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Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2018
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, 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. Actual results may differ significantly from these estimates.
Revenue Recognition
Revenue Recognition
Revenue from Contracts with Customers
Teradyne adopted Accounting Standards Codification (“ASC”) 606, “
Revenue from Contracts with Customers” 
on January 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for 2018 reflect the application of ASC 606 while the reported results for 2017 were prepared under the guidance of ASC 605, 
“Revenue Recognition,” 
which is also referred to herein as “Legacy GAAP” or the “previous guidance.” Teradyne recorded a net increase to retained earnings of $12.7 million as of January 1, 2018 due to the cumulative impact of adopting ASC 606. The adoption of ASC 606 represents a change in accounting principle that will more closely align the timing of revenue recognition with the delivery of Teradyne’s hardware and services and will provide financial statement readers with enhanced disclosures. In accordance with ASC 606, revenue is recognized when or as a customer obtains control of promised goods or services. The amount of revenue recognized reflects the consideration to which Teradyne expects to be entitled to receive in exchange for fulfillment of the performance obligation. Teradyne’s primary source of revenue will continue to be from the sale of systems, instruments, robots, and the delivery of services.
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.
Step 1: Identify the contract with the customer
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.
Step 2: Identify the performance obligations in the contract
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.
Step 3: Determine the transaction price
Teradyne considers the amount stated on the face of the purchase order to be the transaction price. Teradyne does not have material variable consideration which could impact the stated purchase price agreed to by Teradyne and the customer.
Step 4: Allocate the transaction price to the performance obligations in the contract
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.
Step 5: Recognize revenue when (or as) the entity satisfies a 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.
Revenue recognized in accordance with ASC 606 was $2,088.8 million for the twelve months ended December 31, 2018. For the twelve months ended December 31, 2018, Teradyne also recognized $12.0 million in revenue on leases of Teradyne systems, which are accounted for outside of ASC 606.
 
Disaggregation of Revenue
The following table provides information about disaggregated revenue by primary geographical market, major product line and timing of revenue recognition.
 
 
 
For the Year Ended December 31, 2018
 
 
 
Semiconductor Test
 
 
System Test
 
 
Industrial Automation
 
 
Wireless
Test
 
 
Corporate
and Other
 
 
Consolidated
 
 
 
System on
Chip
 
 
Memory
 
 
Defense/
Aerospace
 
 
Storage
Test
 
 
Production
Board Test
 
 
Universal
Robots
 
 
Mobile
Industrial
Robots
 
 
Energid
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Americas
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Point in time
 
$
43,398
 
 
$
14,579
 
 
$
59,246
 
 
$
767
 
 
$
9,082
 
 
$
68,289
 
 
$
7,326
 
 
$
543
 
 
$
17,730
 
 
$
(1,205
)
 
$
219,755
 
Over time
 
 
35,100
 
 
 
2,774
 
 
 
24,577
 
 
 
 
 
 
3,091
 
 
 
649
 
 
 
 
 
 
997
 
 
 
1,436
 
 
 
 
 
 
68,624
 
Europe, Middle East and Africa
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Point in time
 
 
50,988
 
 
 
9,726
 
 
 
3,056
 
 
 
 
 
 
16,733
 
 
 
105,776
 
 
 
10,839
 
 
 
 
 
 
3,821
 
 
 
 
 
 
200,939
 
Over time
 
 
21,584
 
 
 
1,125
 
 
 
2,124
 
 
 
 
 
 
6,467
 
 
 
1,000
 
 
 
 
 
 
1,591
 
 
 
1,147
 
 
 
 
 
 
35,038
 
Asia Pacific
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Point in time
 
 
916,107
 
 
 
235,061
 
 
 
2,769
 
 
 
58,004
 
 
 
17,761
 
 
 
57,830
 
 
 
5,950
 
 
 
10
 
 
 
100,985
 
 
 
 
 
 
1,394,477
 
Over time
 
 
140,887
 
 
 
10,203
 
 
 
965
 
 
 
7,877
 
 
 
3,221
 
 
 
551
 
 
 
 
 
 
101
 
 
 
6,127
 
 
 
 
 
 
169,932
 
Lease revenue
 
 
10,885
 
 
 
 
 
 
 
 
 
 
 
 
392
 
 
 
 
 
 
 
 
 
 
 
 
760
 
 
 
 
 
 
12,037
 
Total
 
$
1,218,949
 
 
$
273,468
 
 
$
92,737
 
 
$
66,648
 
 
$
56,747
 
 
$
234,095
 
 
$
24,115
 
 
$
3,242
 
 
$
132,006
 
 
$
(1,205
)
 
$
2,100,802
 
Performance Obligations
Hardware
Teradyne hardware consists 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, collaborative robots, autonomous mobile robots and wireless test systems. The hardware includes a standard 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. Teradyne’s hardware is recognized at a point in time upon transfer of control to the customer.
Extended Warranty
Customers have the option to purchase an extended warranty, which extends the warranty period for systems and robots beyond the
one-year
standard warranty. The extended warranty is purchased in the same transaction as the system or robot purchase and is classified as a separate performance obligation, which meets the criteria for over time recognition. The relative standalone selling price of the extended warranty is recognized ratably over the course of the extended warranty based on months completed.
Training and Applications Support
Teradyne sells training and applications support to customers either in standalone transactions or included with system purchases. The training and support allow the customer to use Teradyne’s systems efficiently and effectively. Training and applications support included in system orders are valued based on their standalone selling price and all training and applications support is recognized over time as the customer receives and consumes the benefit associated with each. Both are recognized using an input method of hours consumed as this best depicts the transfer of services to the customer.
Service Agreements
Service agreements are recognized ratably over the period of agreement based on months completed.
Post-Contract Customer Support (“PCS”)
Teradyne provides support services for certain systems and robots outside of warranty. These services include telephone support, bug fixes, and
when-and-if
available upgrades. Standalone selling price for PCS is not directly observable as Teradyne does not sell these services separately. Teradyne has estimated the standalone selling price for these services based on adjusted market assessments. Revenue for PCS is recognized ratably over the performance period.
Teradyne does not allow customer returns or provide refunds to customers for any products or services.
Contract Balances
The following table provides information about contract liabilities. Teradyne does not have material contract assets on the balance sheet.
 
 
 
December 31,
2018
 
 
January 1, 2018
(as adjusted)
 
 
Increase
 
 
 
 
(in thousands)
 
Deferred revenue and customer advances
 
$
77,711
 
 
$
76,638
 
 
$
1,073
 
Long-term deferred revenue and customer advances
 
 
32,750
 
 
 
20,848
 
 
 
11,902
 
The amount of revenue recognized during the twelve months ended December 
31
,
2018
that was previously included within the deferred revenue and customer advances balance was
$69.9 million and primarily relates to extended warranties, training, application support and PCS. Each of these represents a distinct performance obligation. Customers typically pay for these services net 30 to 60 days from the date that transfer of control of the associated system or product occurs. Teradyne expects to recognize 70% of the remaining performance obligation in the next 12 months, 25% in 1-3 years, and the remainder thereafter.
Practical Expedients
Teradyne has adopted the practical expedients available within ASC 340
“Other Assets and Deferred Costs”
for contract assets, specifically in relation to incremental costs of obtaining a contract. Teradyne generally expenses sales commissions when incurred because the amortization period would be less than one year. Teradyne records these costs within selling and administrative expenses.
Teradyne has adopted the practical expedient, which states an entity need not adjust the promised amount of consideration for the effects of a significant financing component if the entity expects, at contract inception, that the period between when the entity transfers a promised good or service to the customer and when the customer pays for that good or service will be one year or less. Teradyne does not have material payments associated with performance obligations outside this
one-year
time frame.
Impacts
The following tables summarize the impact of ASC 606 to Teradyne’s consolidated financial statements. Differences are the result of timing differences between the recognition of revenue under ASC 606 and ASC 605 primarily with respect to software transactions deferred due to lack of vendor specific objective evidence of price under ASC 605 and Teradyne’s assessment of acceptance under ASC 606. Under Legacy GAAP, Teradyne did not recognize revenue prior to acceptance if payment, title, or risk of loss was tied to acceptance. Under ASC 606, Teradyne recognizes revenue prior to receipt of acceptance if acceptance is deemed a formality.
Condensed Consolidated Balance Sheet:
 
 
 
December 31, 2018
 
 
 
As
Reported
 
 
Adjustments to
Recognize under
Legacy GAAP
 
 
Legacy
GAAP
 
 
 
(in thousands, except per share amount)
 
Assets
 
 
 
 
 
 
 
 
 
 
 
 
Accounts receivable, less allowance for doubtful accounts
 
$
291,267
 
 
$
(37,348
)
 
$
253,919
 
Inventories, net
 
 
153,541
 
 
 
10,759
 
 
 
164,300
 
Deferred tax assets
 
 
70,848
 
 
 
(3,874
)
 
 
66,974
 
Liabilities
 
 
 
 
 
 
 
 
 
 
 
 
Deferred revenue and customer advances
 
$
77,711
 
 
$
(4,118
)
 
$
73,593
 
Income taxes payable
 
 
36,185
 
 
 
(4,495
)
 
 
31,690
 
Long-term deferred revenue and customer advances
 
 
32,750
 
 
 
(10,303
)
 
 
22,447
 
Shareholders’ equity
 
 
 
 
 
 
 
 
 
 
 
 
Accumulated deficit
 
$
(158,191
)
 
$
(11,547
)
 
$
(169,738
)

Condensed Consolidated Stateme
nt of Operation:
 
 
 
For the Year Ended December 31, 2018
 
 
 
As
Reported
 
 
Adjustments to
Recognize under
Legacy GAAP
 
 
Legacy
GAAP
 
 
 
(in thousands, except per share amount)
 
Total revenues
 
$
2,100,802
 
 
$
(39,184
)
 
$
2,061,618
 
Total cost of revenues
 
 
880,408
 
 
 
(10,760
)
 
 
869,648
 
Income tax provision
 
 
16,022
 
 
 
(4,197
)
 
 
11,825
 
Net income
 
 
451,779
 
 
 
(24,227
)
 
 
427,552
 
Net income per common share:
 
 
 
 
 
 
 
 
 
 
 
 
Basic
 
$
2.41
 
 
$
(0.13
)
 
$
2.28
 
Diluted
 
$
2.35
 
 
$
(0.13
)
 
$
2.22
 
As of December 31, 2018 and 2017, deferred revenue and customer advances consisted of the following and are included in the short and long-term deferred revenue and customer advances:
 
 
 
 
2018
 
 
2017
 
 
 
(in thousands)
 
Maintenance and training
 
$58,362 
 
$57,256 
Extended warranty
 
 
27,422 
 
 
24,438 
Customer advances, undelivered elements and other
 
 
24,677 
 
 
32,047 
Total deferred revenue and customer advances
 
$110,461 
 
$113,741 
Product Warranty
Product Warranty
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, 2015
 
$30,024
 
Deferral of new extended warranty revenue
 
 
19,909
 
Recognition of extended warranty deferred revenue
 
 
(21,733)
Balance at December 31, 2016
 
 
28,200
 
Deferral of new extended warranty revenue
 
 
20,513
 
Recognition of extended warranty deferred revenue
 
 
(24,275)
Balance at December 31, 2017
 
 
24,438
 
Deferral of new extended warranty revenue
 
 
23,753
 
Recognition of extended warranty deferred revenue
 
 
(20,769)
Balance at December 31, 2018
 
$27,422
 
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. The volatility of the industries that Teradyne serves can cause certain of its customers to experience shortages of cash flows, which can impact their ability to make required payments. 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 $52.2 million and $5.4 million during 2018 and 2017, respectively. Factoring fees for the sales of receivables were recorded in interest expense and were 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
.” ASC
320-10
requires that certain debt and equity securities be classified into one of three categories; trading,
available-for-sale
or
held-to-maturity
securities. On a quarterly basis, Teradyne reviews its investments to identify and evaluate those that have an indication of a potential other-than-temporary impairment. Factors considered in determining whether a loss is other-than-temporary include:
 
 
  
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, 2018 and 2017. As defined in ASC 820-10, “
Fair Value Measurements and Disclosures,
” fair value is the price that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. ASC 820-10 requires that assets and liabilities carried at fair value be classified and disclosed in one of the following three categories:
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.
In accordance with ASC 820-10, Teradyne measures its debt and equity investments at fair value. 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
In January
2016
, the Financial Accounting Standards Board (“FASB”) issued ASU 
2016
-
01
“Financial Instruments—Overall (Subtopic 
825
-
10)
: Recognition and Measurement of Financial Assets and Financial Liabilities.”
Teradyne adopted the new accounting guidance in the first quarter of
2018
using the modified retrospective approach. This guidance requires that changes in fair value of equity securities be accounted for directly in earnings. Previously, the changes in fair value were recorded in accumulated other comprehensive income on the balance sheet.
Teradyne continues to record realized gains in interest income and realized losses in interest expense. The adoption of this new accounting guidance increased the January 
1
,
2018
retained earnings balance by $3.1
 million and decreased the accumulated other comprehensive income balance by the same amount.
Prepayments
Prepayments
Prepayments consist of the following and are included in prepayments and other current assets on the balance sheet:
 
 
 
2018
 
 
2017
 
 
 
(in thousands)
 
Contract manufacturer and supplier prepayments
 
$
131,642
 
 
$
82,503
 
Prepaid taxes
 
 
9,646
 
 
 
5,039
 
Prepaid maintenance and other services
 
 
8,487
 
 
 
8,189
 
Other prepayments
 
 
12,744
 
 
 
12,386
 
Total prepayments
 
$
162,519
 
 
$
108,117
 
Retirement and Postretirement Plans
Retirement and Postretirement Plans
Teradyne recogn
izes net ac
tuarial 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.
Retirement Benefits
Retirement Benefits
In March 2017
, the FA
SB issu
ed ASU 
2017
-
07
, “
Compensation—Retirement Benefits (Topic
715)
: Improving the Presentation of Net Periodic Pension Cost and Net Periodic
Postretirement Benefit
 
Cost
.” Teradyne retrospectively adopted the new accounting guidance on presentation of net periodic pension costs and net periodic postretirement benefit costs in the first quarter of
2018
. This guidance requires the service cost component of net benefit costs to be reported in the same line item in the consolidated statement of operations as other employee compensation costs. The non-service components of net benefit costs such as interest cost, expected return on assets, amortization of prior service cost, and actuarial gains or losses, are required to be reported separately outside of income or loss from operations. Following the adoption of this guidance, Teradyne continues to record the service cost component in the same line item as other employee compensation costs and the non-service components of net benefit costs such as interest cost, expected return on assets, amortization of prior service cost, and actuarial gains or losses are reported within other (income) expense, net. In the twelve months ended December 
31
,
2017
and
2016
, the retrospective adoption of this standard decreased income from operations by $
5.0
million and $
3.0
 million, respectively, due to the removal of net actuarial pension gains and increased non-operating (income) expense by the same amount with no impact to net income.
Goodwill, Intangible and Long-Lived Assets
Goodwill, Intangible and Long-Lived Assets
Teradyne accounts for go
odwill an
d intangible assets in accordance with ASC
350
-
10
,
Intangibles-Goodwill and Other.
” Intangible assets are amortized over their estimated useful economic life and are carried at cost less accumulated amortization. Goodwill is assessed for impairment at least annually in the fourth quarter, as of December 
31
, on a reporting unit basis, or more frequently when events and circumstances occur indicating that the recorded goodwill may be impaired. 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 the
two-step
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
two-step
goodwill impairment test is not required.
In accordance with ASC
360
-
10
,
Impairmen
t or
Disposal of Long-Lived 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. Each impairment test is based on a comparison of the estimated undiscounted cash flows to the recorded value of the asset. If impairment is indicated, the asset is written down to its estimated fair value based on a discounted cash flow analysis. The cash flow estimates used to determine the impairment, if any, contain management’s best estimates using appropriate assumptions and projections at that time.
Property, Plant and Equipment
Property, Plant and Equipment
Property, plant and equipment are stated at cos
t 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 years
Furniture and fixtures
 
10
years
Test systems manufactured internally
 
6
years
Machinery and equipment
 
3
to 5
years
Software
 
3
to 5
years
Test systems manufactured internally are used by
Te
radyne
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
,
2018
,
2017
, and
2016
was $3.8
 million, $3.6
 million, and $11.4
 million, respectively.
Engineering and Development Costs
Engineering and Development Costs
Teradyne’s products are highly technical in nature and require a
larg
e 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 val
ue e
stimated in accordance with the provisions of ASC
718
-
10
,
Compensation-Stock Compensation
.”
In March 
2016
, the FASB issued ASU
2016
-
09
“Compensation-Stoc
k C
ompensation (Topic
718)
: Improvements to Employee Share-Based Payment Accounting.”
Teradyne adopted this ASU in the first quarter of
2017
. This ASU changes how Teradyne accounts for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statements of cash flows.
Adoption of this ASU required recognition of a cumulative effect adjustment to
reta
ined earnings for any prior year excess tax benefits or tax deficiencies not previously recorded. The cumulative effect adjustment of $39
 million was recorded in the first quarter of
2017
as an increase to retained earnings and deferred tax assets.
This ASU also required a change in how Teradyne recognizes the excess tax benefits or tax
defic
iencies related to stock-based compensation. Prior to adopting ASU
2016
-
09
,
these excess tax benefits or tax deficiencies were credited or charged to additional
paid-in
capital in Teradyne’s consolidated balance sheets. In accordance with ASU
2016
-
09
,
starting in the first quarter of
2017
, these 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.
ASU
2016
-
09
requires companies to adopt the amendment related to accounting for excess tax ben
efit
s or tax deficiencies on a prospective basis. In
2017
, Teradyne recognized a discrete tax benefit of $
6.3
 million related to net excess tax benefit.
In addition, under ASU
2016
-
09
,
all excess tax benefits related to share-based payments are reported
as
cash flows from operating activities. Previously, excess tax benefits from share-based payment arrangements were reported as cash flows from financing activities. The classification amendment was applied prospectively. This ASU also clarifies that all cash payments made to taxing authorities on the employees’ behalf for withheld shares should be presented as financing activities on the statement of cash flows. Previously, Teradyne reported cash payments made to taxing authorities as operating activities on the statement of cash flows. This change was applied retrospectively.
Upon adoption of ASU
2016
-
09
,
Teradyne made an accounting policy election to continue accounting f
or
forfeitures by applying an estimated forfeiture rate and to continue to recognize compensation costs only for those stock-based compensation awards expected to vest.
Under its stock compensation plans, Teradyne has granted stock options, restricted stock units and p
erf
ormance-based restricted stock units, and employees are eligible to purchase
Teradyne’s common stock through its Employee Stock Purchase Plan (“ESPP”).
Income Taxes
Income Taxes
Deferred tax assets and liabilities are determined based on differences between financial re
porti
ng 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.”
 This assessment included the evaluation of scheduled reversals of deferred tax liabilities, estimates of projected future taxable income and tax-planning strategies. Although realization is not assured, based on its assessment, Teradyne concluded that it is more likely than not that such assets, net of the existing valuation allowance, will be realized.
Advertising Costs
Advertising Costs
Teradyne expenses all advertising costs as incurred.
Adve
rtising costs were $15.4
 million, $9.1
 million, and $6.4
 million in
2018
,
2017
, and
2016
, respectively.
Translation of Non-U.S. Currencies
Translation of
Non-U.S.
Currencies
The functional currency for all subsidiaries is the U.S. dollar, except for the Uni
ver
sal Robots and MiR reporting units 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 Industrial Automation, assets and liabilities are translated into U.S. dollars using exchange rates in effect at the end of the period. Revenue 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).
Net foreign exchange gains and losses resulting from remeasurement are included in other (incom
e) e
xpense, net. For the years ended December 
31
,
2018
,
2017
, and
2016
, (gains) losses from the remeasurement of the monetary assets and liabilities denominated in foreign currencies were $(2.4)
 million, $2.9
 million, and $(8.0)
 million, respectively.
These amounts do not reflect the corresponding (gains) losses from foreign exchange con
trac
ts. See Note G: “Financial Instruments” regarding foreign exchange contracts.
Net Income (Loss) per Common Share
Net Income (Loss) per Common Share
Basic net income (loss) per common share is calculated by dividing net income (loss) by the
w
eighted average number of common shares outstanding during the period. Except where the result would be anti-dilutive, diluted net income (loss) per common share is calculated by dividing net income (loss) 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 has determined that it has the abili
ty a
nd intent 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 (Loss)
Comprehensive Income (Loss)
Comprehensive income (loss) includes net income, unrealized pension and postretirement prior service costs and benefits, unrealized gains and losses on investments in debt marketable securities and foreign currency translation adjustment. Prior to 2018, comprehensive income (loss) included unrealized gains and losses on investments in equity marketable securities.