Summary of Significant Accounting Policies (Policies) |
6 Months Ended |
|---|---|
Jun. 30, 2023 | |
| Accounting Policies [Abstract] | |
| Recently Adopted Accounting Pronouncements | Recently Adopted Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (FASB) issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments (ASU 2016-13), which requires an entity to utilize a new impairment model known as the current expected credit loss (CECL) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial assets and certain other instruments, including but not limited to available-for-sale debt securities. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. ASU 2016-13 requires a cumulative effect adjustment to the balance sheet as of the beginning of the first reporting period in which the guidance is effective. The Company adopted ASU 2016-13 during the first quarter of fiscal year 2023. The adoption did not have a material impact on the Company's financial statements. Please see the description of the Company’s "Credit Losses” accounting policy in the “Significant Accounting Policies” section below. |
| Significant Accounting Policies | Significant Accounting Policies With the exception of the change from accounting for credit losses as a result of the adoption of ASU 2016-13, there have been no new or material changes to the Company’s significant accounting policies as described in its 2022 Annual Report that have had a material impact on the Company’s condensed financial statements and related notes. |
| Credit Losses | Credit Losses Accounts receivable. The allowance for doubtful accounts is based on the Company’s assessment of the Company’s best estimate of the amount of credit losses in customer accounts. The Company regularly reviews the allowance by considering factors such as existing contractual payment terms, historical experience, credit quality, the age of the accounts receivable balances, and current economic conditions that may affect a customer’s ability to pay. The allowance for doubtful accounts was not significant as of June 30, 2023 and December 31, 2022. Available-for-sale debt securities. The Company primarily holds U.S. government-sponsored enterprises debt securities, corporate debt securities, commercial paper, U.S. Treasury securities and money market funds. The Company regularly reviews the securities in an unrealized loss position and evaluates the current expected credit loss by considering factors such as historical experience, market data, financial condition and near-term prospects of the investee, the extent of the loss related to the credit of the issuer, and the expected cash flows from the security. The Company segments its portfolio based on the underlying risk profiles of the securities and has a zero-loss expectation for U.S. treasury and U.S. government-sponsored enterprises debt securities. The basis for this assumption is that these securities have consistently high credit ratings by rating agencies, have a long history with no credit losses, are explicitly guaranteed by a sovereign entity, which can print its own currency, and are denominated in a currency that is routinely held by central banks, used in international commerce, and commonly viewed as a reserve currency. Additionally, all of the Company’s investments in corporate debt securities are in securities with high-quality credit ratings, which have historically experienced low rates of default. |