Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)	9 Months Ended
Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with Generally Accepted Accounting Principles in the United States of America (“U.S. GAAP”) for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, the unaudited condensed financial statements reflect all adjustments, which include only normal recurring adjustments necessary for the fair statement of the balances and results for the periods presented. Certain information and note disclosures normally included in the Company’s annual financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These unaudited condensed financial statement results are not necessarily indicative of results to be expected for the full fiscal year or any future period. A description of the Company’s significant accounting policies is included in the Company’s Annual Report. Other than as described below, there have been no material changes in the Company’s significant accounting policies to those previously disclosed in the Company’s Annual Report.
Use of Estimates	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 unaudited condensed financial statements, as well as the reported amounts of expenses during the reporting periods. These estimates and assumptions are based on the Company’s historical experience, and on various other factors that management believes are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. To the extent there are material differences between the estimates and actual results, the Company’s future results of operations will be affected.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified for consistency with the current period presentation. Interest income and interest expense are combined into one line item and presented net in the condensed statements of operations and comprehensive loss, whereas these line items were previously presented separately. Similarly, in the condensed statements of cash flows, amortization of premiums and accretion of discounts on marketable securities are now presented net, but previously had been presented on separate rows as amortization of premiums and non-cash interest income from marketable securities. These reclassifications had no effect on the reported results of operations.
Leases	Leases The Company accounts for its leases under Accounting Standards Codification (“ASC”) 842, Leases . Under this guidance, arrangements meeting the definition of a lease are classified as operating or financing leases and are recorded on the condensed consolidated balance sheet as both a right-of-use asset and a lease liability, calculated by discounting fixed lease payments over the lease term at the rate implicit in the lease or the Company’s incremental borrowing rate. Lease liabilities are increased by interest and reduced by payments each period, and right-of-use assets are amortized over the lease term. For operating leases, interest on the lease liability and the amortization of the right-of-use asset results in straight-line rent expense over the lease term. Variable lease expenses are recorded when incurred and not included in the measurement of right-of-use assets and lease liabilities. ASC 842 provides practical expedients for an entity’s ongoing accounting. In calculating right-of-use assets and lease liabilities, the Company has elected to combine lease and non-lease components. Additionally, the Company has elected to apply the practical expedient related to short-term leases (i.e., leases having initial terms of 12 months or less at commencement date) as an accounting policy election. For short-term leases, the Company will not recognize a right-of-use asset or lease liability, but instead will recognize lease payments as an expense on a straight-line basis over the lease term.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements ASC 842 requires lessees to recognize the liabilities related to all leases, including operating leases, with a term greater than 12 months on the balance sheet and also requires lessees and lessors to disclose key information about their leasing transactions. The Company adopted this guidance on January 1, 2022, using the modified retrospective method and the Company elected the package of practical expedients upon transition, which retained the lease classification for leases that existed prior to the adoption of this guidance. The Company recorded both a right-of-use asset and a lease liability of approximately $0.2 million on its condensed balance sheet upon the adoption of ASC 842. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”), which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in ASC 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted this guidance on January 1, 2022 with no material impact to the Company’s financial statements upon adoption.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which was codified with its subsequent amendments as ASC 326. ASC 326 seeks to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments, including trade receivables, and other commitments to extend credit held by a reporting entity at each reporting date. The amendments require an entity to replace the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects current expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The updated guidance is effective for the Company for annual reporting periods beginning after December 15, 2022, and early adoption is permitted. The Company’s marketable securities portfolio consists entirely of available-for-sale debt securities and, as such, it does not expect this guidance to have a material impact on its financial statements and disclosures upon adoption.

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)

9 Months Ended

Sep. 30, 2022

The accompanying unaudited condensed financial statements have been prepared in accordance with Generally Accepted Accounting Principles in the United States of America (“U.S. GAAP”) for interim financial information, the instructions to Form

10-Q

and Article 10 of Regulation

S-X.

Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, the unaudited condensed financial statements reflect all adjustments, which include only normal recurring adjustments necessary for the fair statement of the balances and results for the periods presented. Certain information and note disclosures normally included in the Company’s annual financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These unaudited condensed financial statement results are not necessarily indicative of results to be expected for the full fiscal year or any future period.

A description of the Company’s significant accounting policies is included in the Company’s Annual Report. Other than as described below, there have been no material changes in the Company’s significant accounting policies to those previously disclosed in the Company’s Annual Report.

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 unaudited condensed financial statements, as well as the reported amounts of expenses during the reporting periods. These estimates and assumptions are based on the Company’s historical experience, and on various other factors that management believes are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources.

Actual results may differ from these estimates under different assumptions or conditions. To the extent there are material differences between the estimates and actual results, the Company’s future results of operations will be affected.

Reclassifications

Certain prior year amounts have been reclassified for consistency with the current period presentation. Interest income and interest expense are combined into one line item and presented net in the condensed statements of operations and comprehensive loss, whereas these line items were previously presented separately. Similarly, in the condensed statements of cash flows, amortization of premiums and accretion of discounts on marketable securities are now presented net, but previously had been presented on separate rows as amortization of premiums and

non-cash

interest income from marketable securities. These reclassifications had no effect on the reported results of operations.

Leases

The Company accounts for its leases under Accounting Standards Codification (“ASC”) 842,

Leases

. Under this guidance, arrangements meeting the definition of a lease are classified as operating or financing leases and are recorded on the condensed consolidated balance sheet as both a

right-of-use

asset and a lease liability, calculated by discounting fixed lease payments over the lease term at the rate implicit in the lease or the Company’s incremental borrowing rate. Lease liabilities are increased by interest and reduced by payments each period, and

right-of-use

assets are amortized over the lease term. For operating leases, interest on the lease liability and the amortization of the

right-of-use

asset results in straight-line rent expense over the lease term. Variable lease expenses are recorded when incurred and not included in the measurement of

right-of-use

assets and lease liabilities.

ASC 842 provides practical expedients for an entity’s ongoing accounting. In calculating

right-of-use

assets and lease liabilities, the Company has elected to combine lease and

non-lease

components. Additionally, the Company has elected to apply the practical expedient related to short-term leases (i.e., leases having initial terms of 12 months or less at commencement date) as an accounting policy election. For short-term leases, the Company will not recognize a

right-of-use

asset or lease liability, but instead will recognize lease payments as an expense on a straight-line basis over the lease term.

Recently Adopted Accounting Pronouncements

ASC 842 requires lessees to recognize the liabilities related to all leases, including operating leases, with a term greater than 12 months on the balance sheet and also requires lessees and lessors to disclose key information about their leasing transactions. The Company adopted this guidance on January 1, 2022, using the modified retrospective method and the Company elected the package of practical expedients upon transition, which retained the lease classification for leases that existed prior to the adoption of this guidance. The Company recorded both a

right-of-use

asset and a lease liability of approximately $0.2 million on its condensed balance sheet upon the adoption of ASC 842.

In December 2019, the FASB issued ASU

No. 2019-12,

Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes

(“ASU

2019-12”),

which is intended to simplify various aspects related to accounting for income taxes. ASU

2019-12

removes certain exceptions to the general principles in ASC 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted this guidance on January 1, 2022 with no material impact to the Company’s financial statements upon adoption.

Recently Issued Accounting Pronouncements

In June 2016, the FASB issued

ASU 2016-13,

Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments

, which was codified with its subsequent amendments as ASC 326. ASC 326 seeks to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments, including trade receivables, and other commitments to extend credit held by a reporting entity at each reporting date. The amendments require an entity to replace the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects current expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The updated guidance is effective for the Company for annual reporting periods beginning after December 15, 2022, and early adoption is permitted. The Company’s marketable securities portfolio consists entirely of

available-for-sale

debt securities and, as such, it does not expect this guidance to have a material impact on its financial statements and disclosures upon adoption.