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Fair Value Measurements | 6 Months Ended
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Mar. 31, 2021
Fair Value Disclosures [Abstract] |
Fair Value Measurements | 8. Fair Value Measurements Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants in the principal or most advantageous market for the asset or liability. There are three levels of inputs that are used to measure fair value:
| • | Level 1: quoted prices (unadjusted) in active markets for identical assets or liabilities;
| • | Level 2: inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities 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; or
| • | Level 3: unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Time deposits and corporate notes/bonds are classified within Level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. Foreign currency derivative contracts are typically classified within Level 2 of the fair value hierarchy. The principal market in which we execute our foreign currency derivatives is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants are usually large financial institutions. Our foreign currency derivatives’ valuation inputs are based on quoted prices and quoted pricing intervals from public data sources and do not involve management judgment. Our significant financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2021 and September 30, 2020 were as follows:
(in thousands) |  | March 31, 2021 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 115,533 |  |  | $ | — |  |  | $ | — |  |  | $ | 115,533 |
Derivative instruments |  |  | — |  |  |  | 6,846 |  |  |  | — |  |  |  | 6,846 |
Convertible note |  |  | — |  |  |  | — |  |  |  | 1,000 |  |  |  | 1,000 |
Total financial assets |  | $ | 115,533 |  |  | $ | 6,846 |  |  | $ | 1,000 |  |  | $ | 123,379 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward contracts |  |  | — |  |  |  | 4,259 |  |  |  | — |  |  |  | 4,259 |
Total financial liabilities |  | $ | — |  |  | $ | 4,259 |  |  | $ | — |  |  | $ | 4,259 |
(in thousands) |  | September 30, 2020 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 105,299 |  |  | $ | — |  |  | $ | — |  |  | $ | 105,299 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate notes/bonds |  |  | 59,099 |  |  |  | — |  |  |  | — |  |  |  | 59,099 |
Derivative instruments |  |  | — |  |  |  | 903 |  |  |  | — |  |  |  | 903 |
Total financial assets |  | $ | 164,398 |  |  | $ | 903 |  |  | $ | — |  |  | $ | 165,301 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward contracts |  |  | — |  |  |  | 1,073 |  |  |  | — |  |  |  | 1,073 |
Total financial liabilities |  | $ | — |  |  | $ | 1,073 |  |  | $ | — |  |  | $ | 1,073 |
Level 3 Debt Investments In the first quarter of 2021, we invested $1.0 million into a non-marketable convertible note. This debt security is classified as available-for-sale and is included in other assets on the Consolidated Balance Sheet. There were not any changes in the fair value of this level 3 investment in the three and six months ended March 31, 2021. Non-Marketable Equity Investments The carrying value of our non-marketable equity investments is recorded in other assets on the Consolidated Balance Sheets and totaled $8.9 million as of both March 31, 2021 and September 30, 2020.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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