676,388 ) (612,228 ) $ 654,837 $ 678,201 Other current liabilities: Income taxes payable $ 14,489 $ 13,035 Interest 13,739 8,893 Sales return and allowances 12,754 13,544 Restructuring 11,695 502 Other 62,641 56,508 $ 115,318 $ 92,482

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 28, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill by Reportable Segment	As of September 28, 2020 and December 30, 2019, goodwill by reportable segment was as follows: PCB RF&S Components Total (In thousands) Balance as of December 30, 2019 Goodwill $ 700,724 $ 177,200 $ 877,924 Accumulated impairment loss (171,400 ) — (171,400 ) 529,324 177,200 706,524 Impairment loss during the three quarters ended September 28, 2020 — (69,200 ) (69,200 ) Balance as of September 28, 2020 Goodwill 700,724 177,200 877,924 Accumulated impairment loss (171,400 ) (69,200 ) (240,600 ) $ 529,324 $ 108,000 $ 637,324

Definite-lived Intangibles (Tab

Definite-lived Intangibles (Tables)	9 Months Ended
	Sep. 28, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Definite Lived Intangibles	As of September 28, 2020 and December 30, 2019, the components of definite-lived intangibles were as follows: Gross Amount Accumulated Amortization Net Carrying Amount Weighted Average Amortization Period (In thousands) (In years) September 28, 2020 Customer relationships $ 397,500 $ (140,552 ) $ 256,948 10.9 Technology 47,650 (12,318 ) 35,332 9.5 $ 445,150 $ (152,870 ) $ 292,280 December 30, 2019 Customer relationships $ 396,270 $ (111,272 ) $ 284,998 11.0 Technology 39,500 (8,064 ) 31,436 9.4 Acquired intangibles from acquisition in 2019 Customer relationships 1,230 (31 ) 1,199 5.0 Technology 8,150 (103 ) 8,047 10.0 $ 445,150 $ (119,470 ) $ 325,680
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 2020 $ 10,973 2021 41,179 2022 38,631 2023 36,713 2024 29,713 Thereafter 135,071 $ 292,280

Long-term Debt and Letters of_2

Long-term Debt and Letters of Credit (Tables)	9 Months Ended
	Sep. 28, 2020
Debt Disclosure [Abstract]
Long-term Debt	The following table summarizes the long-term debt of the Company as of September 28, 2020 and December 30, 2019: Interest Rate as of September 28, 2020 Principal Outstanding as of September 28, 2020 Interest Rate as of December 30, 2019 Principal Outstanding as of December 30, 2019 (In thousands) Term Loan due September 2024 2.65 % $ 405,879 4.28 % $ 805,879 Senior Notes due October 2025 5.63 375,000 5.63 375,000 Convertible Senior Notes due December 2020 1.75 249,975 1.75 249,975 U.S. ABL Revolving Loan due June 2024 1.40 40,000 3.03 40,000 Asia ABL Revolving Loan due June 2024 1.55 30,000 3.18 30,000 1,100,854 1,500,854 Less: Long-term debt unamortized discount (3,054 ) (11,943 ) Long-term debt unamortized debt issuance costs (7,802 ) (12,974 ) 1,089,998 1,475,937 Less: current maturities (249,975 ) (249,975 ) Long-term debt, less current maturities $ 840,023 $ 1,225,962
Schedule of Remaining Unamortized Debt Discount and Debt Issuance Costs	As of September 28 , 2020 As of September 28, 2020 As of December 30, 2019 Debt Issuance Costs Debt Discount Effective Interest Rate Debt Issuance Costs Debt Discount Effective Interest Rate (In thousands, except interest rates) Term Loan due September 2024 $ 2,862 $ 866 4.66 % $ 6,663 $ 2,016 4.66 % Senior Notes due October 2025 4,721 — 5.92 5,316 — 5.92 Convertible Senior Notes 219 2,188 6.48 995 9,927 6.48 $ 7,802 $ 3,054 $ 12,974 $ 11,943

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 December 30, 2019 (In thousands) Cash flow derivative instruments designated as hedges: Interest rate swap Other long-term liabilities $ (17,461 ) $ (12,067 ) Cash flow derivative instruments not designated as hedges: Foreign exchange contracts Prepaid expenses and other current assets 19 1 Foreign exchange contracts Other current liabilities — (3 )
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 quarter and three quarters ended September 28, 2020 and September 30, 2019: Quarter Ended September 28, 2020 Quarter Ended September 30, 2019 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 $ (586 ) $ (2,707 ) $ (1,923 ) $ (602 ) Three Quarters Ended September 28, 2020 Three Quarters Ended September 30, 2019 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 $ (11,618 ) $ (6,224 ) $ (10,586 ) $ (1,308 )
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 three quarters ended September 30, 2020 and September 30, 2019: Three Quarters Ended September 28, September 30, 2020 2019 (In thousands) Beginning balance, net of tax $ (9,617 ) $ (4,214 ) Changes in fair value loss, net of tax (8,667 ) (8,164 ) Reclassification to earnings, net of tax 4,727 1,128 Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit 384 — Ending balance, net of tax $ (13,173 ) $ (11,250 )

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 and December 30, 2019: Foreign Currency Translation Pension Obligation (Losses) Gains on Cash Flow Hedges Total (In thousands) Ending balance as of December 30, 2019 $ 1,115 $ (1,584 ) $ (9,617 ) $ (10,086 ) Other comprehensive income (loss) before reclassifications 778 4 (8,667 ) (7,885 ) Amounts reclassified from accumulated other comprehensive loss — — 4,727 4,727 Reclassification adjustment for foreign currency translation (346 ) — — (346 ) Derecognition of foreign currency translation adjustments due to sale of Mobility business unit (27,341 ) — — (27,341 ) Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit — — 384 384 Other comprehensive (loss) income (26,909 ) 4 (3,556 ) (30,461 ) Ending balance as of September 28, 2020 $ (25,794 ) $ (1,580 ) $ (13,173 ) $ (40,547 )

Fair Value Measures (Tables)

Fair Value Measures (Tables)	9 Months Ended
	Sep. 28, 2020
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 September 28, 2020 and December 30, 2019 were as follows: As of As of September 28, 2020 December 30, 2019 Carrying Amount Fair Value Carrying Amount Fair Value (In thousands) Derivative assets, current $ 19 $ 19 $ 1 $ 1 Derivative liabilities, current — — 3 3 Derivative liabilities, non-current 17,461 17,461 12,067 12,067 Term Loan due September 2024 402,151 396,240 797,200 808,901 Senior Notes due October 2025 370,279 384,240 369,684 390,143 Convertible Senior Notes due December 2020 247,568 297,145 239,053 391,686 ABL Revolving Loans 70,000 70,000 70,000 70,000

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 28, 2020
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 quarter and three quarters ended September 28, 2020 and September 30, 2019: Quarter Ended Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands, except per share amounts) Net (loss) income from continuing operations $ (61,472 ) $ 2,393 $ (55,346 ) $ 21,124 Basic weighted average shares 106,729 105,492 106,130 105,092 Dilutive effect of performance-based restricted stock units, restricted stock units and stock options — 982 — 973 Diluted shares 106,729 106,474 106,130 106,065 (Loss) earnings per share: Basic $ (0.58 ) $ 0.02 $ (0.52 ) $ 0.20 Diluted $ (0.58 ) $ 0.02 $ (0.52 ) $ 0.20

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 28, 2020
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 Three Quarters Ended September 28, September 30, September 28, September 30, 2020 2019 2020 2019 (In thousands) (In thousands) Cost of goods sold $ 1,173 $ 937 $ 2,643 $ 2,210 Selling and marketing 557 574 1,299 1,408 General and administrative 2,705 3,089 7,872 8,421 Research and development 44 62 147 151 Stock-based compensation expense recognized $ 4,479 $ 4,662 $ 11,961 $ 12,190
Summary of Unrecognized Compensation Costs	The following is a summary of total unrecognized compensation costs as of September 28, 2020: Unrecognized Stock-Based Compensation Cost Remaining Weighted Average Recognition Period (In thousands) (In years) RSU awards $ 24,422 1.5 PRU awards 2,402 1.6 Stock options 154 1.4 $ 26,978

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 28, 2020
Segment Reporting [Abstract]
Reconciliation of Operating Income (Loss) from Segments to Consolidated	Quarter Ended Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands) Net Sales: PCB $ 463,664 $ 452,816 $ 1,429,629 $ 1,366,762 RF&S Components 11,742 13,644 33,274 51,725 E-M Solutions 38,170 67,713 118,617 179,008 Total net sales $ 513,576 $ 534,173 $ 1,581,520 $ 1,597,495 Operating Segment (Loss) Income: PCB $ 64,219 $ 51,326 $ 199,683 $ 164,458 RF&S Components (66,098 ) 5,999 (59,880 ) 25,824 E-M Solutions (873 ) 3,236 (20,779 ) 5,278 Corporate (25,990 ) (28,750 ) (86,698 ) (75,537 ) Total operating segment income (28,742 ) 31,811 32,326 120,023 Amortization of definite-lived intangibles (1) (11,510 ) (10,680 ) (33,400 ) (39,784 ) Total operating (loss) income (40,252 ) 21,131 (1,074 ) 80,239 Total other expense (22,520 ) (14,548 ) (57,916 ) (53,586 ) (Loss) income before income taxes $ (62,772 ) $ 6,583 $ (58,990 ) $ 26,653 (1) Amortization of definite-lived intangibles primarily relates to the PCB and RF&S Components reportable segments. For the quarter and three quarters ended September 28, 2020, $1,384 and $4,151, respectively, of amortization expense is included in cost of goods sold. For the quarter and three quarters ended September 30, 2019, $1,180 and $3,539, respectively, of amortization expense is included in cost of goods sold.
Net Sales	The Company markets and sells its products in approximately 53 Quarter Ended Three Quarters Ended September 28, 2020 September 30, 2019 September 28, 2020 September 30, 2019 (In thousands) Net Sales: United States $ 271,050 $ 281,875 $ 802,681 $ 841,196 China 80,696 75,692 252,736 254,888 Other 161,830 176,606 526,103 501,411 Total net sales $ 513,576 $ 534,173 $ 1,581,520 $ 1,597,495

Restructuring Charges (Tables)

Restructuring Charges (Tables)	9 Months Ended
	Sep. 28, 2020
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 quarter and three quarters ended September 28, 2020 and September 30, 2019: Quarter Ended September 28, 2020 Three Quarters Ended September 28, 2020 Employee Separation/ Severance Contract Termination and Other Costs Total Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ — $ — $ — $ (8 ) $ 14 $ 6 E-M Solutions 979 7 986 14,373 298 14,671 Corporate — 102 102 — 153 153 $ 979 $ 109 $ 1,088 $ 14,365 $ 465 $ 14,830 Quarter Ended September 30, 2019 Three Quarters Ended September 30, 2019 Employee Separation/ Severance Contract Termination and Other Costs Total Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Reportable Segment: PCB $ 5 $ — $ 5 $ 2,941 $ — $ 2,941 RF&S Components — — — 52 — 52 Corporate — 7 7 160 23 183 $ 5 $ 7 $ 12 $ 3,153 $ 23 $ 3,176
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 three quarters ended September 28, 2020: Employee Separation/ Severance Contract Termination and Other Costs Total (In thousands) Accrued as of December 30, 2019 $ 260 $ 242 $ 502 Charged to expense 14,365 465 14,830 Amount paid (3,139 ) (498 ) (3,637 ) Accrued as of September 28, 2020 $ 11,486 $ 209 $ 11,695

Nature of Operations and Basi_3

Nature of Operations and Basis of Presentation - Additional Information (Detail) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 28, 2020USD ($)	Jun. 29, 2020$ / shares	Jun. 29, 2020USD ($)Segment$ / shares
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of reportable segments | Segment			2
Mobility business unit expense	$ 11,043
ASU 2020-04
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, immaterial effect	true
ASU 2016-13
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, immaterial effect	true
Change in accounting principle, accounting standards update, adoption date	Dec. 31, 2019
Overstated | Income from Discontinued Operations, Net of Income Taxes | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount			$ 11,043
Overstated | Net Income | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount			$ 11,043
Overstated | Basic Earnings per Share from Discontinued Operations | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount per share | $ / shares		$ 0.10	$ 0.11
Overstated | Diluted Earnings per Share from Discontinued Operations | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount per share | $ / shares		0.10	0.10
Overstated | Basic Earnings per Share | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount per share | $ / shares		0.10	$ 0.11
Overstated | Retained Earnings | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount			$ 11,043
Overstated | Diluted Earnings per Share | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount per share | $ / shares		$ 0.10	$ 0.10
Understated | Current Liabilities | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Quantifying misstatement in current year financial statements, amount			$ 11,043

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details) - USD ($)	Apr. 18, 2020	Apr. 17, 2020	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Depreciation expense related to the discontinued operations			$ 0	$ 18,704,000	$ 21,382,000	$ 54,645,000
Net discrete tax expense (benefit) related to discontinued operations			(20,021,000)		$ 46,686,000
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		$ 550,000,000
Estimated additional cash from sale of subsidiaries of mobility business unit		$ 95,000,000
Final purchase price from sale of subsidiaries of mobility business unit			569,246,000
Additional cash from sale of subsidiaries of mobility business unit			$ 83,000,000
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) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Discontinued Operations And Disposal Groups [Abstract]
Net sales		$ 182,644	$ 143,951	$ 372,560
Cost of goods sold		164,068	136,800	372,358
Gross profit		18,576	7,151	202
Operating expenses:
Selling and marketing		1,247	1,461	3,557
General and administrative		1,424	2,317	4,166
Research and development			147
Amortization of definite-lived intangibles		675	809	2,023
Total operating expenses		3,346	4,734	9,746
Operating income (loss)		15,230	2,417	(9,544)
Other (expense) income:
Interest expense		(145)	(223)	(1,016)
Gain on sale of the Mobility business unit			237,253
Other, net		2,251	1,160	3,692
Total other income, net		2,106	238,190	2,676
Income (loss) from discontinued operations before income taxes		17,336	240,607	(6,868)
Income tax benefit (provision)	$ 20,021	(3,859)	(46,686)	1,786
Income (loss) from discontinued operations, net of income taxes	$ 20,021	$ 13,477	$ 193,921	$ (5,082)
Earnings (loss) per share from discontinued operations:
Basic earnings (loss) per share from discontinued operations	$ 0.19	$ 0.13	$ 1.83	$ (0.05)
Diluted earnings (loss) per share from discontinued operations	$ 0.19	$ 0.13	$ 1.83	$ (0.05)

Discontinued Operations - Sch_2

Discontinued Operations - Schedule of Components of Discontinued Operations of Reconciliation of Gain Recorded for Sale (Details) $ in Thousands	9 Months Ended
	Sep. 28, 2020USD ($)
Discontinued Operations And Disposal Groups [Abstract]
Net proceeds from the sale of the Mobility business unit	$ 569,246
Mobility business unit assets:
Cash and cash equivalents	12,513
Restricted cash	35,412
Accounts receivable, net	12
Contract assets	40,072
Inventories	4,988
Prepaid expenses and other current assets	4,593
Property, plant and equipment, net	328,648
Goodwill	68,267
Definite-lived intangibles, net	5,520
Deposits and other non-current assets	6,291
Total Mobility business unit assets	506,316
Mobility business unit liabilities:
Accounts payable	142,636
Accrued salaries, wages and benefits	9,392
Other current liabilities	8,890
Other long-term liabilities	303
Total Mobility business unit liabilities	161,221
Derecognition of foreign currency translation adjustments and unrealized losses on cash flow hedges recorded in accumulated other comprehensive loss	26,957
Other transaction costs incurred as part of the sale of the Mobility business unit	13,855
Gain on sale of the Mobility business unit before income taxes	$ 237,253

Components of Lease Expense (De

Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 2,333	$ 2,202	$ 7,041	$ 6,367
Variable lease cost	133	137	376	398
Short-term lease cost	$ 84	$ 95	$ 482	$ 280

Supplemental Cash Flow Informat

Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 28, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 6,636	$ 6,240
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	$ 6,559	$ 13,058

Supplemental Balance Sheet Info

Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Sep. 28, 2020	Dec. 30, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 22,993	$ 22,173
Other current liabilities	$ 7,945	$ 7,111
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Operating lease liabilities	$ 15,885	$ 15,413
Total operating lease liabilities	$ 23,830	$ 22,524
Weighted average remaining lease term	4 years 1 month 6 days	4 years 4 months 24 days
Weighted average discount rate	3.53%	3.92%

Maturities of Operating Lease L

Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Sep. 28, 2020	Dec. 30, 2019
Leases [Abstract]
Less than one year	$ 9,309
1 - 2 years	5,114
2 - 3 years	4,030
3 - 4 years	3,011
4 - 5 years	2,046
Thereafter	2,148
Total lease payments	25,658
Less imputed interest	(1,828)
Total	$ 23,830	$ 22,524

Maturities of Operating Lease_2

Maturities of Operating Lease Liabilities (Parenthetical) (Detail)	Sep. 28, 2020USD ($)
Leases [Abstract]
Legally binding lease payments for leases signed but not yet commenced	$ 969,000

Revenues - Additional Informati

Revenues - Additional Information (Detail 1) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-09-29 $ in Thousands	Sep. 28, 2020USD ($)
Revenue From Contract With Customer [Line Items]
Transaction price allocated to remaining performance obligations	$ 19,606
Remaining performance obligation period	12 months

Revenues - Additional Informa_2

Revenues - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Revenue From Contract With Customer [Line Items]
Remaining revenue performance obligation, percentage	86.00%		86.00%
Transferred over Time
Revenue From Contract With Customer [Line Items]
Revenue from products and services transferred to customers, percentage	98.00%	97.00%	98.00%	97.00%
Transferred at Point in Time
Revenue From Contract With Customer [Line Items]
Revenue from products and services transferred to customers, percentage	2.00%	3.00%	2.00%	3.00%

Disaggregation of Revenue by Pr

Disaggregation of Revenue by Principal End Markets with the Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Total Revenue	$ 513,576	$ 534,173	$ 1,581,520	$ 1,597,495
Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	182,905	171,381	555,996	511,354
Automotive
Disaggregation Of Revenue [Line Items]
Total Revenue	73,266	112,156	211,712	310,556
Cellular Phone
Disaggregation Of Revenue [Line Items]
Total Revenue	39	3,512	1,203	5,416
Computing/Storage/Peripherals
Disaggregation Of Revenue [Line Items]
Total Revenue	62,822	58,031	193,108	172,548
Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	95,570	90,658	304,844	273,101
Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	90,293	89,499	280,030	297,272
Other
Disaggregation Of Revenue [Line Items]
Total Revenue	8,681	8,936	34,627	27,248
Printed Circuit Board
Disaggregation Of Revenue [Line Items]
Total Revenue	463,664	452,816	1,429,629	1,366,762
Printed Circuit Board | Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	182,709	170,651	555,771	510,210
Printed Circuit Board | Automotive
Disaggregation Of Revenue [Line Items]
Total Revenue	64,375	72,597	183,896	227,239
Printed Circuit Board | Cellular Phone
Disaggregation Of Revenue [Line Items]
Total Revenue	39	3,512	1,203	5,416
Printed Circuit Board | Computing/Storage/Peripherals
Disaggregation Of Revenue [Line Items]
Total Revenue	62,606	57,367	192,275	170,914
Printed Circuit Board | Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	92,059	84,178	292,794	246,889
Printed Circuit Board | Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	55,905	58,782	178,428	188,069
Printed Circuit Board | Other
Disaggregation Of Revenue [Line Items]
Total Revenue	5,971	5,729	25,262	18,025
RF&S Components
Disaggregation Of Revenue [Line Items]
Total Revenue	11,742	13,644	33,274	51,725
RF&S Components | Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	180	729	189	777
RF&S Components | Computing/Storage/Peripherals
Disaggregation Of Revenue [Line Items]
Total Revenue	186	592	663	1,373
RF&S Components | Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	742	705	2,336	2,629
RF&S Components | Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	7,203	7,971	19,173	37,192
RF&S Components | Other
Disaggregation Of Revenue [Line Items]
Total Revenue	3,431	3,647	10,913	9,754
E-M Solutions
Disaggregation Of Revenue [Line Items]
Total Revenue	38,170	67,713	118,617	179,008
E-M Solutions | Aerospace and Defense
Disaggregation Of Revenue [Line Items]
Total Revenue	16	1	36	367
E-M Solutions | Automotive
Disaggregation Of Revenue [Line Items]
Total Revenue	8,891	39,559	27,816	83,317
E-M Solutions | Computing/Storage/Peripherals
Disaggregation Of Revenue [Line Items]
Total Revenue	30	72	170	261
E-M Solutions | Medical/Industrial/Instrumentation
Disaggregation Of Revenue [Line Items]
Total Revenue	2,769	5,775	9,714	23,583
E-M Solutions | Networking/Communications
Disaggregation Of Revenue [Line Items]
Total Revenue	27,185	22,746	82,429	72,011
E-M Solutions | Other
Disaggregation Of Revenue [Line Items]
Total Revenue	$ (721)	$ (440)	$ (1,548)	$ (531)

Schedule of Composition of Cert

Schedule of Composition of Certain Consolidated Condensed Financial Statement Captions (Detail) - USD ($) $ in Thousands	Sep. 28, 2020	Dec. 30, 2019
Inventories:
Raw materials	$ 116,090	$ 97,660
Work-in-process	8,059	10,898
Finished goods	3,439	5,195
Inventories	127,588	113,753
Property, plant and equipment, net:
Land and land use rights	62,009	62,009
Buildings and improvements	397,361	381,980
Machinery and equipment	833,790	777,916
Furniture and fixtures and other	10,461	10,329
Construction-in-progress	27,604	58,195
Property, plant and equipment, gross	1,331,225	1,290,429
Less: Accumulated depreciation	(676,388)	(612,228)
Property, plant and equipment, net	654,837	678,201
Other current liabilities:
Income taxes payable	14,489	13,035
Interest	13,739	8,893
Sales return and allowances	12,754	13,544
Restructuring	11,695	502
Other	62,641	56,508
Other current liabilities	$ 115,318	$ 92,482

Goodwill by Reportable Segment

Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2020	Sep. 28, 2020	Dec. 30, 2019
Goodwill [Line Items]
Goodwill	$ 877,924	$ 877,924	$ 877,924
Accumulated impairment loss	(240,600)	(240,600)	(171,400)
Goodwill, net	637,324	637,324	706,524
Impairment loss during the three quarters ended September 28, 2020	(69,200)	(69,200)
Printed Circuit Board
Goodwill [Line Items]
Goodwill	700,724	700,724	700,724
Accumulated impairment loss	(171,400)	(171,400)	(171,400)
Goodwill, net	529,324	529,324	529,324
RF&S Components
Goodwill [Line Items]
Goodwill	177,200	177,200	177,200
Accumulated impairment loss	(69,200)	(69,200)
Goodwill, net	108,000	108,000	$ 177,200
Impairment loss during the three quarters ended September 28, 2020	$ (69,200)	$ (69,200)

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2020	Sep. 28, 2020
Goodwill [Line Items]
Non-cash goodwill impairment charge	$ 69,200	$ 69,200
RF&S Components
Goodwill [Line Items]
Non-cash goodwill impairment charge	$ 69,200	$ 69,200

Definite-lived Intangibles (Det

Definite-lived Intangibles (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 28, 2020	Dec. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 445,150	$ 445,150
Accumulated Amortization	(152,870)	(119,470)
Net Carrying Amount	292,280	325,680
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	397,500	396,270
Accumulated Amortization	(140,552)	(111,272)
Net Carrying Amount	$ 256,948	$ 284,998
Weighted Average Amortization Period	10 years 10 months 24 days	11 years
Customer Relationships | Acquired Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount		$ 1,230
Accumulated Amortization		(31)
Net Carrying Amount		$ 1,199
Weighted Average Amortization Period		5 years
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 47,650	$ 39,500
Accumulated Amortization	(12,318)	(8,064)
Net Carrying Amount	$ 35,332	$ 31,436
Weighted Average Amortization Period	9 years 6 months	9 years 4 months 24 days
Technology | Acquired Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount		$ 8,150
Accumulated Amortization		(103)
Net Carrying Amount		$ 8,047
Weighted Average Amortization Period		10 years

Definite-lived Intangibles - Ad

Definite-lived Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of definite-lived intangibles	$ 11,510	$ 10,680	$ 33,400	$ 39,784
Amortization of definite-lived intangibles included in cost of goods sold	$ 1,384	$ 1,180	$ 4,151	$ 3,539

Estimated Aggregate Amortizatio

Estimated Aggregate Amortization for Definite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 28, 2020	Dec. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Remaining 2020	$ 10,973
2021	41,179
2022	38,631
2023	36,713
2024	29,713
Thereafter	135,071
Net Carrying Amount	$ 292,280	$ 325,680

Long-term Debt (Detail)

Long-term Debt (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 28, 2020	Dec. 30, 2019
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,100,854	$ 1,500,854
Less: Long-term debt unamortized discount	(3,054)	(11,943)
Long-term debt unamortized debt issuance costs	(7,802)	(12,974)
Long-term debt, Carrying Amount	1,089,998	1,475,937
Less: current maturities	(249,975)	(249,975)
Long-term debt, less current maturities	840,023	1,225,962
1.75% Convertible Senior Notes due December 15, 2020
Debt Instrument [Line Items]
Long-term debt, gross	249,975	249,975
Less: Long-term debt unamortized discount	$ (2,188)	$ (9,927)
Debt instrument, interest rate	1.75%	1.75%
Term Loan Due September 2024
Debt Instrument [Line Items]
Long-term debt, gross	$ 405,879	$ 805,879
Less: Long-term debt unamortized discount	$ (866)	$ (2,016)
Interest rate at period end	2.65%	4.28%
Senior Notes Due October 2025
Debt Instrument [Line Items]
Long-term debt, gross	$ 375,000	$ 375,000
Debt instrument, interest rate	5.63%	5.63%
U.S. Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Revolving loan	$ 40,000	$ 40,000
Long-term debt unamortized debt issuance costs	$ (2,084)	$ (2,511)
Interest rate at period end	1.40%	3.03%
Asia Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Revolving loan	$ 30,000	$ 30,000
Interest rate at period end	1.55%	3.18%

Long-term Debt (Parenthetical)

Long-term Debt (Parenthetical) (Detail)	9 Months Ended
	Sep. 28, 2020
1.75% Convertible Senior Notes due December 15, 2020
Debt Instrument [Line Items]
Long-term debt, maturity month and year	2020-12
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	3 Months Ended	9 Months Ended
	Sep. 28, 2020	Sep. 28, 2020	Dec. 30, 2019
Debt Instrument [Line Items]
Restricted cash	$ 249,975	$ 249,975
Remaining unamortized debt issuance costs	7,802	$ 7,802	$ 12,974
Weighted Average
Debt Instrument [Line Items]
Unamortized debt discount and debt issuance costs, amortization period		3 years 7 months 6 days
Term Loan Due September 2024
Debt Instrument [Line Items]
Debt principal prepayment	400,000
U.S. Asset Based Lending Revolving Loan Due June 2024
Debt Instrument [Line Items]
Remaining unamortized debt issuance costs	$ 2,084	$ 2,084	$ 2,511

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	Sep. 28, 2020	Dec. 30, 2019
Debt Instrument [Line Items]
Debt Issuance Costs	$ 7,802	$ 12,974
Debt Discount	3,054	11,943
1.75% Convertible Senior Notes due December 15, 2020
Debt Instrument [Line Items]
Debt Issuance Costs	219	995
Debt Discount	$ 2,188	$ 9,927
Effective Interest Rate	6.48%	6.48%
Term Loan Due September 2024
Debt Instrument [Line Items]
Debt Issuance Costs	$ 2,862	$ 6,663
Debt Discount	$ 866	$ 2,016
Effective Interest Rate	4.66%	4.66%
Senior Notes Due October 2025
Debt Instrument [Line Items]
Debt Issuance Costs	$ 4,721	$ 5,316
Effective Interest Rate	5.92%	5.92%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Sep. 28, 2020USD ($)	Sep. 28, 2020USD ($)
Income Tax Disclosure [Abstract]
Change in valuation allowance		$ 0
Effective tax rate impacted by net discrete tax expense (benefit)	$ (1,072,000)	(5,890,000)
Tax on undistributed earnings	$ 0	$ 0

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail)	May 15, 2018USD ($)	Sep. 28, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 28, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 28, 2020JPY (¥)	Dec. 30, 2019USD ($)	Dec. 30, 2019JPY (¥)
Derivative [Line Items]
Accumulated other comprehensive income (loss) will be reclassified into the statement of operations, net of tax, in the next 12 months				$ (7,961,000)
Interest Rate Swap
Derivative [Line Items]
Interest rate derivatives, at fair value, net	$ 0
Derivative, ineffectiveness		$ 0	$ 0	0	$ 0
Interest Rate Swap | Other Long-term Liabilities
Derivative [Line Items]
Interest rate derivative liability, at fair value		17,461,000		17,461,000
Interest Rate Swap | Interest expense
Derivative [Line Items]
Derivative instrument, increased interest expense		2,707,000	$ 602,000	6,224,000	$ 1,308,000
Foreign Exchange Contracts
Derivative [Line Items]
Derivative, notional amount		$ 1,968,000		$ 1,968,000		¥ 209,000,000	$ 1,994,000	¥ 215,800,000
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	Sep. 28, 2020	Dec. 30, 2019
Other Long-term Liabilities | Interest Rate Swap
Cash flow derivative instruments designated as hedges:
Cash flow derivative instruments designated as hedges, liability fair value	$ (17,461)	$ (12,067)
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	$ 19	1
Other Current Liabilities | Foreign Exchange Contracts
Cash flow derivative instruments not designated as hedges:
Cash flow derivative instruments designated as hedges, asset fair value		$ (3)

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		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Derivative Instruments Gain Loss [Line Items]
Loss Recognized in Other Comprehensive Loss	$ (655)	$ (1,833)	$ (8,667)	$ (8,164)
Interest Rate Swap | Interest expense
Derivative Instruments Gain Loss [Line Items]
Loss Recognized in Other Comprehensive Loss	(586)	(1,923)	(11,618)	(10,586)
Loss Reclassified into Income	$ (2,707)	$ (602)	$ (6,224)	$ (1,308)

Summary of Activity of Designat

Summary of Activity of Designated Cash Flow Hedges in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019
Derivative [Line Items]
Beginning balance	$ 1,279,037	$ 1,227,087
Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit	384
Ending balance	1,399,303	1,247,353
Gains (Losses) on Cash Flow Hedges
Derivative [Line Items]
Beginning balance	(9,617)	(4,214)
Changes in fair value loss, net of tax	(8,667)	(8,164)
Reclassification to earnings, net of tax	4,727	1,128
Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit	384
Ending balance	$ (13,173)	$ (11,250)

Schedule of Accumulated Other C

Schedule of Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 28, 2020	Jun. 29, 2020	Mar. 30, 2020	Sep. 30, 2019	Jul. 01, 2019	Apr. 01, 2019	Sep. 28, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,433,955	$ 1,277,200	$ 1,279,037	$ 1,229,077	$ 1,226,859	$ 1,227,087	$ 1,279,037	$ 1,227,087
Reclassification adjustment for foreign currency translation	(346)						(346)
Derecognition of foreign currency translation adjustments due to sale of Mobility business unit							(27,341)
Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit							384
Other comprehensive income (loss), net of tax	2,129	(27,092)	(5,498)	(2,256)	(4,808)	(901)	(30,461)	(7,965)
Ending balance	1,399,303	1,433,955	1,277,200	1,247,353	1,229,077	1,226,859	1,399,303	1,247,353
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			1,115				1,115
Other comprehensive income (loss) before reclassifications							778
Reclassification adjustment for foreign currency translation							(346)
Derecognition of foreign currency translation adjustments due to sale of Mobility business unit							(27,341)
Other comprehensive income (loss), net of tax							(26,909)
Ending balance	(25,794)						(25,794)
Pension Obligation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(1,584)				(1,584)
Other comprehensive income (loss) before reclassifications							4
Other comprehensive income (loss), net of tax							4
Ending balance	(1,580)						(1,580)
(Losses) Gains on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(9,617)			(4,214)	(9,617)	(4,214)
Other comprehensive income (loss) before reclassifications							(8,667)	(8,164)
Amounts reclassified from accumulated other comprehensive loss							4,727	1,128
Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit							384
Other comprehensive income (loss), net of tax							(3,556)
Ending balance	(13,173)			(11,250)			(13,173)	(11,250)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(42,676)	(15,584)	(10,086)	(9,629)	(4,821)	(3,920)	(10,086)	(3,920)
Other comprehensive income (loss) before reclassifications							(7,885)
Amounts reclassified from accumulated other comprehensive loss							4,727
Reclassification adjustment for foreign currency translation							(346)
Derecognition of foreign currency translation adjustments due to sale of Mobility business unit							(27,341)
Derecognition of unrealized losses on cash flow hedge due to sale of Mobility business unit							384
Other comprehensive income (loss), net of tax	2,129	(27,092)	(5,498)	(2,256)	(4,808)	(901)	(30,461)
Ending balance	$ (40,547)	$ (42,676)	$ (15,584)	$ (11,885)	$ (9,629)	$ (4,821)	$ (40,547)	$ (11,885)

Significant Customers and Con_2

Significant Customers and Concentration of Credit Risk - Additional Information (Detail) - Customer	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Concentration Risk [Line Items]
Number of customers contributing to more than ten percent of revenue	1	0	1	0
Net Sales | Customer Concentration Risk
Concentration Risk [Line Items]
Percentage of net sales, accounted by one customer	13.00%		10.00%

Carrying Amount and Estimated F

Carrying Amount and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 28, 2020	Dec. 30, 2019
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets, current	$ 19	$ 1
Derivative liabilities, current		3
Derivative liabilities, non-current	17,461	12,067
Carrying Amount | 1.75% Convertible Senior Notes due December 15, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	247,568	239,053
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets, current	19	1
Derivative liabilities, current		3
Derivative liabilities, non-current	17,461	12,067
Fair Value | 1.75% Convertible Senior Notes due December 15, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	297,145	391,686
Term Loan Due September 2024 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	402,151	797,200
Term Loan Due September 2024 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	396,240	808,901
Senior Notes Due October 2025 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	370,279	369,684
Senior Notes Due October 2025 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	384,240	390,143
ABL Revolving Loans | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	70,000	70,000
ABL Revolving Loans | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 70,000	$ 70,000

Fair Value Measures - Additiona

Fair Value Measures - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2020	Sep. 28, 2020	Dec. 30, 2019	Sep. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, cash equivalents, and restricted cash	$ 663,285	$ 663,285		$ 296,359
Goodwill	637,324	637,324	$ 706,524
Non-cash goodwill impairment charge	69,200	69,200
RF&S Components
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	108,000	108,000	$ 177,200
Non-cash goodwill impairment charge	69,200	69,200
Domestic Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, cash equivalents, and restricted cash	429,470	429,470
Foreign Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, cash equivalents, and restricted cash	$ 233,815	$ 233,815

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		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net (loss) income from continuing operations	$ (61,472)	$ 2,393	$ (55,346)	$ 21,124
Basic weighted average shares	106,729	105,492	106,130	105,092
Dilutive effect of performance-based restricted stock units, restricted stock units and stock options		982		973
Diluted shares	106,729	106,474	106,130	106,065
(Loss) earnings per share:
Basic	$ (0.58)	$ 0.02	$ (0.52)	$ 0.20
Diluted	$ (0.58)	$ 0.02	$ (0.52)	$ 0.20

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit	$ 11.83		$ 11.83
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	80		80
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	3,187		3,187
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	216		216
PRUs, RSUs and Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from calculating diluted earnings per share		407		862

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		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 4,479	$ 4,662	$ 11,961	$ 12,190
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	1,173	937	2,643	2,210
Selling and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	557	574	1,299	1,408
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	2,705	3,089	7,872	8,421
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 44	$ 62	$ 147	$ 151

Summary of Unrecognized Compens

Summary of Unrecognized Compensation Costs (Detail) $ in Thousands	9 Months Ended
	Sep. 28, 2020USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 26,978
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 24,422
Remaining Weighted Average Recognition Period (years)	1 year 6 months
Performance-Based Restricted Stock Units (PRUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 2,402
Remaining Weighted Average Recognition Period (years)	1 year 7 months 6 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Stock-Based Compensation Cost	$ 154
Remaining Weighted Average Recognition Period (years)	1 year 4 months 24 days

Segment Information - Additiona

Segment Information - Additional Information (Detail) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 28, 2020USD ($)	Jun. 29, 2020Segment	Sep. 28, 2020USD ($)Country
Segment Reporting Information [Line Items]
Number of reportable segments | Segment		2
Impairment of goodwill	$ 69,200		$ 69,200
Number of countries the parent company markets and sells its products | Country			53
Percentage of total net sales, if exceed, the company does not conduct business			10.00%
RF&S Components
Segment Reporting Information [Line Items]
Impairment of goodwill	$ 69,200		$ 69,200

Reconciliation of Operating Inc

Reconciliation of Operating Income (Loss) from Segments to Consolidated By Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 513,576	$ 534,173	$ 1,581,520	$ 1,597,495
Operating (loss) income	(40,252)	21,131	(1,074)	80,239
Amortization of definite-lived intangibles	(11,510)	(10,680)	(33,400)	(39,784)
Total other expense	(22,520)	(14,548)	(57,916)	(53,586)
(Loss) income before income taxes	(62,772)	6,583	(58,990)	26,653
Printed Circuit Board
Segment Reporting Information [Line Items]
Net sales	463,664	452,816	1,429,629	1,366,762
RF&S Components
Segment Reporting Information [Line Items]
Net sales	11,742	13,644	33,274	51,725
E-M Solutions
Segment Reporting Information [Line Items]
Net sales	38,170	67,713	118,617	179,008
Operating Segment
Segment Reporting Information [Line Items]
Operating (loss) income	(28,742)	31,811	32,326	120,023
Operating Segment | Printed Circuit Board
Segment Reporting Information [Line Items]
Net sales	463,664	452,816	1,429,629	1,366,762
Operating (loss) income	64,219	51,326	199,683	164,458
Operating Segment | RF&S Components
Segment Reporting Information [Line Items]
Net sales	11,742	13,644	33,274	51,725
Operating (loss) income	(66,098)	5,999	(59,880)	25,824
Operating Segment | E-M Solutions
Segment Reporting Information [Line Items]
Net sales	38,170	67,713	118,617	179,008
Operating (loss) income	(873)	3,236	(20,779)	5,278
Corporate
Segment Reporting Information [Line Items]
Operating (loss) income	$ (25,990)	$ (28,750)	$ (86,698)	$ (75,537)

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		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Amortization of definite-lived intangibles	$ 1,384	$ 1,180	$ 4,151	$ 3,539
Printed Circuit Board and RF&S Components
Segment Reporting Information [Line Items]
Amortization of definite-lived intangibles	$ 1,384	$ 1,180	$ 4,151	$ 3,539

Net Sales (Detail)

Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 513,576	$ 534,173	$ 1,581,520	$ 1,597,495
United States
Segment Reporting Information [Line Items]
Net sales	271,050	281,875	802,681	841,196
China
Segment Reporting Information [Line Items]
Net sales	80,696	75,692	252,736	254,888
Other
Segment Reporting Information [Line Items]
Net sales	$ 161,830	$ 176,606	$ 526,103	$ 501,411

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019	Dec. 30, 2019
Related Party Transaction [Line Items]
Accounts payable due to related parties	$ 6,786		$ 6,786		$ 9,220
Foreign Subsidiaries
Related Party Transaction [Line Items]
Purchases from related party	$ 5,760	$ 7,151	$ 17,527	$ 22,847

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail) $ in Thousands	Sep. 28, 2020USD ($)	Apr. 29, 2020Facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 14,671
Accelerated depreciation expense	5,694
E-M Solutions
Restructuring Cost and Reserve [Line Items]
Number of manufacturing facilities | Facility		3
Accelerated depreciation expense	8,000
Estimated total charges related to restructuring	$ 18,500
E-M Solutions | Shanghai
Restructuring Cost and Reserve [Line Items]
Number of manufacturing facilities | Facility		2
E-M Solutions | Shenzhen
Restructuring Cost and Reserve [Line Items]
Number of manufacturing facilities | Facility		1

Summary of Restructuring Costs

Summary of Restructuring Costs (Detail) - USD ($) $ in Thousands	Sep. 28, 2020	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Reportable Segment:
Restructuring charges	$ 14,671
General and administrative
Reportable Segment:
Restructuring charges		$ 1,088	$ 12	$ 14,830	$ 3,176
General and administrative | Employee Separation/ Severance
Reportable Segment:
Restructuring charges		979	5	14,365	3,153
General and administrative | Contract Termination and Other Costs
Reportable Segment:
Restructuring charges		109	7	465	23
General and administrative | Reportable Segment | Printed Circuit Board
Reportable Segment:
Restructuring charges			5	6	2,941
General and administrative | Reportable Segment | E-M Solutions
Reportable Segment:
Restructuring charges		986		14,671
General and administrative | Reportable Segment | RF&S Components
Reportable Segment:
Restructuring charges					52
General and administrative | Reportable Segment | Employee Separation/ Severance | Printed Circuit Board
Reportable Segment:
Restructuring charges			5	(8)	2,941
General and administrative | Reportable Segment | Employee Separation/ Severance | E-M Solutions
Reportable Segment:
Restructuring charges		979		14,373
General and administrative | Reportable Segment | Employee Separation/ Severance | RF&S Components
Reportable Segment:
Restructuring charges					52
General and administrative | Reportable Segment | Contract Termination and Other Costs | Printed Circuit Board
Reportable Segment:
Restructuring charges				14
General and administrative | Reportable Segment | Contract Termination and Other Costs | E-M Solutions
Reportable Segment:
Restructuring charges		7		298
General and administrative | Corporate
Reportable Segment:
Restructuring charges		102	7	153	183
General and administrative | Corporate | Employee Separation/ Severance
Reportable Segment:
Restructuring charges					160
General and administrative | Corporate | Contract Termination and Other Costs
Reportable Segment:
Restructuring charges		$ 102	$ 7	$ 153	$ 23

Accrued Restructuring Costs (De

Accrued Restructuring Costs (Detail) $ in Thousands	9 Months Ended
	Sep. 28, 2020USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 502
Charged to expense	14,830
Amount paid	(3,637)
Ending balance	11,695
Employee Separation/ Severance
Restructuring Cost and Reserve [Line Items]
Beginning balance	260
Charged to expense	14,365
Amount paid	(3,139)
Ending balance	11,486
Contract Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Beginning balance	242
Charged to expense	465
Amount paid	(498)
Ending balance	$ 209