Basis Of Presentation	9 Months Ended
Sep. 30, 2022
Basis Of Presentation [Abstract]
Basis Of Presentation	1 - BASIS OF PRESENTATION The accounting and reporting policies of The First of Long Island Corporation (“Corporation”) reflect banking industry practice and conform to generally accepted accounting principles (“GAAP”) in the United States. The consolidated financial statements include the accounts of the Corporation and its wholly-owned subsidiary, The First National Bank of Long Island (“Bank”). The Bank has two wholly-owned subsidiaries: FNY Service Corp. and The First of Long Island Agency, Inc. The Bank and FNY Service Corp. jointly own another subsidiary, The First of Long Island REIT, Inc., a real estate investment trust. The consolidated entity is referred to as the “Corporation” and the Bank and its subsidiaries are collectively referred to as the “Bank.” All intercompany balances and amounts have been eliminated. For further information refer to the consolidated financial statements and notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2021. The consolidated financial information included herein as of and for the periods ended September 30, 2022 and 2021 is unaudited. However, such information reflects all adjustments which are, in the opinion of management, necessary for a fair statement of results for the interim periods. The December 31, 2021 consolidated balance sheet was derived from the Corporation's December 31, 2021 audited consolidated financial statements. When appropriate, items in the prior year financial statements are reclassified to conform to the current period presentation. Use of Estimates. In preparing the consolidated financial statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported asset and liability balances, revenue and expense amounts, and the disclosures provided, including disclosure of contingent assets and liabilities, based on available information. Actual results could differ significantly from those estimates. Information available which could affect these judgements include, but are not limited to, changes in interest rates, changes in the performance of the economy and changes in the financial condition of borrowers. Adoption of New Accounting Standards. In March 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2022-2 “Financial Instruments (Topic 326) Troubled Debt Restructurings and Vintage Disclosures” which affect entities that have adopted ASU 2016-13 “Measurement of Credit Losses on Financial Instruments” (“CECL”). The amendments in the ASU eliminate the troubled debt restructurings (“TDR”) recognition and measurement guidance and instead require that an entity evaluate whether the modification represents a new loan or a continuation of an existing loan, while also enhancing disclosure requirements. The amendments also require that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of CECL. Gross write-offs must be included in the vintage disclosures required by CECL. For entities that have adopted CECL such as the Corporation, the amendments in this ASU are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, and should generally be applied prospectively. Early adoption is permitted, including adoption in an interim period. Management adopted ASU 2022-2 in the second quarter of 2022 effective as of January 1, 2022 using the modified retrospective transition approach. Its adoption modified the Corporation’s disclosures but did not have a material impact on its financial position or results of operations. Disclosures pertaining to the ASU can be found in “Note 4 – Loans” of these unaudited consolidated financial statements.

Basis Of Presentation

9 Months Ended

Sep. 30, 2022

1 - BASIS OF PRESENTATION

The accounting and reporting policies of The First of Long Island Corporation (“Corporation”) reflect banking industry practice and conform to generally accepted accounting principles (“GAAP”) in the United States.

The consolidated financial statements include the accounts of the Corporation and its wholly-owned subsidiary, The First National Bank of Long Island (“Bank”). The Bank has two wholly-owned subsidiaries: FNY Service Corp. and The First of Long Island Agency, Inc. The Bank and FNY Service Corp. jointly own another subsidiary, The First of Long Island REIT, Inc., a real estate investment trust. The consolidated entity is referred to as the “Corporation” and the Bank and its subsidiaries are collectively referred to as the “Bank.” All intercompany balances and amounts have been eliminated. For further information refer to the consolidated financial statements and notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2021.

The consolidated financial information included herein as of and for the periods ended September 30, 2022 and 2021 is unaudited. However, such information reflects all adjustments which are, in the opinion of management, necessary for a fair statement of results for the interim periods. The December 31, 2021 consolidated balance sheet was derived from the Corporation's December 31, 2021 audited consolidated financial statements. When appropriate, items in the prior year financial statements are reclassified to conform to the current period presentation.

Use of Estimates. In preparing the consolidated financial statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported asset and liability balances, revenue and expense amounts, and the disclosures provided, including disclosure of contingent assets and liabilities, based on available information. Actual results could differ significantly from those estimates. Information available which could affect these judgements include, but are not limited to, changes in interest rates, changes in the performance of the economy and changes in the financial condition of borrowers.

Adoption of New Accounting Standards. In March 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2022-2 “Financial Instruments (Topic 326) Troubled Debt Restructurings and Vintage Disclosures” which affect entities that have adopted ASU 2016-13 “Measurement of Credit Losses on Financial Instruments” (“CECL”). The amendments in the ASU eliminate the troubled debt restructurings (“TDR”) recognition and measurement guidance and instead require that an entity evaluate whether the modification represents a new loan or a continuation of an existing loan, while also enhancing disclosure requirements. The amendments also require that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of CECL. Gross write-offs must be included in the vintage disclosures required by CECL. For entities that have adopted CECL such as the Corporation, the amendments in this ASU are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, and should generally be applied prospectively. Early adoption is permitted, including adoption in an interim period. Management adopted ASU 2022-2 in the second quarter of 2022 effective as of January 1, 2022 using the modified retrospective transition approach. Its adoption modified the Corporation’s disclosures but did not have a material impact on its financial position or results of operations. Disclosures pertaining to the ASU can be found in “Note 4 – Loans” of these unaudited consolidated financial statements.