Teradyne (TER) 10-K 22 Feb 23 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2022	Feb. 17, 2023	Jul. 01, 2022
Cover [Abstract]
Amendment Flag	false
Document Type	10-K
Document Fiscal Year Focus	2022
Entity Central Index Key	0000097210
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Document Period End Date	Dec. 31, 2022
Entity Registrant Name	TERADYNE, INC.
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 10
Trading Symbol	TER
Document Annual Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ
Entity File Number	001-06462
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-2272148
Entity Address, Address Line One	600 RIVERPARK DRIVE
Entity Address, City or Town	NORTH READING
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01864
City Area Code	978
Local Phone Number	370-2700
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		156,047,868
ICFR Auditor Attestation Flag	true
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Boston, Massachusetts

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents		$ 854,773	$ 1,122,199
Marketable securities		39,612	244,231
Accounts receivable, less allowance for credit losses of $1,955 and $2,012 in 2022 and 2021, respectively		491,145	550,749
Inventories, net		325,019	243,330
Prepayments		532,962	406,266
Other current assets		14,404	9,452
Total current assets		2,257,915	2,576,227
Property, plant and equipment, net		418,683	387,240
Operating lease right-of-use assets, net		73,734	68,807
Marketable securities		110,777	133,858
Deferred tax assets		142,784	102,428
Retirement plans assets		11,761	15,110
Other assets		28,925	24,096
Acquired intangible assets, net		53,478	75,635
Goodwill		403,195	426,024
Total assets	[1]	3,501,252	3,809,425
Current liabilities:
Accounts payable		139,722	153,133
Accrued employees' compensation and withholdings		212,266	253,667
Deferred revenue and customer advances		148,285	146,185
Other accrued liabilities		112,271	124,187
Operating lease liabilities		18,594	19,977
Income taxes payable		65,010	88,789
Current debt		50,115	19,182
Total current liabilities		746,263	805,120
Retirement plans liabilities		116,005	151,141
Long-term deferred revenue and customer advances		45,131	54,921
Deferred tax liabilities		3,267	6,327
Long-term other accrued liabilities		15,981	15,497
Long-term operating lease liabilities		64,176	56,178
Long-term incomes taxes payable		59,135	67,041
Debt		0	89,244
Total liabilities		1,049,958	1,245,469
Commitments and contingencies (Note M)
Mezzanine equity:
Convertible common shares		0	1,512
SHAREHOLDERS' EQUITY
Common stock, $0.125 par value, 1,000,000 shares authorized, 155,759 and 162,251 shares issued and outstanding at December 31, 2022 and 2021, respectively		19,470	20,281
Additional paid-in capital		1,755,963	1,811,545
Accumulated other comprehensive loss		(49,868)	(5,948)
Retained earnings (accumulated deficit)		725,729	736,566
Total shareholders' equity		2,451,294	2,562,444
Total liabilities, convertible common shares and shareholders' equity		$ 3,501,252	$ 3,809,425
[1]Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts receivable, less allowance for doubtful accounts	$ 1,955	$ 2,012
Common stock, par value	$ 0.125	$ 0.125
Common stock, shares authorized	1,000,000	1,000,000
Common stock, shares issued	155,759	162,251
Common stock, shares outstanding	155,759	162,251

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Total revenues	[1],[2]	$ 3,155,045	$ 3,702,881	$ 3,121,469
Cost of revenues:
Total cost of revenues (exclusive of acquired intangible assets amortization shown separately below)		1,287,894	1,496,225	1,335,728
Gross profit		1,867,151	2,206,656	1,785,741
Operating expenses:
Selling and administrative		558,103	547,559	464,769
Engineering and development		440,591	427,609	374,964
Acquired intangible assets amortization		19,333	21,456	30,803
Restructuring and other		17,185	9,312	(13,202)
Total operating expenses		1,035,212	1,005,936	857,334
Income from operations		831,939	1,200,720	928,407
Non-operating (income) expenses:
Interest income		(6,379)	(2,627)	(5,982)
Interest expense		3,719	17,820	24,182
Other (income) expense, net		(5,786)	24,572	9,192
Income before income taxes	[3],[4]	840,385	1,160,955	901,015
Income tax provision		124,884	146,366	116,868
Net income		$ 715,501	$ 1,014,589	$ 784,147
Net income per common share:
Basic		$ 4.52	$ 6.15	$ 4.72
Diluted		$ 4.22	$ 5.53	$ 4.28
Weighted average common shares—basic		158,434	164,960	166,120
Weighted average common shares—diluted		169,734	183,625	183,042
Product [Member]
Revenues:
Total revenues		$ 2,591,572	$ 3,196,575	$ 2,690,906
Cost of revenues:
Total cost of revenues (exclusive of acquired intangible assets amortization shown separately below)		1,042,555	1,300,106	1,157,476
Service [Member]
Revenues:
Total revenues		563,473	506,306	430,563
Cost of revenues:
Total cost of revenues (exclusive of acquired intangible assets amortization shown separately below)		$ 245,339	$ 196,119	$ 178,252
[1]Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”[2]Revenues attributable to a country are based on location of customer site.[3]Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), net cash flow hedge gains (losses), intercompany eliminations, pension and postretirement plan actuarial gains (losses), legal and environmental fees, contingent consideration adjustments, acquisition related charges and compensation, gain on sale of asset, and loss on convertible debt conversions in 2021.[4]Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and loss on convertible debt conversions in 2021.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net income	$ 715,501	$ 1,014,589	$ 784,147
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment, net of tax of $0, $0, $0, respectively	(29,031)	(36,207)	48,903
Available-for-sale marketable securities:
Unrealized (losses) gains on marketable securities arising during period, net of tax of $(3,388), $(578), $1,629, respectively	(12,666)	(2,255)	5,839
Less: Reclassification adjustment for losses (gains) included in net income, net of tax of $25, $(277), $(665), respectively	301	(995)	(2,365)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Total	(12,365)	(3,250)	3,474
Cash flow hedges:
Unrealized losses arising during period, net of tax of $(708), $0, $0, respectively	(2,517)	0	0
Defined benefit pension and post-retirement plans:
Amortization of prior service credit, net of tax $(2), $(2), $(2), respectively	(7)	(7)	(7)
Other comprehensive (loss) income	(43,920)	(39,464)	52,370
Comprehensive income	$ 671,581	$ 975,125	$ 836,517

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Foreign currency translation adjustments, tax	$ 0	$ 0	$ 0
Unrealized gains (losses) on marketable securities arising during period, net of tax	(3,388)	(578)	1,629
Reclassification adjustment for (gains) losses included in net income, net of tax	25	(277)	(665)
Amortization of prior service credit, net of tax	(2)	(2)	(2)
Cash flow hedges Unrealized gains	$ (708)	$ 0	$ 0

CONSOLIDATED STATEMENTS OF CONV

CONSOLIDATED STATEMENTS OF CONVERTIBLE COMMON SHARES AND SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Common Stock Convertible Common Shares	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Retained Earnings (Accumulated Deficit)
Balance at Dec. 31, 2019	$ 1,480,158	$ 20,801		$ 1,720,129	$ (18,854)	$ (241,918)
Balance, Shares at Dec. 31, 2019		166,410,000	0
Net issuance of common stock under stock-based plans	4,850	$ 154		4,696
Net issuance of common stock under stock-based plans (in shares)		1,230,000
Stock-based compensation expense	44,285			44,285
Repurchase of common stock	(88,465)	$ (190)				(88,275)
Repurchase of common stock (in shares)		(1,517,000)
Cash dividends	(66,540)					(66,540)
Convertible common shares	(3,787)			(3,787)
Convertible common shares (in shares)			3,787,000
Net income	784,147					784,147
Other comprehensive income/loss	52,370				52,370
Balance at Dec. 31, 2020	2,207,018	$ 20,765		1,765,323	33,516	387,414
Balance, Shares at Dec. 31, 2020		166,123,000	3,787,000
Net issuance of common stock under stock-based plans		$ 113		(225)	(112)
Net issuance of common stock under stock-based plans (in shares)		899,000
Stock-based compensation expense	45,632			45,632
Repurchase of common stock	(600,000)	$ (597)				(599,403)
Repurchase of common stock (in shares)		(4,771,000)
Cash dividends	(66,034)					(66,034)
Convertible common shares	2,275			2,275
Convertible common shares (in shares)			(2,275,000)
Settlements of convertible notes	985,640	$ 1,018		984,622
Settlement of convertible notes (in shares)		8,148,000
Exercise of convertible notes hedge call options	(987,100)	$ (1,018)		(986,082)
Exercise of convertible notes hedge call options (in shares)		(8,148,000)
Net income	1,014,589					1,014,589
Other comprehensive income/loss	(39,464)				(39,464)
Balance at Dec. 31, 2021	2,562,444	$ 20,281		1,811,545	(5,948)	736,566
Balance, Shares at Dec. 31, 2021		162,251,000	1,512,000
Net issuance of common stock under stock-based plans	(4,375)	$ 96		(4,471)
Net issuance of common stock under stock-based plans (in shares)		761,000
Stock-based compensation expense	48,466			48,466
Repurchase of common stock	(752,082)	$ (907)				(751,175)
Repurchase of common stock (in shares)		(7,253,000)
Cash dividends	(69,763)					(69,763)
Convertible common shares	1,512			1,512
Convertible common shares (in shares)			(1,512,000)
Settlements of convertible notes	(255)	$ 187		(442)
Settlement of convertible notes (in shares)		1,495,000
Exercise of convertible notes hedge call options		$ (187)		187
Exercise of convertible notes hedge call options (in shares)		(1,495,000)
Cumulative effect of change in accounting principle related to convertible debt	(6,234)			(100,834)		94,600
Net income	715,501					715,501
Other comprehensive income/loss	(43,920)				(43,920)
Balance at Dec. 31, 2022	$ 2,451,294	$ 19,470		$ 1,755,963	$ (49,868)	$ 725,729
Balance, Shares at Dec. 31, 2022		155,759,000	0

CONSOLIDATED STATEMENTS OF CO_3

CONSOLIDATED STATEMENTS OF CONVERTIBLE COMMON SHARES AND SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Common Stock, Dividends, Per Share, Cash Paid	$ 0.44	$ 0.4	$ 0.4

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 715,501	$ 1,014,589	$ 784,147
Adjustments to reconcile net income from operations to net cash provided by operating activities:
Depreciation	90,763	91,073	80,119
Stock-based compensation	48,228	45,643	44,906
Provision for excess and obsolete inventory	31,452	15,475	17,534
Amortization	19,912	34,412	46,624
Deferred taxes	(38,693)	(17,305)	(15,688)
Retirement plans actuarial (gains) losses	(25,584)	(2,217)	10,284
Losses (gains) on investments	9,985	(6,410)	(7,898)
Gains on sale of asset	(3,410)	0	0
Loss on convertible debt conversion	0	28,828	0
Contingent consideration adjustment	0	(7,227)	(23,271)
Other	2,353	271	1,557
Changes in operating assets and liabilities, net of businesses acquired:
Accounts receivable	50,628	(57,778)	(129,451)
Inventories	(80,809)	6,495	(8,438)
Prepayments and other assets	(140,713)	(175,846)	(64,418)
Accounts payable and other accrued expenses	(60,507)	129,499	73,167
Deferred revenue and customer advances	(6,233)	9,873	39,974
Retirement plans contributions	(5,116)	(5,405)	(5,382)
Income taxes	(29,834)	(5,604)	25,169
Net cash provided by operating activities	577,923	1,098,366	868,935
Cash flows from investing activities:
Purchases of property, plant and equipment	(163,249)	(132,472)	(184,977)
Purchases of marketable securities	(287,409)	(661,781)	(900,196)
Proceeds from maturities of marketable securities	222,941	660,148	479,678
Proceeds from sales of marketable securities	268,058	266,466	35,006
Proceeds from sale of asset	3,410	0	0
Purchase of investment and acquisition of business	0	(12,000)	149
Proceeds from life insurance	0	0	546
Net cash provided by (used for) investing activities	43,751	120,361	(569,794)
Cash flows from financing activities:
Repurchase of common stock	(752,082)	(600,000)	(88,465)
Payments of convertible debt principal	(66,759)	(342,990)	0
Issuance of common stock under stock purchase and stock option plans	28,733	32,686	28,527
Dividend payments	(69,711)	(65,977)	(66,482)
Payments related to net settlement of employee stock compensation awards	(33,170)	(32,303)	(23,014)
Payments of contingent consideration	0	0	(8,852)
Net cash used for financing activities	(892,989)	(1,008,584)	(158,286)
Effects of exchange rate changes on cash and cash equivalents	3,889	(2,065)	(658)
(Decrease) Increase in cash and cash equivalents	(267,426)	208,078	140,197
Cash and cash equivalents at beginning of year	1,122,199	914,121	773,924
Cash and cash equivalents at end of year	854,773	1,122,199	914,121
Cash paid for:
Interest	1,498	4,236	6,435
Income taxes	193,246	172,134	106,577
Non-cash investing activities:
Capital expenditures incurred but not yet paid:	$ 1,826	$ 1,973	$ 3,666

The Company

The Company	12 Months Ended
	Dec. 31, 2022
The Company	A. THE COMPANY Teradyne, Inc. (“Teradyne”) is a leading global supplier of automated test equipment and robotics solutions. Teradyne designs, develops, manufactures and sells automatic test systems and robotics products. Teradyne’s automatic test systems are used to test semiconductors, wireless products, data storage and complex electronics systems in many industries including consumer electronics, wireless, automotive, industrial, computing, communications, and aerospace and defense industries. Teradyne’s robotics products include collaborative robotic arms, autonomous mobile robots, and advanced robotic control software used by global manufacturing, logistics and industrial customers to improve quality, increase manufacturing and material handling efficiency and decrease manufacturing and logistics costs. Teradyne’s automatic test equipment and robotics products and services include: • semiconductor test (“Semiconductor Test”) systems; • storage and system level test (“Storage Test”) systems, defense/aerospace (“Defense/Aerospace”) test instrumentation and systems, and circuit-board test and inspection (“Production Board Test”) systems (collectively these products represent “System Test”); • wireless test (“Wireless Test”) systems; and • robotics (“Robotics”) products.

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2022
Accounting Policies	B. ACCOUNTING POLICIES The consolidated financial statements include the accounts of Teradyne and its wholly owned subsidiaries. All significant intercompany balances and transactions are eliminated. Certain prior years’ amounts were reclassified to conform to the current year presentation. Preparation of Financial Statements and Use of Estimates The preparation of consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. On an on-going basis, management evaluates its estimates, including those related to inventories, investments, goodwill, intangible and other long-lived assets, accounts receivable, income taxes, deferred tax assets and liabilities, pensions, warranties, contingent consideration liabilities, and loss contingencies. Management bases its estimates on historical experience and on appropriate and customary assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Due to the COVID-19 pandemic, there has been uncertainty and disruption in the global economy and our markets. Management is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Annual Report on Form 10-K. These estimates may change, as new events occur and additional information is obtained. Actual results may differ significantly from these estimates under different assumptions or conditions. Revenue Recognition Revenue from Contracts with Customers In accordance with ASC 606, Teradyne recognizes revenues, when or as control is transferred to a customer. Teradyne’s determination of revenue is dependent upon a five-step process outlined below. • Teradyne accounts for a contract with a customer when there is written approval, the contract is committed, the rights of the parties, including payment terms, are identified, the contract has commercial substance and consideration is probable of collection. • Teradyne periodically enters into contracts with customers in which a customer may purchase a combination of goods and services, such as products with extended warranty obligations. Teradyne determines performance obligations by assessing whether the products or services are distinct from the other elements of the contract. In order to be distinct, the product or service must perform either on its own or with readily available resources and must be separate within the context of the contract. • Teradyne determines the transaction price to be the amount of consideration to which Teradyne expects to be entitled to. • Transaction price is allocated to each individual performance obligation based on the standalone selling price of that performance obligation. Teradyne uses standalone transactions when available to value each performance obligation. If standalone transactions are not available, Teradyne will estimate the standalone selling price through market assessments or cost plus a reasonable margin analysis. Any discounts from standalone selling price are spread proportionally to each performance obligation. • In order to determine the appropriate timing for revenue recognition, Teradyne first determines if the transaction meets any of three criteria for over time recognition. If the transaction meets the criteria for over time recognition, Teradyne recognizes revenue as the good or service is delivered. Teradyne uses input variables such as hours or months utilized or costs incurred to determine the amount of revenue to recognize in a given period. Input variables are used as they best align consumption with benefit to the customer. For transactions that do not meet the criteria for over time recognition, Teradyne will recognize revenue at a point in time based on an assessment of the five criteria for transfer of control. Teradyne has concluded that revenue should be recognized when shipped or delivered based on contractual terms. Typically, acceptance of Teradyne’s products and services is a formality as Teradyne delivers similar systems, instruments and robots to standard specifications. In cases where acceptance is not deemed a formality, Teradyne will defer revenue recognition until customer acceptance. Performance Obligations Products Teradyne products consist primarily of semiconductor test systems and instruments, defense/aerospace test instrumentation and systems, storage test systems and instruments, circuit-board test and inspection systems and instruments, wireless test systems and robotics products. Teradyne’s hardware is recognized at a point in time upon transfer of control to the customer. Services Teradyne services consist of extended warranties, training and application support, service agreements, post contract customer support (“PCS”) and replacement parts. Each service is recognized based on relative standalone selling price. Extended warranty, training and support, service agreements and PCS are recognized over time based on the period of service. Replacement parts are recognized at a point in time upon transfer of control to the customer. Teradyne does not allow customer returns or provide refunds to customers for any products or services. Teradyne products include a standa rd 12 -month warranty. This warranty is not considered a distinct performance obligation because it does not obligate Teradyne to provide a separate service to the customer and it cannot be purchased separately. Cost related to warranties are included in cost of revenues when product revenues are recognized. As of December 31, 2022 and 2021, deferred revenue and customer advances consisted of the following and are included in the short and long-term deferred revenue and customer advances: 2022 2021 (in thousands) Maintenance, service and training $ 78,089 $ 81,826 Customer advances, undelivered elements and other 59,147 55,112 Extended warranty 56,180 64,168 Total deferred revenue and customer advances $ 193,416 $ 201,106 Product Warranty Teradyne generally provides a one-year warranty on its products, commencing upon installation, acceptance or shipment. A provision is recorded upon revenue recognition to cost of revenues for estimated warranty expense based on historical experience. Related costs are charged to the warranty accrual as incurred. The balance below is included in other accrued liabilities: Amount (in thousands) Balance at December 31, 2019 $ 8,996 Accruals for warranties issued during the period 28,490 Accruals related to pre-existing warranties 821 Settlements made during the period (21,674 ) Balance at December 31, 2020 16,633 Accruals for warranties issued during the period 35,727 Accruals related to pre-existing warranties (6,846 ) Settlements made during the period (20,937 ) Balance at December 31, 2021 24,577 Accruals for warranties issued during the period 21,851 Accruals related to pre-existing warranties (5,618 ) Settlements made during the period (26,629 ) Balance at December 31, 2022 $ 14,181 When Teradyne receives revenue for extended warranties, beyond one year, it is deferred and recognized on a straight-line basis over the contract period. Related costs are expensed as incurred. The balance below is included in short and long-term deferred revenue and customer advances: Amount (in thousands) Balance at December 31, 2019 $ 30,677 Deferral of new extended warranty revenue 41,694 Recognition of extended warranty deferred revenue (20,442 ) Balance at December 31, 2020 51,929 Deferral of new extended warranty revenue 43,597 Recognition of extended warranty deferred revenue (31,358 ) Balance at December 31, 2021 64,168 Deferral of new extended warranty revenue 33,686 Recognition of extended warranty deferred revenue (41,674 ) Balance at December 31, 2022 $ 56,180 Accounts Receivable and Allowance for Doubtful Accounts Trade accounts receivable are recorded at the invoiced amount and do not bear interest. Teradyne maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. Estimated allowances for doubtful accounts are reviewed periodically taking into account the customer’s recent payment history, the customer’s current financial statements and other information regarding the customer’s credit worthiness. Account balances are written off against the allowance when it is determined the receivable will not be recovered. Teradyne sells certain trade accounts receivables on a non-recourse basis to third-party financial institutions pursuant to factoring agreements. Teradyne accounts for these transactions as sales of receivables and presents cash proceeds as a cash provided by operating activities in the consolidated statements of cash flows. Total trade accounts receivable sold under the factoring agreements were $93.9 million and $111.3 million during 2022 and 2021, respectively. Factoring fees for the sales of receivables are recorded in interest expense and are not material. Inventories Inventories are stated at the lower of cost (first-in, first-out basis) or net realizable value. On a quarterly basis, Teradyne uses consistent methodologies to evaluate all inventories for net realizable value. Teradyne records a provision for both excess and obsolete inventory when such write-downs or write-offs are identified through the quarterly review process. The inventory valuation is based upon assumptions about future demand, product mix and possible alternative uses. Investments Teradyne accounts for its investments in debt and equity securities in accordance with the provisions of ASC 320-10, “ Investments—Debt and Equity Securities • The length of time and the extent to which the market value has been less than cost; • The financial condition and near-term prospects of the issuer; and • The intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in market value. Teradyne uses the market and income approach techniques to value its financial instruments and there were no changes in valuation techniques during the twelve months ended December 31, 2022 and 2021. Teradyne measures its debt and equity investments at fair value, in accordance with ASC 820-10 , “ Fair Value Measurements and Disclosures. Level 1: Quoted prices in active markets for identical assets as of the reporting date; Level 2: Inputs other than Level 1, that are observable either directly or indirectly as of the reporting date. For example, a common approach for valuing fixed income securities is the use of matrix pricing. Matrix pricing is a mathematical technique used to value securities by relying on the securities’ relationship to other benchmark quoted prices, and is considered a Level 2 input; or Level 3: Unobservable inputs that are not supported by market data. Unobservable inputs are developed based on the best information available, which might include Teradyne’s own data. Teradyne’s debt investments are classified as Level 2, and equity investments are classified as Level 1. Acquisition-related contingent consideration is classified as Level 3. Teradyne determines the fair value of acquisition-related contingent consideration using a Monte Carlo simulation model. Assumptions utilized in the model include forecasted revenues, revenue volatility, earnings before interest and taxes, and discount rate. Financial Assets and Financial Liabilities Teradyne records changes in fair value of equity securities directly in earnings and realized gains and losses in other (income) expense, net, in accordance with ASU 2016-01, “ Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities Prepayments Prepayments consist of the following: 2022 2021 (in thousands) Contract manufacturer and supplier prepayments $ 491,105 $ 364,478 Prepaid taxes 18,625 15,090 Prepaid maintenance and other services 14,545 13,660 Other prepayments 8,687 13,038 Total prepayments $ 532,962 $ 406,266 Retirement and Postretirement Plans Teradyne recognizes net actuarial gains and losses and the change in the fair value of the plan assets in its operating results in the year in which they occur or upon any interim remeasurement of the plans. Teradyne calculates the expected return on plan assets using the fair value of the plan assets. Actuarial gains and losses are generally measured annually as of December 31 and, accordingly, recorded during the fourth quarter of each year or upon any interim remeasurement of the plans. Teradyne reports net periodic pension cost and net periodic postretirement benefit costs in accordance with ASU 2017-07, “ Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost actuarial Goodwill, Intangible and Long-Lived Assets Teradyne accounts for goodwill and intangible assets in accordance with ASC 350-10, “ Intangibles-Goodwill and Other. In accordance with ASC 350-10, Teradyne has the option to perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If Teradyne determines this is the case, Teradyne is required to perform a quantitative goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized. If Teradyne determines that it is more likely than not that the fair value of the reporting unit is greater than its carrying amounts, a quantitative goodwill impairment test is not required. In accordance with ASC 360-10, “ Impairment or Disposal of Long-Lived Assets, Business Combination Teradyne recognizes the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The fair value of identifiable intangible assets is based on detailed cash flows valuations that use information and assumptions provided by management. Teradyne estimates the fair value of contingent consideration at the time of the acquisition using all pertinent information known to us at the time to assess the probability of payment of contingent amounts or through the use of a Monte Carlo simulation model. Teradyne allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired and liabilities assumed to goodwill. The assumptions used in the valuations for our acquisitions may differ materially from actual results depending on performance of the acquired businesses and other factors. While Teradyne believes the assumptions used were appropriate, different assumptions in the valuation of assets acquired and liabilities assumed could have a material impact on the timing and extent of impact on our statements of operations. Goodwill is assigned to reporting units as of the date of the related acquisition. Property, Plant and Equipment Property, plant and equipment are stated at cost and depreciated over the estimated useful lives of the assets. Leasehold improvements and major renewals are capitalized and included in property, plant and equipment accounts, while expenditures for maintenance and repairs and minor renewals are charged to expense. When assets are retired, the assets and related accumulated depreciation are removed from the accounts and any resulting gain or loss is reflected in the consolidated statements of operations. Teradyne provides for depreciation of its assets principally on the straight-line method with the cost of the assets being charged to expense over their useful lives as follows: Buildings 40 years Building improvements 5 to 10 years Leasehold improvements Lesser of lease term or 10 Furniture and fixtures 10 years Test systems manufactured internally 6 years Machinery, equipment and software 3 to 5 years Test systems manufactured internally are used by Teradyne for customer evaluations and manufacturing and support of its customers. Teradyne depreciates the test systems manufactured internally over a six-year life to cost of revenues, engineering and development, and selling and administrative expenses. Teradyne often sells internally manufactured test equipment to customers. Upon the sale of an internally manufactured test system, the net book value of the system is transferred to inventory and expensed as cost of revenues. The net book value of internally manufactured test systems sold in the years ended December 31, 2022, 2021, and 2020 was $6.6 million, $16.6 million, and $7.3 million, respectively. Convertible Debt Teradyne adopted Accounting Standards Update (“ASU”) ASU 2020-06 – “Debt—Debt with Conversion and Other Options and Derivatives and Hedging—Contracts in Entity’s Own Equity,” on January 1, 2022 using the modified retrospective method of adoption. As a result of adoption, Teradyne recorded an increase of $1.4 million to current debt for unsettled shares, an increase of $1.8 million to deferred tax assets, an increase of $6.6 million to long-term debt for unamortized debt discount, and an increase to retained earnings of $94.6 million for the reclassification of the equity component. Mezzanine equity representing unsettled shares value was reduced to zero and additional paid-in capital was reduced by $100.8 million. In accordance with ASU 2020-06, Teradyne accounts for a convertible debt instrument as a single liability measured at its amortized cost, as long as no other features require bifurcation and recognition as derivatives. Unsettled shares are recorded in current debt, and there is no recognition of a debt discount, which was previously amortized to interest expense. Settled shares reduce the outstanding debt balance in an amount equal to the cash paid, but do not result in any gain or loss on extinguishment. We use the if-converted method in the diluted EPS calculation for convertible instruments. Leases Under ASC 842, a contract is or contains a lease when Teradyne has the right to control the use of an identified asset. Teradyne determines if an arrangement is a lease at inception of the contract, which is the date on which the terms of the contract are agreed to and the agreement creates enforceable rights and obligations. The commencement date of the lease is the date that the lessor makes an underlying asset available for use by Teradyne. As of December 31, 2022, Teradyne does not have material leases that have not yet commenced. Teradyne determines if the lease is an operating or finance lease at the lease commencement date based upon the terms of the lease and the nature of the asset. The lease term used to calculate the lease liability includes options to extend or terminate the lease when it is reasonably certain that the option will be exercised. The lease liability is measured at the present value of future lease payments, discounted using the discount rate for the lease at the commencement date. As Teradyne is typically unable to determine the implicit rate, Teradyne uses an incremental borrowing rate based on the lease term and economic environment at commencement date. Teradyne initially measures payments based on an index by using the applicable rate at lease commencement. Variable payments that do not depend on an index are not included in the lease liability and are recognized as they are incurred. The right-of-use (“ROU”) asset is initially measured as the amount of lease liability, adjusted for any initial lease costs, prepaid lease payments, and reduced by any lease incentives. Teradyne’s contracts often include non-lease components such as common area maintenance. Teradyne elected the practical expedient to account for the lease and non-lease components as a single lease component. For leases with a term of one year or less, Teradyne has elected not to record the lease asset or liability. The lease payments are recognized in the consolidated statement of earnings on a straight-line basis over the lease term. Teradyne includes lease costs within cost of revenues and operating expenses. See Note I: “Leases.” Engineering and Development Costs Teradyne’s products are highly technical in nature and require a large and continuing engineering and development effort. Software development costs incurred prior to the establishment of technological feasibility are charged to expense. Software development costs incurred subsequent to the establishment of technological feasibility are capitalized until the product is available for release to customers. To date, the period between achieving technological feasibility and general availability of the product has been short and software development costs eligible for capitalization have not been material. Engineering and development costs are expensed as incurred and consist primarily of salaries, contractor fees including non-recurring engineering charges related to product design, allocated facility costs, depreciation, and tooling costs. Stock Compensation Plans and Employee Stock Purchase Plan Stock-based compensation expense is based on the grant-date fair value estimated in accordance with the provisions of ASC 718-10, “ Compensation-Stock Compensation Excess tax benefits or tax deficiencies are recognized as a discrete tax benefit or discrete tax expense to the current income tax provision in Teradyne’s consolidated statements of operations, all excess tax benefits related to share-based payments are reported as cash flows from operating activities, and all cash payments made to taxing authorities on the employees’ behalf for withheld shares are presented as financing activities on the statement of cash flows. Income Taxes Deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The measurement of deferred tax assets is reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. Teradyne performed the required assessment of positive and negative evidence regarding the realization of the net deferred tax assets in accordance with ASC 740, “Accounting for Income Taxes.” Advertising Costs Teradyne expenses all advertising costs as incurred. Advertising costs were $17.3 million, $13.4 million and $12.8 million in 2022, 2021 and 2020, respectively. Translation of Non-U.S. Currencies The functional currency for all non-U.S. subsidiaries is the U.S. dollar, except for Universal Robots, MiR and Lemsys for which the local currency is its functional currency. All foreign currency denominated monetary assets and liabilities are remeasured on a monthly basis into the functional currency using exchange rates in effect at the end of the period. All foreign currency denominated non-monetary assets and liabilities are remeasured into the functional currency using historical exchange rates. Net foreign exchange gains and losses resulting from remeasurement are included in other (income) expense, net. For Universal Robots, MiR and Lemsys, assets and liabilities are translated into U.S. dollars using exchange rates in effect at the end of the period. Revenues and expense amounts are translated using an average of exchange rates in effect during the period. Translation adjustments are recorded within accumulated other comprehensive income (loss) on the balance sheet. Net foreign exchange gains and losses resulting from remeasurement are included in other (income) expense, net. For the years ended December 31, 2022, 2021 and 2020, losses (gains) from the remeasurement of the monetary assets and liabilities denominated in foreign currencies were $10.8 million, $(2.1) million, and $2.6 million, respectively. These amounts do not reflect the corresponding (gains) losses from foreign exchange contracts. See Note H: “Financial Instruments” regarding foreign exchange contracts. Net Income per Common Share Basic net income per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Except where the result would be anti-dilutive, diluted net income per common share is calculated by dividing net income by the sum of the weighted average number of common shares plus common stock equivalents, if applicable. With respect to its convertible debt issued in 2016, Teradyne is required to settle the principal of the convertible debt in cash; accordingly, the principal amount is excluded from the determination of diluted earnings per share. As a result, Teradyne is accounting for the conversion spread using the treasury stock method. Comprehensive Income Comprehensive income includes net income, unrealized pension and postretirement prior service costs and benefits, unrealized gains and losses on investments in debt marketable securities, unrealized gains and losses on cash flow hedge and foreign currency translation adjustment.

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	12 Months Ended
	Dec. 31, 2022
Recently Issued Accounting Pronouncements	C. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS For the year ended December 31, 2022, there were no recently issued accounting pronouncements that had, or are expected to have, a material impact to our consolidated financial statements.

Investments in Other Company

Investments in Other Company	12 Months Ended
	Dec. 31, 2022
Investments in Other Company	D. INVESTMENT IN OTHER COMPANY On June 1, 2021, Teradyne invested $12.0 million in MachineMetrics, Inc. (“MachineMetrics”), a private company that develops and sells products to improve manufacturing performance through automated machine data collection, alerting, and analytics. Teradyne’s investment in MachineMetrics aligns with its strategy of providing and investing in leading edge products for automating industrial production processes in growing markets. The investment was recorded at cost and is evaluated for impairment or an indication of changes in fair value resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer on a quarterly basis. At December 31, 2022, the value of the investment was $12.0 million, and there was no change during the year ended December 31, 2022.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue	E. REVENUE Disaggregation of Revenue The following table provides information about disaggregated revenue by timing of revenue recognition, primary geographical market, and major product lines. Semiconductor Test Robotics System-on- Memory System Test Universal Mobile Wireless Test Corporate and Eliminations Total (in thousands) For the Year Ended December 31, 2022 (1) Timing of Revenue Recognition Point in Time $ 1,445,238 $ 344,693 $ 402,074 $ 317,514 $ 73,812 $ 189,040 $ 251 $ 2,772,622 Over Time 261,646 29,013 67,272 8,218 3,594 12,680 — 382,423 Total $ 1,706,884 $ 373,706 $ 469,346 $ 325,732 $ 77,406 $ 201,720 $ 251 $ 3,155,045 Geographical Market Asia Pacific $ 1,514,964 $ 360,176 $ 294,350 $ 73,930 $ 15,724 $ 140,767 $ — $ 2,399,911 Americas 122,575 11,987 146,040 112,203 35,213 47,350 251 475,619 Europe, Middle East and Africa 69,345 1,543 28,956 139,599 26,469 13,603 — 279,515 Total $ 1,706,884 $ 373,706 $ 469,346 $ 325,732 $ 77,406 $ 201,720 $ 251 $ 3,155,045 For the Year Ended December 31, 2021 (1) Timing of Revenue Recognition Point in Time $ 1,989,979 $ 365,441 $ 409,383 $ 305,512 $ 60,884 $ 204,247 $ — $ 3,335,446 Over Time 256,751 30,171 58,356 5,670 3,839 12,648 — 367,435 Total $ 2,246,730 $ 395,612 $ 467,739 $ 311,182 $ 64,723 $ 216,895 $ — $ 3,702,881 Geographical Market Asia Pacific $ 2,076,647 $ 381,444 $ 306,812 $ 81,456 $ 12,919 $ 172,103 $ — $ 3,031,381 Americas 102,702 10,665 135,230 94,897 26,069 36,173 — 405,736 Europe, Middle East and Africa 67,381 3,503 25,697 134,829 25,735 8,619 — 265,764 Total $ 2,246,730 $ 395,612 $ 467,739 $ 311,182 $ 64,723 $ 216,895 $ — $ 3,702,881 For the Year Ended December 31, 2020 (1) Timing of Revenue Recognition Point in Time $ 1,659,414 $ 363,324 $ 348,454 $ 214,212 $ 55,533 $ 163,834 $ (604 ) $ 2,804,167 Over Time 217,975 18,884 61,275 7,269 2,717 9,182 — 317,302 Total $ 1,877,389 $ 382,208 $ 409,729 $ 221,481 $ 58,250 $ 173,016 $ (604 ) $ 3,121,469 Geographical Market Asia Pacific $ 1,744,593 $ 364,000 $ 258,521 $ 60,277 $ 6,471 $ 143,969 $ — $ 2,577,831 Americas 77,671 12,999 128,482 64,164 30,186 22,544 (604 ) 335,442 Europe, Middle East and Africa 55,125 5,209 22,726 97,040 21,593 6,503 — 208,196 Total $ 1,877,389 $ 382,208 $ 409,729 $ 221,481 $ 58,250 $ 173,016 $ (604 ) $ 3,121,469 (1) Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.” Contract Balances For the years ended December 31, 2022, 2021 and 2020, Teradyne recognized $112.4 million, $102.5 million and $91.0 million, respectively, that was included within the deferred revenue and customer advances balances at the beginning of the period. This revenue primarily relates to undelivered hardware, extended warranties, training, application support, and post contract support. Each of these represents a distinct performance obligation. As of December 31, 2022, Teradyne ha d

Inventories

Inventories	12 Months Ended
	Dec. 31, 2022
Inventories	F. INVENTORIES Inventories, net consisted of the following at December 31, 2022 and 2021: 2022 2021 (in thousands) Raw material $ 256,065 $ 155,641 Work-in-process 37,982 37,740 Finished goods 30,972 49,949 $ 325,019 $ 243,330 Inventory reserves for the years ended December 31, 2022 and 2021 were $136.8 million and $114.1 million, respectively.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment	G. PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment, net consisted of the following at December 31, 2022 and 2021: 2022 2021 (in thousands) Land $ 18,481 $ 17,207 Buildings 128,991 126,468 Machinery, equipment and software 1,059,880 994,828 Furniture and fixtures 29,929 28,743 Leasehold improvements 64,631 64,110 Construction in progress 22,470 8,105 1,324,382 1,239,461 Less: accumulated depreciation 905,699 852,221 $ 418,683 $ 387,240 Depreciation of property, plant and equipment for the years ended December 31, 2022, 2021, and 2020 was $90.8 million, $91.1 million, and $80.1 million, respectively. As of December 31, 2022 and 2021, the gross book value included in machinery and equipment for internally manufactured test systems being leased by customers was $5.8 million and $13.4 million, respectively. As of December 31, 2022 and 2021, the accumulated depreciation on these test systems was $5.6 million and $8.7 million, respectively.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2022
Financial Instruments	H. FINANCIAL INSTRUMENTS Cash Equivalents Teradyne considers all highly liquid investments with maturities of three months or less at the date of acquisition to be cash equivalents. Marketable Securities Teradyne’s equity and debt mutual funds are classified as Level 1 and available-for-sale debt securities are classified as Level 2. Contingent consideration is classified as Level 3. The vast majority of Level 2 securities are fixed income securities priced by third party pricing vendors. These pricing vendors utilize the most recent observable market information in pricing these securities or, if specific prices are not available, use other observable inputs like market transactions involving identical or comparable securities. During the years ended December 31, 2022 and 2021, there were no transfers in or out of Level 1, Level 2, or Level 3 financial instruments. Realized gains recorded in 2022, 2021, and 2020 were $0.8 million, $3.1 million, and $4.6 million, respectively. Realized losses recorded in 2022 and 2020 were $1.0 million and $0.3 million, respectively. No realized losses were recorded in 2021. Realized gains and losses are included in other (income) expense, net. Unrealized gains on equity securities recorded during the years ended December 31, 2022, 2021 and 2020 we re $1.9 million , million and $9.6 million, respectively. Unrealized losses on equity securities recorded during the years ended December 31, 2022, 2021 and 2020 were $11.6 million , million and $6.0 million, respectively. Unrealized gains and losses on equity securities are included in other (income) expense, net. Unrealized gains and losses on available-for-sale debt securities are included in accumulated other comprehensive income (loss) on the balance sheet. The cost of securities sold is based on average cost. The following table sets forth by fair value hierarchy Teradyne’s financial assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2022 and 2021: December 31, 2022 Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (in thousands) Assets Cash $ 632,417 $ — $ — $ 632,417 Cash equivalents 161,767 60,589 — 222,356 Available for sale securities: Corporate debt securities — 50,856 — 50,856 U.S. Treasury securities — 39,649 — 39,649 Commercial paper — 7,159 — 7,159 Debt mutual funds 6,580 — — 6,580 U.S. government agency securities — 6,352 — 6,352 Certificates of deposit and time deposits — 1,740 — 1,740 Non-U.S. government securities — 535 — 535 Equity securities: Mutual funds 37,518 — — 37,518 Total $ 838,282 $ 166,880 $ — $ 1,005,162 Derivative assets — 86 — 86 Total $ 838,282 $ 166,966 $ — $ 1,005,248 Liabilities Derivative liabilities — 4,215 — 4,215 Total $ — $ 4,215 $ — $ 4,215 Reported as follows: (Level 1) (Level 2) (Level 3) Total (in thousands) Assets Cash and cash equivalents $ 794,184 $ 60,589 $ — $ 854,773 Marketable securities — 39,612 — 39,612 Long-term marketable securities 44,098 66,679 — 110,777 Prepayments — 86 — 86 Total $ 838,282 $ 166,966 $ — $ 1,005,248 Liabilities Other current liabilities $ — $ 4,215 $ — $ 4,215 Total $ — $ 4,215 $ — $ 4,215 December 31, 2021 Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (in thousands) Assets Cash $ 628,740 $ — $ — $ 628,740 Cash equivalents 412,212 81,247 — 493,459 Available for sale securities: Commercial paper — 189,620 — 189,620 U.S. Treasury securities — 77,789 — 77,789 Corporate debt securities — 56,901 — 56,901 Debt mutual funds 7,971 — — 7,971 U.S. government agency securities — 4,610 — 4,610 Certificates of deposit and time deposits — 1,356 — 1,356 Non-U.S. government securities — 589 — 589 Equity securities: Mutual funds 39,253 — — 39,253 Total $ 1,088,176 $ 412,112 $ — $ 1,500,288 Derivative assets — 92 — 92 Total $ 1,088,176 $ 412,204 $ — $ 1,500,380 Liabilities Derivative liabilities — 118 — 118 Total $ — $ 118 $ — $ 118 Reported as follows: (Level 1) (Level 2) (Level 3) Total (in thousands) Assets Cash and cash equivalents $ 1,040,952 $ 81,247 $ — $ 1,122,199 Marketable securities — 244,231 — 244,231 Long-term marketable securities 47,224 86,634 — 133,858 Prepayments — 92 — 92 Total $ 1,088,176 $ 412,204 $ — $ 1,500,380 Liabilities Other current liabilities $ — $ 118 $ — $ 118 Total $ — $ 118 $ — $ 118 Changes in the fair value of Level 3 contingent consideration for the years ended December 31, 2022 and 2021 were as follows: Contingent Consideration (in thousands) Balance at December 31, 2020 $ 7,227 Fair (7,227 ) Balance at December 31, 2021 — Fair value adjustment — Balance at December 31, 2022 $ — (1) During the year ended December 31, 2021, the fair value of contingent consideration for the earn-outs in connection with the acquisition of AutoGuide was reduced to zero, which resulted in a benefit of $7.2 million, primarily due to a decrease in forecasted revenues and earnings before interest and taxes. On March 25, 2022, the arbitration claim filed by Industrial Automation LLC, sellers of AutoGuide, against Teradyne alleging non-compliance with the earn-out provisions of the Membership Interests Purchase Agreement, dated as of October 18, 2019, among Industrial Automation LLC, Teradyne and AutoGuide was settled for $26.7 million. As a result, Teradyne has no remaining earn-out obligations. The carrying amounts and fair values of Teradyne’s financial instruments at December 31, 2022 and 2021 were as follows: December 31, 2022 December 31, 2021 Carrying Value Fair Value Carrying Value Fair Value (in thousands) Assets Cash and cash equivalents $ 854,773 $ 854,773 $ 1,122,199 $ 1,122,199 Marketable securities 150,389 150,389 378,089 378,089 Der ivative ass ets 86 86 92 92 Liabilities Derivat liabil ities 4,215 4,215 118 118 Convertible debt (1) 50,115 139,007 108,426 604,648 (1) The carrying value represents the bifurcated debt component only, while the fair value is based on quoted market prices for the convertible note which includes the equity conversion features. The fair values of accounts receivable, net and accounts payable approximate the carrying amount due to the short-term nature of these instruments. The following tables summarize the composition of available-for-sale marketable securities at December 31, 2022 and 2021: December 31, 2022 Available-for-Sale Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Corporate debt securities $ 57,006 $ 3 $ (6,153 ) $ 50,856 $ 50,667 U.S. Treasury securities 44,030 — (4,381 ) 39,649 39,649 Commercial paper 7,089 70 — 7,159 — Debt mutual funds 6,997 — (417 ) 6,580 3,095 U.S. government agency securities 6,442 — (90 ) 6,352 6,352 Certificates of deposit and time deposits 1,740 — — 1,740 — Non-U.S. government securities 535 — — 535 — $ 123,839 $ 73 $ (11,041 ) $ 112,871 $ 99,763 Reported as follows: Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Marketable securities $ 39,950 $ 70 $ (408 ) $ 39,612 $ 30,713 Long-term marketable securities 83,889 3 (10,633 ) 73,259 69,050 $ 123,839 $ 73 $ (11,041 ) $ 112,871 $ 99,763 December 31, 2021 Available-for-Sale Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Commercial paper $ 189,614 $ 15 $ (9 ) $ 189,620 $ 22,784 U.S. Treasury securities 77,707 551 (470 ) 77,789 46,435 Corporate debt securities 52,266 4,863 (227 ) 56,901 19,422 Debt mutual funds 7,928 43 — 7,971 — U.S. government agency securities 4,617 5 (12 ) 4,610 3,296 Certificates of deposit and time deposits 1,356 — — 1,356 — Non-U.S. government securities 589 — — 589 — $ 334,077 $ 5,477 $ (718 ) $ 338,836 $ 91,937 Reported as follows: Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Marketable securities $ 244,213 $ 64 $ (46 ) $ 244,231 $ 54,798 Long-term marketable securities 89,864 5,413 (672 ) 94,605 37,139 $ 334,077 $ 5,477 $ (718 ) $ 338,836 $ 91,937 As of December 31, 2022, the fair market value of investments with unrealized losses less than one year and greater than one year totaled $66.3 million and $33.4 million, respectively. As of December 31, 2021, the fair market value of investments with unrealized losses less than one year and greater than one year totaled $85.4 million and $6.5 million, respectively. Teradyne reviews its investments to identify and evaluate investments that have an indication of possible impairment. Based on this review, Teradyne determined that the unrealized losses related to these investments at December 31, 2022 and 2021, were not other than temporary. The contractual maturities of investments in available-for-sale marketable securities held at December 31, 2022 were as follows: Cost Fair Value (in thousands) Due within one year $ 39,950 $ 39,612 Due after 1 year through 5 years 33,045 31,466 Due after 5 years through 10 years 4,782 4,232 Due after 10 years 39,065 30,981 Total $ 116,842 $ 106,291 Contractual maturities of investments in available-for-sale marketable securities held at December 31, 2022 exclude debt mutual funds with the fair market value of $6.6 million as they do not have a contractual maturity date. Derivatives Teradyne conducts business in various foreign countries, with certain transactions denominated in local currencies. As a result, Teradyne is exposed to risks relating to changes in foreign currency exchange rates. Teradyne’s foreign currency risk management objective is to minimize the effect of exchange rate fluctuations associated with the remeasurement of monetary assets and liabilities denominated in foreign currencies, and changes in its cash inflows attributable to the forecasted cash flows from certain foreign currency denominated revenues. To minimize the effect of exchange rate fluctuations associated with the remeasurement of monetary assets and liabilities denominated in foreign currencies, Teradyne enters into foreign currency forward contracts. The change in fair value of these derivatives is recorded directly in earnings and is used to offset the change in value of monetary assets and liabilities denominated in foreign currencies. Teradyne also enters into foreign currency forward and option contracts designated as cash flow hedges to hedge the risk of changes in its cash inflows attributable to changes in foreign currency exchange rates. The cash flow hedges have maturities of less than six months and mature in the period of revenue recognition for certain products and services in backlog and forecasted to be recognized in a future period. Teradyne evaluates cash flow hedges for effectiveness at inception based on the critical terms match method. The hedges are not expected to incur any ineffectiveness however a quarterly qualitative assessment of effectiveness is done to determine if the critical terms match method remains appropriate to use. The change in fair value of the contracts is recorded in accumulated other comprehensive income (loss) and reclassified to earnings at maturity date. Teradyne does not use derivative financial instruments for speculative purposes. At December 31, 2022 and 2021, Teradyne had the following contracts to buy and sell non-U.S. currencies for U.S. dollars and other non-U.S. currencies with the following notional amounts: December 31, 2022 December 31, 2021 Buy Position Sell Position Net Total Buy Position Sell Position Net Total (in millions) Japanese Yen $ (37.1 ) $ — $ (37.1 ) $ (31.4 ) $ — $ (31.4 ) Taiwan Dollar (29.2 ) — (29.2 ) (35.1 ) — (35.1 ) Korean Won (6.4 ) — (6.4 ) (4.2 ) — (4.2 ) British Pound Sterling (1.2 ) — (1.2 ) (1.8 ) — (1.8 ) Euro — 38.4 38.4 — 44.9 44.9 Singapore Dollar — 33.5 33.5 — 61.9 61.9 Philippine Peso — 2.7 2.7 — 3.9 3.9 Chinese Yuan — 2.2 2.2 — 2.8 2.8 Total $ (73.9 ) $ 76.8 $ 2.9 $ (72.5 ) $ 113.5 $ 41.0 The fair value of the outstanding contracts was a loss of $0.9 million and $0.1 million, respectively, at December 31, 2022 and 2021. Unrealized gains and losses on foreign currency forward contracts and foreign currency remeasurement gains and losses on monetary assets and liabilities are included in other (income) expense, net. At December 31, 2022 and 2021, Teradyne had the following cash flow hedge contracts to buy and sell non-U.S. currencies for U.S. dollars with the following notional amounts: December 31, 2022 December 31, 2021 Buy Position Sell Position Net Total Buy Position Sell Position Net Total (in millions) Japanese Yen $ (23.4 ) $ 61.2 $ 37.8 $ — $ — $ — Taiwan Dollar (5.5 ) 10.9 5.4 — — — Total $ (28.9 ) $ 72.1 $ 43.2 $ — $ — $ — The fair value of the outstanding cash flow hedge contracts was a loss of $3.2 million at December 31, 2022. Unrealized gains and losses on foreign currency cash flow hedge contracts are included in accumulated other comprehensive income (loss). At maturity the gains or losses associated with cash flow hedge contracts are recorded to revenue. The following table summarizes the fair value of derivative instruments as of December 31, 2022 and 2021: Balance Sheet Location December 31, 2022 December 31, 2021 (in thousands) Derivatives not designated as hedging instruments: Foreign exchange forward contracts Prepayments $ 86 $ 92 Foreign exchange forward contracts Other current liabilities (990 ) (118 ) Derivatives designated as hedging instruments: Foreign exchange option contracts Other current liabilities (3,225 ) — Total derivatives $ (4,129 ) $ (26 ) The following table summarizes the effect of derivative instruments in the statements of operations recognized for the years ended December 31, 2022, 2021, and 2020: Location of (Gains) Losses Recognized in Statement of Operations December 31, 2022 December 31, 2021 December 31, 2020 (in thousands) Derivatives not designated as hedging instruments: Foreign exchange forward contracts Other (income) expense, net $ (2,482 ) $ 6,488 $ 3,515 Derivatives designated as hedging instruments: Foreign exchange option contracts Revenue (251 ) — — Total derivatives $ (2,733 ) $ 6,488 $ 3,515 The table does not reflect the corresponding gains and losses from the remeasurement of the monetary assets and liabilities denominated in foreign currencies. For the years ended December 31, 2022, 2021 and 2020, net losses (gains) from remeasurement of monetary assets and liabilities denominated in foreign currencies were $10.8 million, $(2.1) million, and $2.6 million, respectively. See Note J: “Debt” regarding derivatives related to the convertible senior notes. Concentration of Credit Risk Financial instruments which potentially subject Teradyne to concentrations of credit risk consist principally of cash equivalents, marketable securities, forward currency contracts and accounts receivable. Teradyne’s cash equivalents consist primarily of money market funds invested in U.S. Treasuries and government agencies. Teradyne’s fixed income available-for-sale marketable securities have a minimum rating of AA by one or more of the major credit rating agencies. Teradyne places foreign currency forward contracts with high credit-quality financial institutions in order to minimize credit risk exposure. Concentrations of credit risk with respect to accounts receivable are limited due to the large number of geographically dispersed customers. Teradyne performs ongoing credit evaluations of its customers’ financial condition and from time to time may require customers to provide a letter of credit from a bank to secure accounts receivable. There were no customers who accounted for more than 10% of our accounts receivable balance as of December 31, 2022 and 2021 .

Leases

Leases	12 Months Ended
	Dec. 31, 2022
Leases, Operating [Abstract]
Leases	I. LEASES Teradyne has facility and auto leases, which are accounted for as operating leases. Teradyne’s facility leases are primarily used for administrative functions, research and development, manufacturing, and storage and distribution. Remaining lease terms range from less than one year to twelve years. For the year ended December 31, 2022, 2021 and 2020, total lease expense was $40.1 million, $39.2 million, and $38.5 million respectively, and included $14.1 million, $12.6 million, and $12.1 million, respectively, of variable lease costs and $2.0 million, $1.8 million, and $3.4 million, respectively, of costs related to short-term leases, which are not recorded on the consolidated balance sheets. At December 31, 2022, the weighted average remaining lease term and weighted average discount rate for operating leases was 5.9 years and 4.7%, respectively. At December 31, 2021, the weighted average remaining lease term and weighted average discount rate for operating leases was 5.3 years and 4.1%, respectively. Supplemental cash flows information related to leases was as follows: For the Years Ended December 31, December 31, December 31, (in thousands) Cash paid for amounts included in the measurement of lease liabilities included in operating cash flows: $ 20,775 $ 24,593 $ 24,136 Right-of-use assets obtained in exchange for new lease obligations 26,149 34,246 14,801 Maturities of lease liabilities as of December 31, 2022 were as follows: Operating Lease (in thousands) 2023 $ 20,120 2024 18,239 2025 15,308 2026 10,635 2027 8,117 Thereafter 17,963 Total lease payments 90,382 Less imputed interest (7,612 ) Total lease liabilities $ 82,770

Debt

Debt	12 Months Ended
	Dec. 31, 2022
Debt	J. DEBT Convertible Senior Notes On December 12, 2016, Teradyne completed a private offering of $460.0 million aggregate principal amount of 1.25% convertible senior unsecured notes (the “Notes”) due December 15, 2023 and received net proceeds, after issuance costs, of approximately $450.8 million, $33.0 million of which was used to pay the net cost of the convertible note hedge transactions and $50.1 million of which was used to repurchase 2.0 million shares of Teradyne’s common stock under its existing stock repurchase program from purchasers of the Notes in privately negotiated transactions effected through one of the initial purchasers or its affiliates conducted concurrently with the pricing of the Note offering. The Notes will mature on December 15, 2023, unless earlier repurchased or converted. The Notes bear interest at a rate of 1.25% per year payable semiannually in arrears on June 15 and December 15 of each year. The Notes will be convertible at the option of the noteholders at any time prior to the close of business on the business day immediately preceding September 15, 2023, only under the following circumstances: (1) during any calendar quarter beginning after March 31, 2017 (and only during such calendar quarter), if the closing sale price of Teradyne’s common stock, for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately During 2022, forty - During 2021, sixty - As of February 22, 2023, one hundred and twenty - Concurrent with the offering of the Notes, Teradyne entered into convertible note hedge transactions (the “Note Hedge Transactions”) with the initial purchasers or their affiliates (the “Option Counterparties”). The Note Hedge Transactions cover, subject to customary anti-dilution adjustments, the number of shares of the common stock that underlie the Notes, with a strike price equal to the conversion price of the Notes of $31.46. The Note Hedge Transactions cover, subject to customary anti-dilution adjustments, approximately 1.6 million shares of Teradyne’s common stock. Separately and concurrent with the pricing of the Notes, Teradyne entered into warrant transactions with the Option Counterparties (the “Warrant Transactions”) in which it sold net-share-settled (or, at its election subject to certain conditions, cash-settled) warrants to the Option Counterparties. The Warrant Transactions cover, subject to customary anti-dilution adjustments, approximately 14.6 million shares of common stock. As of December 31, 2022, the strike price of the warrants was approximately $39.48 per share. The strike price is subject to adjustment under certain circumstances. The Warrant Transactions could have a dilutive effect to Teradyne’s common stock to the extent that the market price per share of Teradyne’s common stock, as measured under the terms of the Warrant Transactions, exceeds the applicable strike price of the warrants. The Note Hedge Transactions are expected to reduce the potential dilution to Teradyne’s common stock upon any conversion of the Notes. However, the Warrant Transactions could separately have a dilutive effect to the extent that the market value per share of Teradyne’s common stock exceeds the applicable strike price of the warrant. The net cost of the Note Hedge Transactions, after being partially offset by the proceeds from the sale of the warrants, was approximately $33.0 million. In connection with establishing their initial hedge of these convertible note hedge and warrant transactions, the Option Counterparties have entered into various derivative transactions with respect to Teradyne’s common stock and/or purchased shares of Teradyne’s common stock or other securities, including the Notes, concurrent with, or shortly after, the pricing of the Notes. In addition, the Option Counterparties may modify their hedge positions by entering into or unwinding various derivative transactions with respect to Teradyne’s common stock or by selling Teradyne’s common stock or other securities, including the Notes, in secondary market transactions (and may do so during any observation period related to the conversion of the Notes). These activities could adversely affect the value of Teradyne’s common stock and the Notes. Originally, Teradyne allocated $100.8 million of the $460.0 million principal amount of the Notes to the equity component, which represented a discount to the debt and was amortized to interest expense using the effective interest method through December 2023. Effective January 1, 2022, Teradyne adopted ASC 2020-06 using the modified retrospective method of transition and accounts for the debt as a single liability measured at its amortized cost. As a result of the adoption, Teradyne recorded an increase of $1.4 million to current debt for unsettled shares, an increase of $1.8 million to deferred tax assets, an increase of $6.6 million to long-term debt for unamortized debt discount, and an increase to retained earnings of $94.6 million for the reclassification of the equity component. Mezzanine equity representing unsettled shares value was reduced to zero and additional paid-in capital was reduced by $100.8 million. Debt issuance fees of approximately $0.1 million at December 31, 2022, are being amortized to interest expense using the effective interest method over the seven-year term of the Notes. The below tables represent the key components of Teradyne’s convertible senior notes: December 31, December 31, (in thousands) Debt principal $ 50,228 $ 116,980 Unamortized debt issuance fees (1) 113 8,554 Net carrying amount of convertible debt $ 50,115 $ 108,426 Reported as follows: December 31, December 31, (in thousands) Current debt $ 50,115 $ 19,182 Long-term debt — 89,244 Net carrying amount of convertible debt $ 50,115 $ 108,426 For the Years Ended December 31, December 31, (in thousands) Contractual interest expense on the coupon $ 732 $ 3,009 Amortization of the issuance fees recognized as interest expense (2) 209 11,019 Total interest expense on the convertible debt $ 941 $ 14,028 (1) Unamortized debt issuance fees as of December 31, 2021 include unamortized debt discount of $8.0 million, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022. (2) For the year ended December 31, 2021 includes the amortization of debt discount component, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022. As of December 31, 2022, the conversion price was approximately $31.46 per share and if converted the value of the notes was $139.5 million. Additional conversions of approximately $15.1 million of debt principal will occur in the first quarter of 2023 and the liability is included in current debt. Teradyne expects to make principal interest payments of $0.4 million in the next 12 months. Revolving Credit Facility On May 1, 2020, Teradyne entered into a credit agreement (the “Credit Agreement”) with Truist Bank, as administrative agent and collateral agent, and the lenders party thereto. The Credit Agreement provides for a three-year, senior secured revolving credit facility of $400.0 million (the “Credit Facility”). On December 10, 2021, the Credit Agreement was amended to extend maturity date of the Credit Facility to December 10, 2026. On October 5, 2022, the Credit Agreement was amended to increase the amount of the Credit Facility to $750.0 million from $400.0 million. The Credit Agreement provides that, subject to customary conditions, Teradyne may seek to obtain from existing or new lenders the available incremental amount under the Credit Facility, not to exceed the greater of $200.0 million or 15% of consolidated EBIDTA. The interest rate applicable to loans under the Credit Facility are, at Teradyne’s option, equal to either a base rate plus a margin ranging from 0.00% to 0.75% per annum or SOFR plus a margin ranging from 1.10% to 1.85% per annum, based on the consolidated leverage ratio of Teradyne. In addition, Teradyne will pay a commitment fee on the unused portion of the commitments under the Credit Facility ranging from 0.15% to 0.25% per annum, based on the then applicable consolidated leverage ratio. Teradyne is not required to repay any loans under the Credit Facility prior to maturity, subject to certain customary exceptions. Teradyne is permitted to prepay all or any portion of the loans under the Credit Facility prior to maturity without premium or penalty, other than customary SOFR breakage costs. The Credit Agreement contains customary events of default, representations, warranties and affirmative and negative covenants that, among other things, limit Teradyne’s ability to sell assets, grant liens on assets, incur other secured indebtedness and make certain investments and restricted payments, all subject to exceptions set forth in the Credit Agreement. The Credit Agreement also requires Teradyne to satisfy two financial ratios measured as of the end of each fiscal quarter; a consolidated leverage ratio and an interest coverage ratio. The Credit Facility is guaranteed by certain of Teradyne’s domestic subsidiaries and collateralized by assets of Teradyne and such subsidiaries, including a pledge of 65% of the capital stock of certain foreign subsidiaries. As of February 22, 2023, the Credit Agreement was undrawn and Teradyne was in compliance with all covenants under the Credit Agreement.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss)	K. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Changes in accumulated other comprehensive income (loss), which is presented net of tax, consist of the following: Foreign Currency Translation Adjustment Unrealized Gains Marketable Securities Unrealized Losses on Cash Flow Retirement Plans Prior Service Credit Total (in thousands) Balance at December 31, 2020, net of tax of $0, $1,910, $0, $(1,126), respectively $ 25,389 $ 6,954 $ — $ 1,173 $ 33,516 Other comprehensive loss before reclassifications, net of tax of $0, $(578), $0, $0, respectively (36,207 ) (2,255 ) — — (38,462 ) Amounts reclassified from accumulated other comprehensive income, net of tax of $0, $(277), $0, $(2), respectively — (995 ) — (7 ) (1,002 ) Net current period other comprehensive loss, net of tax of $0, $(855), $0, $(2), respectively (36,207 ) (3,250 ) — (7 ) (39,464 ) Balance at December 31, 2021, net of tax of $0, $1,055, $0, $(1,128), respectively $ (10,818 ) $ 3,704 $ — $ 1,166 $ (5,948 ) Other comprehensive loss before reclassifications, net of tax of $0, $(3,388), $(708), $0, respectively (29,031 ) (12,666 ) (2,517 ) — (44,214 ) Amounts reclassified from accumulated other comprehensive income (loss), — 301 — (7 ) 294 Net current period other comprehensive loss, net of tax of $0, $(3,363), $(708), $(2), respectively (29,031 ) (12,365 ) (2,517 ) (7 ) (43,920 ) Balance at December 31, 2022, net of tax of $0, $(2,308), $(708), $(1,130), respectively $ (39,849 ) $ (8,661 ) $ (2,517 ) $ 1,159 $ (49,868 ) Reclassifications out of accumulated other comprehensive income (loss) to the statements of operations for the years ended December 31, 2022, 2021, and 2020, were as follows: Details about Accumulated Other Comprehensive Income (Loss) Components For the year s Affected Line Item in the Statements of Operations December 31, 2022 December 31, 2021 December 31, 2020 (in thousands) Available-for-sale marketable securities Unrealized (losses) gains, net of tax of $(25), $277, $665, respectively $ (301 ) $ 995 $ 2,365 Other (income) Defined benefit pension and postretirement plans: Amortization of prior service benefit, net of tax of $2, $2, $2, respectively 7 7 7 (a ) Total reclassifications, net of tax of $(23), $279, $667, respectively $ (294 ) $ 1,002 $ 2,372 Net income (a) The amortization of prior service credit is included in the computation of net periodic pension cost and postretirement benefit; see Note P: “Retirement Plans.”

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets	L. GOODWILL AND INTANGIBLE ASSETS Goodwill Teradyne performs its annual goodwill impairment test as required under the provisions of ASC 350-10, “ Intangibles—Goodwill and Other, Teradyne has the option to perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If Teradyne determines this is the case, Teradyne is required to perform a quantitative goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized. If Teradyne determines that it is more likely than not that the fair value of the reporting unit is greater than its carrying amounts, the quantitative goodwill impairment test is not required. In performing the quantitative goodwill impairment test, Teradyne determines the fair value of a reporting unit using the results derived from an income approach and a market approach, weighting the fair value determined under each approach to determine an estimated fair value for a reporting unit. The income approach is estimated through the discounted cash flows (“DCF”) analysis. Determining fair value requires the exercise of significant judgment, including judgments about appropriate discount rates, perpetual growth rates, and the amount and timing of expected future cash flows. Discount rates are based on a weighted average cost of capital (“WACC”), which represents the average rate a business must pay its providers of debt and equity, plus a risk premium. The WACC used to test goodwill is derived from a group of comparable companies. The cash flows employed in the DCF analysis are derived from internal forecasts and external market forecasts. The market approach estimates the fair value of the reporting unit by utilizing the market comparable method which is based on revenue and earnings multiples from comparable companies. If the estimated fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not impaired. If the carrying amount of a reporting unit exceeds its estimated fair value, then the goodwill is written down by the amount that carrying value exceeds the fair value of the reporting unit, but not below zero. On September 15, 2020, Teradyne announced the appointment of Gregory Smith as President of Teradyne’s Robotics reportable segment effective October 1, 2020. With the appointment of Gregory Smith, the Robotics reportable segment, which includes UR and MiR , In the fourth quarter of 2022, Teradyne performed the annual goodwill impairment test, completing a quantitative assessment for the Robotics reporting unit and a qualitative assessment for the Wireless Test and System Test reporting units . There was impairment as a result of the annual test performed in the fourth quarter of 2022. Key assumptions in the goodwill valuation model are forecasted revenues, discount rate, earnings before interest and taxes, and revenue multiples from comparable companies. A change in any of these key assumptions could result in the reporting unit being impaired in a future period. In the fourth quarter of 2021, Teradyne performed the annual goodwill impairment test, completing a quantitative assessment for the Wireless Test, and System Test reporting units and qualitative assessment for the Robotics reporting unit. There was no impairment as a result of the annual test performed in the fourth quarter of 2021. Key assumptions in the goodwill valuation model are forecasted revenues, discount rate, earnings before interest and taxes, and revenue multiples from comparable companies. A change in any of these key assumptions could result in the reporting unit being impaired in a future period. The changes in the carrying amount of goodwill by reportable segments for the years ended December 31, 2022 and 2021 are as follows: Robotics Wireless Test Semiconductor Test System Test Total (in thousands) Balance at December 31, 2020: Goodwill $ 433,752 $ 361,819 $ 262,155 $ 158,699 $ 1,216,425 Accumulated impairment losses — (353,843 ) (260,540 ) (148,183 ) (762,566 ) 433,752 7,976 1,615 10,516 453,859 Foreign currency translation adjustment (27,781 ) — (54 ) — (27,835 ) Balance at December 31, 2021: Goodwill 405,971 361,819 262,101 158,699 1,188,590 Accumulated impairment losses — (353,843 ) (260,540 ) (148,183 ) (762,566 ) 405,971 7,976 1,561 10,516 426,024 Foreign currency translation adjustment (22,805 ) — (24 ) — (22,829 ) Balance at December 31, 2022: Goodwill 383,166 361,819 262,077 158,699 1,165,761 Accumulated impairment losses — (353,843 ) (260,540 ) (148,183 ) (762,566 ) $ 383,166 $ 7,976 $ 1,537 $ 10,516 $ 403,195 Intangible Assets Teradyne reviews long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable or that the useful lives of these assets are no longer appropriate. There were no events or circumstances indicating that the carrying value of intangible and long-lived assets may not be recoverable in 2022, 2021 and 2020. Amortizable intangible assets consist of the following and are included in intangible assets, net on the balance sheets: December 31, 2022 Gross Carrying Amount (1) Accumulated Amortization (1) Foreign Net Carrying Amount (in thousands) Developed technology $ 270,967 $ (234,208 ) $ (5,935 ) $ 30,824 Customer relationships 57,739 (51,186 ) 172 6,725 Tradenames and trademarks 59,387 (41,930 ) (1,528 ) 15,929 Total intangible assets $ 388,093 $ (327,324 ) $ (7,291 ) $ 53,478 December 31, 2021 Gross Carrying Amount Accumulated Amortization Foreign Currency Net Carrying Amount (in thousands) Developed technology $ 272,547 $ (223,413 ) $ (4,093 ) $ 45,041 Customer relationships 57,739 (48,921 ) 209 9,027 Tradenames and trademarks 59,387 (37,237 ) (583 ) 21,567 Total intangible assets $ 389,673 $ (309,571 ) $ (4,467 ) $ 75,635 (1) In 2022, $1.6 million of amortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization. Aggregate intangible assets amortization expense for the years ended December 31, 2022, 2021, and 2020, was $19.3 million, $21.5 million, and $30.8 million, respectively. Estimated intangible assets amortization expense for each of the five succeeding fiscal years is as follows: Year Amortization Expense (in thousands) 2023 $ 18,835 2024 18,527 2025 11,230 2026 2,350 2027 1,134 Thereafter 1,402

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies	M. COMMITMENTS AND CONTINGENCIES Purchase Commitments As of December 31, 2022, Teradyne had entered into non-cancelable purchase commitments for certain components and materials. The purchase commitments covered by the agreements aggregate to approximately $654.8 million, of which $570.3 million is for less than one year. Legal Claims Teradyne is subject to various legal proceedings and claims which have arisen in the ordinary course of business such as, but not limited to, patent, employment, commercial and environmental matters. Teradyne believes that it has meritorious defenses against all pending claims and intends to vigorously contest them. While it is not possible to predict or determine the outcomes of any pending claims or to provide possible ranges of losses that may arise, Teradyne believes the potential losses associated with all of these actions are unlikely to have a material adverse effect on its business, financial position or results of operations. On March 8, 2021, Industrial Automation LLC, sellers of AutoGuide, submitted a demand for arbitration against Teradyne and AutoGuide in Wilmington, Delaware alleging that Teradyne and AutoGuide breached certain provisions of the Membership Interests Purchase Agreement (the “Purchase Agreement”), dated as of October 18, 2019, among Industrial Automation LLC, Teradyne and AutoGuide. The arbitration demand sought full acceleration of the maximum earn-out amount payable under the Purchase Agreement, or $106.9 million, for the alleged breach of the earn-out provisions of the Purchase Agreement. On March 25, 2022, the arbitration claim was settled for $26.7 million. As a result, Teradyne has no remaining earn-out obligations. Guarantees and Indemnification Obligations Teradyne provides indemnification, to the extent permitted by law, to its officers, directors, employees and agents for liabilities arising from certain events or occurrences, while the officer, director, employee, or agent, is or was serving, at Teradyne’s request in such capacity. Teradyne may enter into indemnification agreements with certain of its officers and directors. With respect to acquisitions, Teradyne provides indemnifications to or assumes indemnification obligations for the current and former directors, officers and employees of the acquired companies in accordance with the acquired companies’ by-laws and charter. As a matter of practice, Teradyne has maintained directors’ and officers’ liability insurance coverage including coverage for directors and officers of acquired companies. Teradyne enters into agreements in the ordinary course of business with customers, resellers, distributors, integrators and suppliers. Most of these agreements require Teradyne to defend and/or indemnify the other party against intellectual property infringement claims brought by a third party with respect to Teradyne’s products. From time to time, Teradyne also indemnifies customers and business partners for damages, losses and liabilities they may suffer or incur relating to personal injury, personal property damage, product liability, breach of confidentiality obligations and environmental claims relating to the use of Teradyne’s products and services or resulting from the acts or omissions of Teradyne, its employees, authorized agents or subcontractors. On occasion, Teradyne has also provided guarantees to customers regarding the delivery and performance of its products in addition to the warranty described below. As a matter of ordinary course of business, Teradyne warrants that its products will substantially perform in accordance with its standard published specifications in effect at the time of delivery. Most warranties have a one-year duration commencing from installation. A provision is recorded upon revenue recognition to cost of revenues for estimated warranty expense based upon historical experience. When Teradyne receives revenue for extended warranties beyond the standard duration, the revenue is deferred and recognized on a straight-line basis over the contract period. Related costs are expensed as incurred. As of December 31, 2022, and 2021, Teradyne had a product warranty accrual of $14.2 million and $24.6 million, respectively, included in other accrued liabilities, and revenue deferrals related to extended warranties of $56.2 million and $64.2 million, respectively, included in short and long-term deferred revenue and customer advances. In addition, in the ordinary course of business, Teradyne provides minimum purchase guarantees to certain vendors to ensure continuity of supply against the market demand. Although some of these guarantees provide penalties for cancellations and/or modifications to the purchase commitments as the market demand decreases, most of the guarantees do not. Therefore, as the market demand decreases, Teradyne re-evaluates these guarantees and determines what charges, if any, should be recorded. With respect to its agreements covering product, business or entity divestitures and acquisitions, Teradyne provides certain representations, warranties and covenants to purchasers and agrees to indemnify and hold such purchasers harmless against breaches of such representations, warranties and covenants. Many of the indemnification claims have a definite expiration date while some remain in force indefinitely. With respect to its acquisitions, Teradyne may, from time to time, assume the liability for certain events or occurrences that took place prior to the date of acquisition. As a matter of ordinary course of business, Teradyne occasionally guarantees certain indebtedness obligations of its subsidiary companies, limited to the borrowings from financial institutions, purchase commitments to certain vendors, and lease commitments to landlords. Based on historical experience and information known as of December 31, 2022, and 2021, except for product warranty, Teradyne has not recorded any liabilities for these guarantees and obligations because the amount would be immaterial.

Net Income Per Common Share

Net Income Per Common Share	12 Months Ended
	Dec. 31, 2022
Net Income per Common Share	N. NET INCOME PER COMMON SHARE The following table sets forth the computation of basic and diluted net income per common share: 2022 2021 2020 (in thousands, except per share amounts) Net income for basic and diluted net income per share $ 715,501 $ 1,014,589 $ 784,147 Weighted average common shares-basic 158,434 164,960 166,120 Effect of dilutive potential common shares: Convertible note hedge warrant shares (1) 8,806 9,956 6,989 Incremental shares from assumed conversion of convertible notes (2) 1,763 7,435 8,528 Restricted stock units 657 1,180 1,264 Stock options 52 86 131 Employee stock purchase rights 22 8 10 Dilutive potential common shares 11,300 18,665 16,922 Weighted average common shares-diluted 169,734 183,625 183,042 Net income per common share-basic $ 4.52 $ 6.15 $ 4.72 Net income per common share-diluted $ 4.22 $ 5.53 $ 4.28 (1) Convertible notes hedge warrant shares were calculated using the difference between the average Teradyne stock price for the period and the warrant price, multiplied by the number of warrant shares. The result of this calculation, representing the total intrinsic value of the warrant, was divided by the average Teradyne stock price for the period. (2) Incremental shares from the assumed conversion of the convertible notes was calculated using the difference between the average Teradyne stock price for the period and the conversion price, multiplied by the number of convertible notes shares. The result of this calculation, representing the total intrinsic value of the convertible debt, was divided by the average Teradyne stock price for the period. The computation of diluted net income per common share for 2022 excludes the effect of the potential exercise of stock options to purchase approximately 0.1 million shares and restricted stock units to purchase approximately 0.4 million shares because the effect would have been anti-dilutive. The computation of diluted net income per common share for 2021 excludes the effect of the potential exercise of stock options to purchase approximately 0.1 million shares and restricted stock units to purchase approximately 0.1 million shares because the effect would have been anti-dilutive.

Restructuring and Other

Restructuring and Other	12 Months Ended
	Dec. 31, 2022
Restructuring and Related Activities [Abstract]
Restructuring and Other	O. RESTRUCTURING AND OTHER During the year ended December 31, 2022, Teradyne recorded a charge of $14.7 million related to the arbitration claim filed against Teradyne and AutoGuide related to an earn-out dispute, which was settled on March 25, 2022 for $26.7 million, $2.9 million of severance charges primarily in Robotics, and a charge of $2.7 million for an increase in environmental and legal liabilities, partially offset by a $3.4 million gain on sale of asset. During the year ended December 31, 2021, Teradyne recorded a charge of $12.0 million related to the arbitration claim filed against Teradyne and AutoGuide related to an earn-out dispute, $1.5 million of severance charges primarily in Robotics, $0.5 million of acquisition related compensation and expenses and $2.5 million for other expenses, offset by a $7.2 million gain for the decrease in the fair value of the AutoGuide contingent consideration liability. During the year ended December 31, 2020, Teradyne recorded a $19.7 million gain for the decrease in the fair value of the AutoGuide contingent consideration liability, and a $3.5 million gain for the decrease in the fair value of the MiR contingent consideration liability, partially offset by a charge of $4.0 million for contract termination settlement, $2.5 million of acquisition related compensation and expenses, $2.3 million of severance charges primarily in Robotics, and $1.2 million of other expenses.

Retirement Plans

Retirement Plans	12 Months Ended
	Dec. 31, 2022
Retirement Plans	P. RETIREMENT PLANS ASC 715 , Compensation—Retirement Benefits, Defined Benefit Pension Plans Teradyne has defined benefit pension plans covering a portion of domestic employees and employees of certain non-U.S. subsidiaries. Benefits under these plans are based on employees’ years of service and compensation. Teradyne’s funding policy is to make contributions to the plans in accordance with local laws and to the extent that such contributions are tax deductible. The assets of these plans consist primarily of fixed income and equity securities. In addition, Teradyne has an unfunded supplemental executive defined benefit plan in the United States to provide retirement benefits in excess of levels allowed by the Employment Retirement Income Security Act (“ERISA”) and the Internal Revenue Code (the “IRC”), as well as unfunded qualified foreign plans. In 2022, Teradyne’s projected benefit obligations decreased primarily due to actuarial gains of approximately $59.1 million across all pension plans from increases in discount rates, and approximately $3.1 million gain from foreign exchange effects for foreign plans. In 2021, Teradyne’s projected benefit obligations decreased primarily due to actuarial gains of approximately $8.7 million across all pension plans from increases in discount rates, and approximately $3.3 million gain from foreign exchange effects for foreign plans. The December 31 balances of these defined benefit pension plans assets and obligations are shown below: 2022 2021 United States Foreign United States Foreign (in thousands) Assets and Obligations Change in benefit obligation: Projected benefit obligation: Beginning of year $ 192,472 $ 45,774 $ 202,233 $ 50,988 Service cost 1,588 784 1,784 941 Interest cost 4,886 482 4,427 337 Actuarial (gain) loss (45,932 ) (13,181 ) (6,432 ) (2,257 ) Benefits paid (9,200 ) (863 ) (9,337 ) (925 ) Liability (gain) loss due to settlement — — (204 ) — Non-U.S. currency movement — (3,061 ) — (3,310 ) End of year 143,814 29,935 192,472 45,774 Change in plan assets: Fair value of plan assets: Beginning of year 149,578 2,017 158,855 1,856 Actual return on plan assets (31,835 ) 153 (3,217 ) 33 Company contributions 3,217 949 3,276 1,022 Benefits paid (9,200 ) (863 ) (9,337 ) (925 ) Non-U.S. currency movement — (169 ) — 31 End of year 111,760 2,087 149,578 2,017 Funded status $ (32,054 ) $ (27,848 ) $ (42,894 ) $ (43,757 ) The following table provides amounts recorded within the account line items of the statements of financial position as of December 31: 2022 2021 United States Foreign United States Foreign (in thousands) Retirement plans assets $ 11,761 $ — $ 15,110 $ — Accrued employees’ compensation and withholdings (3,055 ) (1,191 ) (3,288 ) (936 ) Retirement plans liabilities (40,760 ) (26,657 ) (54,716 ) (42,821 ) Funded status $ (32,054 ) $ (27,848 ) $ (42,894 ) $ (43,757 ) The accumulated benefit obligation for the United States defined benefit pension plans was $140.6 million and $187.5 million at December 31, 2022 and 2021, respectively. The accumulated benefit obligation for foreign defined benefit pension plans was $28.6 million and $42.5 million at December 31, 2022 and 2021, respectively. Information for pension plans with an accumulated benefit obligation in excess of plan assets as of December 31: 2022 2021 United Foreign United Foreign (in millions) Projected benefit obligation $ 43.8 $ 29.9 $ 58.0 $ 45.8 Accumulated benefit obligation 42.3 28.6 55.7 42.5 Fair value of plan assets — 2.1 — 2.0 Expense For the years ended December 31, 2022, 2021, and 2020, Teradyne’s net periodic pension (income) cost was comprised of the following: 2022 2021 2020 United States Foreign United States Foreign United States Foreign (in thousands) Components of Net Periodic Pension (Income) Cost: Service cost $ 1,588 $ 784 $ 1,784 $ 941 $ 1,773 $ 907 Interest cost 4,886 482 4,427 337 5,770 516 Expected (2,927 ) (75 ) (3,858 ) (67 ) (4,840 ) (65 ) Net actuarial(gain) loss (11,170 ) (13,259 ) 643 (2,223 ) 6,463 2,949 Settlement (gain) loss — — (204 ) — 451 — Total net periodic pension (income) cost $ (7,623 ) $ (12,068 ) $ 2,792 $ (1,012 ) $ 9,617 $ 4,307 Weighted Average Assumptions to Determine Net Periodic Pension Cost at January 1: 2022 2021 2020 United States Foreign United States Foreign United States Foreign Discount rate 2.5 % 1.1 % 2.2 % 0.7 % 2.8 % 1.1 % Expected return on plan assets 2.0 4.0 2.4 3.5 3.0 3.8 Salary progression rate 2.4 2.2 2.4 2.3 2.6 2.5 Weighted Average Assumptions to Determine Pension Obligations at December 31: 2022 2021 United Foreign United Foreign Discount rate 4.9 % 3.5 % 2.6 % 1.1 % Salary progression rate 2.5 2.1 2.4 2.2 In developing the expected return on plan assets assumption, Teradyne evaluates input from its investment manager and pension consultants, including their forecast of asset class return expectations. Teradyne believes that 2.0% was an appropriate rate to use for fiscal year 2022 for the U.S. Qualified Pension Plan (“U.S. Plan”). Teradyne recognizes net actuarial gains and losses and the change in the fair value of the plan assets in its operating results in the year in which they occur or upon any interim remeasurement of the plans. Teradyne calculates the expected return on plan assets using the fair value of the plan assets. Actuarial gains and losses are generally measured annually as of December 31 and, accordingly, recorded during the fourth quarter of each year or upon any interim remeasurement of the plans. The discount rate utilized to determine future pension obligations for the U.S. Plan is based on FTSE Pension Index adjusted for the plan’s expected cash flows and was 4.9% at December 31, 2022, up from 2.6% at December 31, 2021. Plan Assets As of December 31, 2022, the fair value of Teradyne’s pension plans’ assets totaled $113.8 million, of which $111.8 million was related to the U.S. Plan and $2.1 million was related to the Taiwan defined benefit pension plan. Substantially all of Teradyne’s pension plans’ assets are held in individual trusts, which were established for the investment of assets of Teradyne’s sponsored retirement plans. The following table provides weighted average pension asset allocation by asset category at December 31, 2022 and 2021: 2022 2021 United Foreign United Foreign Fixed income securities 94.0 % — % 94.0 % — % Equity securities 5.0 — 5.0 — Other 1.0 100.0 1.0 100.0 100.0 % 100.0 % 100.0 % 100.0 % The assets of the U.S. Plan are overseen by the Teradyne Fiduciary Committee which is comprised of members of senior management drawn from appropriate diversified levels of the management team. The Fiduciary Committee is responsible for setting the policy that provides the framework for management of the U.S. Plan assets. In accordance with its responsibilities, the Fiduciary Committee meets on a regular basis to review the performance of the U.S. Plan assets and compliance with the investment policy. The policy sets forth an investment structure for managing U.S. Plan assets, including setting the asset allocation ranges, which are expected to provide an appropriate level of overall diversification required to maximize the long-term return on plan assets for a prudent and reasonable level of risk given prevailing market conditions, total investment return over the long term, and preservation of capital, while maintaining sufficient liquidity to pay the benefits of the U.S. Plan. The investment portfolio will not, at any time, have a direct investment in Teradyne stock. It may have indirect investment in Teradyne stock, if one of the funds selected by the investment manager invests in Teradyne stock. In developing the asset allocation ranges, third party asset allocation studies are periodically performed that consider the current and expected positions of the plan assets and funded status. Based on this study and other appropriate information, the Fiduciary Committee establishes asset allocation ranges taking into account acceptable risk targets and associated returns. The investment return objectives are to avoid excessive volatility and produce a rate of return that at least matches the Policy Index identified below. The manager’s investment performance is reviewed at least annually. Results for the total portfolio and for each major category of assets are evaluated in comparison with appropriate market indices and the Policy Index. The target asset allocation and the index for each asset category for the U.S. Plan, per the investment policy, are as follows: Asset Category: Policy Index: Target Allocation U.S. corporate fixed income Bloomberg Barclays U.S. Corporate A or Better Index 75 % U.S. government fixed income Bloomberg Barclays U.S. Long Government Bond Index 14 Global equity MSCI World Minimum Volatility Index 5 High yield fixed income Bloomberg Barclays U.S. Corporate High Yield Index 5 Cash Citigroup Three Month U.S. Treasury Bill 1 Teradyne’s U.S. Plan invests primarily in common trust funds. Units held in the common trust funds are valued at the unit price as reported by the investment manager based on the asset value of the underlying investments; underlying investments in equity securities are valued at the last reported sales price, and underlying investments in fixed-income securities are generally valued using methods based upon market transactions for comparable securities. During the years ended December 31, 2022 and December 31, 2021, there were no transfers of pension assets in or out of Level 1, Level 2, and Level 3. The fair value of pension plan assets by asset category and by level at December 31, 20 2 1 December 31, 2022 United States Foreign Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in thousands) Fixed income securities: Corporate debt securities $ — $ 89,403 $ — $ 89,403 $ — $ — $ — $ — U.S. government securities — 15,631 — 15,631 — — — — Global equity — 5,579 — 5,579 — — — — Other — — — — — 2,087 — 2,087 Cash and cash equivalents 1,147 — — 1,147 — — — — Total $ 1,147 $ 110,613 $ — $ 111,760 $ — $ 2,087 $ — $ 2,087 December 31, 2021 United States Foreign Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in thousands) Fixed income securities: Corporate debt securities $ — $ 119,805 $ — $ 119,805 $ — $ — $ — $ — U.S. government securities — 20,847 — 20,847 — — — — Global equity — 7,426 — 7,426 — — — — Other — — — — — 2,017 — 2,017 Cash and cash equivalents 1,500 — — 1,500 — — — — Total $ 1,500 $ 148,078 $ — $ 149,578 $ — $ 2,017 $ — $ 2,017 Contributions Teradyne’s funding policy is to make contributions to the plans in accordance with local laws and to the extent that such contributions are tax deductible. During 2022, Teradyne contributed $3.2 million to the U.S. supplemental executive defined benefit pension plan and $0.9 million to certain qualified plans for non-U.S. subsidiaries. During 2021, Teradyne contributed $3.3 million to the U.S. supplemental executive defined benefit pension plan and $1.0 million to certain qualified plans for non-U.S. subsidiaries. In 2023, contributions to the U.S. supplemental executive defined benefit pension plan and certain qualified plans from non-U.S. subsidiaries will be approximately $3.1 million and $1.3 million, respectively. Contributions to the U.S. supplemental executive defined benefit pension plan and certain non-U.S. subsidiaries qualified plans will be approximately $6.4 million and $2.1 million, respectively, in 1 to 3 years, $7.1 million and $2.3 million, respectively, in 3 to 5 years and $17.4 million and $7.0 million, respectively, thereafter. Expected Future Pension Benefit Payments Future benefit payments are expected to be paid as follows: United States Foreign (in thousands) 2023 $ 10,323 $ 1,239 2024 9,274 1,055 2025 9,912 1,014 2026 9,971 1,130 2027 10,742 1,239 2028-2031 52,877 8,216 Postretirement Benefit Plans In addition to receiving pension benefits, U.S. Teradyne employees who meet early retirement eligibility requirements as of their termination dates may participate in Teradyne’s Welfare Plan, which includes medical and dental benefits up to age 65. Death benefits provide a fixed sum to retirees’ survivors and are available to all retirees. Substantially all of Teradyne’s current U.S. employees could become eligible for these benefits, and the existing benefit obligation relates primarily to those employees. The December 31 balances of the postretirement assets and obligations are shown below: 2022 2021 (in thousands) Assets and Obligations Change in benefit obligation: Projected benefit obligation: Beginning of year $ 7,210 $ 8,515 Service cost 64 64 Interest cost 177 170 Actuarial gain (1,155 ) (433 ) Benefits paid (950 ) (1,107 ) End of year 5,345 7,210 Change in plan assets: Fair value of plan assets: Beginning of year — — Company contributions 950 1,107 Benefits paid (950 ) (1,107 ) End of year — — Funded status $ (5,345 ) $ (7,210 ) The following table provides amounts recorded within the account line items of financial position as of December 31: 2022 2021 (in thousands) Accrued employees’ compensation and withholdings $ (853 ) $ (930 ) Retirement plans liability (4,492 ) (6,280 ) Funded status $ (5,345 ) $ (7,210 ) The following table provides amounts recognized in accumulated other comprehensive income (loss) as of December 31: 2022 2021 (in thousands) Prior service credit, before tax $ (31 ) $ (40 ) Deferred taxes (1,689 ) (1,688 ) Total recognized in other comprehensive income (loss), net of tax $ (1,720 ) $ (1,728 ) Expense For the years ended December 31, 2022, 2021, and 2020, Teradyne’s net periodic postretirement benefit (income) cost was comprised of the following: 2022 2021 2020 (in thousands) Components of Net Periodic Postretirement Benefit Income (cost ): Service cost $ 64 $ 64 $ 57 Interest cost 177 170 240 Amortization of prior service credit (9 ) (9 ) (9 ) Net actuarial (gain) loss (1,155 ) (433 ) 421 Total net periodic postretirement benefit (income) cost (923 ) (208 ) 709 Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income: Reversal of amortization items: Prior service credit 9 9 9 Total recognized in other comprehensive income 9 9 9 Total recognized in net periodic postretirement (income) cost and other comprehensive income $ (914 ) $ (199 ) $ 718 Weighted Average Assumptions to Determine Net Periodic Postretirement Benefit Income as of January 1: 2022 2021 2020 Discount rate 2.6 % 2.2 % 3.0 % Initial health care cost trend rate 7.3 7.3 7.1 Ultimate health care cost trend rate 4.5 4.5 4.5 Year in which ultimate health care cost trend rate is reached 2029 2029 2026 Weighted Average Assumptions to Determine Postretirement Benefit Obligation as of December 31: 2022 2021 2020 Discount rate 5.0 % 2.6 % 2.2 % Initial medical trend 7.2 7.3 7.3 Ultimate health care trend 4.5 4.5 4.5 Medical cost trend rate decrease to ultimate rate in year 2032 2029 2029 Contributions Contributions to the U.S. postretirement benefit plan will be approximately $0.9 million in 2023, $1.3 million in 1 to 3 years, $0.8 million in 3 to 5 years and $1.3 million, thereafter. Expected Future Benefit Payments Future benefit payments are expected to be paid as follows: Benefit Payments (in thousands) 2023 $ 853 2023 688 2024 573 2025 436 2027 386 2028-2031 1,291

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2022
Stock-Based Compensation	Q. STOCK-BASED COMPENSATION Stock Compensation Plans Under Teradyne’s stock compensation plans, Teradyne grants time-based restricted stock units, performance-based restricted stock units, stock options and employees are eligible to purchase Teradyne’s common stock through its Employee Stock Purchase Plan (“ESPP”). Service-based restricted stock unit awards granted to employees vest in equal annual installments over four years. Restricted stock unit awards granted to non-employee directors vest after a one-year period, with 100% of the award vesting on the earlier of (a) the first anniversary of the grant date or (b) the date of the following year’s Annual Meeting of Shareholders. Teradyne expenses the cost of the restricted stock unit awards subject to time-based vesting, which is determined to be the fair market value of the shares at the date of grant, ratably over the period during which the restrictions lapse. Performance-based restricted stock units (“PRSUs”) granted to Teradyne’s executive officers may have a performance metric based on relative total shareholder return (“TSR”). Teradyne’s three-year TSR performance is measured against the New York Stock Exchange (“NYSE”) Composite Index. The final number of TSR PRSUs that vest will vary based upon the level of performance achieved from 0% to 200% of the target shares. The TSR PRSUs will vest upon the three-year anniversary of the grant date. The TSR PRSUs are valued using a Monte Carlo simulation model. The number of units expected to be earned, based upon the achievement of the TSR market condition, is factored into the grant date Monte Carlo valuation. Compensation expense is recognized on a straight-line basis over the shorter of the three-year service period or the period from the grant to the date described in the retirement provisions below. Compensation expense for executive officers meeting the retirement provisions prior to the grant date is recognized during the year following the grant. Compensation expense is recognized regardless of the eventual number of units that are earned based upon the market condition, provided the executive officer remains an employee at the end of the three-year period. Compensation expense is reversed if at any time during the three-year service period the executive officer is no longer an employee, subject to the retirement and termination eligibility provisions noted below. PRSUs granted to Teradyne’s executive officers may also have a performance metric based on three-year cumulative non-GAAP profit before interest and tax (“PBIT”) as a percent of Teradyne’s revenue. Non-GAAP PBIT is a financial measure equal to GAAP income from operations less restructuring and other, net; amortization of acquired intangible assets; acquisition and divestiture related charges or credits; pension actuarial gains and losses; non-cash convertible debt interest expense; and other non-recurring gains and charges. The final number of PBIT PRSUs that vest will vary based upon the level of performance achieved from 0% to 200% of the target shares. The PBIT PRSUs will vest upon the three-year anniversary of the grant date. Compensation expense is recognized on a straight-line basis over the shorter of the three-year service period or the period from the grant date to the date described in the retirement provisions below. Compensation expense for executive officers meeting the retirement provisions prior to the grant date is recognized during the year following the grant. Compensation expense is recognized based on the number of units that are earned based upon the three-year Teradyne PBIT as a percent of Teradyne’s revenue, provided the executive officer remains an employee at the end of the three-year period subject to the retirement and termination eligibility provisions noted below. If a PRSU recipient’s employment ends prior to the determination of the performance percentage due to (1) permanent disability or death or (2) retirement or termination other than for cause, after attaining both at least age sixty and at least ten years of service, then all or a portion of the recipient’s PRSUs (based on the actual performance percentage achieved on the determination date) will vest on the date the performance percentage is determined. Except as set forth in the preceding sentence, no PRSUs will vest if the executive officer is no longer an employee at the end of the three-year period. Stock options to purchase Teradyne’s common stock at 100% of the fair market value During 2022, 2021 and 2020, Teradyne granted 0.4 million, 0.3 million and 0.4 million of service-based restricted stock unit awards to employees at a weighted average grant date fair value of $109.42, $114.16, and $71.31, respectively. During 2022, 2021, and 2020, Teradyne granted 0.1 million of service-based restricted stock unit awards to non-employee directors at a weighted average grant date fair value of $105.93, $128.70, and $66.56, respectively. During 2022, 2021, and 2020, Teradyne granted 0.1 million of PBIT PRSUs with a grant date fair value of $110.84, $113.65 and $70.94, respectively. During 2022, 2021 and 2020, Teradyne granted 0.1 million TSR PRSUs, with a grant date fair value of $101.06, $125.02, and $89.93, respectively. The fair value was estimated using the Monte Carlo simulation model with the following assumptions: 2022 2021 2020 Risk-free interest rate 1.4 % 0.2 % 1.5 % Teradyne volatility-historical 47.1 % 43.9 % 34.9 % NYSE Composite Index volatility-historical 22.7 % 22.9 % 11.4 % Dividend yield 0.4 % 0.4 % 0.6 % Expected volatility was based on the historical volatility of Teradyne’s stock and the NYSE Composite Index for each of the 2022, 2021 and 2020 grants over the most recent three-year period. The risk-free interest rate was determined using the U.S. Treasury yield curve in effect at the time of each of the grants. Dividend yield was based upon an estimated annual dividend amount of $0.44 per share for 2022, $0.40 per share for 2021, and $0.40 per share for 2020, divided by Teradyne’s stock price on the grant date of $112.12 for the 2022 grants, $113.48 for the 2021 grants, and $72.10 for the 2020 grants. During 2022, 2021 and 2020, Teradyne granted 0.1 million of service-based stock options to executive officers at a weighted average grant date fair value of $39.01, $36.60, and $20.93, respectively. The fair value of stock options was estimated using the Black-Scholes option-pricing model with the following assumptions: 2022 2021 2020 Expected life (years) 4.0 5.0 5.0 Risk-free interest rate 1.6 % 0.4 % 1.5 % Volatility-historical 43.7 % 37.8 % 32.0 % Dividend yield 0.4 % 0.4 % 0.5 % Teradyne determined the stock options’ expected life based upon historical exercise data for executive officers, the age of the executive officers and the terms of the stock option grant. Volatility was determined using historical volatility for a period equal to the expected life. The risk-free interest rate was determined using the U.S. Treasury yield curve in effect at the time of grant. Dividend yield was based upon an estimated annual dividend amount of $0.44 per share divided by Teradyne’s stock on the grant date of $112.12 for the 2022 grant, $0.40 per share divided by Teradyne’s stock price on the grant date of $113.48 for the 2021 grants, and $72.61 for the 2020 grants. Stock compensation plan activity for the years 2022, 2021, and 2020, is as follows: 2022 2021 2020 (in thousands) Restricted Stock Units: Non-vested at January 1 1,417 1,789 2,269 Awarded 660 447 616 Vested (709 ) (749 ) (1,028 ) Forfeited (51 ) (70 ) (68 ) Non-vested at December 31 1,317 1,417 1,789 Stock Options: Outstanding at January 1 171 216 319 Granted 42 34 56 Exercised (25 ) (78 ) (159 ) Forfeited — (1 ) — Expired — — — Outstanding at December 31 188 171 216 Vested and expected to vest at December 31 188 171 216 Exercisable at December 31 69 30 27 Total shares available for the years 2022, 2021, and 2020: 2022 2021 2020 (in thousands) Shares available: Available for grant at January 1 5,713 6,123 6,727 Options granted (42 ) (34 ) (56 ) Options forfeited — 1 — Restricted stock units awarded (660 ) (447 ) (616 ) Restricted stock units forfeited 51 70 68 Available for grant at December 31 5,062 5,713 6,123 Weighted average restricted stock unit award date fair value information for the years 2022, 2021, and 2020, is as follows: 2022 2021 2020 Non-vested at January 1 $ 67.97 $ 47.84 $ 35.58 Awarded 108.74 115.51 72.76 Vested 54.27 43.99 31.53 Forfeited 85.71 65.52 45.36 Non-vested at December 31 $ 88.71 $ 67.97 $ 47.84 Restricted stock unit awards aggregate intrinsic value information at December 31 for the years 2022, 2021, and 2020 is as follows: 2022 2021 2020 (in thousands) Vested $ 95,408 $ 101,679 $ 71,582 Outstanding 115,087 231,763 214,509 Expected to vest 108,666 231,246 210,301 Restricted stock units weighted average remaining contractual terms (in years) information at December 31 for the years 2022, 2021, and 2020 is as follows: 2022 2021 2020 Outstanding 0.99 0.89 0.96 Expected to vest 0.99 0.89 0.96 Weighted average stock options exercise price information for the year ended December 31, 2022 is as follows: 2022 Outstanding at January 1 $ 62.13 Options granted 112.12 Options exercised 37.13 Options forfeited — Options cancelled — Outstanding at December 31 76.52 Exercisable at December 31 55.90 The total cash received from employees as a result of employee stock options exercised during the years ended December 31, 2022, 2021, and 2020, was $0.9 million, $3.1 million, and $3.8 million, respectively. In connection with these exercises, the tax benefit realized by Teradyne for the years ended December 31, 2022, 2021, and 2020, was $0.1 million, $0.4 million, and $1.5 million, respectively. Stock option aggregate intrinsic value information for the years ended December 31, 2022, 2021, and 2020 is as follows: 2022 2021 2020 (in thousands) Exercised $ 2,030 $ 6,345 $ 9,682 Outstanding 3,963 17,356 16,083 E 1,583 13,500 13,499 Vested and exercisable 2,380 3,856 2,584 Stock options weighted average remaining contractual terms (in years) information at December 31, for the years 2022, 2021, and 2020 is as follows: 2022 2021 2020 Outstanding 4.2 4.4 4.6 E xpected to vest 4.8 4.8 4.9 Vested and exercisable 3.1 2.5 2.5 As of December 31, 2022, total unrecognized expense related to non-vested restricted stock unit awards and stock options was $61.1 million and is expected to be recognized over a weighted average period of 2.5 years. In 2022, 2021 and 2020, Teradyne recognized a discrete tax benefit of $12.3 million, $14.7 million and $9.6 million, respectively, related to net excess tax benefit. Employee Stock Purchase Plan Under the ESPP, eligible employees may purchase shares of common stock through regular payroll deductions of up to 10% of their compensation, to a maximum of shares with a fair market value of $25,000 per calendar year, not to exceed 6,000 shares. Under the plan, the price paid for the common stock is equal to 85% of the stock price on the last business day of the six-month purchase period. In July 2022, 0.2 million shares of common stock were issued to employees who participated in the plan during the first half of 2022 at the price of $76.12 per share. In January 2023, Teradyne issued 0.2 million shares of common stock to employees who participated in the plan during the second half of 2022 at the price of $74.25 per share. In July 2021, 0.1 million shares of common stock were issued to employees who participated in the plan during the first half of 2021 at the price of $113.87 per share. In January 2022, Teradyne issued 0.1 million shares of common stock to employees who participated in the plan during the second half of 2021 at the price of $139.00 per share. In July 2020, 0.2 million shares of common stock were issued to employees who participated in the plan during the first half of 2020 at the price of $71.83 per share. In January 2021, Teradyne issued 0.1 million shares of common stock to employees who participated in the plan during the second half of 2020 at the price of $101.91 per share. As of December 31, 2022, there were 3.9 million shares available for grant under the ESPP. The following table provides the effect to income from operations for recording stock-based compensation for the years ended December 31, 2022, 2021, and 2020: 2022 2021 2020 (in thousands) Cost of revenues $ 4,050 $ 4,196 $ 4,227 Engineering and development 9,992 9,783 12,039 Selling and administrative 34,186 31,664 28,640 Stock-based compensation 48,228 45,643 44,906 Income tax benefit (11,493 ) (14,389 ) (13,060 ) Total stock-based compensation expense after income taxes $ 36,735 $ 31,254 $ 31,846

Savings Plan

Savings Plan	12 Months Ended
	Dec. 31, 2022
Savings Plan	R. SAVINGS PLAN Teradyne sponsors a defined contribution employee retirement savings plan (“Savings Plan”) covering substantially all U.S. employees. Under the Savings Plan, employees may contribute up to 20% of their compensation (subject to Internal Revenue Service limitations). The Savings Plan provides for a discretionary employer match that is determined each year. In 2022, 2021 and 2020, Teradyne matched 100% of eligible employee contributions up to 4% of their compensation for employees not accruing benefits in the U.S. Qualified Pension Plan. There was no match for employees still actively accruing benefits in the U.S. Qualified Pension Plan. Teradyne’s contributions vest 25% per year for the first four years of employment, and contributions for those employees with four years of service vest immediately. In addition, Teradyne sponsors an unfunded U.S. Supplemental Savings Plan to provide savings benefits in excess of those allowed by the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code. The provisions of this plan are the same as the Savings Plan. The liability for the U.S. Supplemental Savings Plan at December 31, 2022 and 2021, was $44.1 million and $47.2 million, respectively, and is included in retirement plan liabilities. Teradyne contributes to defined contributions savings plans for its foreign employees. Under Teradyne’s savings plans, amounts charged to the statements of operations for the years ended December 31, 2022, 2021, and 2020 were $30.1 million, $26.9 million, and $21.7 million, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Taxes	S. INCOME TAXES The components of income before income taxes and the provision (benefit) for income taxes as shown in the consolidated statements of operations were as follows: 2022 2021 2020 (in thousands) Income before income taxes: U.S. $ 385,968 $ 403,451 $ 312,153 Non-U.S. 454,417 757,504 588,862 $ 840,385 $ 1,160,955 $ 901,015 Provision (benefit) for income taxes: Current: U.S. Federal $ 86,692 $ 58,218 $ 58,678 Non-U.S. 74,204 105,153 75,193 State 2,681 300 (1,315 ) 163,577 163,671 132,556 Deferred: U.S. Federal (36,739 ) (15,106 ) (12,604 ) Non-U.S. 1,232 (4,300 ) (5,127 ) State (3,186 ) 2,101 2,043 (38,693 ) (17,305 ) (15,688 ) Total provision for income taxes: $ 124,884 $ 146,366 $ 116,868 Income tax expense for 2022, 2021 and 2020 totaled $124.9 million, $146.4 million, and $116.9 million, respectively. The effective tax rate for 2022, 2021 and 2020 was 14.9%, 12.6% and 13.0%, respectively. At December 31, 2022, Teradyne’s remaining tax liability resulting from the U.S. one-time transition tax on the mandatory deemed repatriation of foreign earnings amounts to $67.0 million. Teradyne will pay approximately $7.9 million related to the transition tax in 2023, $34.5 million in 1 to 3 years, and $24.6 million in 3 to 5 years. Teradyne has made an accounting policy election to account for global intangible low-taxed income (“GILTI”) as a component of tax expense in the period in which Teradyne is subject to the rules and therefore did not provide any deferred tax impacts of GILTI in its consolidated financial statements. On July 27, 2015, in Altera Corp. (“Altera”) v. Commissioner, the U.S. Tax Court issued an opinion invalidating the regulations relating to the treatment of stock-based compensation expense in an intercompany cost-sharing arrangement. A final decision was issued by the Tax Court in December 2015. The IRS appealed the decision in June 2016. On July 24, 2018, the U.S. Court of Appeals for the Ninth Circuit (“Ninth Circuit”) issued a decision that was subsequently withdrawn and a reconstituted panel conferred on the appeal. On June 7, 2019, the Ninth Circuit upheld the cost-sharing regulations. On November 12, 2019 , The increase in the effective tax rate from 2021 to 2022 is primarily attributable to a shift in the geographic distribution of income, which increased the income subject to taxation in higher tax rate jurisdictions relative to lower tax rate jurisdictions, increases in expense from U.S. global low-taxed income and increases in expense from non-deductible officer compensation. These increases in expense were partially offset by increases in benefits from the U.S. foreign derived intangible income deduction and tax credits. The decrease in the effective tax rate from 2020 to 2021 is primarily attributable to a decrease in the expense from U.S. global low-taxed income partially offset by a decrease in the benefit from foreign tax credits and a shift in the geographic distribution of income, which increased the income subject to taxation in higher tax rate jurisdictions relative to lower tax rate jurisdictions. A reconciliation of the effective tax rate for the years 2022, 2021 and 2020 is as follows: 2022 2021 2020 U.S. statutory federal tax rate 21.0 % 21.0 % 21.0 % Non-deductible officers’ compensation 1.3 0.8 0.5 U.S. global intangible low-taxed income 1.2 0.6 2.1 U.S. foreign derived intangible income (3.1 ) (2.3 ) (2.2 ) Foreign taxes (1.9 ) (4.5 ) (5.6 ) U.S. research and development credit (1.8 ) (1.4 ) (1.3 ) Equity compensation (1.1 ) (1.0 ) (0.8 ) Foreign tax credits (1.0 ) (0.5 ) (1.2 ) State income taxes, net of federal tax benefit (0.1 ) 0.2 0.3 Other, net 0.4 (0.3 ) 0.2 14.9 % 12.6 % 13.0 % Teradyne qualifies for a tax holiday in Singapore by fulfilling the requirements of an agreement with the Singapore Economic Development Board under which certain headcount and spending requirements must be met. The tax savings attributable to the Singapore tax holiday for the years ended December 31, 2022, 2021 and 2020 were $16.0 million or $0.09 per diluted share, $33.3 million or $0.18 per diluted share, and $29.9 million or $0.16 per diluted share, respectively. In November 2020, Teradyne entered into an agreement with the Singapore Economic Development Board which extended our Singapore tax holiday under substantially similar terms to the agreement which expired on December 31, 2020. The new tax holiday is scheduled to expire on December 31, 2025. Significant components of Teradyne’s deferred tax assets (liabilities) as of December 31, 2022 and 2021 were as follows: 2022 2021 (in thousands) Deferred tax assets: Tax credits $ 105,503 $ 98,378 Research and development 47,760 — Accruals 30,747 41,459 Inventory valuations 22,554 20,991 Pension liabilities 21,335 28,722 Lease liability 18,679 16,484 Deferred revenue 14,909 11,164 Equity compensation 6,578 6,630 Vacation accrual 5,856 6,050 Investment impairment 3,292 3,292 Marketable securities 2,283 — Net operating loss carryforwards 1,857 1,721 Intangible assets 350 — Other 2,520 774 Gross deferred tax assets 284,223 235,665 Less: valuation allowance (103,807 ) (97,170 ) Total deferred tax assets $ 180,416 $ 138,495 Deferred tax liabilities: Depreciation $ (19,078 ) $ (10,691 ) Right-of-use assets (16,607 ) (14,738 ) Contingent consideration (5,214 ) (5,214 ) Intangible assets — (8,531 ) Marketable securities — (3,220 ) Total deferred tax liabilities $ (40,899 ) $ (42,394 ) Net deferred assets $ 139,517 $ 96,101 As of December 31, 2022 and 2021, Teradyne evaluated the likelihood that it would realize deferred income taxes to offset future taxable income and concluded that it is more likely than not that a substantial majority of its deferred tax assets will be realized through consideration of both the positive and negative evidence. At December 31, 2022 and 2021, Teradyne maintained a valuation allowance for certain deferred tax assets of $103.8 million and $97.2 million, respectively, primarily related to state net operating losses and state tax credit carryforwards, due to the uncertainty regarding their realization. Adjustments could be required in the future if Teradyne estimates that the amount of deferred tax assets to be realized is more or less than the net amount recorded. At December 31, 2022, Teradyne had tax effected operating loss carryforwards that expire in the following years: State Operating Loss Carryforwards Foreign Operating Loss Carryforwards (in thousands) 2023 $ 222 $ — 2024 6 — 2025 4 — 2026 — — 2027 — — 2028-2032 299 676 2033-2037 44 3 Beyond 2037 24 — Non-expiring 29 550 Total $ 628 $ 1,229 Teradyne has approximately $138.4 million of tax credit carryforwards including federal business tax credits of approximately $2.4 million which expire in 2028 through 2032, and state tax credits of $136.1 million, of which $72.0 million do not expire and the remainder expires in the years 2023 through 2042. Teradyne’s gross unrecognized tax benefits for the years ended December 31, 2022, 2021 and 2020 were as follows: 2022 2021 2020 (in thousands) Beginning balance as of January 1 $ 14,465 $ 17,903 $ 21,180 Additions: Tax positions for current year 1,398 1,417 1,082 Tax positions for prior years 13 30 66 Reductions: Tax positions for prior years (56 ) (1,639 ) (2,989 ) Expiration of statutes (212 ) (3,246 ) (1,436 ) Ending balance as of December 31 $ 15,608 $ 14,465 $ 17,903 Current year additions and prior year reductions relate to federal and state research credits. Prior year reductions and expirations of statute relate to foreign net operating loss carryforwards. Of the $15.6 million of unrecognized tax benefits as of December 31, 2022, $10.1 million would impact the consolidated income tax rate if ultimately recognized. The remaining $5.5 million would impact deferred taxes if recognized. As of December 31, 2022, Teradyne does not anticipate a material change in the balance of unrecognized tax benefits during the next twelve months. Teradyne records all interest and penalties related to income taxes as a component of income tax expense. Accrued interest and penalties related to income tax items at December 31, 2022 and 2021 amounted to $0.4 million and $0.3 million, respectively. For the years ended December 31, 2022, 2021 and 2020, expense of $0.1 million, benefit of $0.9 million, and expense of $0.2 million, respectively, was recorded for interest and penalties related to income tax items. Teradyne is subject to U.S. federal income tax, as well as income tax in multiple state, local and foreign jurisdictions. As of December 31, 2022, all material state and local income tax matters have been concluded through 2017, all material federal income tax matters have been concluded through 2017 and all material foreign income tax matters have been concluded through 2016. However, in some jurisdictions, including the United States, operating losses and tax credits may be subject to adjustment until such time as they are utilized and the year of utilization is closed to adjustment. As of December 31, 2022, Teradyne is not permanently reinvested with respect to the unremitted earnings of non-U.S. subsidiaries to the extent that those earnings exceed local statutory and operational requirements. Remittance of those earnings is not expected to result in material income tax.

Operating Segment, Geographic a

Operating Segment, Geographic and Significant Customer Information	12 Months Ended
	Dec. 31, 2022
Operating Segment, Geographic and Significant Customer Information	T. OPERATING SEGMENT, GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION Teradyne has four reportable segments (Semiconductor Test, System Test, Wireless Test and Robotics). Each of the reportable segments represents an individual operating segment. On September 15, 2020, Teradyne announced the appointment of Gregory Smith as President of Robotics reportable segment effective October 1, 2020. With the appointment of the President of Robotics, the Robotics reportable segment is considered one operating segment and one reporting unit. The Semiconductor Test segment includes operations related to the design, manufacturing and marketing of semiconductor test products and services. The System Test segment includes operations related to the design, manufacturing and marketing of products and services for storage and system level test, defense/aerospace instrumentation test, and circuit-board test. The Wireless Test segment includes operations related to the design, manufacturing and marketing of wireless test products and services. The Robotics segment includes operations related to the design, manufacturing and marketing of collaborative robotic arms, autonomous mobile robots and advanced robotic control software. Each operating segment has a segment manager who is accountable to and maintains regular contract with Teradyne’s chief operating decision maker (Teradyne’s chief executive officer) to discuss operating activities, financial results, forecasts, and plans for the segment. Teradyne evaluates performance based on several factors, of which the primary financial measure is business segment income (loss) before income taxes. The accounting policies of the business segments are the same as those described in Note B: “Accounting Policies.” Segment information for the years ended December 31, 2022, 2021, and 2020 is as follows: Semiconductor Test System Test Robotics Wireless Test Corporate and Consolidated (in thousands) 2022 Revenues $ 2,080,590 $ 469,346 $ 403,138 $ 201,720 $ 251 $ 3,155,045 Income (loss) before taxes (1)(2) 634,488 166,879 (16,244 ) 66,820 (11,558 ) 840,385 Total assets (3) 1,382,623 165,925 665,638 94,298 1,192,768 3,501,252 Property additions 126,898 7,275 25,712 3,364 — 163,249 Depreciation and amortization expense 76,532 3,235 25,339 4,991 578 110,675 2021 Revenues $ 2,642,342 $ 467,739 $ 375,905 $ 216,895 $ — $ 3,702,881 Income (loss) before taxes (1)(2) 976,988 163,064 (8,167 ) 83,543 (54,473 ) 1,160,955 Total assets (3) 1,245,596 170,954 701,196 107,513 1,584,166 3,809,425 Property additions 115,618 3,905 9,821 3,128 — 132,472 Depreciation and amortization expense 75,982 3,156 27,336 6,055 12,956 125,485 2020 Revenues $ 2,259,597 $ 409,729 $ 279,731 $ 173,016 $ (604 ) $ 3,121,469 Income (loss) before 739,695 152,092 (24,019 ) 41,950 (8,703 ) 901,015 Total assets (3) 1,070,378 138,295 712,936 106,273 1,624,464 3,652,346 Property additions 168,055 3,092 8,899 4,931 — 184,977 Depreciation and amortization expense 64,998 3,426 36,242 6,258 15,819 126,743 (1) Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, pension and postretirement plan actuarial gains (losses), legal and environmental fees, contingent consideration adjustments, acquisition related charges and compensation and loss on convertible debt conversions in 2021. (2) Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and loss on convertible debt conversions in 2021. (3) Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets. Included in each segment are charges and credits in the following line items in the statements of operations: For the Years Ended December 31, 2022 2021 2020 (in thousands) Semiconductor Test: Cost of revenues—inventory charge $ 21,456 $ 6,661 $ 11,013 Contract termination settlement fee — — 4,000 System Test: Cost of revenues—inventory charge $ 1,730 $ 641 $ 887 Robotics: Cost of revenues—inventory charge $ 3,668 $ 6,403 $ 834 Restructuring and other—employee severance 2,115 1,210 1,584 Restructuring and other—acquisition related expenses and compensation — 1,000 985 Wireless Test: Cost of revenues—inventory charge $ 4,598 $ 1,770 $ 4,800 Corporate and Eliminations: Restructuring and other—legal settlement charge $ 14,700 $ 12,000 $ — Restructuring and other— environmental and legal liabilities 2,700 1,971 — Restructuring and other—gain on sale of asset (3,410 ) — — Other (income) expense, net—loss on convertible debt conversion — 28,828 — Restructuring and other—AutoGuide contingent consideration adjustment — (7,227 ) (19,724 ) Restructuring and other—MiR contingent consideration adjustment — — (3,546 ) Restructuring and other—acquisition related expenses and compensation — (513 ) 1,728 Selling and administrative—equity modification charge — — 766 Information as to Teradyne’s revenues by country is as follows: 2022 2021 2020 (in thousands) Revenues from customers (1): Taiwan $ 626,424 $ 1,117,874 $ 1,178,068 Korea 544,816 502,167 391,571 China 491,798 631,963 465,722 United States 469,948 392,626 321,674 Europe 268,384 259,954 205,587 Japan 162,920 166,231 143,983 Malaysia 142,203 136,774 56,096 Thailand 137,356 138,812 138,787 Philippines 124,107 166,838 68,887 Singapore 99,503 121,582 76,460 Rest of the World 87,586 68,060 74,634 $ 3,155,045 $ 3,702,881 $ 3,121,469 (1) Revenues attributable to a country are based on location of customer site. In 2021 and 2020, revenues from Taiwan Semiconductor Manufacturing Company Ltd., a customer of Teradyne’s Semiconductor Test segment, accounted for 12% and 15%, respectively, of Teradyne’s consolidated revenues. Teradyne estimates consolidated revenues driven by Qualcomm, a customer of our Semiconductor Test, System Test, and Wireless Test segments, combining direct and indirect sales, accounted for approximately 11% of its consolidated revenues in 2022 and less than 10% in 2021 and 2020. Teradyne estimates consolidated revenues driven by one OEM customer, of our Semiconductor Test and Wireless Test segments, combining United States Foreign Total (in thousands) December 31, 2022 $ 328,341 $ 164,076 $ 492,417 December 31, 2021 $ 308,438 $ 147,609 $ 456,047

Stock Repurchase Program

Stock Repurchase Program	12 Months Ended
	Dec. 31, 2022
Stock Repurchase Program	In January 2021, Teradyne’s Board of Directors cancelled the January 2020 repurchase program and approved a repurchase program for up to $2.0 billion of common stock. In 2022, Teradyne repurchased 7.3 million shares of common stock for $752.1 million at an average price of $103.69 per share. In 2021, Teradyne repurchased 4.8 million shares of common stock for $600.0 million at an average price of $125.74 per share. The cumulative repurchases under this repurchase program as of December 31, 2022 were 12.0 million shares of common stock for $1,352.1 million at an average price per share of $112.44. In January 2023, Teradyne’s Board of Directors cancelled the January 2021 repurchase program and approved a new repurchase program for up to $2.0 billion of common stock. Teradyne intends to repurchase up to $500.0 million of its common stock in 2023 based on market conditions. The total price includes commissions and is recorded as a reduction to retained earnings.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2022
Subsequent Events	V. SUBSEQUENT EVENTS In January 2023, Teradyne’s Board of Directors declared a f Mark E. Jagiela retired as Chief Executive Officer of Teradyne and as a member of Teradyne’s Board of Directors effective February 1, 2023. In connection with his retirement, Teradyne entered into an agreement on January 31, 2023 with Mr. Jagiela (the “Retirement Agreement”). Under the Retirement Agreement, Mr. Jagiela’s unvested service based restricted stock units and stock options granted prior to his Retirement Date will continue to vest in accordance with their terms through February 1, 2026; and any vested options or options that vest during that period may be exercised for the remainder of the applicable option term. In the Retirement Agreement, Mr. Jagiela agreed to be bound by non-competition and non-solicitation restrictions through February 1, 2026. The Retirement Agreement also includes additional, standard terms and conditions relating to Mr. Jagiela’s separation from Teradyne. Teradyne will record a stock-based compensation expense of approximately $5.8 million in the first quarter of 2023 related to the Retirement Agreement.

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2022
Valuation and Qualifying Accounts	TERADYNE, INC. SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS Column A Column B Column C Column D Column E Column F Description Balance at Beginning of Period Additions Charged to Cost and Expenses Other Deductions Balance at End of Period (in thousands) Valuation reserve deducted in the balance sheet from the asset to which it applies: Accounts receivable: 2022 Allowance for doubtful account $ 2,012 $ 500 $ (6 ) $ 551 $ 1,955 2021 Allowance for doubtful account $ 2,034 $ 500 $ (27 ) $ 495 $ 2,012 2020 Allowance for doubtful account $ 1,736 $ 356 $ 32 $ 90 $ 2,034 Column A Column B Column C Column D Column E Column F Description Balance at Beginning of Period Additions Charged to Cost and Expenses Other Deductions Balance at End of Period (in thousands) Valuation reserve deducted in the balance sheet from the asset to which it applies: Inventory: 2022 Inventory reserve $ 114,055 $ 31,452 $ 1,926 $ 10,595 $ 136,838 2021 Inventory reserve $ 110,587 $ 15,475 $ 1,335 $ 13,342 $ 114,055 2020 Inventory reserve $ 103,556 $ 17,534 $ (521 ) $ 9,982 $ 110,587 Column A Column B Column C Column D Column E Column F Description Balance at Beginning of Period Additions Charged to Cost and Expenses Other Deductions Balance at End of Period (in thousands) Valuation reserve deducted in the balance sheet from the asset to which it applies: Deferred taxes: 2022 Valuation allowance $ 97,170 $ 7,652 $ 21 $ 1,036 $ 103,807 2021 Valuation allowance $ 84,962 $ 13,502 $ — $ 1,294 $ 97,170 2020 Valuation allowance $ 77,177 $ 7,785 $ — $ — $ 84,962

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Preparation of Financial Statements and Use of Estimates	Preparation of Financial Statements and Use of Estimates The preparation of consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. On an on-going basis, management evaluates its estimates, including those related to inventories, investments, goodwill, intangible and other long-lived assets, accounts receivable, income taxes, deferred tax assets and liabilities, pensions, warranties, contingent consideration liabilities, and loss contingencies. Management bases its estimates on historical experience and on appropriate and customary assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Due to the COVID-19 pandemic, there has been uncertainty and disruption in the global economy and our markets. Management is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Annual Report on Form 10-K. These estimates may change, as new events occur and additional information is obtained. Actual results may differ significantly from these estimates under different assumptions or conditions.
Revenue Recognition	Revenue Recognition Revenue from Contracts with Customers In accordance with ASC 606, Teradyne recognizes revenues, when or as control is transferred to a customer. Teradyne’s determination of revenue is dependent upon a five-step process outlined below. • Teradyne accounts for a contract with a customer when there is written approval, the contract is committed, the rights of the parties, including payment terms, are identified, the contract has commercial substance and consideration is probable of collection. • Teradyne periodically enters into contracts with customers in which a customer may purchase a combination of goods and services, such as products with extended warranty obligations. Teradyne determines performance obligations by assessing whether the products or services are distinct from the other elements of the contract. In order to be distinct, the product or service must perform either on its own or with readily available resources and must be separate within the context of the contract. • Teradyne determines the transaction price to be the amount of consideration to which Teradyne expects to be entitled to. • Transaction price is allocated to each individual performance obligation based on the standalone selling price of that performance obligation. Teradyne uses standalone transactions when available to value each performance obligation. If standalone transactions are not available, Teradyne will estimate the standalone selling price through market assessments or cost plus a reasonable margin analysis. Any discounts from standalone selling price are spread proportionally to each performance obligation. • In order to determine the appropriate timing for revenue recognition, Teradyne first determines if the transaction meets any of three criteria for over time recognition. If the transaction meets the criteria for over time recognition, Teradyne recognizes revenue as the good or service is delivered. Teradyne uses input variables such as hours or months utilized or costs incurred to determine the amount of revenue to recognize in a given period. Input variables are used as they best align consumption with benefit to the customer. For transactions that do not meet the criteria for over time recognition, Teradyne will recognize revenue at a point in time based on an assessment of the five criteria for transfer of control. Teradyne has concluded that revenue should be recognized when shipped or delivered based on contractual terms. Typically, acceptance of Teradyne’s products and services is a formality as Teradyne delivers similar systems, instruments and robots to standard specifications. In cases where acceptance is not deemed a formality, Teradyne will defer revenue recognition until customer acceptance. Performance Obligations Products Teradyne products consist primarily of semiconductor test systems and instruments, defense/aerospace test instrumentation and systems, storage test systems and instruments, circuit-board test and inspection systems and instruments, wireless test systems and robotics products. Teradyne’s hardware is recognized at a point in time upon transfer of control to the customer. Services Teradyne services consist of extended warranties, training and application support, service agreements, post contract customer support (“PCS”) and replacement parts. Each service is recognized based on relative standalone selling price. Extended warranty, training and support, service agreements and PCS are recognized over time based on the period of service. Replacement parts are recognized at a point in time upon transfer of control to the customer. Teradyne does not allow customer returns or provide refunds to customers for any products or services. Teradyne products include a standa rd 12 -month warranty. This warranty is not considered a distinct performance obligation because it does not obligate Teradyne to provide a separate service to the customer and it cannot be purchased separately. Cost related to warranties are included in cost of revenues when product revenues are recognized. As of December 31, 2022 and 2021, deferred revenue and customer advances consisted of the following and are included in the short and long-term deferred revenue and customer advances: 2022 2021 (in thousands) Maintenance, service and training $ 78,089 $ 81,826 Customer advances, undelivered elements and other 59,147 55,112 Extended warranty 56,180 64,168 Total deferred revenue and customer advances $ 193,416 $ 201,106
Product Warranty	Product Warranty Teradyne generally provides a one-year warranty on its products, commencing upon installation, acceptance or shipment. A provision is recorded upon revenue recognition to cost of revenues for estimated warranty expense based on historical experience. Related costs are charged to the warranty accrual as incurred. The balance below is included in other accrued liabilities: Amount (in thousands) Balance at December 31, 2019 $ 8,996 Accruals for warranties issued during the period 28,490 Accruals related to pre-existing warranties 821 Settlements made during the period (21,674 ) Balance at December 31, 2020 16,633 Accruals for warranties issued during the period 35,727 Accruals related to pre-existing warranties (6,846 ) Settlements made during the period (20,937 ) Balance at December 31, 2021 24,577 Accruals for warranties issued during the period 21,851 Accruals related to pre-existing warranties (5,618 ) Settlements made during the period (26,629 ) Balance at December 31, 2022 $ 14,181 When Teradyne receives revenue for extended warranties, beyond one year, it is deferred and recognized on a straight-line basis over the contract period. Related costs are expensed as incurred. The balance below is included in short and long-term deferred revenue and customer advances: Amount (in thousands) Balance at December 31, 2019 $ 30,677 Deferral of new extended warranty revenue 41,694 Recognition of extended warranty deferred revenue (20,442 ) Balance at December 31, 2020 51,929 Deferral of new extended warranty revenue 43,597 Recognition of extended warranty deferred revenue (31,358 ) Balance at December 31, 2021 64,168 Deferral of new extended warranty revenue 33,686 Recognition of extended warranty deferred revenue (41,674 ) Balance at December 31, 2022 $ 56,180
Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful Accounts Trade accounts receivable are recorded at the invoiced amount and do not bear interest. Teradyne maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. Estimated allowances for doubtful accounts are reviewed periodically taking into account the customer’s recent payment history, the customer’s current financial statements and other information regarding the customer’s credit worthiness. Account balances are written off against the allowance when it is determined the receivable will not be recovered. Teradyne sells certain trade accounts receivables on a non-recourse basis to third-party financial institutions pursuant to factoring agreements. Teradyne accounts for these transactions as sales of receivables and presents cash proceeds as a cash provided by operating activities in the consolidated statements of cash flows. Total trade accounts receivable sold under the factoring agreements were $93.9 million and $111.3 million during 2022 and 2021, respectively. Factoring fees for the sales of receivables are recorded in interest expense and are not material.
Inventories	Inventories Inventories are stated at the lower of cost (first-in, first-out basis) or net realizable value. On a quarterly basis, Teradyne uses consistent methodologies to evaluate all inventories for net realizable value. Teradyne records a provision for both excess and obsolete inventory when such write-downs or write-offs are identified through the quarterly review process. The inventory valuation is based upon assumptions about future demand, product mix and possible alternative uses.
Investments	Investments Teradyne accounts for its investments in debt and equity securities in accordance with the provisions of ASC 320-10, “ Investments—Debt and Equity Securities • The length of time and the extent to which the market value has been less than cost; • The financial condition and near-term prospects of the issuer; and • The intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in market value. Teradyne uses the market and income approach techniques to value its financial instruments and there were no changes in valuation techniques during the twelve months ended December 31, 2022 and 2021. Teradyne measures its debt and equity investments at fair value, in accordance with ASC 820-10 , “ Fair Value Measurements and Disclosures. Level 1: Quoted prices in active markets for identical assets as of the reporting date; Level 2: Inputs other than Level 1, that are observable either directly or indirectly as of the reporting date. For example, a common approach for valuing fixed income securities is the use of matrix pricing. Matrix pricing is a mathematical technique used to value securities by relying on the securities’ relationship to other benchmark quoted prices, and is considered a Level 2 input; or Level 3: Unobservable inputs that are not supported by market data. Unobservable inputs are developed based on the best information available, which might include Teradyne’s own data. Teradyne’s debt investments are classified as Level 2, and equity investments are classified as Level 1. Acquisition-related contingent consideration is classified as Level 3. Teradyne determines the fair value of acquisition-related contingent consideration using a Monte Carlo simulation model. Assumptions utilized in the model include forecasted revenues, revenue volatility, earnings before interest and taxes, and discount rate.
Financial Assets and Financial Liabilities	Financial Assets and Financial Liabilities Teradyne records changes in fair value of equity securities directly in earnings and realized gains and losses in other (income) expense, net, in accordance with ASU 2016-01, “ Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities
Prepayments	Prepayments Prepayments consist of the following: 2022 2021 (in thousands) Contract manufacturer and supplier prepayments $ 491,105 $ 364,478 Prepaid taxes 18,625 15,090 Prepaid maintenance and other services 14,545 13,660 Other prepayments 8,687 13,038 Total prepayments $ 532,962 $ 406,266
Retirement and Postretirement Plans	Retirement and Postretirement Plans Teradyne recognizes net actuarial gains and losses and the change in the fair value of the plan assets in its operating results in the year in which they occur or upon any interim remeasurement of the plans. Teradyne calculates the expected return on plan assets using the fair value of the plan assets. Actuarial gains and losses are generally measured annually as of December 31 and, accordingly, recorded during the fourth quarter of each year or upon any interim remeasurement of the plans. Teradyne reports net periodic pension cost and net periodic postretirement benefit costs in accordance with ASU 2017-07, “ Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost actuarial
Goodwill, Intangible and Long-Lived Assets	Goodwill, Intangible and Long-Lived Assets Teradyne accounts for goodwill and intangible assets in accordance with ASC 350-10, “ Intangibles-Goodwill and Other. In accordance with ASC 350-10, Teradyne has the option to perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If Teradyne determines this is the case, Teradyne is required to perform a quantitative goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized. If Teradyne determines that it is more likely than not that the fair value of the reporting unit is greater than its carrying amounts, a quantitative goodwill impairment test is not required. In accordance with ASC 360-10, “ Impairment or Disposal of Long-Lived Assets,
Business Combination	Business Combination Teradyne recognizes the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The fair value of identifiable intangible assets is based on detailed cash flows valuations that use information and assumptions provided by management. Teradyne estimates the fair value of contingent consideration at the time of the acquisition using all pertinent information known to us at the time to assess the probability of payment of contingent amounts or through the use of a Monte Carlo simulation model. Teradyne allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired and liabilities assumed to goodwill. The assumptions used in the valuations for our acquisitions may differ materially from actual results depending on performance of the acquired businesses and other factors. While Teradyne believes the assumptions used were appropriate, different assumptions in the valuation of assets acquired and liabilities assumed could have a material impact on the timing and extent of impact on our statements of operations. Goodwill is assigned to reporting units as of the date of the related acquisition.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost and depreciated over the estimated useful lives of the assets. Leasehold improvements and major renewals are capitalized and included in property, plant and equipment accounts, while expenditures for maintenance and repairs and minor renewals are charged to expense. When assets are retired, the assets and related accumulated depreciation are removed from the accounts and any resulting gain or loss is reflected in the consolidated statements of operations. Teradyne provides for depreciation of its assets principally on the straight-line method with the cost of the assets being charged to expense over their useful lives as follows: Buildings 40 years Building improvements 5 to 10 years Leasehold improvements Lesser of lease term or 10 Furniture and fixtures 10 years Test systems manufactured internally 6 years Machinery, equipment and software 3 to 5 years Test systems manufactured internally are used by Teradyne for customer evaluations and manufacturing and support of its customers. Teradyne depreciates the test systems manufactured internally over a six-year life to cost of revenues, engineering and development, and selling and administrative expenses. Teradyne often sells internally manufactured test equipment to customers. Upon the sale of an internally manufactured test system, the net book value of the system is transferred to inventory and expensed as cost of revenues. The net book value of internally manufactured test systems sold in the years ended December 31, 2022, 2021, and 2020 was $6.6 million, $16.6 million, and $7.3 million, respectively.
Convertible Debt	Convertible Debt Teradyne adopted Accounting Standards Update (“ASU”) ASU 2020-06 – “Debt—Debt with Conversion and Other Options and Derivatives and Hedging—Contracts in Entity’s Own Equity,” on January 1, 2022 using the modified retrospective method of adoption. As a result of adoption, Teradyne recorded an increase of $1.4 million to current debt for unsettled shares, an increase of $1.8 million to deferred tax assets, an increase of $6.6 million to long-term debt for unamortized debt discount, and an increase to retained earnings of $94.6 million for the reclassification of the equity component. Mezzanine equity representing unsettled shares value was reduced to zero and additional paid-in capital was reduced by $100.8 million. In accordance with ASU 2020-06, Teradyne accounts for a convertible debt instrument as a single liability measured at its amortized cost, as long as no other features require bifurcation and recognition as derivatives. Unsettled shares are recorded in current debt, and there is no recognition of a debt discount, which was previously amortized to interest expense. Settled shares reduce the outstanding debt balance in an amount equal to the cash paid, but do not result in any gain or loss on extinguishment. We use the if-converted method in the diluted EPS calculation for convertible instruments.
Leases	Leases Under ASC 842, a contract is or contains a lease when Teradyne has the right to control the use of an identified asset. Teradyne determines if an arrangement is a lease at inception of the contract, which is the date on which the terms of the contract are agreed to and the agreement creates enforceable rights and obligations. The commencement date of the lease is the date that the lessor makes an underlying asset available for use by Teradyne. As of December 31, 2022, Teradyne does not have material leases that have not yet commenced. Teradyne determines if the lease is an operating or finance lease at the lease commencement date based upon the terms of the lease and the nature of the asset. The lease term used to calculate the lease liability includes options to extend or terminate the lease when it is reasonably certain that the option will be exercised. The lease liability is measured at the present value of future lease payments, discounted using the discount rate for the lease at the commencement date. As Teradyne is typically unable to determine the implicit rate, Teradyne uses an incremental borrowing rate based on the lease term and economic environment at commencement date. Teradyne initially measures payments based on an index by using the applicable rate at lease commencement. Variable payments that do not depend on an index are not included in the lease liability and are recognized as they are incurred. The right-of-use (“ROU”) asset is initially measured as the amount of lease liability, adjusted for any initial lease costs, prepaid lease payments, and reduced by any lease incentives. Teradyne’s contracts often include non-lease components such as common area maintenance. Teradyne elected the practical expedient to account for the lease and non-lease components as a single lease component. For leases with a term of one year or less, Teradyne has elected not to record the lease asset or liability. The lease payments are recognized in the consolidated statement of earnings on a straight-line basis over the lease term. Teradyne includes lease costs within cost of revenues and operating expenses. See Note I: “Leases.”
Engineering and Development Costs	Engineering and Development Costs Teradyne’s products are highly technical in nature and require a large and continuing engineering and development effort. Software development costs incurred prior to the establishment of technological feasibility are charged to expense. Software development costs incurred subsequent to the establishment of technological feasibility are capitalized until the product is available for release to customers. To date, the period between achieving technological feasibility and general availability of the product has been short and software development costs eligible for capitalization have not been material. Engineering and development costs are expensed as incurred and consist primarily of salaries, contractor fees including non-recurring engineering charges related to product design, allocated facility costs, depreciation, and tooling costs.
Stock Compensation Plans and Employee Stock Purchase Plan	Stock Compensation Plans and Employee Stock Purchase Plan Stock-based compensation expense is based on the grant-date fair value estimated in accordance with the provisions of ASC 718-10, “ Compensation-Stock Compensation Excess tax benefits or tax deficiencies are recognized as a discrete tax benefit or discrete tax expense to the current income tax provision in Teradyne’s consolidated statements of operations, all excess tax benefits related to share-based payments are reported as cash flows from operating activities, and all cash payments made to taxing authorities on the employees’ behalf for withheld shares are presented as financing activities on the statement of cash flows.
Income Taxes	Income Taxes Deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The measurement of deferred tax assets is reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. Teradyne performed the required assessment of positive and negative evidence regarding the realization of the net deferred tax assets in accordance with ASC 740, “Accounting for Income Taxes.”
Advertising Costs	Advertising Costs Teradyne expenses all advertising costs as incurred. Advertising costs were $17.3 million, $13.4 million and $12.8 million in 2022, 2021 and 2020, respectively.
Translation of Non-U.S. Currencies	Translation of Non-U.S. Currencies The functional currency for all non-U.S. subsidiaries is the U.S. dollar, except for Universal Robots, MiR and Lemsys for which the local currency is its functional currency. All foreign currency denominated monetary assets and liabilities are remeasured on a monthly basis into the functional currency using exchange rates in effect at the end of the period. All foreign currency denominated non-monetary assets and liabilities are remeasured into the functional currency using historical exchange rates. Net foreign exchange gains and losses resulting from remeasurement are included in other (income) expense, net. For Universal Robots, MiR and Lemsys, assets and liabilities are translated into U.S. dollars using exchange rates in effect at the end of the period. Revenues and expense amounts are translated using an average of exchange rates in effect during the period. Translation adjustments are recorded within accumulated other comprehensive income (loss) on the balance sheet. Net foreign exchange gains and losses resulting from remeasurement are included in other (income) expense, net. For the years ended December 31, 2022, 2021 and 2020, losses (gains) from the remeasurement of the monetary assets and liabilities denominated in foreign currencies were $10.8 million, $(2.1) million, and $2.6 million, respectively. These amounts do not reflect the corresponding (gains) losses from foreign exchange contracts. See Note H: “Financial Instruments” regarding foreign exchange contracts.
Net Income per Common Share	Net Income per Common Share Basic net income per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Except where the result would be anti-dilutive, diluted net income per common share is calculated by dividing net income by the sum of the weighted average number of common shares plus common stock equivalents, if applicable. With respect to its convertible debt issued in 2016, Teradyne is required to settle the principal of the convertible debt in cash; accordingly, the principal amount is excluded from the determination of diluted earnings per share. As a result, Teradyne is accounting for the conversion spread using the treasury stock method.
Comprehensive Income	Comprehensive Income Comprehensive income includes net income, unrealized pension and postretirement prior service costs and benefits, unrealized gains and losses on investments in debt marketable securities, unrealized gains and losses on cash flow hedge and foreign currency translation adjustment.

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Deferred Revenue and Customer Advances	As of December 31, 2022 and 2021, deferred revenue and customer advances consisted of the following and are included in the short and long-term deferred revenue and customer advances: 2022 2021 (in thousands) Maintenance, service and training $ 78,089 $ 81,826 Customer advances, undelivered elements and other 59,147 55,112 Extended warranty 56,180 64,168 Total deferred revenue and customer advances $ 193,416 $ 201,106
Other Accrued Liabilities	Amount (in thousands) Balance at December 31, 2019 $ 8,996 Accruals for warranties issued during the period 28,490 Accruals related to pre-existing warranties 821 Settlements made during the period (21,674 ) Balance at December 31, 2020 16,633 Accruals for warranties issued during the period 35,727 Accruals related to pre-existing warranties (6,846 ) Settlements made during the period (20,937 ) Balance at December 31, 2021 24,577 Accruals for warranties issued during the period 21,851 Accruals related to pre-existing warranties (5,618 ) Settlements made during the period (26,629 ) Balance at December 31, 2022 $ 14,181
Extended Product Warranty of Short and Long-Term Deferred Revenue and Customer Advances	Amount (in thousands) Balance at December 31, 2019 $ 30,677 Deferral of new extended warranty revenue 41,694 Recognition of extended warranty deferred revenue (20,442 ) Balance at December 31, 2020 51,929 Deferral of new extended warranty revenue 43,597 Recognition of extended warranty deferred revenue (31,358 ) Balance at December 31, 2021 64,168 Deferral of new extended warranty revenue 33,686 Recognition of extended warranty deferred revenue (41,674 ) Balance at December 31, 2022 $ 56,180
Summary of Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure	Prepayments consist of the following: 2022 2021 (in thousands) Contract manufacturer and supplier prepayments $ 491,105 $ 364,478 Prepaid taxes 18,625 15,090 Prepaid maintenance and other services 14,545 13,660 Other prepayments 8,687 13,038 Total prepayments $ 532,962 $ 406,266
Useful Lives of Assets	Teradyne provides for depreciation of its assets principally on the straight-line method with the cost of the assets being charged to expense over their useful lives as follows: Buildings 40 years Building improvements 5 to 10 years Leasehold improvements Lesser of lease term or 10 Furniture and fixtures 10 years Test systems manufactured internally 6 years Machinery, equipment and software 3 to 5 years

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition	The following table provides information about disaggregated revenue by timing of revenue recognition, primary geographical market, and major product lines. Semiconductor Test Robotics System-on- Memory System Test Universal Mobile Wireless Test Corporate and Eliminations Total (in thousands) For the Year Ended December 31, 2022 (1) Timing of Revenue Recognition Point in Time $ 1,445,238 $ 344,693 $ 402,074 $ 317,514 $ 73,812 $ 189,040 $ 251 $ 2,772,622 Over Time 261,646 29,013 67,272 8,218 3,594 12,680 — 382,423 Total $ 1,706,884 $ 373,706 $ 469,346 $ 325,732 $ 77,406 $ 201,720 $ 251 $ 3,155,045 Geographical Market Asia Pacific $ 1,514,964 $ 360,176 $ 294,350 $ 73,930 $ 15,724 $ 140,767 $ — $ 2,399,911 Americas 122,575 11,987 146,040 112,203 35,213 47,350 251 475,619 Europe, Middle East and Africa 69,345 1,543 28,956 139,599 26,469 13,603 — 279,515 Total $ 1,706,884 $ 373,706 $ 469,346 $ 325,732 $ 77,406 $ 201,720 $ 251 $ 3,155,045 For the Year Ended December 31, 2021 (1) Timing of Revenue Recognition Point in Time $ 1,989,979 $ 365,441 $ 409,383 $ 305,512 $ 60,884 $ 204,247 $ — $ 3,335,446 Over Time 256,751 30,171 58,356 5,670 3,839 12,648 — 367,435 Total $ 2,246,730 $ 395,612 $ 467,739 $ 311,182 $ 64,723 $ 216,895 $ — $ 3,702,881 Geographical Market Asia Pacific $ 2,076,647 $ 381,444 $ 306,812 $ 81,456 $ 12,919 $ 172,103 $ — $ 3,031,381 Americas 102,702 10,665 135,230 94,897 26,069 36,173 — 405,736 Europe, Middle East and Africa 67,381 3,503 25,697 134,829 25,735 8,619 — 265,764 Total $ 2,246,730 $ 395,612 $ 467,739 $ 311,182 $ 64,723 $ 216,895 $ — $ 3,702,881 For the Year Ended December 31, 2020 (1) Timing of Revenue Recognition Point in Time $ 1,659,414 $ 363,324 $ 348,454 $ 214,212 $ 55,533 $ 163,834 $ (604 ) $ 2,804,167 Over Time 217,975 18,884 61,275 7,269 2,717 9,182 — 317,302 Total $ 1,877,389 $ 382,208 $ 409,729 $ 221,481 $ 58,250 $ 173,016 $ (604 ) $ 3,121,469 Geographical Market Asia Pacific $ 1,744,593 $ 364,000 $ 258,521 $ 60,277 $ 6,471 $ 143,969 $ — $ 2,577,831 Americas 77,671 12,999 128,482 64,164 30,186 22,544 (604 ) 335,442 Europe, Middle East and Africa 55,125 5,209 22,726 97,040 21,593 6,503 — 208,196 Total $ 1,877,389 $ 382,208 $ 409,729 $ 221,481 $ 58,250 $ 173,016 $ (604 ) $ 3,121,469 (1) Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2022
Composition of Inventories, Net	Inventories, net consisted of the following at December 31, 2022 and 2021: 2022 2021 (in thousands) Raw material $ 256,065 $ 155,641 Work-in-process 37,982 37,740 Finished goods 30,972 49,949 $ 325,019 $ 243,330

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2022
Property Plant and Equipment, Net	Property, plant and equipment, net consisted of the following at December 31, 2022 and 2021: 2022 2021 (in thousands) Land $ 18,481 $ 17,207 Buildings 128,991 126,468 Machinery, equipment and software 1,059,880 994,828 Furniture and fixtures 29,929 28,743 Leasehold improvements 64,631 64,110 Construction in progress 22,470 8,105 1,324,382 1,239,461 Less: accumulated depreciation 905,699 852,221 $ 418,683 $ 387,240

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Schedule of Fair Value of Financial Assets and Liabilities Measured on Recurring Basis	The following table sets forth by fair value hierarchy Teradyne’s financial assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2022 and 2021: December 31, 2022 Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (in thousands) Assets Cash $ 632,417 $ — $ — $ 632,417 Cash equivalents 161,767 60,589 — 222,356 Available for sale securities: Corporate debt securities — 50,856 — 50,856 U.S. Treasury securities — 39,649 — 39,649 Commercial paper — 7,159 — 7,159 Debt mutual funds 6,580 — — 6,580 U.S. government agency securities — 6,352 — 6,352 Certificates of deposit and time deposits — 1,740 — 1,740 Non-U.S. government securities — 535 — 535 Equity securities: Mutual funds 37,518 — — 37,518 Total $ 838,282 $ 166,880 $ — $ 1,005,162 Derivative assets — 86 — 86 Total $ 838,282 $ 166,966 $ — $ 1,005,248 Liabilities Derivative liabilities — 4,215 — 4,215 Total $ — $ 4,215 $ — $ 4,215 Reported as follows: (Level 1) (Level 2) (Level 3) Total (in thousands) Assets Cash and cash equivalents $ 794,184 $ 60,589 $ — $ 854,773 Marketable securities — 39,612 — 39,612 Long-term marketable securities 44,098 66,679 — 110,777 Prepayments — 86 — 86 Total $ 838,282 $ 166,966 $ — $ 1,005,248 Liabilities Other current liabilities $ — $ 4,215 $ — $ 4,215 Total $ — $ 4,215 $ — $ 4,215 December 31, 2021 Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (in thousands) Assets Cash $ 628,740 $ — $ — $ 628,740 Cash equivalents 412,212 81,247 — 493,459 Available for sale securities: Commercial paper — 189,620 — 189,620 U.S. Treasury securities — 77,789 — 77,789 Corporate debt securities — 56,901 — 56,901 Debt mutual funds 7,971 — — 7,971 U.S. government agency securities — 4,610 — 4,610 Certificates of deposit and time deposits — 1,356 — 1,356 Non-U.S. government securities — 589 — 589 Equity securities: Mutual funds 39,253 — — 39,253 Total $ 1,088,176 $ 412,112 $ — $ 1,500,288 Derivative assets — 92 — 92 Total $ 1,088,176 $ 412,204 $ — $ 1,500,380 Liabilities Derivative liabilities — 118 — 118 Total $ — $ 118 $ — $ 118 Reported as follows: (Level 1) (Level 2) (Level 3) Total (in thousands) Assets Cash and cash equivalents $ 1,040,952 $ 81,247 $ — $ 1,122,199 Marketable securities — 244,231 — 244,231 Long-term marketable securities 47,224 86,634 — 133,858 Prepayments — 92 — 92 Total $ 1,088,176 $ 412,204 $ — $ 1,500,380 Liabilities Other current liabilities $ — $ 118 $ — $ 118 Total $ — $ 118 $ — $ 118
Schedule of Changes in Fair Value of Level 3 Contingent Consideration	Changes in the fair value of Level 3 contingent consideration for the years ended December 31, 2022 and 2021 were as follows: Contingent Consideration (in thousands) Balance at December 31, 2020 $ 7,227 Fair (7,227 ) Balance at December 31, 2021 — Fair value adjustment — Balance at December 31, 2022 $ — (1) During the year ended December 31, 2021, the fair value of contingent consideration for the earn-outs in connection with the acquisition of AutoGuide was reduced to zero, which resulted in a benefit of $7.2 million, primarily due to a decrease in forecasted revenues and earnings before interest and taxes.
Schedule of Carrying Amounts and Fair Values of Financial Instruments	The carrying amounts and fair values of Teradyne’s financial instruments at December 31, 2022 and 2021 were as follows: December 31, 2022 December 31, 2021 Carrying Value Fair Value Carrying Value Fair Value (in thousands) Assets Cash and cash equivalents $ 854,773 $ 854,773 $ 1,122,199 $ 1,122,199 Marketable securities 150,389 150,389 378,089 378,089 Der ivative ass ets 86 86 92 92 Liabilities Derivat liabil ities 4,215 4,215 118 118 Convertible debt (1) 50,115 139,007 108,426 604,648 (1) The carrying value represents the bifurcated debt component only, while the fair value is based on quoted market prices for the convertible note which includes the equity conversion features.
Schedule of Available-for-Sale Marketable Securities	The following tables summarize the composition of available-for-sale marketable securities at December 31, 2022 and 2021: December 31, 2022 Available-for-Sale Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Corporate debt securities $ 57,006 $ 3 $ (6,153 ) $ 50,856 $ 50,667 U.S. Treasury securities 44,030 — (4,381 ) 39,649 39,649 Commercial paper 7,089 70 — 7,159 — Debt mutual funds 6,997 — (417 ) 6,580 3,095 U.S. government agency securities 6,442 — (90 ) 6,352 6,352 Certificates of deposit and time deposits 1,740 — — 1,740 — Non-U.S. government securities 535 — — 535 — $ 123,839 $ 73 $ (11,041 ) $ 112,871 $ 99,763 Reported as follows: Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Marketable securities $ 39,950 $ 70 $ (408 ) $ 39,612 $ 30,713 Long-term marketable securities 83,889 3 (10,633 ) 73,259 69,050 $ 123,839 $ 73 $ (11,041 ) $ 112,871 $ 99,763 December 31, 2021 Available-for-Sale Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Commercial paper $ 189,614 $ 15 $ (9 ) $ 189,620 $ 22,784 U.S. Treasury securities 77,707 551 (470 ) 77,789 46,435 Corporate debt securities 52,266 4,863 (227 ) 56,901 19,422 Debt mutual funds 7,928 43 — 7,971 — U.S. government agency securities 4,617 5 (12 ) 4,610 3,296 Certificates of deposit and time deposits 1,356 — — 1,356 — Non-U.S. government securities 589 — — 589 — $ 334,077 $ 5,477 $ (718 ) $ 338,836 $ 91,937 Reported as follows: Cost Unrealized Gain Unrealized (Loss) Fair Value Fair Market Value of Investments with Unrealized Losses (in thousands) Marketable securities $ 244,213 $ 64 $ (46 ) $ 244,231 $ 54,798 Long-term marketable securities 89,864 5,413 (672 ) 94,605 37,139 $ 334,077 $ 5,477 $ (718 ) $ 338,836 $ 91,937
Contractual Maturities of Investments Held	The contractual maturities of investments in available-for-sale marketable securities held at December 31, 2022 were as follows: Cost Fair Value (in thousands) Due within one year $ 39,950 $ 39,612 Due after 1 year through 5 years 33,045 31,466 Due after 5 years through 10 years 4,782 4,232 Due after 10 years 39,065 30,981 Total $ 116,842 $ 106,291
Schedule of Notional Amount of Derivatives	At December 31, 2022 and 2021, Teradyne had the following contracts to buy and sell non-U.S. currencies for U.S. dollars and other non-U.S. currencies with the following notional amounts: December 31, 2022 December 31, 2021 Buy Position Sell Position Net Total Buy Position Sell Position Net Total (in millions) Japanese Yen $ (37.1 ) $ — $ (37.1 ) $ (31.4 ) $ — $ (31.4 ) Taiwan Dollar (29.2 ) — (29.2 ) (35.1 ) — (35.1 ) Korean Won (6.4 ) — (6.4 ) (4.2 ) — (4.2 ) British Pound Sterling (1.2 ) — (1.2 ) (1.8 ) — (1.8 ) Euro — 38.4 38.4 — 44.9 44.9 Singapore Dollar — 33.5 33.5 — 61.9 61.9 Philippine Peso — 2.7 2.7 — 3.9 3.9 Chinese Yuan — 2.2 2.2 — 2.8 2.8 Total $ (73.9 ) $ 76.8 $ 2.9 $ (72.5 ) $ 113.5 $ 41.0
Schedule of Foreign Currency Cash Flow Hedges	At December 31, 2022 and 2021, Teradyne had the following cash flow hedge contracts to buy and sell non-U.S. currencies for U.S. dollars with the following notional amounts: December 31, 2022 December 31, 2021 Buy Position Sell Position Net Total Buy Position Sell Position Net Total (in millions) Japanese Yen $ (23.4 ) $ 61.2 $ 37.8 $ — $ — $ — Taiwan Dollar (5.5 ) 10.9 5.4 — — — Total $ (28.9 ) $ 72.1 $ 43.2 $ — $ — $ —
Schedule of Derivative Instruments in Statement of Financial Position at Fair Value	The following table summarizes the fair value of derivative instruments as of December 31, 2022 and 2021: Balance Sheet Location December 31, 2022 December 31, 2021 (in thousands) Derivatives not designated as hedging instruments: Foreign exchange forward contracts Prepayments $ 86 $ 92 Foreign exchange forward contracts Other current liabilities (990 ) (118 ) Derivatives designated as hedging instruments: Foreign exchange option contracts Other current liabilities (3,225 ) — Total derivatives $ (4,129 ) $ (26 )
Schedule of Effect of Derivative Instruments on Statement of Operations Recognized	The following table summarizes the effect of derivative instruments in the statements of operations recognized for the years ended December 31, 2022, 2021, and 2020: Location of (Gains) Losses Recognized in Statement of Operations December 31, 2022 December 31, 2021 December 31, 2020 (in thousands) Derivatives not designated as hedging instruments: Foreign exchange forward contracts Other (income) expense, net $ (2,482 ) $ 6,488 $ 3,515 Derivatives designated as hedging instruments: Foreign exchange option contracts Revenue (251 ) — — Total derivatives $ (2,733 ) $ 6,488 $ 3,515

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Supplemental cash flow information related to leases	Supplemental cash flows information related to leases was as follows: For the Years Ended December 31, December 31, December 31, (in thousands) Cash paid for amounts included in the measurement of lease liabilities included in operating cash flows: $ 20,775 $ 24,593 $ 24,136 Right-of-use assets obtained in exchange for new lease obligations 26,149 34,246 14,801
Schedule of operating lease, maturity	Maturities of lease liabilities as of December 31, 2022 were as follows: Operating Lease (in thousands) 2023 $ 20,120 2024 18,239 2025 15,308 2026 10,635 2027 8,117 Thereafter 17,963 Total lease payments 90,382 Less imputed interest (7,612 ) Total lease liabilities $ 82,770

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2022
Components of Convertible Senior Notes	The below tables represent the key components of Teradyne’s convertible senior notes: December 31, December 31, (in thousands) Debt principal $ 50,228 $ 116,980 Unamortized debt issuance fees (1) 113 8,554 Net carrying amount of convertible debt $ 50,115 $ 108,426 Reported as follows: December 31, December 31, (in thousands) Current debt $ 50,115 $ 19,182 Long-term debt — 89,244 Net carrying amount of convertible debt $ 50,115 $ 108,426 For the Years Ended December 31, December 31, (in thousands) Contractual interest expense on the coupon $ 732 $ 3,009 Amortization of the issuance fees recognized as interest expense (2) 209 11,019 Total interest expense on the convertible debt $ 941 $ 14,028 (1) Unamortized debt issuance fees as of December 31, 2021 include unamortized debt discount of $8.0 million, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022. (2) For the year ended December 31, 2021 includes the amortization of debt discount component, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2022
Changes in Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss), which is presented net of tax, consist of the following: Foreign Currency Translation Adjustment Unrealized Gains Marketable Securities Unrealized Losses on Cash Flow Retirement Plans Prior Service Credit Total (in thousands) Balance at December 31, 2020, net of tax of $0, $1,910, $0, $(1,126), respectively $ 25,389 $ 6,954 $ — $ 1,173 $ 33,516 Other comprehensive loss before reclassifications, net of tax of $0, $(578), $0, $0, respectively (36,207 ) (2,255 ) — — (38,462 ) Amounts reclassified from accumulated other comprehensive income, net of tax of $0, $(277), $0, $(2), respectively — (995 ) — (7 ) (1,002 ) Net current period other comprehensive loss, net of tax of $0, $(855), $0, $(2), respectively (36,207 ) (3,250 ) — (7 ) (39,464 ) Balance at December 31, 2021, net of tax of $0, $1,055, $0, $(1,128), respectively $ (10,818 ) $ 3,704 $ — $ 1,166 $ (5,948 ) Other comprehensive loss before reclassifications, net of tax of $0, $(3,388), $(708), $0, respectively (29,031 ) (12,666 ) (2,517 ) — (44,214 ) Amounts reclassified from accumulated other comprehensive income (loss), — 301 — (7 ) 294 Net current period other comprehensive loss, net of tax of $0, $(3,363), $(708), $(2), respectively (29,031 ) (12,365 ) (2,517 ) (7 ) (43,920 ) Balance at December 31, 2022, net of tax of $0, $(2,308), $(708), $(1,130), respectively $ (39,849 ) $ (8,661 ) $ (2,517 ) $ 1,159 $ (49,868 )
Reclassifications Out of Accumulated Other Comprehensive Income (Loss) to Statements of Operations	Reclassifications out of accumulated other comprehensive income (loss) to the statements of operations for the years ended December 31, 2022, 2021, and 2020, were as follows: Details about Accumulated Other Comprehensive Income (Loss) Components For the year s Affected Line Item in the Statements of Operations December 31, 2022 December 31, 2021 December 31, 2020 (in thousands) Available-for-sale marketable securities Unrealized (losses) gains, net of tax of $(25), $277, $665, respectively $ (301 ) $ 995 $ 2,365 Other (income) Defined benefit pension and postretirement plans: Amortization of prior service benefit, net of tax of $2, $2, $2, respectively 7 7 7 (a ) Total reclassifications, net of tax of $(23), $279, $667, respectively $ (294 ) $ 1,002 $ 2,372 Net income (a) The amortization of prior service credit is included in the computation of net periodic pension cost and postretirement benefit; see Note P: “Retirement Plans.”

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Changes in Carrying Amount of Goodwill by Segment	The changes in the carrying amount of goodwill by reportable segments for the years ended December 31, 2022 and 2021 are as follows: Robotics Wireless Test Semiconductor Test System Test Total (in thousands) Balance at December 31, 2020: Goodwill $ 433,752 $ 361,819 $ 262,155 $ 158,699 $ 1,216,425 Accumulated impairment losses — (353,843 ) (260,540 ) (148,183 ) (762,566 ) 433,752 7,976 1,615 10,516 453,859 Foreign currency translation adjustment (27,781 ) — (54 ) — (27,835 ) Balance at December 31, 2021: Goodwill 405,971 361,819 262,101 158,699 1,188,590 Accumulated impairment losses — (353,843 ) (260,540 ) (148,183 ) (762,566 ) 405,971 7,976 1,561 10,516 426,024 Foreign currency translation adjustment (22,805 ) — (24 ) — (22,829 ) Balance at December 31, 2022: Goodwill 383,166 361,819 262,077 158,699 1,165,761 Accumulated impairment losses — (353,843 ) (260,540 ) (148,183 ) (762,566 ) $ 383,166 $ 7,976 $ 1,537 $ 10,516 $ 403,195
Schedule of Amortizable Intangible Assets	Amortizable intangible assets consist of the following and are included in intangible assets, net on the balance sheets: December 31, 2022 Gross Carrying Amount (1) Accumulated Amortization (1) Foreign Net Carrying Amount (in thousands) Developed technology $ 270,967 $ (234,208 ) $ (5,935 ) $ 30,824 Customer relationships 57,739 (51,186 ) 172 6,725 Tradenames and trademarks 59,387 (41,930 ) (1,528 ) 15,929 Total intangible assets $ 388,093 $ (327,324 ) $ (7,291 ) $ 53,478 December 31, 2021 Gross Carrying Amount Accumulated Amortization Foreign Currency Net Carrying Amount (in thousands) Developed technology $ 272,547 $ (223,413 ) $ (4,093 ) $ 45,041 Customer relationships 57,739 (48,921 ) 209 9,027 Tradenames and trademarks 59,387 (37,237 ) (583 ) 21,567 Total intangible assets $ 389,673 $ (309,571 ) $ (4,467 ) $ 75,635 (1) In 2022, $1.6 million of amortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization.
Schedule of Estimated Intangible Assets Amortization Expense	Estimated intangible assets amortization expense for each of the five succeeding fiscal years is as follows: Year Amortization Expense (in thousands) 2023 $ 18,835 2024 18,527 2025 11,230 2026 2,350 2027 1,134 Thereafter 1,402

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2022
Computation of Basic and Diluted Net Income (Loss) Per Common Share	The following table sets forth the computation of basic and diluted net income per common share: 2022 2021 2020 (in thousands, except per share amounts) Net income for basic and diluted net income per share $ 715,501 $ 1,014,589 $ 784,147 Weighted average common shares-basic 158,434 164,960 166,120 Effect of dilutive potential common shares: Convertible note hedge warrant shares (1) 8,806 9,956 6,989 Incremental shares from assumed conversion of convertible notes (2) 1,763 7,435 8,528 Restricted stock units 657 1,180 1,264 Stock options 52 86 131 Employee stock purchase rights 22 8 10 Dilutive potential common shares 11,300 18,665 16,922 Weighted average common shares-diluted 169,734 183,625 183,042 Net income per common share-basic $ 4.52 $ 6.15 $ 4.72 Net income per common share-diluted $ 4.22 $ 5.53 $ 4.28 (1) Convertible notes hedge warrant shares were calculated using the difference between the average Teradyne stock price for the period and the warrant price, multiplied by the number of warrant shares. The result of this calculation, representing the total intrinsic value of the warrant, was divided by the average Teradyne stock price for the period. (2) Incremental shares from the assumed conversion of the convertible notes was calculated using the difference between the average Teradyne stock price for the period and the conversion price, multiplied by the number of convertible notes shares. The result of this calculation, representing the total intrinsic value of the convertible debt, was divided by the average Teradyne stock price for the period.

Retirement Plans (Tables)

Retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Defined Benefit Pension and Postretirement Benefit Plan Assets and Obligations	The December 31 balances of these defined benefit pension plans assets and obligations are shown below: 2022 2021 United States Foreign United States Foreign (in thousands) Assets and Obligations Change in benefit obligation: Projected benefit obligation: Beginning of year $ 192,472 $ 45,774 $ 202,233 $ 50,988 Service cost 1,588 784 1,784 941 Interest cost 4,886 482 4,427 337 Actuarial (gain) loss (45,932 ) (13,181 ) (6,432 ) (2,257 ) Benefits paid (9,200 ) (863 ) (9,337 ) (925 ) Liability (gain) loss due to settlement — — (204 ) — Non-U.S. currency movement — (3,061 ) — (3,310 ) End of year 143,814 29,935 192,472 45,774 Change in plan assets: Fair value of plan assets: Beginning of year 149,578 2,017 158,855 1,856 Actual return on plan assets (31,835 ) 153 (3,217 ) 33 Company contributions 3,217 949 3,276 1,022 Benefits paid (9,200 ) (863 ) (9,337 ) (925 ) Non-U.S. currency movement — (169 ) — 31 End of year 111,760 2,087 149,578 2,017 Funded status $ (32,054 ) $ (27,848 ) $ (42,894 ) $ (43,757 )
Amounts Recorded within Statement of Financial Position	The following table provides amounts recorded within the account line items of the statements of financial position as of December 31: 2022 2021 United States Foreign United States Foreign (in thousands) Retirement plans assets $ 11,761 $ — $ 15,110 $ — Accrued employees’ compensation and withholdings (3,055 ) (1,191 ) (3,288 ) (936 ) Retirement plans liabilities (40,760 ) (26,657 ) (54,716 ) (42,821 ) Funded status $ (32,054 ) $ (27,848 ) $ (42,894 ) $ (43,757 )
Pension Plans with Accumulated Benefit Obligation and Projected Benefit Obligation in Excess of Plan Assets	Information for pension plans with an accumulated benefit obligation in excess of plan assets as of December 31: 2022 2021 United Foreign United Foreign (in millions) Projected benefit obligation $ 43.8 $ 29.9 $ 58.0 $ 45.8 Accumulated benefit obligation 42.3 28.6 55.7 42.5 Fair value of plan assets — 2.1 — 2.0
Net Periodic Pension and Postretirement Benefit Costs	Expense For the years ended December 31, 2022, 2021, and 2020, Teradyne’s net periodic pension (income) cost was comprised of the following: 2022 2021 2020 United States Foreign United States Foreign United States Foreign (in thousands) Components of Net Periodic Pension (Income) Cost: Service cost $ 1,588 $ 784 $ 1,784 $ 941 $ 1,773 $ 907 Interest cost 4,886 482 4,427 337 5,770 516 Expected (2,927 ) (75 ) (3,858 ) (67 ) (4,840 ) (65 ) Net actuarial(gain) loss (11,170 ) (13,259 ) 643 (2,223 ) 6,463 2,949 Settlement (gain) loss — — (204 ) — 451 — Total net periodic pension (income) cost $ (7,623 ) $ (12,068 ) $ 2,792 $ (1,012 ) $ 9,617 $ 4,307
Weighted Average Assumptions to Determine Net Periodic Cost and Benefit Obligation	Weighted Average Assumptions to Determine Net Periodic Pension Cost at January 1: 2022 2021 2020 United States Foreign United States Foreign United States Foreign Discount rate 2.5 % 1.1 % 2.2 % 0.7 % 2.8 % 1.1 % Expected return on plan assets 2.0 4.0 2.4 3.5 3.0 3.8 Salary progression rate 2.4 2.2 2.4 2.3 2.6 2.5 Weighted Average Assumptions to Determine Pension Obligations at December 31: 2022 2021 United Foreign United Foreign Discount rate 4.9 % 3.5 % 2.6 % 1.1 % Salary progression rate 2.5 2.1 2.4 2.2
Weighted Average Pension Asset Allocations by Category	The following table provides weighted average pension asset allocation by asset category at December 31, 2022 and 2021: 2022 2021 United Foreign United Foreign Fixed income securities 94.0 % — % 94.0 % — % Equity securities 5.0 — 5.0 — Other 1.0 100.0 1.0 100.0 100.0 % 100.0 % 100.0 % 100.0 %
Target Asset Allocation and Index for Each Asset Category	The target asset allocation and the index for each asset category for the U.S. Plan, per the investment policy, are as follows: Asset Category: Policy Index: Target Allocation U.S. corporate fixed income Bloomberg Barclays U.S. Corporate A or Better Index 75 % U.S. government fixed income Bloomberg Barclays U.S. Long Government Bond Index 14 Global equity MSCI World Minimum Volatility Index 5 High yield fixed income Bloomberg Barclays U.S. Corporate High Yield Index 5 Cash Citigroup Three Month U.S. Treasury Bill 1
Changes in Fair Value of Pension Assets	The fair value of pension plan assets by asset category and by level at December 31, 20 2 1 December 31, 2022 United States Foreign Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in thousands) Fixed income securities: Corporate debt securities $ — $ 89,403 $ — $ 89,403 $ — $ — $ — $ — U.S. government securities — 15,631 — 15,631 — — — — Global equity — 5,579 — 5,579 — — — — Other — — — — — 2,087 — 2,087 Cash and cash equivalents 1,147 — — 1,147 — — — — Total $ 1,147 $ 110,613 $ — $ 111,760 $ — $ 2,087 $ — $ 2,087 December 31, 2021 United States Foreign Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in thousands) Fixed income securities: Corporate debt securities $ — $ 119,805 $ — $ 119,805 $ — $ — $ — $ — U.S. government securities — 20,847 — 20,847 — — — — Global equity — 7,426 — 7,426 — — — — Other — — — — — 2,017 — 2,017 Cash and cash equivalents 1,500 — — 1,500 — — — — Total $ 1,500 $ 148,078 $ — $ 149,578 $ — $ 2,017 $ — $ 2,017
Expected Future Benefit Payments	Expected Future Pension Benefit Payments Future benefit payments are expected to be paid as follows: United States Foreign (in thousands) 2023 $ 10,323 $ 1,239 2024 9,274 1,055 2025 9,912 1,014 2026 9,971 1,130 2027 10,742 1,239 2028-2031 52,877 8,216
Postretirement Benefit Plans
Defined Benefit Pension and Postretirement Benefit Plan Assets and Obligations	The December 31 balances of the postretirement assets and obligations are shown below: 2022 2021 (in thousands) Assets and Obligations Change in benefit obligation: Projected benefit obligation: Beginning of year $ 7,210 $ 8,515 Service cost 64 64 Interest cost 177 170 Actuarial gain (1,155 ) (433 ) Benefits paid (950 ) (1,107 ) End of year 5,345 7,210 Change in plan assets: Fair value of plan assets: Beginning of year — — Company contributions 950 1,107 Benefits paid (950 ) (1,107 ) End of year — — Funded status $ (5,345 ) $ (7,210 )
Amounts Recorded within Statement of Financial Position	The following table provides amounts recorded within the account line items of financial position as of December 31: 2022 2021 (in thousands) Accrued employees’ compensation and withholdings $ (853 ) $ (930 ) Retirement plans liability (4,492 ) (6,280 ) Funded status $ (5,345 ) $ (7,210 )
Amounts Recognized in Accumulated Other Comprehensive Income (loss)	The following table provides amounts recognized in accumulated other comprehensive income (loss) as of December 31: 2022 2021 (in thousands) Prior service credit, before tax $ (31 ) $ (40 ) Deferred taxes (1,689 ) (1,688 ) Total recognized in other comprehensive income (loss), net of tax $ (1,720 ) $ (1,728 )
Net Periodic Pension and Postretirement Benefit Costs	For the years ended December 31, 2022, 2021, and 2020, Teradyne’s net periodic postretirement benefit (income) cost was comprised of the following: 2022 2021 2020 (in thousands) Components of Net Periodic Postretirement Benefit Income (cost ): Service cost $ 64 $ 64 $ 57 Interest cost 177 170 240 Amortization of prior service credit (9 ) (9 ) (9 ) Net actuarial (gain) loss (1,155 ) (433 ) 421 Total net periodic postretirement benefit (income) cost (923 ) (208 ) 709 Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income: Reversal of amortization items: Prior service credit 9 9 9 Total recognized in other comprehensive income 9 9 9 Total recognized in net periodic postretirement (income) cost and other comprehensive income $ (914 ) $ (199 ) $ 718
Weighted Average Assumptions to Determine Net Periodic Cost and Benefit Obligation	Weighted Average Assumptions to Determine Net Periodic Postretirement Benefit Income as of January 1: 2022 2021 2020 Discount rate 2.6 % 2.2 % 3.0 % Initial health care cost trend rate 7.3 7.3 7.1 Ultimate health care cost trend rate 4.5 4.5 4.5 Year in which ultimate health care cost trend rate is reached 2029 2029 2026 Weighted Average Assumptions to Determine Postretirement Benefit Obligation as of December 31: 2022 2021 2020 Discount rate 5.0 % 2.6 % 2.2 % Initial medical trend 7.2 7.3 7.3 Ultimate health care trend 4.5 4.5 4.5 Medical cost trend rate decrease to ultimate rate in year 2032 2029 2029
Expected Future Benefit Payments	Future benefit payments are expected to be paid as follows: Benefit Payments (in thousands) 2023 $ 853 2023 688 2024 573 2025 436 2027 386 2028-2031 1,291

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2022
Schedule of Estimated Fair Value of TSR Performance-Based Restricted Stock Unit Awards Assumptions	The fair value was estimated using the Monte Carlo simulation model with the following assumptions: 2022 2021 2020 Risk-free interest rate 1.4 % 0.2 % 1.5 % Teradyne volatility-historical 47.1 % 43.9 % 34.9 % NYSE Composite Index volatility-historical 22.7 % 22.9 % 11.4 % Dividend yield 0.4 % 0.4 % 0.6 %
Fair Value of Stock Options Using Assumptions	The fair value of stock options was estimated using the Black-Scholes option-pricing model with the following assumptions: 2022 2021 2020 Expected life (years) 4.0 5.0 5.0 Risk-free interest rate 1.6 % 0.4 % 1.5 % Volatility-historical 43.7 % 37.8 % 32.0 % Dividend yield 0.4 % 0.4 % 0.5 %
Stock Compensation Plan Activity	Stock compensation plan activity for the years 2022, 2021, and 2020, is as follows: 2022 2021 2020 (in thousands) Restricted Stock Units: Non-vested at January 1 1,417 1,789 2,269 Awarded 660 447 616 Vested (709 ) (749 ) (1,028 ) Forfeited (51 ) (70 ) (68 ) Non-vested at December 31 1,317 1,417 1,789 Stock Options: Outstanding at January 1 171 216 319 Granted 42 34 56 Exercised (25 ) (78 ) (159 ) Forfeited — (1 ) — Expired — — — Outstanding at December 31 188 171 216 Vested and expected to vest at December 31 188 171 216 Exercisable at December 31 69 30 27
Share Based Compensation Total Shares Available	Total shares available for the years 2022, 2021, and 2020: 2022 2021 2020 (in thousands) Shares available: Available for grant at January 1 5,713 6,123 6,727 Options granted (42 ) (34 ) (56 ) Options forfeited — 1 — Restricted stock units awarded (660 ) (447 ) (616 ) Restricted stock units forfeited 51 70 68 Available for grant at December 31 5,062 5,713 6,123
Weighted-Average Restricted Stock Unit Award Date Fair Value	Weighted average restricted stock unit award date fair value information for the years 2022, 2021, and 2020, is as follows: 2022 2021 2020 Non-vested at January 1 $ 67.97 $ 47.84 $ 35.58 Awarded 108.74 115.51 72.76 Vested 54.27 43.99 31.53 Forfeited 85.71 65.52 45.36 Non-vested at December 31 $ 88.71 $ 67.97 $ 47.84
Restricted Stock Unit Awards Aggregate Intrinsic Value	Restricted stock unit awards aggregate intrinsic value information at December 31 for the years 2022, 2021, and 2020 is as follows: 2022 2021 2020 (in thousands) Vested $ 95,408 $ 101,679 $ 71,582 Outstanding 115,087 231,763 214,509 Expected to vest 108,666 231,246 210,301
Restricted Stock Units Weighted Average Remaining Contractual Terms	Restricted stock units weighted average remaining contractual terms (in years) information at December 31 for the years 2022, 2021, and 2020 is as follows: 2022 2021 2020 Outstanding 0.99 0.89 0.96 Expected to vest 0.99 0.89 0.96
Weighted Average Stock Options Exercise Price	Weighted average stock options exercise price information for the year ended December 31, 2022 is as follows: 2022 Outstanding at January 1 $ 62.13 Options granted 112.12 Options exercised 37.13 Options forfeited — Options cancelled — Outstanding at December 31 76.52 Exercisable at December 31 55.90
Stock Option Aggregate Intrinsic Value Information	Stock option aggregate intrinsic value information for the years ended December 31, 2022, 2021, and 2020 is as follows: 2022 2021 2020 (in thousands) Exercised $ 2,030 $ 6,345 $ 9,682 Outstanding 3,963 17,356 16,083 E 1,583 13,500 13,499 Vested and exercisable 2,380 3,856 2,584
Stock Options Weighted Average Remaining Contractual Terms	Stock options weighted average remaining contractual terms (in years) information at December 31, for the years 2022, 2021, and 2020 is as follows: 2022 2021 2020 Outstanding 4.2 4.4 4.6 E xpected to vest 4.8 4.8 4.9 Vested and exercisable 3.1 2.5 2.5
Effect to Income (Loss) from Operations for Recording Stock-Based Compensation	The following table provides the effect to income from operations for recording stock-based compensation for the years ended December 31, 2022, 2021, and 2020: 2022 2021 2020 (in thousands) Cost of revenues $ 4,050 $ 4,196 $ 4,227 Engineering and development 9,992 9,783 12,039 Selling and administrative 34,186 31,664 28,640 Stock-based compensation 48,228 45,643 44,906 Income tax benefit (11,493 ) (14,389 ) (13,060 ) Total stock-based compensation expense after income taxes $ 36,735 $ 31,254 $ 31,846

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Schedule of Income (Loss) Before Income Taxes and Provision (Benefit) for Income Taxes from Operations	The components of income before income taxes and the provision (benefit) for income taxes as shown in the consolidated statements of operations were as follows: 2022 2021 2020 (in thousands) Income before income taxes: U.S. $ 385,968 $ 403,451 $ 312,153 Non-U.S. 454,417 757,504 588,862 $ 840,385 $ 1,160,955 $ 901,015 Provision (benefit) for income taxes: Current: U.S. Federal $ 86,692 $ 58,218 $ 58,678 Non-U.S. 74,204 105,153 75,193 State 2,681 300 (1,315 ) 163,577 163,671 132,556 Deferred: U.S. Federal (36,739 ) (15,106 ) (12,604 ) Non-U.S. 1,232 (4,300 ) (5,127 ) State (3,186 ) 2,101 2,043 (38,693 ) (17,305 ) (15,688 ) Total provision for income taxes: $ 124,884 $ 146,366 $ 116,868
Reconciliation of Effective Tax Rate	A reconciliation of the effective tax rate for the years 2022, 2021 and 2020 is as follows: 2022 2021 2020 U.S. statutory federal tax rate 21.0 % 21.0 % 21.0 % Non-deductible officers’ compensation 1.3 0.8 0.5 U.S. global intangible low-taxed income 1.2 0.6 2.1 U.S. foreign derived intangible income (3.1 ) (2.3 ) (2.2 ) Foreign taxes (1.9 ) (4.5 ) (5.6 ) U.S. research and development credit (1.8 ) (1.4 ) (1.3 ) Equity compensation (1.1 ) (1.0 ) (0.8 ) Foreign tax credits (1.0 ) (0.5 ) (1.2 ) State income taxes, net of federal tax benefit (0.1 ) 0.2 0.3 Other, net 0.4 (0.3 ) 0.2 14.9 % 12.6 % 13.0 %
Deferred Tax Assets (Liabilities)	Significant components of Teradyne’s deferred tax assets (liabilities) as of December 31, 2022 and 2021 were as follows: 2022 2021 (in thousands) Deferred tax assets: Tax credits $ 105,503 $ 98,378 Research and development 47,760 — Accruals 30,747 41,459 Inventory valuations 22,554 20,991 Pension liabilities 21,335 28,722 Lease liability 18,679 16,484 Deferred revenue 14,909 11,164 Equity compensation 6,578 6,630 Vacation accrual 5,856 6,050 Investment impairment 3,292 3,292 Marketable securities 2,283 — Net operating loss carryforwards 1,857 1,721 Intangible assets 350 — Other 2,520 774 Gross deferred tax assets 284,223 235,665 Less: valuation allowance (103,807 ) (97,170 ) Total deferred tax assets $ 180,416 $ 138,495 Deferred tax liabilities: Depreciation $ (19,078 ) $ (10,691 ) Right-of-use assets (16,607 ) (14,738 ) Contingent consideration (5,214 ) (5,214 ) Intangible assets — (8,531 ) Marketable securities — (3,220 ) Total deferred tax liabilities $ (40,899 ) $ (42,394 ) Net deferred assets $ 139,517 $ 96,101
Operating Loss Carryforwards	At December 31, 2022, Teradyne had tax effected operating loss carryforwards that expire in the following years: State Operating Loss Carryforwards Foreign Operating Loss Carryforwards (in thousands) 2023 $ 222 $ — 2024 6 — 2025 4 — 2026 — — 2027 — — 2028-2032 299 676 2033-2037 44 3 Beyond 2037 24 — Non-expiring 29 550 Total $ 628 $ 1,229
Unrecognized Tax Benefits	Teradyne’s gross unrecognized tax benefits for the years ended December 31, 2022, 2021 and 2020 were as follows: 2022 2021 2020 (in thousands) Beginning balance as of January 1 $ 14,465 $ 17,903 $ 21,180 Additions: Tax positions for current year 1,398 1,417 1,082 Tax positions for prior years 13 30 66 Reductions: Tax positions for prior years (56 ) (1,639 ) (2,989 ) Expiration of statutes (212 ) (3,246 ) (1,436 ) Ending balance as of December 31 $ 15,608 $ 14,465 $ 17,903

Operating Segment, Geographic_2

Operating Segment, Geographic and Significant Customer Information (Tables)	12 Months Ended
	Dec. 31, 2022
Segment Information	Segment information for the years ended December 31, 2022, 2021, and 2020 is as follows: Semiconductor Test System Test Robotics Wireless Test Corporate and Consolidated (in thousands) 2022 Revenues $ 2,080,590 $ 469,346 $ 403,138 $ 201,720 $ 251 $ 3,155,045 Income (loss) before taxes (1)(2) 634,488 166,879 (16,244 ) 66,820 (11,558 ) 840,385 Total assets (3) 1,382,623 165,925 665,638 94,298 1,192,768 3,501,252 Property additions 126,898 7,275 25,712 3,364 — 163,249 Depreciation and amortization expense 76,532 3,235 25,339 4,991 578 110,675 2021 Revenues $ 2,642,342 $ 467,739 $ 375,905 $ 216,895 $ — $ 3,702,881 Income (loss) before taxes (1)(2) 976,988 163,064 (8,167 ) 83,543 (54,473 ) 1,160,955 Total assets (3) 1,245,596 170,954 701,196 107,513 1,584,166 3,809,425 Property additions 115,618 3,905 9,821 3,128 — 132,472 Depreciation and amortization expense 75,982 3,156 27,336 6,055 12,956 125,485 2020 Revenues $ 2,259,597 $ 409,729 $ 279,731 $ 173,016 $ (604 ) $ 3,121,469 Income (loss) before 739,695 152,092 (24,019 ) 41,950 (8,703 ) 901,015 Total assets (3) 1,070,378 138,295 712,936 106,273 1,624,464 3,652,346 Property additions 168,055 3,092 8,899 4,931 — 184,977 Depreciation and amortization expense 64,998 3,426 36,242 6,258 15,819 126,743 (1) Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), intercompany eliminations, pension and postretirement plan actuarial gains (losses), legal and environmental fees, contingent consideration adjustments, acquisition related charges and compensation and loss on convertible debt conversions in 2021. (2) Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and loss on convertible debt conversions in 2021. (3) Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.
Schedule of Segment Reporting Information by Segment Charges	Included in each segment are charges and credits in the following line items in the statements of operations: For the Years Ended December 31, 2022 2021 2020 (in thousands) Semiconductor Test: Cost of revenues—inventory charge $ 21,456 $ 6,661 $ 11,013 Contract termination settlement fee — — 4,000 System Test: Cost of revenues—inventory charge $ 1,730 $ 641 $ 887 Robotics: Cost of revenues—inventory charge $ 3,668 $ 6,403 $ 834 Restructuring and other—employee severance 2,115 1,210 1,584 Restructuring and other—acquisition related expenses and compensation — 1,000 985 Wireless Test: Cost of revenues—inventory charge $ 4,598 $ 1,770 $ 4,800 Corporate and Eliminations: Restructuring and other—legal settlement charge $ 14,700 $ 12,000 $ — Restructuring and other— environmental and legal liabilities 2,700 1,971 — Restructuring and other—gain on sale of asset (3,410 ) — — Other (income) expense, net—loss on convertible debt conversion — 28,828 — Restructuring and other—AutoGuide contingent consideration adjustment — (7,227 ) (19,724 ) Restructuring and other—MiR contingent consideration adjustment — — (3,546 ) Restructuring and other—acquisition related expenses and compensation — (513 ) 1,728 Selling and administrative—equity modification charge — — 766
Revenues by Country	Information as to Teradyne’s revenues by country is as follows: 2022 2021 2020 (in thousands) Revenues from customers (1): Taiwan $ 626,424 $ 1,117,874 $ 1,178,068 Korea 544,816 502,167 391,571 China 491,798 631,963 465,722 United States 469,948 392,626 321,674 Europe 268,384 259,954 205,587 Japan 162,920 166,231 143,983 Malaysia 142,203 136,774 56,096 Thailand 137,356 138,812 138,787 Philippines 124,107 166,838 68,887 Singapore 99,503 121,582 76,460 Rest of the World 87,586 68,060 74,634 $ 3,155,045 $ 3,702,881 $ 3,121,469 (1) Revenues attributable to a country are based on location of customer site.
Long-Lived Assets by Geographic Area	United States Foreign Total (in thousands) December 31, 2022 $ 328,341 $ 164,076 $ 492,417 December 31, 2021 $ 308,438 $ 147,609 $ 456,047

Accounting Policies - Additiona

Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Retained earnings		$ 725,729	$ 736,566
Standard warranty period		12 months
Depreciation over life to cost of revenues and selling and administrative expenses, years		6 years
Net book value of internally manufactured test systems sold		$ 6,600	16,600	$ 7,300
Advertising costs		17,300	13,400	12,800
Losses (gains) on foreign currency transactions		10,800	(2,100)	$ 2,600
Trade Accounts Receivable		93,900	111,300
Debt		0	89,244
Retained earnings	$ 1,800
Mezzanine equity		0	1,512
Additional paid-in capital		$ 1,755,963	$ 1,811,545
Teradyne [Member]
Summary Of Significant Accounting Policies [Line Items]
Retained earnings	94,600
Current debt	1,400
Debt	6,600
Mezzanine equity	100,800
Additional paid-in capital	100,800
Teradyne [Member] | Accounting Standards Update 2020-06 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Mezzanine equity	$ 0

Deferred Revenue and Customer A

Deferred Revenue and Customer Advances (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Revenue Arrangement
Maintenance, service and training	$ 78,089	$ 81,826
Customer advances, undelivered elements and other	59,147	55,112
Extended warranty	56,180	64,168	$ 51,929	$ 30,677
Total deferred revenue and customer advances	$ 193,416	$ 201,106

Warranty Accrual Included in Ot

Warranty Accrual Included in Other Accrued Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Product Warranty Liability [Line Items]
Balance at beginning of period	$ 24,577	$ 16,633	$ 8,996
Accruals for warranties issued during the period	21,851	35,727	28,490
Accruals related to pre-existing warranties	(5,618)	(6,846)	821
Settlements made during the period	(26,629)	(20,937)	(21,674)
Balance at end of period	$ 14,181	$ 24,577	$ 16,633

Extended Product Warranty of Sh

Extended Product Warranty of Short and Long-Term Deferred Revenue and Customer Advances (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Product Warranty Liability [Line Items]
Balance at beginning of period	$ 64,168	$ 51,929	$ 30,677
Deferral of new extended warranty revenue	33,686	43,597	41,694
Recognition of extended warranty deferred revenue	(41,674)	(31,358)	(20,442)
Balance at end of period	$ 56,180	$ 64,168	$ 51,929

Schedule of Prepayments and Oth

Schedule of Prepayments and Other Current Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Prepaid And Other Current Assets [Line Items]
Contract manufacturer and supplier prepayments	$ 491,105	$ 364,478
Prepaid taxes	18,625	15,090
Prepaid maintenance and other services	14,545	13,660
Other prepayments	8,687	13,038
Total prepayments	$ 532,962	$ 406,266

Useful Lives of Assets (Detail)

Useful Lives of Assets (Detail)	12 Months Ended
	Dec. 31, 2022
Buildings
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	40 years
Building Improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	5 years
Building Improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	10 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Useful lives, description	Lesser of lease term or 10 years
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	10 years
Test Systems Manufactured Internally
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	6 years
Machinery Equipment And Software | Minimum
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	3 years
Machinery Equipment And Software | Maximum
Property, Plant and Equipment [Line Items]
Useful lives, maximum years	5 years

Investments in Other Company -

Investments in Other Company - Additional Information (Detail) - MachinemetricsInc [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Jun. 01, 2021
Business Acquisition [Line Items]
Equity Method Investments		$ 12
Long-term Investments	$ 12
Unrealized Gain (Loss) on Investments	$ 0

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred Revenue And Customer Advances	$ 112.4	$ 102.5	$ 91
Revenue, Remaining Performance Obligation, Amount	$ 1,235.2
Short-term Contract with Customer [Member]
Revenue, Remaining Performance Obligation, Percentage	89%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Period	12 months
Long-term Contract with Customer [Member]
Revenue, Remaining Performance Obligation, Percentage	11%
Long-term Contract with Customer [Member] | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Period	3 years
Long-term Contract with Customer [Member] | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Period	1 year

Disaggregated Revenue by Primar

Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total	[1],[2]	$ 3,155,045	$ 3,702,881	$ 3,121,469
Semiconductor Test
Disaggregation of Revenue [Line Items]
Total		2,080,590	2,642,342	2,259,597
System Test
Disaggregation of Revenue [Line Items]
Total	[1]	469,346	467,739	409,729
Robotics
Disaggregation of Revenue [Line Items]
Total		403,138	375,905	279,731
Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	201,720	216,895	173,016
Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Total	[1]	251		(604)
Point in Time
Disaggregation of Revenue [Line Items]
Total	[1]	2,772,622	3,335,446	2,804,167
Point in Time | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	402,074	409,383	348,454
Point in Time | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	189,040	204,247	163,834
Point in Time | Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Total	[1]	251		(604)
Over Time
Disaggregation of Revenue [Line Items]
Total	[1]	382,423	367,435	317,302
Over Time | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	67,272	58,356	61,275
Over Time | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	12,680	12,648	9,182
Americas
Disaggregation of Revenue [Line Items]
Total	[1]	475,619	405,736	335,442
Americas | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	146,040	135,230	128,482
Americas | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	47,350	36,173	22,544
Americas | Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Total	[1]	251		(604)
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total	[1]	279,515	265,764	208,196
Europe, Middle East and Africa | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	28,956	25,697	22,726
Europe, Middle East and Africa | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	13,603	8,619	6,503
Asia Pacific
Disaggregation of Revenue [Line Items]
Total	[1]	2,399,911	3,031,381	2,577,831
Asia Pacific | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	294,350	306,812	258,521
Asia Pacific | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	140,767	172,103	143,969
SOC | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,706,884	2,246,730	1,877,389
SOC | Point in Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,445,238	1,989,979	1,659,414
SOC | Over Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	261,646	256,751	217,975
SOC | Americas | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	122,575	102,702	77,671
SOC | Europe, Middle East and Africa | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	69,345	67,381	55,125
SOC | Asia Pacific | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,514,964	2,076,647	1,744,593
Memory | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	373,706	395,612	382,208
Memory | Point in Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	344,693	365,441	363,324
Memory | Over Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	29,013	30,171	18,884
Memory | Americas | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	11,987	10,665	12,999
Memory | Europe, Middle East and Africa | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,543	3,503	5,209
Memory | Asia Pacific | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	360,176	381,444	364,000
Universal Robots (UR) | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	325,732	311,182	221,481
Universal Robots (UR) | Point in Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	317,514	305,512	214,212
Universal Robots (UR) | Over Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	8,218	5,670	7,269
Universal Robots (UR) | Americas | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	112,203	94,897	64,164
Universal Robots (UR) | Europe, Middle East and Africa | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	139,599	134,829	97,040
Universal Robots (UR) | Asia Pacific | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	73,930	81,456	60,277
MiR | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	77,406	64,723	58,250
MiR | Point in Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	73,812	60,884	55,533
MiR | Over Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	3,594	3,839	2,717
MiR | Americas | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	35,213	26,069	30,186
MiR | Europe, Middle East and Africa | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	26,469	25,735	21,593
MiR | Asia Pacific | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	$ 15,724	$ 12,919	$ 6,471
[1]Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”[2]Revenues attributable to a country are based on location of customer site.

Disaggregated Revenue by Prim_2

Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Revenue on leases	$ 8.2	$ 13.2	$ 10

Composition of Inventories, Net

Composition of Inventories, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Inventory Disclosure [Abstract]
Raw materials	$ 256,065	$ 155,641
Work-in-process	37,982	37,740
Finished goods	30,972	49,949
Inventories, net	$ 325,019	$ 243,330

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Inventory [Line Items]
Inventory reserves	$ 136.8	$ 114.1

Property Plant and Equipment, N

Property Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Land	$ 18,481	$ 17,207
Buildings	128,991	126,468
Machinery, equipment and software	1,059,880	994,828
Furniture and fixtures	29,929	28,743
Leasehold improvements	64,631	64,110
Construction in progress	22,470	8,105
Property, Plant and Equipment, Gross, Total	1,324,382	1,239,461
Less: accumulated depreciation	905,699	852,221
Property, plant and equipment, net	$ 418,683	$ 387,240

Property, Plant and Equipment -

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Depreciation of property, plant and equipment	$ 90,763	$ 91,073	$ 80,119
Machinery and equipment	1,059,880	994,828
Accumulated depreciation	905,699	852,221
Test Systems Leased By Customers
Property, Plant and Equipment [Line Items]
Machinery and equipment	5,800	13,400
Accumulated depreciation	$ 5,600	$ 8,700

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Mar. 25, 2022	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financial Instruments and Fair Value [Line Items]
Available-for-sale securities, realized gain			$ 0.8	$ 3.1	$ 4.6
Available-for-sale securities, realized loss			1	0	0.3
Fair market value of investments with unrealized losses greater than one year			33.4	6.5
Fair market value of investments with unrealized losses less than one year			66.3	85.4
Unrealized Gain (loss) on contracts			10.8	(2.1)	2.6
Equity securities unrealized gain			1.9	5.1	9.6
Equity securities unrealized loss			11.6	$ 1.8	$ 6
Cash Flow Hedging [Member]
Financial Instruments and Fair Value [Line Items]
Other comprehensive income (Loss), cash flow hedge, gain (loss), before reclassification, after tax			$ 3.2
Accounts Receivable | Customer 2 | Minimum
Financial Instruments and Fair Value [Line Items]
Concentration risk, percentage			10%	10%
Debt Mutual Funds
Financial Instruments and Fair Value [Line Items]
Available for sale securities with out contractual maturity date			$ 6.6
Auto Guide Llc [Member] | Dispute In Respect Of Contingent Consideration [Member]
Financial Instruments and Fair Value [Line Items]
Litigation Settlement, Amount settled between parties	$ 26.7	$ 26.7
Foreign Exchange Contracts
Financial Instruments and Fair Value [Line Items]
Unrealized Gain (loss) on contracts			$ 0.9	$ 0.1

Schedule of Fair Value of Finan

Schedule of Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	$ 112,871	$ 338,836
U.S. Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	39,649	77,789
Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	7,159	189,620
Corporate Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	50,856	56,901
Certificates of Deposit and Time Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	1,740	1,356
U.S. Government Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	6,352	4,610
Debt Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	6,580	7,971
Non-U.S. Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	535	589
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total	1,005,162	1,500,288
Derivative assets	86	92
Total	1,005,248	1,500,380
Derivative liabilities	4,215	118
Total	4,215	118
Fair Value, Measurements, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	632,417	628,740
Fair Value, Measurements, Recurring | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	222,356	493,459
Fair Value, Measurements, Recurring | U.S. Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	39,649	77,789
Fair Value, Measurements, Recurring | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	7,159	189,620
Fair Value, Measurements, Recurring | Corporate Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	50,856	56,901
Fair Value, Measurements, Recurring | Certificates of Deposit and Time Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	1,740	1,356
Fair Value, Measurements, Recurring | U.S. Government Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	6,352	4,610
Fair Value, Measurements, Recurring | Debt Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	6,580	7,971
Fair Value, Measurements, Recurring | Non-U.S. Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	535	589
Fair Value, Measurements, Recurring | Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale equity securities	37,518	39,253
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total	838,282	1,088,176
Derivative assets	0	0
Total	838,282	1,088,176
Derivative liabilities	0	0
Total	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	632,417	628,740
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	161,767	412,212
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | U.S. Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Corporate Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Certificates of Deposit and Time Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | U.S. Government Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Debt Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	6,580	7,971
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Non-U.S. Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Fair Value, Measurements, Recurring | Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale equity securities	37,518	39,253
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total	166,880	412,112
Derivative assets	86	92
Total	166,966	412,204
Derivative liabilities	4,215	118
Total	4,215	118
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	60,589	81,247
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | U.S. Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	39,649	77,789
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	7,159	189,620
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Corporate Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	50,856	56,901
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Certificates of Deposit and Time Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	1,740	1,356
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | U.S. Government Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	6,352	4,610
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Debt Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Non-U.S. Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	535	589
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total	0	0
Derivative assets	0	0
Total	0	0
Derivative liabilities	0	0
Total	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | U.S. Treasury Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Commercial Paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Corporate Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Certificates of Deposit and Time Deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | U.S. Government Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Debt Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Non-U.S. Government Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring | Mutual Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available for sale equity securities	$ 0	$ 0

Schedule of Reported Financial

Schedule of Reported Financial Assets and Liabilities (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	$ 1,005,248	$ 1,500,380
Liabilities	4,215	118
Other Current Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Liabilities	4,215	118
Cash and Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	854,773	1,122,199
Marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	39,612	244,231
Long-term marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	110,777	133,858
Prepayments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	86	92
Quoted Prices in Active Markets for Identical Instruments (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	838,282	1,088,176
Liabilities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Other Current Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Liabilities	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Cash and Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	794,184	1,040,952
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	0	0
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Long-term marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	44,098	47,224
Quoted Prices in Active Markets for Identical Instruments (Level 1) | Prepayments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	166,966	412,204
Liabilities	4,215	118
Significant Other Observable Inputs (Level 2) | Other Current Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Liabilities	4,215	118
Significant Other Observable Inputs (Level 2) | Cash and Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	60,589	81,247
Significant Other Observable Inputs (Level 2) | Marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	39,612	244,231
Significant Other Observable Inputs (Level 2) | Long-term marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	66,679	86,634
Significant Other Observable Inputs (Level 2) | Prepayments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	86	92
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	0	0
Liabilities	0	0
Significant Unobservable Inputs (Level 3) | Other Current Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Liabilities	0	0
Significant Unobservable Inputs (Level 3) | Cash and Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	0	0
Significant Unobservable Inputs (Level 3) | Marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	0	0
Significant Unobservable Inputs (Level 3) | Long-term marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	0	0
Significant Unobservable Inputs (Level 3) | Prepayments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets	$ 0	$ 0

Schedule of Changes in Fair Val

Schedule of Changes in Fair Value of Level 3 Contingent Consideration (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 0	$ 7,227
Fair value adjustment	0	(7,227)	[1]
Balance at end of period	$ 0	$ 0
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Net Income (Loss) Attributable to Parent
[1]During the year ended December 31, 2021, the fair value of contingent consideration for the earn-outs in connection with the acquisition of AutoGuide was reduced to zero, which resulted in a benefit of $7.2 million, primarily due to a decrease in forecasted revenues and earnings before interest and taxes.

Schedule of Changes in Fair V_2

Schedule of Changes in Fair Value of Level 3 Contingent Consideration (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Increase (decrease) in contingent consideration	$ 0	$ (7,227)	$ (23,271)
Auto Guide Llc [Member] | Dispute In Respect Of Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Increase (decrease) in contingent consideration		$ 7,200

Schedule of Carrying Amounts an

Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Marketable securities		$ 112,871	$ 338,836
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash and cash equivalents		854,773	1,122,199
Marketable securities		150,389	378,089
Derivative assets		86	92
Derivative liabilities		4,215	118
Convertible debt	[1]	$ 50,115	$ 108,426
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Deferred Tax and Other Liabilities, Noncurrent	Deferred Tax and Other Liabilities, Noncurrent
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets, Noncurrent	Other Assets, Noncurrent
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Cash and cash equivalents		$ 854,773	$ 1,122,199
Marketable securities		150,389	378,089
Derivative assets		86	92
Derivative liabilities		4,215	118
Convertible debt	[1]	$ 139,007	$ 604,648
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Deferred Tax and Other Liabilities, Noncurrent	Deferred Tax and Other Liabilities, Noncurrent
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other Assets, Noncurrent	Other Assets, Noncurrent
[1]The carrying value represents the bifurcated debt component only, while the fair value is based on quoted market prices for the convertible note which includes the equity conversion features.

Schedule of Available for Sale

Schedule of Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 123,839	$ 334,077
Available-for-sale marketable securities, Unrealized Gain	73	5,477
Available-for-sale marketable securities, Unrealized (Loss)	(11,041)	(718)
Available-for-sale marketable securities, Fair Market Value	112,871	338,836
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	99,763	91,937
U.S. Treasury Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	44,030	77,707
Available-for-sale marketable securities, Unrealized Gain		551
Available-for-sale marketable securities, Unrealized (Loss)	(4,381)	(470)
Available-for-sale marketable securities, Fair Market Value	39,649	77,789
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	39,649	46,435
Commercial Paper
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	7,089	189,614
Available-for-sale marketable securities, Unrealized Gain	70	15
Available-for-sale marketable securities, Unrealized (Loss)		(9)
Available-for-sale marketable securities, Fair Market Value	7,159	189,620
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses		22,784
Corporate Debt Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	57,006	52,266
Available-for-sale marketable securities, Unrealized Gain	3	4,863
Available-for-sale marketable securities, Unrealized (Loss)	(6,153)	(227)
Available-for-sale marketable securities, Fair Market Value	50,856	56,901
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	50,667	19,422
Debt Mutual Funds
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	6,997	7,928
Available-for-sale marketable securities, Unrealized Gain		43
Available-for-sale marketable securities, Unrealized (Loss)	(417)
Available-for-sale marketable securities, Fair Market Value	6,580	7,971
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	3,095
U.S. Government Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	6,442	4,617
Available-for-sale marketable securities, Unrealized Gain		5
Available-for-sale marketable securities, Unrealized (Loss)	(90)	(12)
Available-for-sale marketable securities, Fair Market Value	6,352	4,610
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	6,352	3,296
Certificates of Deposit and Time Deposits
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	1,740	1,356
Available-for-sale marketable securities, Fair Market Value	1,740	1,356
Non-U.S. Government Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	535	589
Available-for-sale marketable securities, Fair Market Value	$ 535	$ 589

Schedule Of Foreign Currency Ca

Schedule Of Foreign Currency Cash Flow Hedges (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Asset, Notional amounts	$ 2.9	$ 41
Japan, Yen
Derivative Liability, Notional amounts	(37.1)	(31.4)
Taiwan, New Dollars
Derivative Liability, Notional amounts	(29.2)	(35.1)
Short [Member]
Derivative Asset, Notional amounts	76.8	113.5
Long [Member]
Derivative Liability, Notional amounts	(73.9)	(72.5)
Long [Member] | Japan, Yen
Derivative Liability, Notional amounts	(37.1)	(31.4)
Long [Member] | Taiwan, New Dollars
Derivative Liability, Notional amounts	(29.2)	(35.1)
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount	43.2	0
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member] | Japan, Yen
Derivative, Notional Amount	37.8	0
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member] | Taiwan, New Dollars
Derivative, Notional Amount	5.4	0
Foreign Exchange Forward [Member] | Short [Member] | Cash Flow Hedging [Member]
Derivative Asset, Notional amounts	72.1	0
Foreign Exchange Forward [Member] | Short [Member] | Cash Flow Hedging [Member] | Japan, Yen
Derivative Asset, Notional amounts	61.2	0
Foreign Exchange Forward [Member] | Short [Member] | Cash Flow Hedging [Member] | Taiwan, New Dollars
Derivative Asset, Notional amounts	10.9	0
Foreign Exchange Forward [Member] | Long [Member] | Cash Flow Hedging [Member]
Derivative Liability, Notional amounts	(28.9)	0
Foreign Exchange Forward [Member] | Long [Member] | Cash Flow Hedging [Member] | Japan, Yen
Derivative Liability, Notional amounts	(23.4)	0
Foreign Exchange Forward [Member] | Long [Member] | Cash Flow Hedging [Member] | Taiwan, New Dollars
Derivative Liability, Notional amounts	$ (5.5)	$ 0

Schedule of Reported Available

Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 123,839	$ 334,077
Available-for-sale marketable securities, Unrealized Gain	73	5,477
Available-for-sale marketable securities, Unrealized (Loss)	(11,041)	(718)
Available-for-sale marketable securities, Fair Market Value	112,871	338,836
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	99,763	91,937
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	39,950	244,213
Available-for-sale marketable securities, Unrealized Gain	70	64
Available-for-sale marketable securities, Unrealized (Loss)	(408)	(46)
Available-for-sale marketable securities, Fair Market Value	39,612	244,231
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	30,713	54,798
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	83,889	89,864
Available-for-sale marketable securities, Unrealized Gain	3	5,413
Available-for-sale marketable securities, Unrealized (Loss)	(10,633)	(672)
Available-for-sale marketable securities, Fair Market Value	73,259	94,605
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 69,050	$ 37,139

Contractual Maturities of Inves

Contractual Maturities of Investments in Debt Securities Held (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Schedule of Available-for-sale Securities
Due within one year, cost	$ 39,950
Due after 1 year through 5 years, cost	33,045
Due after 5 years through 10 years, cost	4,782
Due after 10 years, cost	39,065
Total, cost	116,842
Due within one year, fair market value	39,612
Due after 1 year through 5 years, fair market value	31,466
Due after 5 years through 10 years, fair market value	4,232
Due after 10 years, fair maket value	30,981
Total, fair market value	$ 106,291

Schedule of Notional Amount of

Schedule of Notional Amount of Derivatives (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	$ 2.9	$ 41
Buy Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(73.9)	(72.5)
Sell Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	76.8	113.5
Japanese Yen
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(37.1)	(31.4)
Japanese Yen | Buy Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(37.1)	(31.4)
Taiwan Dollar
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(29.2)	(35.1)
Taiwan Dollar | Buy Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(29.2)	(35.1)
Korean Won
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(6.4)	(4.2)
Korean Won | Buy Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(6.4)	(4.2)
British Pound Sterling
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(1.2)	(1.8)
British Pound Sterling | Buy Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Liability, Notional amounts	(1.2)	(1.8)
Euro
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	38.4	44.9
Euro | Sell Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	38.4	44.9
Singapore Dollar
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	33.5	61.9
Singapore Dollar | Sell Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	33.5	61.9
Philippines, Pesos
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	2.7	3.9
Philippines, Pesos | Sell Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	2.7	3.9
China, Yuan Renminbi
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	2.2	2.8
China, Yuan Renminbi | Sell Position
Intercompany Foreign Currency Balance [Line Items]
Derivative Asset, Notional amounts	$ 2.2	$ 2.8

Schedule of Derivative Instrume

Schedule of Derivative Instruments in Statement of Financial Position at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative assets (liabilities), net	$ (4,129)	$ (26)
Not Designated as Hedging Instrument | Foreign currency forward contracts | Prepayments
Derivatives, Fair Value [Line Items]
Derivative assets	86	92
Not Designated as Hedging Instrument | Foreign currency forward contracts | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	(990)	$ (118)
Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member] | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ (3,225)

Schedule of Effect of Derivativ

Schedule of Effect of Derivative Instruments in Statement of Operations Recognized (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ (2,733)	$ 6,488	$ 3,515
Other (income) expense, net | Not Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Losses (Gains) on derivatives recognized in statements of operations	(2,482)	6,488	3,515
Sales [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Option [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ (251)	$ 0	$ 0

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total lease expense	$ 40.1	$ 39.2	$ 38.5
Variable lease costs	14.1	12.6	12.1
Short-term leases	$ 2	$ 1.8	$ 3.4
Operating Lease, Weighted Average Remaining Lease Term	5 years 10 months 24 days	5 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	4.70%	4.10%

Supplemental Cash Flow Informat

Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities included in operating cash flows:	$ 20,775	$ 24,593	$ 24,136
Right-of-use assets obtained in exchange for new lease obligations	$ 26,149	$ 34,246	$ 14,801

Schedule of Operating Lease, Ma

Schedule of Operating Lease, Maturity (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
2023	$ 20,120
2024	18,239
2025	15,308
2026	10,635
2027	8,117
Thereafter	17,963
Total lease payments	90,382
Less imputed interest	(7,612)
Total lease liabilities	$ 82,770

Debt - Additional Information (

Debt - Additional Information (Detail) $ / shares in Units, $ in Thousands			3 Months Ended	12 Months Ended
	Feb. 23, 2022 USD ($)	Dec. 12, 2016 USD ($) Day $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Oct. 05, 2022 USD ($)	Jan. 01, 2022 USD ($)	Oct. 03, 2021 $ / shares	May 01, 2020 USD ($)
Debt Instrument
Repurchase of common stock				$ 752,082	$ 600,000	$ 88,465
Trading days measurement period | Day		5
Debt issuance costs, amortization period				7 years
Line of Credit Facility, Maximum Borrowing Capacity							$ 750,000			$ 400,000
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases			$ 200,000	$ 200,000
Line of Credit Facility, Interest Rate Description				The interest rate applicable to loans under the Credit Facility are, at Teradyne’s option, equal to either a base rate plus a margin ranging from 0.00% to 0.75% per annum or SOFR plus a margin ranging from 1.10% to 1.85% per annum, based on the consolidated leverage ratio of Teradyne. In addition, Teradyne will pay a commitment fee on the unused portion of the commitments under the Credit Facility ranging from 0.15% to 0.25% per annum, based on the then applicable consolidated leverage ratio.
Term of revolving credit facility										3 years
Debt instrument conversion converted instrument amount					343,000
Mezzanine equity			0	$ 0	1,512
Expected principal interest payments in next 12 months			400	$ 400
Available Incremental Amount Under The Credit Facility Not To Exceed Percentage Of Consolidated EBIDTA				15%
Convertible common shares				$ 66,800
Current debt, Conversion			50,115	50,115	19,182
Deferred Tax Assets, Other			2,520	2,520	774
Debt			0	0	89,244
Retained earnings			725,729	725,729	736,566
Other Income Expense [Member]
Debt Instrument
Gain loss on debt conversion					$ 28,800
Convertible Common Shares [Member]
Debt Instrument
Mezzanine equity			15,100	15,100
Stock Issued During Period, Value, Stock Options Exercised				$ 1,500
Collateral Pledged [Member]
Debt Instrument
Line of Credit Facility, Interest Rate Description				65
1.25% Convertible Senior Unsecured Notes Due December 15, 2023
Debt Instrument
Aggregate principal amount		$ 460,000	$ 460,000	$ 460,000
Debt instrument, interest rate, stated percentage		1.25%
Debt instrument, net proceeds after issuance costs		$ 450,800
Payment for net cost of convertible note hedges net of warrant proceeds		33,000		$ 33,000
Repurchase of common stock		$ 50,100
Repurchase of stock, shares | shares		2,000,000
Senior notes maturity date		Dec. 15, 2023
Debt instrument, frequency of periodic payment		payable semiannually in arrears on June 15 and December 15 of each year
Debt instrument, date of first required payment		Mar. 31, 2017
Debt instrument, conversion option expiration date		Sep. 15, 2023
Consecutive trading days measurement period | Day		5
Debt instrument conversion price | $ / shares		$ 31.46	$ 31.46	$ 31.46					$ 31.46
Shares that would be issued upon conversion | shares			1,600,000	14,600,000
Strike price per share of warrant | $ / shares				$ 39.48
Debt instrument, convertible, carrying amount of equity component			$ 100,800	$ 100,800
Financing cost			$ 100	100
Value of notes converted				$ 139,500
Debt instrument conversion converted instrument amount	$ 424,900
1.25% Convertible Senior Unsecured Notes Due December 15, 2023 | Conversion option one
Debt Instrument
Trading days measurement period | Day		20
Consecutive trading days measurement period | Day		30
Percentage of conversion price		130%
1.25% Convertible Senior Unsecured Notes Due December 15, 2023 | Conversion option two
Debt Instrument
Aggregate principal amount		$ 1,000
Percentage of closing sale price of common stock and conversion rate product		98%
Revolving Credit Facility | Maximum | Truist Bank [Member]
Debt Instrument
Commitment fee percentage of unused portion of credit facility				0.25%
Revolving Credit Facility | Minimum | Truist Bank [Member]
Debt Instrument
Commitment fee percentage of unused portion of credit facility				0.15%
Revolving Credit Facility | Base Rate | Maximum | Truist Bank [Member]
Debt Instrument
Debt instrument, basis spread on variable rate				0.75%
Revolving Credit Facility | Base Rate | Minimum | Truist Bank [Member]
Debt Instrument
Debt instrument, basis spread on variable rate				0%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum | Truist Bank [Member]
Debt Instrument
Debt instrument, basis spread on variable rate				1.85%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum | Truist Bank [Member]
Debt Instrument
Debt instrument, basis spread on variable rate				1.10%
Teradyne [Member]
Debt Instrument
Mezzanine equity								$ 100,800
Current debt, Conversion								1,400
Debt								6,600
Retained earnings								94,600
Teradyne [Member] | Accounting Standards Update 2020-06 [Member]
Debt Instrument
Deferred Tax Assets, Other								1,800
Teradyne [Member] | Accounting Standards Update 2020-06 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member]
Debt Instrument
Mezzanine equity								$ 0

Components of Convertible Senio

Components of Convertible Senior Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument
Current debt	$ 50,115	$ 19,182
Long-term debt	0	89,244
Net carrying amount of convertible debt	50,115	108,426
Convertible Senior Notes [Member]
Debt Instrument
Debt principal	50,228	116,980
Unamortized debt issuance fees	113	8,554
Net carrying amount of convertible debt	$ 50,115	$ 108,426

Interest Expense on Convertible

Interest Expense on Convertible Senior Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument
Contractual interest expense on the coupon	$ 732	$ 3,009
Amortization of the discount component and debt issue fees recognized as interest expense	209	11,019
Total interest expense on the convertible debt	$ 941	$ 14,028

Interest Expense on Convertib_2

Interest Expense on Convertible Senior Notes (Parenthetical) (Detail) $ in Millions	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Unamortized debt discount	$ 8

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 2,562,444	$ 2,207,018	$ 1,480,158
Other comprehensive (loss) income	(43,920)	(39,464)	52,370
Balance	2,451,294	2,562,444	2,207,018
Foreign Currency Translation Reclassification Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(10,818)	25,389
Other comprehensive loss before reclassifications, net of tax	(29,031)	(36,207)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0	0
Other comprehensive (loss) income	(29,031)	(36,207)
Balance	(39,849)	(10,818)	25,389
Unrealized Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	3,704	6,954
Other comprehensive loss before reclassifications, net of tax	(12,666)	(2,255)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	301	(995)
Other comprehensive (loss) income	(12,365)	(3,250)
Balance	(8,661)	3,704	6,954
Unrealized Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	0	0
Other comprehensive loss before reclassifications, net of tax	(2,517)	0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0	0
Other comprehensive (loss) income	(2,517)	0
Balance	(2,517)	0	0
Amortization of Prior Service Credit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	1,166	1,173
Other comprehensive loss before reclassifications, net of tax	0	0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(7)	(7)	(7)
Other comprehensive (loss) income	(7)	(7)
Balance	1,159	1,166	1,173
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(5,948)	33,516	(18,854)
Other comprehensive loss before reclassifications, net of tax	(44,214)	(38,462)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	294	(1,002)	(2,372)
Other comprehensive (loss) income	(43,920)	(39,464)	52,370
Balance	$ (49,868)	$ (5,948)	$ 33,516

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss), tax	$ 23	$ (279)	$ (667)
Foreign currency translation adjustments, tax	0	0	0
Unrealized (losses) gains on marketable securities, tax	(2,308)	1,055	1,910
Unrealized Losses on Cash Flow Hedges	(708)	0	0
Retirement plans prior service benefit, tax	(1,130)	(1,128)	(1,126)
Foreign Currency Translation Reclassification Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications, tax	0	0
Amounts reclassified from accumulated other comprehensive income (loss), tax	0	0
Other comprehensive income (loss), tax	0	0
Unrealized (Losses) Gains on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications, tax	(3,388)	(578)
Amounts reclassified from accumulated other comprehensive income (loss), tax	25	(277)	(665)
Other comprehensive income (loss), tax	(3,363)	(855)
Unrealized Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications, tax	(708)	0
Amounts reclassified from accumulated other comprehensive income (loss), tax	0	0
Other comprehensive income (loss), tax	(708)	0
Amortization of Prior Service Credit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications, tax	0	0
Amounts reclassified from accumulated other comprehensive income (loss), tax	(2)	(2)	$ (2)
Other comprehensive income (loss), tax	$ (2)	$ (2)

Reclassifications Out of Accumu

Reclassifications Out of Accumulated Other Comprehensive Income (Loss) to Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income (expense)	$ (301)	$ 995	$ 2,365
Unrealized Gains on Marketable Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income (expense)	(301)	995	2,365
Reclassifications, net of tax	(301)	995
Amortization of Prior Service Credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, net of tax	7	7	7
Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, net of tax	$ (294)	$ 1,002	$ 2,372

Reclassifications Out of Accu_2

Reclassifications Out of Accumulated Other Comprehensive Income (Loss) to Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, tax	$ (23)	$ 279	$ 667
Unrealized (Losses) Gains on Marketable Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, tax	(25)	277	665
Amortization of Prior Service Credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, tax	$ 2	$ 2	$ 2

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill, Impairment Loss	$ 0
Acquired intangible assets amortization		$ 19,333	$ 21,456	$ 30,803

Changes in Carrying Amount of G

Changes in Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Goodwill [Line Items]
Goodwill	$ 1,188,590	$ 1,216,425	$ 1,165,761
Accumulated impairment losses	(762,566)	(762,566)	(762,566)
Foreign currency translation adjustment	(22,829)	(27,835)
Total Goodwill	426,024	453,859	403,195
Robotics
Goodwill [Line Items]
Goodwill	405,971	433,752	383,166
Foreign currency translation adjustment	(22,805)	(27,781)
Total Goodwill	405,971	433,752	383,166
Wireless Test
Goodwill [Line Items]
Goodwill	361,819	361,819	361,819
Accumulated impairment losses	(353,843)	(353,843)	(353,843)
Foreign currency translation adjustment		0
Total Goodwill	7,976	7,976	7,976
Semiconductor Test
Goodwill [Line Items]
Goodwill	262,101	262,155	262,077
Accumulated impairment losses	(260,540)	(260,540)	(260,540)
Foreign currency translation adjustment	(24)	(54)
Total Goodwill	1,561	1,615	1,537
System Test
Goodwill [Line Items]
Goodwill	158,699	158,699	158,699
Accumulated impairment losses	(148,183)	(148,183)	(148,183)
Foreign currency translation adjustment		0
Total Goodwill	$ 10,516	$ 10,516	$ 10,516

Schedule of Amortizable Intangi

Schedule of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 388,093	$ 389,673
Accumulated Amortization	(327,324)	(309,571)
Foreign Currency Translation Adjustment	(7,291)	(4,467)
Net Carrying Amount	53,478	75,635
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	270,967	272,547
Accumulated Amortization	(234,208)	(223,413)
Foreign Currency Translation Adjustment	(5,935)	(4,093)
Net Carrying Amount	30,824	45,041
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	57,739	57,739
Accumulated Amortization	(51,186)	(48,921)
Foreign Currency Translation Adjustment	172	209
Net Carrying Amount	6,725	9,027
Trademarks and tradenames
Finite-Lived Intangible Assets
Gross Carrying Amount	59,387	59,387
Accumulated Amortization	(41,930)	(37,237)
Foreign Currency Translation Adjustment	(1,528)	(583)
Net Carrying Amount	$ 15,929	$ 21,567

Schedule of Amortizable Intan_2

Schedule of Amortizable Intangible Assets (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Finite-Lived Intangible Assets
Impairment of intangible assets	$ 1.6

Schedule of Estimated Intangibl

Schedule of Estimated Intangible Asset Amortization Expense (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Finite-Lived Intangible Assets
2023	$ 18,835
2024	18,527
2025	11,230
2026	2,350
2027	1,134
Thereafter	$ 1,402

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions			1 Months Ended	12 Months Ended
	Mar. 25, 2022	Mar. 08, 2021	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Purchase Commitment, Excluding Long-term Commitment
Aggregate purchase commitments				$ 654.8
Purchase commitments less than one year				570.3
Product warranty accrual				14.2	$ 24.6
Revenue deferrals related to extended warranties				$ 56.2	$ 64.2
Auto Guide Llc [Member] | Dispute In Respect Of Contingent Consideration [Member]
Purchase Commitment, Excluding Long-term Commitment
Legal claims, damage sought by party		$ 106.9
Litigation Settlement, Amount settled between parties	$ 26.7		$ 26.7

Computation of Basic and Dilute

Computation of Basic and Diluted Net Income Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Income Loss Per Common Share
Net income for basic and diluted net income per share		$ 715,501	$ 1,014,589	$ 784,147
Weighted average common shares-basic		158,434	164,960	166,120
Convertible note hedge warrant shares	[1]	8,806	9,956	6,989
Incremental shares from assumed conversion of convertible notes	[2]	1,763	7,435	8,528
Employee stock purchase rights		22	8	10
Dilutive potential common shares		11,300	18,665	16,922
Weighted average common shares-diluted		169,734	183,625	183,042
Net income per common share-basic		$ 4.52	$ 6.15	$ 4.72
Net income per common share-diluted		$ 4.22	$ 5.53	$ 4.28
Restricted Stock Units
Net Income Loss Per Common Share
Incremental shares attributable to share based payment arrangements		657	1,180	1,264
Stock Options
Net Income Loss Per Common Share
Incremental shares attributable to share based payment arrangements		52	86	131
[1]Convertible notes hedge warrant shares were calculated using the difference between the average Teradyne stock price for the period and the warrant price, multiplied by the number of warrant shares. The result of this calculation, representing the total intrinsic value of the warrant, was divided by the average Teradyne stock price for the period.[2]Incremental shares from the assumed conversion of the convertible notes was calculated using the difference between the average Teradyne stock price for the period and the conversion price, multiplied by the number of convertible notes shares. The result of this calculation, representing the total intrinsic value of the convertible debt, was divided by the average Teradyne stock price for the period.

Net Income Per Common Share - A

Net Income Per Common Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Employee Stock Option [Member]
Net Income Loss Per Common Share
Exercise of stock options	0.1	0.1
Restricted Stock Units (RSUs) [Member]
Net Income Loss Per Common Share
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.4	0.1

Restructuring and Other - Addit

Restructuring and Other - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Mar. 25, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve
Increase Decrease in environmental and legal liabilities		$ 2,700
Severance benefit and charges		2,900
Contingent consideration adjustment		0	$ (7,227)	$ (23,271)
Gains on sale of asset		3,410	0	0
Settled Litigation [Member]
Restructuring Cost and Reserve
Legal settlement charges		14,700
Litigation Settlement, Amount settled between parties			12,000
Gains on sale of asset		$ 3,400
Semiconductor Test
Restructuring Cost and Reserve
Severance benefit and charges				2,300
Contingent consideration adjustment				3,500
Restructuring and other			2,500
Acquisition related costs			500	2,500
Contract termination settlement fee				4,000
Mobile Industrial Robots (MiR)
Restructuring Cost and Reserve
Contingent consideration adjustment			7,200
Semiconductor Test, Industrial Automation and Corporate
Restructuring Cost and Reserve
Restructuring and other				1,200
TER Corporate And Eliminations | Universal Robots (UR)
Restructuring Cost and Reserve
Contingent consideration adjustment			$ 1,500	$ 19,700
TER Corporate And Eliminations | TER Dispute In Respect Of Contingent Consideration [Member]
Restructuring Cost and Reserve
Litigation Settlement, Amount settled between parties	$ 26,700

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure
Fair value of pension plans assets totaled	$ 113,800
UNITED STATES
Defined Benefit Plan Disclosure
Actrual loss on benefit obligations	45,932	$ 6,432
Accumulated benefit obligation for defined benefit pension plans	$ 140,600	$ 187,500
Percentage of expected return on plan assets assumption	2%	2.40%	3%
Discount rate utilized to determine future pension obligations	4.90%	2.60%
Fair value of pension plans assets totaled	$ 111,760	$ 149,578	$ 158,855
Contribution to defined benefit pension plans	3,217	3,276
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Actrual loss on benefit obligations	13,181	2,257
Accumulated benefit obligation for defined benefit pension plans	$ 28,600	$ 42,500
Percentage of expected return on plan assets assumption	4%	3.50%	3.80%
Discount rate utilized to determine future pension obligations	3.50%	1.10%
Fair value of pension plans assets totaled	$ 2,087	$ 2,017	$ 1,856
Contribution to defined benefit pension plans	$ 949	$ 1,022
United States Plans
Defined Benefit Plan Disclosure
Percentage of expected return on plan assets assumption	2%
Discount rate utilized to determine future pension obligations	4.90%	2.60%
Fair value of pension plans assets totaled	$ 111,800
U.S. Supplemental Executive Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans	3,200	$ 3,300
Contribution to defined benefit pension plans in 2018	7,100	3,100
Contribution to defined benefit pension plans in One to Three Years	6,400
Contribution to defined benefit pension plans thereafter	17,400
Non-United States Subsidiaries
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans	900	1,000
Contribution to defined benefit pension plans in 2018	2,300	1,300
Contribution to defined benefit pension plans in One to Three Years	2,100
Contribution to defined benefit pension plans thereafter	7,000
Taiwan Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Fair value of pension plans assets totaled	2,100
German Plan [Member]
Defined Benefit Plan Disclosure
Defined Benefit Plan, decrease in benefit obligation	3,100	3,300
Actrual loss on benefit obligations	59,100	$ 8,700
U.S. Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans in 2018	800
Contribution to defined benefit pension plans in One to Three Years	1,300
Contribution to defined benefit pension plans thereafter	1,300
Contribution to defined benefit pension plans	$ 900

Schedule of Defined Benefit Pen

Schedule of Defined Benefit Pension and Postretirement Benefit Plan Assets and Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure
Ending Balance	$ 113,800
UNITED STATES
Defined Benefit Plan Disclosure
Projected benefit obligation, Beginning of year	192,472	$ 202,233
Service cost	1,588	1,784	$ 1,773
Interest cost	4,886	4,427	5,770
Actuarial (gain) loss	(45,932)	(6,432)
Benefits paid	(9,200)	(9,337)
Liability (gain) loss due to settlement	0	(204)
Non-U.S. currency movement	0	0
Projected benefit obligation, End of year	143,814	192,472	202,233
Beginning Balance	149,578	158,855
Actual return on plan assets	(31,835)	(3,217)
Company contributions	3,217	3,276
Benefits paid	(9,200)	(9,337)
Non-U.S. currency movement	0	0
Ending Balance	111,760	149,578	158,855
Funded status	(32,054)	(42,894)
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Projected benefit obligation, Beginning of year	45,774	50,988
Service cost	784	941	907
Interest cost	482	337	516
Actuarial (gain) loss	(13,181)	(2,257)
Benefits paid	(863)	(925)
Liability (gain) loss due to settlement	0	0
Non-U.S. currency movement	(3,061)	(3,310)
Projected benefit obligation, End of year	29,935	45,774	50,988
Beginning Balance	2,017	1,856
Actual return on plan assets	153	33
Company contributions	949	1,022
Benefits paid	(863)	(925)
Non-U.S. currency movement	(169)	31
Ending Balance	2,087	2,017	1,856
Funded status	(27,848)	(43,757)
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Projected benefit obligation, Beginning of year	7,210	8,515
Service cost	64	64	57
Interest cost	177	170	240
Actuarial (gain) loss	(1,155)	(433)
Benefits paid	(950)	(1,107)
Projected benefit obligation, End of year	5,345	7,210	$ 8,515
Beginning Balance	0
Company contributions	950	1,107
Benefits paid	(950)	(1,107)
Ending Balance	0	0
Funded status	$ (5,345)	$ (7,210)

Schedule of Amounts Recorded wi

Schedule of Amounts Recorded within Statements of Financial Position (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Retirement plans assets	$ 11,761	$ 15,110
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Retirement plans assets	11,761	15,110
Accrued employees' compensation and withholdings	(3,055)	(3,288)
Retirement plans liabilities	(40,760)	(54,716)
Funded status	(32,054)	(42,894)
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Accrued employees' compensation and withholdings	(1,191)	(936)
Retirement plans liabilities	(26,657)	(42,821)
Funded status	(27,848)	(43,757)
Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Accrued employees' compensation and withholdings	(853)	(930)
Retirement plans liabilities	(4,492)	(6,280)
Funded status	$ (5,345)	$ (7,210)

Schedule of Amounts Recognized

Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (loss) (Detail) - Postretirement Benefit Plans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure
Prior service cost, before tax	$ (31)	$ (40)
Deferred taxes	(1,689)	(1,688)
Total recognized in other comprehensive income (loss), net of tax	$ (1,720)	$ (1,728)

Schedule of Pension Plans with

Schedule of Pension Plans with Accumulated Benefit Obligation and Projected Benefit Obligation in Excess of Plan Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
UNITED STATES
Defined Benefit Plan Disclosure
Projected benefit obligation	$ 43.8	$ 58
Accumulated benefit obligation	42.3	55.7
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Projected benefit obligation	29.9	45.8
Accumulated benefit obligation	28.6	42.5
Fair value of plan assets	$ 2.1	$ 2

Schedule of Net Periodic Pensio

Schedule of Net Periodic Pension and Postretirement (income) Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure
Net actuarial loss (gain)	$ (25,584)	$ (2,217)	$ 10,284
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Amortization of Intangible Assets
UNITED STATES
Defined Benefit Plan Disclosure
Service cost	$ 1,588	1,784	1,773
Interest cost	4,886	4,427	5,770
Expected return on plan assets	(2,927)	(3,858)	(4,840)
Net actuarial loss (gain)	(11,170)	643	6,463
Settlement (gain) loss	0	(204)	451
Total net periodic pension (income) cost	(7,623)	2,792	9,617
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Service cost	784	941	907
Interest cost	482	337	516
Expected return on plan assets	(75)	(67)	(65)
Net actuarial loss (gain)	(13,259)	(2,223)	2,949
Total net periodic pension (income) cost	(12,068)	(1,012)	4,307
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Service cost	64	64	57
Interest cost	177	170	240
Amortization of prior service cost	(9)	(9)	(9)
Net actuarial loss (gain)	(1,155)	(433)	421
Total net periodic pension (income) cost	(923)	(208)	709
Prior service cost	9	9	9
Total recognized in other comprehensive income	9	9	9
Total recognized in net periodic pension cost (income) and other comprehensive income	$ (914)	$ (199)	$ 718

Schedule of Weighted Average -

Schedule of Weighted Average - Assumptions to Determine Net Periodic Pension Cost (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
UNITED STATES
Defined Benefit Plan Disclosure
Discount rate	2.50%	2.20%	2.80%
Expected return on plan assets	2%	2.40%	3%
Salary progression rate	2.40%	2.40%	2.60%
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Discount rate	1.10%	0.70%	1.10%
Expected return on plan assets	4%	3.50%	3.80%
Salary progression rate	2.20%	2.30%	2.50%
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Discount rate	2.60%	2.20%	3%
Initial health care cost trend rate	7.30%	7.30%	7.10%
Ultimate health care cost trend rate	4.50%	4.50%	4.50%
Year in which ultimate health care cost trend rate is reached	2029	2029	2026

Schedule of Weighted Average As

Schedule of Weighted Average Assumptions to Determine Pension Obligations (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Discount rate	5%	2.60%	2.20%
Initial medical trend	7.20%	7.30%	7.30%
Ultimate health care trend	4.50%	4.50%	4.50%
Medical cost trend rate decrease to ultimate rate in year	2032	2029	2029
UNITED STATES
Defined Benefit Plan Disclosure
Discount rate	4.90%	2.60%
Salary progression rate	2.50%	2.40%
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Discount rate	3.50%	1.10%
Salary progression rate	2.10%	2.20%

Schedule of Weighted Average Pe

Schedule of Weighted Average Pension Assets Allocations by Category (Detail)	Dec. 31, 2022	Dec. 31, 2021
UNITED STATES
Defined Benefit Plan Disclosure
Total	100%	100%
UNITED STATES | Fixed income securities
Defined Benefit Plan Disclosure
Total	94%	94%
UNITED STATES | Equity securities
Defined Benefit Plan Disclosure
Total	5%	5%
UNITED STATES | Other than Securities Investment
Defined Benefit Plan Disclosure
Total	1%	1%
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Total	100%	100%
Foreign Pension Plans, Defined Benefit | Other than Securities Investment
Defined Benefit Plan Disclosure
Total	100%	100%

Schedule of Target Assets Alloc

Schedule of Target Assets Allocation (Detail)	Dec. 31, 2022
Barclays U.S. Corporate A or Better Index | U.S. corporate fixed income
Defined Benefit Plan Disclosure
Target assets allocation percentage	75%
Barclays U.S. Long Government Bond Index | U.S. government fixed income
Defined Benefit Plan Disclosure
Target assets allocation percentage	14%
MSCI World Minimum Volatility Index | Global equity
Defined Benefit Plan Disclosure
Target assets allocation percentage	5%
Barclays U.S. Corporate High Yield 2% Issuer Cap Index | High yield fixed income
Defined Benefit Plan Disclosure
Target assets allocation percentage	5%
Citigroup Three Month U.S. Treasury Bill Index | Cash
Defined Benefit Plan Disclosure
Target assets allocation percentage	1%

Schedule of Fair Value of Pensi

Schedule of Fair Value of Pensions Plan Assets by Asset Category (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure
Total	$ 113,800
UNITED STATES
Defined Benefit Plan Disclosure
Total	111,760	$ 149,578	$ 158,855
UNITED STATES | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Defined Benefit Plan Disclosure
Total	1,147	1,500
UNITED STATES | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure
Total	110,613	148,078
UNITED STATES | Corporate Debt Securities
Defined Benefit Plan Disclosure
Total	89,403	119,805
UNITED STATES | Corporate Debt Securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure
Total	89,403	119,805
UNITED STATES | US Government Debt Securities
Defined Benefit Plan Disclosure
Total	15,631	20,847
UNITED STATES | US Government Debt Securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure
Total	15,631	20,847
UNITED STATES | Global equity Securities
Defined Benefit Plan Disclosure
Total	5,579	7,426
UNITED STATES | Global equity Securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure
Total	5,579	7,426
UNITED STATES | Cash and Cash Equivalents
Defined Benefit Plan Disclosure
Total	1,147	1,500
UNITED STATES | Cash and Cash Equivalents | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Defined Benefit Plan Disclosure
Total	1,147	1,500
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Total	2,087	2,017	$ 1,856
Foreign Pension Plans, Defined Benefit | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure
Total	2,087	2,017
Foreign Pension Plans, Defined Benefit | Other
Defined Benefit Plan Disclosure
Total	2,087	2,017
Foreign Pension Plans, Defined Benefit | Other | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure
Total	$ 2,087	$ 2,017

Schedule of Expected Future Ben

Schedule of Expected Future Benefit Payments (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
UNITED STATES
Defined Benefit Plan Disclosure
2023	$ 10,323
2024	9,274
2025	9,912
2026	9,971
2027	10,742
2028-2031	52,877
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
2023	1,239
2024	1,055
2025	1,014
2026	1,130
2027	1,239
2028-2031	8,216
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
2023	853
2024	688
2025	573
2026	436
2027	386
2028-2031	$ 1,291

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	1 Months Ended						12 Months Ended
	Jan. 31, 2022	Jul. 31, 2021	Jan. 31, 2021	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2022	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award
Total shareholder return performance measurement period							3 years
Restricted stock unit awards granted							660,000	447,000	616,000
Weighted average grant date fair value of restricted stock units granted							$ 108,740	$ 115,510	$ 72,760
Stock price							$ 112.12	$ 113.48	$ 72.61
Tax benefit from compensation expense							$ 11,493,000	$ 14,389,000	$ 13,060,000
Total unrecognized expense related to non-vested restricted stock unit awards and stock options							$ 61,100,000
Unrecognized expense related to non-vested restricted stock unit awards and stock options expected to be recognized over weighted average period, in years							2 years 6 months
Maximum percent of shares allowed to purchase							10%
Fair market value							$ 25,000
Maximum number of shares allowed to purchase							6,000
Percentage of common stock price paid							85%
Common stock issued to employees	200,000	200,000	100,000	100,000	100,000	200,000
Value of common stock issued to employees per share		$ 113.87		$ 71.83			$ 74.25	$ 139	$ 101.91	$ 76.12
Number of shares available for grant							5,062,000	5,713,000	6,123,000		6,727,000
Discrete tax benefit							$ 12,300,000	$ 14,700,000	$ 9,600,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Cash received from employees, employee stock options exercises							900,000	3,100,000	3,800,000
Tax benefit from compensation expense							$ 100,000	$ 400,000	$ 1,500,000
Percentage of common stock price paid							100%
Stock Options | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Period of stock granted to employees and executive officers vest in equal installments							7 years
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award
Restricted stock unit awards granted							660,000	447,000	616,000
Restricted Stock Units | Employees
Share-based Compensation Arrangement by Share-based Payment Award
Period of stock granted to employees and executive officers vest in equal installments							4 years
Percentage of awards vesting on the first anniversary of grant date							100%
Restricted Stock Units | Director
Share-based Compensation Arrangement by Share-based Payment Award
Period of stock granted to employees and executive officers vest in equal installments							1 year
TSR Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award
Total shareholder return performance measurement period							3 years
Minimum years of service for retirement to be eligible for PRSUs							10 years
Restricted stock unit awards granted								100,000	100,000
Weighted average grant date fair value of restricted stock units granted							$ 101.06	$ 114.16	$ 89.93
Stock price							112.12	113.48	72.1
TSR Performance-Based Restricted Stock Units | Measurement Input, Expected Dividend Payment [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Estimated annual dividend amount per share							$ 0.44	$ 0.4	$ 0.4
TSR Performance-Based Restricted Stock Units | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of vesting of target shares upon performance achieved							200%
TSR Performance-Based Restricted Stock Units | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award
Percentage of vesting of target shares upon performance achieved							0%
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares available for grant							3,900,000
Employee Stock Purchase Plan | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Period of stock granted to employees and executive officers vest in equal installments							4 years
PBIT Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award
Restricted stock unit awards granted							100,000	100,000	100,000
Weighted average grant date fair value of restricted stock units granted								$ 110.84	$ 71.31
Service-Based Restricted Stock Units | Measurement Input, Expected Dividend Payment [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Estimated annual dividend amount per share							$ 0.4
Service-Based Restricted Stock Units | Employees
Share-based Compensation Arrangement by Share-based Payment Award
Restricted stock unit awards granted							400,000	300,000	400,000
Weighted average grant date fair value of restricted stock units granted							$ 109.42
Service-Based Restricted Stock Units | Non Employee Directors And Certain Employees
Share-based Compensation Arrangement by Share-based Payment Award
Restricted stock unit awards granted							100,000	100,000	100,000
Weighted average grant date fair value of restricted stock units granted							$ 105.93	$ 128.7	$ 66.56
Service Based Stock Options | Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award
Restricted stock unit awards granted							100,000	100,000	100,000
Weighted average grant date fair value of restricted stock units granted							$ 39.01	$ 36.6	$ 20.93

Schedule of Estimated Fair Valu

Schedule of Estimated Fair Value of TSR Performance-Based Restricted Stock Unit Awards Assumptions (Detail) - TSR Performance-Based Restricted Stock Units	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Risk-free interest rate	1.40%	0.20%	1.50%
Expected historical volatility	47.10%	43.90%	34.90%
Dividend yield	0.40%	0.40%	0.60%
New York Stock Exchange Composite Index
Share-based Compensation Arrangement by Share-based Payment Award
Expected historical volatility	22.70%	22.90%	11.40%

Schedule of Estimated Fair Va_2

Schedule of Estimated Fair Value of Stock Options Grant Using Black Scholes Option Pricing Model (Detail) - Stock Options	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Expected life (years)	4 years	5 years	5 years
Risk-free interest rate	1.60%	0.40%	1.50%
Volatility-historical	43.70%	37.80%	32%
Dividend yield	0.40%	0.40%	0.50%

Schedule of Stock Compensation

Schedule of Stock Compensation Plan Activity (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Awarded	660	447	616
Forfeited	(51)	(70)	(68)
Outstanding at January 1	171	216	319
Granted	42	34	56
Exercised	(25)	(78)	(159)
Forfeited		(1)
Outstanding at December 31	188	171	216
Vested and expected to vest at December 31	188	171	216
Exercisable at December 31	69	30	27
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award
Non-vested at January 1	1,417	1,789	2,269
Awarded	660	447	616
Vested	(709)	(749)	(1,028)
Forfeited	(51)	(70)	(68)
Non-vested at December 31	1,317	1,417	1,789

Schedule of Share Based Compens

Schedule of Share Based Compensation Total Shares Available (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Available for grant at January 1	5,713	6,123	6,727
Options granted	(42)	(34)	(56)
Options forfeited		1
Restricted stock units awarded	(660)	(447)	(616)
Restricted stock units forfeited	51	70	68
Available for grant at December 31	5,062	5,713	6,123

Schedule of Weighted-Average Re

Schedule of Weighted-Average Restricted Stock Unit Award Fair Value (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Non-vested at January 1	$ 67,970	$ 47,840	$ 35,580
Awarded	108,740	115,510	72,760
Vested	54,270	43,990	31,530
Forfeited	85,710	65,520	45,360
Non-vested at December 31	$ 88,710	$ 67,970	$ 47,840

Schedule of Restricted Stock Un

Schedule of Restricted Stock Unit Awards Aggregate Intrinsic Value (Detail) - Restricted Stock Units - USD ($) $ / shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Vested	$ 95,408	$ 101,679	$ 71,582
Outstanding	$ 115,087	$ 231,763	$ 214,509
Expected to vest	$ 108,666	$ 231,246	$ 210,301

Schedule of Restricted Stock _2

Schedule of Restricted Stock Units Weighted Average Remaining Contractual Terms (Detail) - Restricted Stock Units	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Outstanding	11 months 26 days	10 months 20 days	11 months 15 days
Expected to vest	11 months 26 days	10 months 20 days	11 months 15 days

Schedule of Weighted Average St

Schedule of Weighted Average Stock Options Exercise Price (Detail)	12 Months Ended
	Dec. 31, 2022 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award
Outstanding at January 1	$ 62.13
Options granted	112.12
Options exercised	37.13
Options forfeited
Options cancelled	0
Outstanding at December 31	76.52
Exercisable at December 31	$ 55.9

Schedule of Stock Option Aggreg

Schedule of Stock Option Aggregated Intrinsic Value Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Exercised	$ 2,030	$ 6,345	$ 9,682
Outstanding	3,963	17,356	16,083
Expected to vest	1,583	13,500	13,499
Vested and exercisable	$ 2,380	$ 3,856	$ 2,584

Schedule of Stock Options Weigh

Schedule of Stock Options Weighted Average Remaining Contractual Terms (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Outstanding	4 years 2 months 12 days	4 years 4 months 24 days	4 years 7 months 6 days
Expected to vest	4 years 9 months 18 days	4 years 9 months 18 days	4 years 10 months 24 days
Vested and exercisable	3 years 1 month 6 days	2 years 6 months	2 years 6 months

Stock Based Compensation (Detai

Stock Based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 48,228	$ 45,643	$ 44,906
Income tax benefit	(11,493)	(14,389)	(13,060)
Total stock-based compensation expense after income taxes	36,735	31,254	31,846
Cost Of Revenues
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	4,050	4,196	4,227
Engineering And Development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	9,992	9,783	12,039
Selling and Administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 34,186	$ 31,664	$ 28,640

Savings Plan - Additional Infor

Savings Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Savings Plan [Line Items]
Savings plan maximum percentage of employees contribution allowable	20%
Percentage of employer contributions vested per year	25%
Maximum employment period considered for vesting of employers' contribution, in years	4 years
Liability, Retirement and Postemployment Benefits	$ 44.1	$ 47.2
U.S. Qualified Pension Plan
Savings Plan [Line Items]
Maximum percentage of matching contributions made by the employer	100%	100%	100%
Percentage of employer match on employee contribution	4%	4%	4%
Savings Plan
Savings Plan [Line Items]
Amounts charged to statements of operations	$ 30.1	$ 26.9	$ 21.7

Schedule of Income (Loss) Befor

Schedule of Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
U.S.		$ 385,968	$ 403,451	$ 312,153
Non-U.S.		454,417	757,504	588,862
Income before income taxes	[1],[2]	$ 840,385	$ 1,160,955	$ 901,015
[1]Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), net cash flow hedge gains (losses), intercompany eliminations, pension and postretirement plan actuarial gains (losses), legal and environmental fees, contingent consideration adjustments, acquisition related charges and compensation, gain on sale of asset, and loss on convertible debt conversions in 2021.[2]Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and loss on convertible debt conversions in 2021.

Schedule of Provision (Benefit)

Schedule of Provision (Benefit) for Income Taxes from Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Current, U.S. Federal	$ 86,692	$ 58,218	$ 58,678
Current, Non-U.S.	74,204	105,153	75,193
Current, State	2,681	300	(1,315)
Current, Total	163,577	163,671	132,556
Deferred, U.S. Federal	(36,739)	(15,106)	(12,604)
Deferred, Non-U.S.	1,232	(4,300)	(5,127)
Deferred, State	(3,186)	2,101	2,043
Deferred, Total	(38,693)	(17,305)	(15,688)
Total provision for income taxes	$ 124,884	$ 146,366	$ 116,868

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2017	Dec. 31, 2019
Income Taxes [Line Items]
Total (benefit) provision for income taxes	$ 124,884	$ 146,366	$ 116,868
Effective tax rate	14.90%	12.60%	13%
Tax savings due to the tax holiday	$ 16,000	$ 29,900	$ 33,300
Tax savings due to the tax holiday, per share	$ 0.18	$ 0.09	$ 0.16
Tax holiday expiration date	December 31, 2025
Valuation allowance includes net deferred tax assets	$ 103,807	$ 97,170
Tax credit carryforwards, approximately				$ 138,400
Tax credits carryforwards	105,503	98,378
Reduction in unrecognized tax benefits	15,608	14,465	$ 17,903		$ 21,180
Unrecognized tax benefits, if recognized would impact effective tax rate	10,100
Unrecognized tax benefits, if recognized would impact deferred taxes	5,500
Accrued interest and penalties	400	300
Interest and penalties related to income tax, expense (benefit)	100	900	200
Expense related to remeasurement of deferred tax assets and liabilities	67,000
Expected future payments related transition tax in 2022	7,900
Expected future payments related transition tax in one to three years	34,500
Expected future payments related transition tax in three to five years	24,600
InterCompany Cost Sharing Arrangement [Member]
Income Taxes [Line Items]
Total (benefit) provision for income taxes		$ 2,500	$ 2,300
United States
Income Taxes [Line Items]
Tax credits carryforwards, business				$ 2,400
Tax credit carryforward, expiration date				2028
State and Local Jurisdiction
Income Taxes [Line Items]
Tax credits carryforwards				$ 136,100
Reduction in unrecognized tax benefits	$ 15,600
State and Local Jurisdiction | Earliest Tax Year
Income Taxes [Line Items]
Tax credit carryforward, expiration date				2023
State and Local Jurisdiction | Latest Tax Year
Income Taxes [Line Items]
Tax credit carryforward, expiration date				2042
State and Local Jurisdiction | Do Not Expire
Income Taxes [Line Items]
Tax credits carryforwards				$ 72,000

Schedule of Reconciliation of E

Schedule of Reconciliation of Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
U.S. statutory federal tax rate	21%	21%	21%
U.S. global intangible low-taxed income	1.20%	0.60%	2.10%
Non-deductible officers' compensation	1.30%	0.80%	0.50%
U.S. foreign derived intangible income	(3.10%)	(2.30%)	(2.20%)
Foreign taxes	(1.90%)	(4.50%)	(5.60%)
U.S. research and development credit	(1.80%)	(1.40%)	(1.30%)
Equity compensation	(1.10%)	(1.00%)	(0.80%)
Foreign tax credits	(1.00%)	(0.50%)	(1.20%)
State income taxes, net of federal tax benefit	(0.10%)	0.20%	0.30%
Other, net	0.40%	(0.30%)	0.20%
Effective tax rate, Total	14.90%	12.60%	13%

Schedule of Components of Defer

Schedule of Components of Deferred Tax Assets Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Tax credits	$ 105,503	$ 98,378
Research and development	47,760	0
Accruals	30,747	41,459
Pension liabilities	21,335	28,722
Inventory valuations	22,554	20,991
Lease liability	18,679	16,484
Deferred revenue	14,909	11,164
Equity compensation	6,578	6,630
Vacation accrual	5,856	6,050
Investment impairment	3,292	3,292
Marketable securities	2,283	0
Net operating loss carryforwards	1,857	1,721
Intangible assets	350	0
Other	2,520	774
Gross deferred tax assets	284,223	235,665
Less: valuation allowance	(103,807)	(97,170)
Total deferred tax assets	180,416	138,495
Right of use assets	(16,607)	(14,738)
Depreciation	(19,078)	(10,691)
Intangible assets	0	(8,531)
Contingent consideration	(5,214)	(5,214)
Marketable securities	0	(3,220)
Total deferred tax liabilities	(40,899)	(42,394)
Net deferred assets	$ 139,517	$ 96,101

Summary of Operating Loss Carry

Summary of Operating Loss Carryforwards (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	$ 628
Foreign Operating Loss Carryforwards	1,229
2023
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	222
2024
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	6
2025
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	4
2026
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	0
2027
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	0
2028-2032
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	299
Foreign Operating Loss Carryforwards	676
2033-2037
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	44
Foreign Operating Loss Carryforwards	3
Beyond 2037
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	24
Non-Expiring
Operating Loss Carryforwards [Line Items]
U.S. Federal Operating Loss Carryforwards	29
Foreign Operating Loss Carryforwards	$ 550

Schedule of Unrecognized Tax Be

Schedule of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Beginning balance, as of January 1	$ 14,465	$ 17,903	$ 21,180
Tax positions for current year, Additions	1,398	1,417	1,082
Tax positions for prior years, Additions	13	30	66
Tax positions for prior years, Reductions	(56)	(1,639)	(2,989)
Expiration of statutes, Reductions	(212)	(3,246)	(1,436)
Ending balance as of December 31	$ 15,608	$ 14,465	$ 17,903

Operating Segment, Geographic_3

Operating Segment, Geographic and Significant Customer Information - Additional Information (Detail) - Segment	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Operating segments	4
Qualcomm | Consolidated Revenue | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	11%	10%	10%
Semiconductor Test | Consolidated Revenue | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	10%	19%	25%
Semiconductor Test | Customer 1 | Consolidated Revenue | Revenue from Rights Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	12%	15%

Schedule of Segment Information

Schedule of Segment Information (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues	[1],[2]	$ 3,155,045	$ 3,702,881	$ 3,121,469
Income (loss) before taxes	[3],[4]	840,385	1,160,955	901,015
Total assets	[5]	3,501,252	3,809,425	3,652,346
Property additions		163,249	132,472	184,977
Depreciation and amortization expense		110,675	125,485	126,743
Semiconductor Test
Segment Reporting Information [Line Items]
Revenues		2,080,590	2,642,342	2,259,597
Income (loss) before taxes	[3],[4]	634,488	976,988	739,695
Total assets	[5]	1,382,623	1,245,596	1,070,378
Property additions		126,898	115,618	168,055
Depreciation and amortization expense		76,532	75,982	64,998
System Test
Segment Reporting Information [Line Items]
Revenues	[1]	469,346	467,739	409,729
Income (loss) before taxes	[3],[4]	166,879	163,064	152,092
Total assets	[5]	165,925	170,954	138,295
Property additions		7,275	3,905	3,092
Depreciation and amortization expense		3,235	3,156	3,426
Robotics
Segment Reporting Information [Line Items]
Revenues		403,138	375,905	279,731
Income (loss) before taxes	[3],[4]	(16,244)	(8,167)	(24,019)
Total assets	[5]	665,638	701,196	712,936
Property additions		25,712	9,821	8,899
Depreciation and amortization expense		25,339	27,336	36,242
Wireless Test
Segment Reporting Information [Line Items]
Revenues	[1]	201,720	216,895	173,016
Income (loss) before taxes	[3],[4]	66,820	83,543	41,950
Total assets	[5]	94,298	107,513	106,273
Property additions		3,364	3,128	4,931
Depreciation and amortization expense		4,991	6,055	6,258
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		251		(604)
Income (loss) before taxes	[3],[4]	(11,558)	(54,473)	(8,703)
Total assets	[5]	1,192,768	1,584,166	1,624,464
Depreciation and amortization expense		$ 578	$ 12,956	$ 15,819
[1]Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”[2]Revenues attributable to a country are based on location of customer site.[3]Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), net cash flow hedge gains (losses), intercompany eliminations, pension and postretirement plan actuarial gains (losses), legal and environmental fees, contingent consideration adjustments, acquisition related charges and compensation, gain on sale of asset, and loss on convertible debt conversions in 2021.[4]Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and loss on convertible debt conversions in 2021.[5]Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.

Schedule of Segment Reporting I

Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Restructuring and other—employee severance	$ 17,185	$ 9,312	$ (13,202)
Restructuring and other—gain on sale of asset	3,410	0	0
Other (income) expense, net—loss on convertible debt conversion	5,786	(24,572)	(9,192)
Restructuring and other—AutoGuide contingent consideration adjustment	0	(7,227)	(23,271)
Mobile Industrial Robots (MiR)
Segment Reporting Information [Line Items]
Restructuring and other—AutoGuide contingent consideration adjustment		7,200
Semiconductor Test
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	21,456	6,661	11,013
Contract termination settlement fee			4,000
Restructuring and other—acquisition related expenses and compensation		500	2,500
Restructuring and other—environmental and legal liabilities		2,500
Restructuring and other—AutoGuide contingent consideration adjustment			3,500
System Test
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	1,730	641	887
Robotics
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	3,668	6,403	834
Restructuring and other—employee severance	2,115	1,210	1,584
Restructuring and other—acquisition related expenses and compensation		1,000	985
Wireless Test
Segment Reporting Information [Line Items]
Cost of revenues—inventory charge	4,598	1,770	4,800
Corporate And Eliminations | Restructuring and other
Segment Reporting Information [Line Items]
Restructuring and other—acquisition related expenses and compensation		(513)	1,728
Restructuring and other—legal settlement charge	14,700	12,000
Restructuring and other—environmental and legal liabilities	2,700	1,971
Restructuring and other—gain on sale of asset	$ (3,410)
Other (income) expense, net—loss on convertible debt conversion		28,828
Corporate And Eliminations | Selling, general and administrative expenses
Segment Reporting Information [Line Items]
Selling and administrative—equity modification charge			766
Corporate And Eliminations | Mobile Industrial Robots (MiR) | Restructuring and other
Segment Reporting Information [Line Items]
Restructuring and other—AutoGuide contingent consideration adjustment		$ (7,227)	(19,724)
Restructuring and other—MiR contingent consideration adjustment			$ (3,546)

Schedule of Revenues by Country

Schedule of Revenues by Country (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[1],[2]	$ 3,155,045	$ 3,702,881	$ 3,121,469
TAIWAN
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	626,424	1,117,874	1,178,068
KOREA
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	544,816	502,167	391,571
CHINA
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	491,798	631,963	465,722
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	469,948	392,626	321,674
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	268,384	259,954	205,587
JAPAN
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	162,920	166,231	143,983
MALAYSIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	142,203	136,774	56,096
THAILAND
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	137,356	138,812	138,787
PHILIPPINES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	124,107	166,838	68,887
SINGAPORE
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	99,503	121,582	76,460
Rest Of The World
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from unaffiliated customers	[2]	$ 87,586	$ 68,060	$ 74,634
[1]Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”[2]Revenues attributable to a country are based on location of customer site.

Schedule of Long-Lived Assets b

Schedule of Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		$ 492,417	$ 456,047
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		328,341	308,438
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	[1]	$ 164,076	$ 147,609
[1]As of December 31, 2022 and 2021, long-lived assets attributable to Singapore were $30.7 million and $39.4 million, respectively.

Stock Repurchase Program - Addi

Stock Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2023	Jan. 31, 2021	Jan. 01, 2021
Stock Repurchase Programs [Line Items]
Cumulative repurchases, shares	7.3	12	4.8
Cumulative repurchases, value	$ 752.1	$ 1,352.1	$ 600	$ 500	$ 2,000	$ 2,000
Common stock average price	$ 103.69	$ 112.44	$ 125.74

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Cash Dividends payable, amount per share	$ 0.11
Cash Dividends payable, date to be paid	Mar. 17, 2023
Share-Based Payment Arrangement, Expense			$ 48,228	$ 45,643	$ 44,906
Subsequent Event
Subsequent Event [Line Items]
Cash Dividends payable, record date	Feb. 17, 2023
Subsequent Event | Retirement Agreement [Member]
Subsequent Event [Line Items]
Share-Based Payment Arrangement, Expense		$ 5,800

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 2,012	$ 2,034	$ 1,736
Additions Charged to Cost and Expenses	500	500	356
Other	(6)	(27)	32
Deductions	551	495	90
Balance at End of Period	1,955	2,012	2,034
Inventory Reserve
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	114,055	110,587	103,556
Additions Charged to Cost and Expenses	31,452	15,475	17,534
Other	1,926	1,335	(521)
Deductions	10,595	13,342	9,982
Balance at End of Period	136,838	114,055	110,587
Valuation Allowance of Deferred Tax Assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	97,170	84,962	77,177
Additions Charged to Cost and Expenses	7,652	13,502	7,785
Other	21	0	0
Deductions	1,036	1,294	0
Balance at End of Period	$ 103,807	$ 97,170	$ 84,962