2. Summary of Significant Accounting Policies

Use of Estimates

The preparation of unaudited consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Significant estimates are associated with accounts receivable, inventories, goodwill, intangible assets other than goodwill, long-lived assets, derivative financial instruments, deferred income taxes, warranty obligations, revenue recognized on an over time method, pension obligations and stock-based compensation expense. The Company bases its estimates on historical experience and various other assumptions, including in certain circumstances future projections that management believes to be reasonable under the circumstances. Although the Company regularly assesses these estimates, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they occur and become known.

Foreign Currency Translation

Certain transactions of the Company and its subsidiaries are denominated in currencies other than their functional currency.

Foreign currency exchange losses generated from the settlement and remeasurement of these transactions are recognized in earnings and presented within “Other expenses, net” in the Company’s unaudited Consolidated Statements of Operations. Net foreign currency transaction and remeasurement losses totaled $0.1 million and $2.0 million, respectively, during the three months ended December 31, 2018 and 2017.

Derivative Instruments

The Company has transactions and balances denominated in currencies other than the U.S. dollar. Most of these transactions or balances are denominated in Euros, British Pounds and a variety of Asian currencies. The Company enters into foreign exchange contracts to reduce its exposure to currency fluctuations. The forward contract arrangements that the Company enters into, typically mature in three months or less. These transactions do not qualify for hedge accounting. Net gains and losses related to these contracts are recorded as a component of "Other expenses, net" in the accompanying unaudited Consolidated Statements of Operations and are as follows for the three months ended December 31, 2018 and 2017 (in thousands):


	Three Months Ended
	December 31,
	2018		2017
Realized gains (losses) on derivatives not designated as hedging instruments	$	2,977	$	(1,673)

The fair values of the forward contracts are recorded in the Company’s accompanying unaudited Consolidated Balance Sheets as "Prepaid expenses and other current assets" and "Accrued expenses and other current liabilities". Foreign exchange contract assets and liabilities are measured and reported at fair value based on observable market inputs and classified within Level 2 of the fair value hierarchy described below due to a lack of an active market for these contracts.

Fair Value Measurements

The Company measures at fair value certain financial assets and liabilities, including cash equivalents and available for sale securities. FASB ASC 820, Fair Value Measurement and Disclosures, establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The following levels of inputs may be used to measure fair value:

Level 1 Inputs: Quoted prices in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset and liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.

Level 2 Inputs: Observable inputs other than prices included in Level 1, including quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 Inputs: Unobservable inputs that are significant to the fair value of the assets or liabilities and reflect an entity’s own assumptions in pricing assets or liabilities since they are supported by little or no market activity.

As of December 31, 2018, the Company had no assets or liabilities measured and recorded at fair value on a recurring basis using Level 3 inputs.

Recently Issued Accounting Pronouncements

In August 2018, the FASB issued ASU 2018-14, Disclosure Framework — Changes to the Disclosure Requirements for Defined Benefit Plans, which amends ASC 715 to add, remove, and clarify disclosure requirements related to defined benefit pension and other postretirement plans. The amendments require additional disclosure for the weighted-average interest crediting rates, a narrative description of the reasons for significant gains and losses, and an explanation of any other significant changes in the benefit obligation or plan assets. The amendment removes disclosure requirement for accumulated other comprehensive income expected to be recognized over the next year, information about plan assets to be returned to the entity, and the effects of a one-percentage-point change on the assumed health care costs and the effect of this change in rates on service cost, interest cost, and the benefit obligation for postretirement health care benefits. The ASU is effective for fiscal years ending after December 15, 2020. Early adoption is permitted. The ASU does not amend the interim disclosure requirements of ASC 715-20. The Company is currently evaluating the impact of this ASU.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, which amends ASC 820 to add and remove disclosure requirements related to fair value measurement. The amendments include new disclosure requirement for changes in unrealized gains or losses included in other comprehensive income (OCI) for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. The amendments eliminated disclosure requirements for amount of and reasons for transfers between Level 1 and Level 2, valuation processes for Level 3 fair value measurements, and policy for timing of transfers between levels of the fair value hierarchy. In addition, the amendments modified certain disclosure requirement to provide clarification or to promote appropriate exercise of discretion by entities. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods therein. Early adoption is permitted. The Company is currently evaluating the impact of this ASU.

In March 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which amends ASC 220 to add, remove, and clarify disclosure requirements related to reporting comprehensive income. This ASU gives entities the option to reclassify tax effects recorded in accumulated other comprehensive income as a result of tax reform to retained earnings. The entities have the option to apply the guidance retrospectively or in the period of adoption. The guidance requires entities to make new disclosures, regardless of whether they elect to reclassify tax effects. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption in any period is permitted. The Company expects to adopt the guidance during the first quarter of fiscal year 2020 and is evaluating the effect that ASU 2018-02 will have on its consolidated financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326), which amends ASC 326 to add, remove, and clarify disclosure requirements related to credit losses of financial instruments. The new guidance introduces a new "expected loss" impairment model which applies to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities and other financial assets. Entities are required to estimate expected credit losses over the life of financial assets and record an allowance against the assets’ amortized cost basis to present them at the amount expected to be collected. Additionally, the guidance amends the impairment model for available for sale debt securities and requires entities to determine whether all or a portion of the unrealized loss on such debt security is a credit loss. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2019. Early adoption of the newly issued guidance is permitted for fiscal years, and interim periods within those years, beginning after December 15, 2018. The standard should be applied as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The Company expects to adopt the guidance during the first quarter of fiscal year 2021 and is currently evaluating the impact of this guidance on its financial position and results of operations.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), an amendment of the FASB ASC. In accordance with the provisions of the newly issued guidance, a lessee should recognize at the inception of the arrangement a right-of-use asset and a corresponding lease liability initially measured at the present value of lease payments over the lease term. For finance leases, interest on a lease liability should be recognized separately from the amortization of the right-of-use asset, while for operating leases, total lease costs are recorded on a straight-line basis over the lease term. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying assets to forgo a recognition of right-of-use assets and corresponding lease liabilities and record a lease expense on a straight-line basis. Entities should determine at the inception of the arrangement whether a contract represents a lease or contains a lease which is defined as a right to control the use of identified property for a period of time in exchange for consideration. Additionally, entities should separate the lease components from the non-lease components and allocate the contract consideration on a relative standalone price basis in accordance with provisions of ASC Topic 606, Revenue from Contracts with Customers. The guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2018 and should be adopted via a modified retrospective approach with certain optional practical expedients that entities may elect to apply. The Company expects to adopt the guidance during the first quarter of fiscal year 2020 and is currently evaluating the impact of this guidance on its financial position and results of operations.

In May 2014, the FASB issued new accounting guidance for reporting revenue recognition, ASC 606 Revenue from Contracts with Customers (“ASC 606”). The guidance provides for the recognition of revenue when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. In addition, the guidance requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The guidance also specifies the accounting for certain costs to obtain and fulfill a contract, as codified in ASC 340-40 Accounting for Other Assets and Deferred Costs (“ASC 340-40”).

The Company adopted this standard effective October 1, 2018, using the modified retrospective method and has only applied this method to contracts that were not completed as of the effective date and all new contracts initiated on or after the effective date. Results for reporting periods beginning on or after October 1, 2018 are presented under ASC 606, while prior period amounts have not been restated and continue to be reported in accordance with the governing revenue recognition standards applicable to that period.

The impact of the cumulative effect of adopting ASC 606 effective October 1, 2018 on the Company’s Consolidated Balance Sheet is as follows:


	As Reported		Impact of Adopting		As Adopted
	September 30, 2018		ASC 606		October 1, 2018
Prepaid expenses and other current assets	$	31,741	$	350	$	32,091
Prepaid expenses and other current assets - discontinued operations		343		235		578

Other assets		5,294		1,483		6,777

Long-term deferred tax assets		43,798		403		44,201

Deferred revenue		25,884		2,850		28,734
Deferred revenue - discontinued operations		1,052		480		1,532

Accumulated deficit		(994,074)		(859)		(994,933)

Upon adoption the Company recorded a cumulative effect adjustment of $0.9 million, net of tax adjustment of $0.4 million, which resulted in an increase to the opening accumulated deficit balance on the Consolidated Balance Sheet, primarily driven by deferral of previously recognized revenue within the Brooks Life Sciences segment, offset by deferral of previously recognized commission expense within the Brooks Life Sciences segment and acceleration of revenue within the Brooks Semiconductor Solutions Group segment.

A portion of the adjustment related to the acceleration of revenue within the Brooks Semiconductor Solutions Group segment results from the change in the revenue recognition rules. Upon the adoption of ASC 606, the Company is no longer required to defer revenue in accordance with billing constraints defined in the contract with the customer. The change impacted the Company’s semiconductor contamination control solutions revenue stream as the Company is now permitted to recognize revenue in an amount equivalent to the transfer of control that has occurred. (Please refer to Note 13, “Revenue” for further information on when control is transferred). As a result, revenue previously deferred due to the contractual billing restraints that otherwise met the revenue recognition requirements was accelerated into the opening accumulated deficit balance resulting in an increase to accumulated deficit of $0.9 million as of October 1, 2018.

A portion of the adjustment related to the deferral of previously recognized revenue within the Brooks Life Science segment related to fees associated with registration of biological samples. This adjustment is derived from the new requirement to recognize revenue associated with certain sample life cycle management solutions transactions over time under ASC 606, while historically these transactions have been recorded at a point in time. Registration fees for these samples were previously recognized as revenue at a point in time upon completion of the registration and are now required to be recognized ratably over the period of benefit under ASC 606. As a result, upon adopting the standard the Company deferred previously recognized registration fee revenue for contracts not completed as of the effective date. The period of benefit associated with registration fees has been determined to be approximately 24 months resulting in the deferral of revenue historically recognized at a point in time over this period. This change resulted in a decrease to accumulated deficit of $3.1 million as of October 1, 2018.

A portion of the adjustment is related to the deferral of previously recognized commission expense within the Brooks Life Science segment. This portion of the adjustment is derived from the new requirement to recognize the cost to obtain certain transactions over time under ASC 340-40, while historically this expense has been recognized at a point in time. The standard requires certain costs incurred to obtain a contract to be recorded as an asset when incurred and expensed as the transfer of control of the underlying performance obligations occur or over the estimated customer life, depending on the nature of the underlying contract. As a result, upon adopting the standard the Company deferred previously recognized costs for contracts not completed as of the effective date. The estimated customer life has been determined to be approximately 60 months resulting in the deferral of costs historically expensed at a point in time over this period. This change resulted in an increase to accumulated deficit of $1.5 million as of October 1, 2018.

Additional changes to the Company’s accumulated deficit were made as the result of adopting ASC 606. These changes, which resulted in a cumulative decrease to accumulated deficit of $0.2 million as of October 1, 2018, were driven by the identification of additional performance obligations as well as changes in the transfer of control of certain performance obligations across both the Brooks Semiconductor Solutions Group and Brooks Life Science segments. The additional changes to the Company’s accumulated deficit included a cumulative decrease to accumulated deficit of $0.2 million from discontinued operations.

As the Company has adopted ASC 606 using the modified retrospective method, the standard requires disclosure of impact from adoption of the standard to each financial statement line item in the current reporting period. The impact of adoption of ASC 606 on the Company’s Consolidated Statement of Operations and Consolidated Balance sheet was as follows:


		Three Months Ended December 31, 2018
			Without adoption of		Effect of Change
	As Reported		ASC 606		Higher/(Lower)

Revenue	$	179,368	$	179,769	$	(401)
Cost of revenue		107,287		107,799		(512)
Gross profit		72,081		71,970		111
Operating expenses		66,748		66,544		204
Operating income	$	5,333	$	5,426	$	(93)


		December 31, 2018
			Without adoption of		Effect of Change
	As Reported		ASC 606		Higher/(Lower)
Prepaid expenses and other current assets	$	42,063	$	37,292	$	4,771

Other assets		22,304		21,025		1,279

Deferred revenue		31,091		28,944		2,147

Accumulated deficit		(987,725)		(991,628)		3,903

The difference between the reported results and the results without the adoption of ASC 606 was primarily driven from the elimination of revenue constraints due to billing limitations that resulted in acceleration of revenue within the Brooks Semiconductor Solutions Group segment and the deferral of fees associated with the registration of biological samples within the Brooks Life Science segment. Amortization of costs to obtain a contract capitalized through the cumulative effect adjustment described above have resulted in additional expense in the current period under ASC 606. Except as disclosed above, the adoption of ASC 606 did not have a significant impact on the Company’s Consolidated Statement of Operations and Consolidated Balance Sheet for the three months ended December 31, 2018.

Other

For further information with regard to the Company’s significant accounting policies, please refer to Note 2 "Summary of Significant Accounting Policies" to the Company’s consolidated financial statements included in the 2018 Annual Report on Form 10‑K.