Note 1. Nature of Business, Basis of Presentation and Significant Accounting Policies

Description of Business – Nanometrics Incorporated (“Nanometrics” or the “Company”) and its wholly-owned subsidiaries provide advanced, high-performance process control metrology and inspection systems used primarily in the fabrication of semiconductors and other solid-state devices as well as industrial and scientific applications. Nanometrics' metrology systems precisely measure a wide range of film types deposited on substrates during manufacturing to control manufacturing processes and increase production yields in the fabrication of integrated circuits. The Company’s optical critical dimension (“OCD”) technology is a patented critical dimension measurement technology that is used to precisely determine the dimensions on the semiconductor wafer that directly control the resulting performance of the integrated circuit devices. The thin film metrology systems use a broad spectrum of wavelengths, high-sensitivity optics, proprietary software, and patented technology to measure the thickness and uniformity of films deposited on silicon and other substrates as well as their chemical composition. The overlay metrology systems are used to measure the overlay accuracy of successive layers of semiconductor patterns on wafers in the photolithography process. Nanometrics' inspection systems are used to find defects on patterned and unpatterned wafers at nearly every stage of the semiconductor production flow. The corporate headquarters of Nanometrics is in Milpitas, California.

Basis of Presentation – The accompanying condensed consolidated financial statements (“financial statements”) have been prepared on a consistent basis with the audited consolidated financial statements as of December 29, 2018 and include all normal recurring adjustments necessary to fairly state the information set forth therein. All significant intercompany accounts and transactions have been eliminated in consolidation.

The financial statements have been prepared in accordance with the regulations of the United States Securities and Exchange Commission (“SEC”) for interim periods in accordance with S-X Article 10, and, therefore, omit certain information and footnote disclosure necessary to present the statements in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The operating results for interim periods are not necessarily indicative of the operating results that may be expected for the entire year. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the fiscal year ended December 29, 2018, which were included in the Company’s Annual Report on Form 10-K filed with the SEC on February 25, 2019.

Fiscal Period – The Company uses a 52/53 week fiscal year ending on the last Saturday of the calendar year. All references to the quarter refer to Nanometrics’ fiscal quarter. The fiscal quarters reported herein are 13 week periods.

Use of Estimates – The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ materially from those estimates. Estimates are used for, but not limited to, revenue recognition, the provision for doubtful accounts, the provision for excess, obsolete, or slow-moving inventories, valuation of intangible and long-lived assets, warranty accruals, income taxes, valuation of stock-based compensation, and contingencies.

Except for the change below, the Company has consistently applied its accounting policies to all periods presented in these financial statements.

Leases - The Company adopted the new accounting standard Topic 842, Leases and all related amendments, as of December 30, 2018, the first day of its 2019 fiscal year, by electing to use the additional optional transition method permitted under the Topic of applying the new leases standard at the adoption date for all then-active leases and prospectively to leasing arrangements entered after the adoption date. The Company’s reporting for the comparative period presented in the financial statements continues to follow prior U.S. GAAP.

The main impact of Topic 842 was to increase the transparency and comparability of the Company’s financial statements by requiring the recognition of right of use assets (“ROU assets”) and lease liabilities on the Company’s balance sheet for leases classified as operating leases under which the Company is lessee. Under the Topic, disclosures are required to meet the objective of enabling users of the Company’s financial statements to assess the amount, timing, and uncertainty of cash flows arising from such leases.

The Company elected all available practical expedients, adopted an accounting policy to not recognize lease liabilities or ROU assets for short-term leases, and implemented internal controls and system functionality to enable the preparation of financial information upon adoption of Topic 842.

The Company has identified all its leases as operating leases, which primarily comprised leases for office space, data centers, colocation agreements, ISP services, logistics arrangements, equipment rental, and others. The Company’s lease accounting policy can be summarized into 4 categories, namely (1) identifying the lease, (2) classifying the lease, (3) measuring the lease, and (4) accounting for the lease.

Identifying the lease – The Company evaluates each service contract upon inception to determine whether it is, or contains, a lease. Such determination is made by applying judgment in evaluating each service contract within the context of the 5-step decision making process under Topic 842. The key concepts of the 5-step decision making process that the Company must evaluate can be summarized as: (1) is there an identified physical asset, (2) does the Company have the right to substantially all the economic benefits from the asset throughout the contract period, (3) does the Company control how and for what purpose the asset is used, (4) does the Company operate the asset, and (5) did the Company design the asset in a way that predetermines how it will be used.

For the service contract to be identified as a lease there must be an underlying physical asset (step 1) that the Company can obtain substantially all the economic benefits from (step 2) by exercising control over (step 3) throughout the lease term. The Company has been able to identify which of its contracts are leases through its evaluations of steps 1, 2, and 3.

Classifying the lease – Once the Company identifies a lease, it then applies judgment in evaluating the contract to determine how the lease should be classified. If any of the following criteria have been met the lease is classified as a financing lease, otherwise it is classified as an operating lease.

The Company has not entered into any contracts that transfer ownership of the underlying identified asset to the Company by the end of the lease term and there are only a small number of individually insignificant leases that contain a purchase option, none of which the Company intends to exercise. The Company has evaluated its contracts under these criteria and has determined that all such contracts are operating leases.

The Company does not reassess the lease classification after the commencement date unless (a) the contract is modified, and the modification is not accounted for as a separate contract, (b) there is a change in the lease term, or (c) there is a change in the assessment of whether the Company is reasonably certain to exercise an option to purchase the underlying asset.

Measuring the lease – Topic 842 requires the Company to record a ROU Asset and a lease liability at the lease commencement date for all leases. The Company does this by measuring and recording a lease liability equal to the present value of all remaining lease payments. The Company applies judgment in estimating the remaining lease term. For its offices, data centers, colocation agreements, ISP services and logistics it assesses the current life of the lease, defined renewal periods in the contract (if any), the strategic plan for maintaining (or replacing) the asset, among other factors in determining the future lease term when measuring the lease. While implementing Topic 842, the Company noted that none of its leases contained residual value guarantees, variable lease payments or any restrictions or covenants imposed by the lessors, outside of standard restrictions on subletting office space.

Under Topic 842, if the interest rate implicit in the lease is or can be known, the Company is required to use such rate. The rate implicit in the lease is not known for any of the Company’s leases, so the Company bases its interest rate on its incremental borrowing rate, using significant judgment to adjust its incremental borrowing rate to align with the term of the lease and the incremental borrowing rates in the countries in which the Company operates.

Once the Company has calculated the initial lease liability, it uses such measurement as the starting point for determining the ROU asset value. Any lease payments made to the lessor at or before the lease commencement date (for which the underlying service period has not expired) are added to the value of the initial lease liability along with any initial direct costs (such as broker’s commissions) incurred by the Company to arrive at the initial ROU asset value.

The Company initially measures the lease as of the lease commencement date, and except as noted below, it does not remeasure the lease. The Company applies significant judgment in considering all relevant factors that create an economic benefit (e.g.; contract-based, asset-based, entity-based, and market-based, among others) as of the commencement date in determining the initial lease term and future lease payments. For example, the Company exercises judgment in determining whether renewal periods will be exercised during the initial measurement process. If the Company believes it will exercise the renewal option, and the lease payments associated with the renewal periods are known or calculable, such renewal lease payments would be included in the initial measurement of the lease liability. Otherwise, even if the Company believes that it will exercise the renewal period, if the renewal payments are unknown or not calculable, they would not be included until they became known or calculable at which time the Company would remeasure the remaining lease payments similar to a lease modification.

At the implementation date, the Company measured its initial lease liability as $11.5 million for all leases in effect at such date. The Company determined it had made $0.1 million of lease payments to lessors at or before the implementation date for which the underlying service period had not expired; consequently, the Company initially recognized $11.6 million as a right to use asset at the implementation date. During the three-month period ended March 30, 2019, the Company recognized $0.7 million of lease liabilities and right of use assets related to contracts entered into during the period.

Generally, the Company does not reassess lease terms or purchase options, nor does it remeasure lease payments unless certain circumstances occur. The Company reassesses the lease term or its option to purchase the underlying asset only if and at the point in time that (a) there is a significant event of change in circumstances within the Company’s control that directly impacts the lease, (b) an event occurs that is written into the lease that obliges the Company to exercise an option, (c) the Company elects to exercise an option that it did not previously determine it was going to exercise, or (d) the Company decides to not exercise an option that it previously had determined it was going to exercise. The Company remeasures the lease payments if and at the point in time that (a) the lease is modified and the modification is not accounted for as a separate contract, (b) a contingency is resolved that causes variable lease payments to meet the definition of fixed lease payments, (c) the lease term changes, (d) the Company changes its assessment as to whether it will exercise an option to purchase the leased asset, or (e) there is a change in amounts probable of being owed under a residual guarantee value clause.

Accounting for the lease – Topic 842 requires the Company to recognize a ROU asset and a lease liability, initially measured as set forth above, for each of its operating leases in its statement of financial position. At adoption of Topic 842, any difference in the initial measurement of the ROU asset and the lease liability was charged to opening retained earnings as a cumulative effect adjustment; however, no such adjustment was recorded by the Company as the initial measurement resulted in no such difference. Topic 842 also requires the Company to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a straight-line basis in the statement of operations. The Company uses the effective interest rate method to accrete interest on the lease liability.

The components of lease expense for the three months ended March 30, 2019 were as follows (in thousands):

		Amount
Operating lease expense		$	847

Other information related to leases as of and for the three months ended March 30, 2019 was as follows (in thousands, except as indicated):

Supplemental Cash Flows Information	Amount
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used by operating leases	$	789

Right of use assets recognized in exchange for operating lease liabilities		698

Imputed interest - operating leases		120

Weighted average remaining lease term - operating leases (months)		62
Weighted average discount rate - operating leases (per annum)		4.86	%

The following table presents a maturity analysis of the Company’s leases (all of which are operating leases), showing the undiscounted annual cash flows for each of the periods presented with a reconciliation to the operating lease liabilities recognized in the Statement of Financial Position as of March 30, 2019 (in thousands):

Fiscal year	Amount
2019 (remaining nine months)	$	2,895
2020		3,113
2021		2,105
2022		1,545
2023		1,249
Thereafter		2,706
Total future minimum lease payments		13,613
Less: future interest		(2,106	)
Total	$	11,507

Reported as of March 30, 2019
Operating lease liability - short term	$	2,893
Operating lease liability - long term		8,614
Total	$	11,507

Future minimum lease payments as of December 29, 2018 for the leases then in effect, as reported under previous guidance, was as follows (in thousands):

Fiscal year	Amount
2019	$	3,002
2020		1,891
2021		1,051
2022		970
2023		750
Thereafter		696
Total	$	8,360