Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The merger of GNBF with and into the Company was accounted for as a reverse acquisition using the acquisition method of accounting, in accordance with the provisions of FASB ASC 805 Business Combinations. As such, GNBF was the accounting acquirer and LINKBANCORP was the accounting acquiree. Accordingly, GNBF's historical financial statements are the historical financial statements of the combined company for all periods prior to September 18, 2021 (the "Merger Date"). The Company’s results of operations for the first nine months of 2022 include the results of operations of the combined company after the Merger Date. Results for periods before the Merger Date reflect only those consolidated results of GNBF and do not include the results of operations of LINKBANCORP. The number of shares issued and outstanding, earnings per share, additional paid-in capital, dividends paid and all references to share quantities of the Company have been retrospectively adjusted to reflect the equivalent number of shares issued to holders of GNBF common stock in the Merger. The assets and liabilities of LINKBANCORP as of the Merger Date have been recorded at their estimated fair value and added to those of GNBF. See Note 2. Merger for further information. The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation. The accounting and reporting practices of the Company conform to accounting principles generally accepted in the United States of America (GAAP) and to general practices within the banking industry. In the opinion of management, all adjustments (all of which are of a normal recurring nature) that are necessary for a fair statement are reflected in the unaudited condensed consolidated financial statements. The Company has evaluated events and transactions occurring subsequent to the consolidated balance sheet date of September 30, 2022 for items that should potentially be recognized or disclosed in these unaudited condensed consolidated financial statements. The evaluation was conducted through the date these unaudited condensed consolidated financial statements were issued.
Estimates	Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the allowance for loan losses, and the valuation of deferred tax assets.
Interim Financial Information	Interim Financial Information The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto, included in the Company's Annual Report on Form 10-K for the year ended December 31, 2021.
Loans Receivable	Loans Receivable Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of an allowance for loan losses and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) of the related loans. The Bank is generally amortizing these amounts over the contractual life of the loan. Premiums and discounts on purchased loans are amortized as adjustments to interest income using the effective yield method. The loans receivable portfolio is segmented into commercial and consumer loans. Commercial loans consist of the following classes: agriculture, commercial and industrial, commercial real estate, and municipal. Consumer loans consist of the following classes: residential real estate, and other consumer. The loan segments are based on collateral type. The accrual of interest on all portfolio classes, including troubled debt restructurings, is discontinued at the time the loan is more than ninety days delinquent unless the loan is well collateralized and in process of collection. Nonaccrual loans are reviewed for charge-off if more than ninety-days past due, except for residential loans and consumer loans. Residential loans are reviewed at 180 days and consumer loans are reviewed at 120 days past due. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of principal or interest is considered unlikely. All interest accrued but not collected for loans placed on nonaccrual or charged-off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. In addition, a loan should be in accordance with the contractual terms for a reasonable period, usually requiring a payment history of six months.
Goodwill Impairment	Goodwill Impairment Goodwill is not amortized but is reviewed for potential impairment on at least an annual basis, with testing between annual tests if an event occurs or circumstances change that could potentially reduce the fair value of a reporting unit. In conjunction with the IPO, the Company issued 5,101,205 shares of common stock and the Company's stock price subsequently decreased from an average closing price of $9.32 per share for the month of August 2022, to $7.50 per share upon completion of the IPO. In testing goodwill for impairment as of September 30, 2022, the Company determined that the fair value of its reporting unit exceeded its carrying value. Accordingly, there was no goodwill impairment at September 30, 2022.
Deferred Offering Costs	Deferred Offering Costs Deferred offering costs, consisting primarily of legal, accounting and other direct and incremental fees and costs related to the Company's initial public offering, are deferred. The deferred offering costs were offset against the proceeds received from the IPO upon the closing of the offering in September 2022.
Recent Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Not Yet Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This standard simplifies the test for goodwill impairment by eliminating the requirement to calculate the implied fair value of goodwill, which currently is Step 2 of the goodwill impairment test. Instead the goodwill impairment test will consist of a single quantitative step comparing the fair value of the reporting unit with its carrying amount. An entity should recognize a goodwill impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. The new standard is effective for annual and any interim goodwill impairment tests in reporting periods beginning after December 15, 2022. The adoption of this standard is not expected to have a material effect on the Company's operating results or financial condition. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, which changes the impairment model for most financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. This model is also applicable to off-balance sheet credit exposures not accounted for as insurance, such as loan commitments, standby letters of credit, financial guarantees, and other similar instruments. In addition, the amendments in ASU 2016-03 require credit losses on available-for-sale debt securities to be presented as a valuation allowance rather than as a direct write down. This Update is intended to improve financial reporting by requiring more timely recording of credit losses on these financial instruments. The underlying premise of the Update is that financial assets measured at amortized cost should be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The allowance for credit losses should reflect management’s current estimate of credit losses that are expected to occur over the remaining life of a financial asset. The income statement will be affected for the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. With certain exceptions, transition to the new requirements will be through a cumulative-effect adjustment to opening retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This Update is effective for SEC filers that are eligible to be smaller reporting companies, non-SEC filers, and all other companies, to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Company is evaluating the impact of ASU 2016-13 and has individuals from multiple disciplines working with a third-party vendor solution to assist with the application of ASU 2016-13, which includes historical data validation, methodology selection, and the development of policies, procedures and appropriate internal controls. The Company has identified ten distinct loan portfolios for which a model has been developed. During the remainder of 2022, the Company plans to perform parallel processing of our existing allowance for loan losses compared to the CECL model, perform sensitivity analysis, determine qualitative adjustments, and execute governance and approval processes. In addition, the Company will continue researching and resolving interpretive accounting issues in the ASU, evaluating and refining processes and related controls, finalizing various related accounting policies and reporting disclosures. The Company expects to recognize a one-time cumulative-effect adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective but cannot yet determine the magnitude of any such one-time adjustment or the overall impact of the new guidance on the consolidated financial statements, but recognizes that the impact of adoption and implementation could be material to the consolidated financial statements and related footnote disclosures. The Company anticipates the magnitude of the adoption of ASU 2016-13 and its related amendments will be influenced by the composition, characteristics, and quality of its loan and investment securities portfolios, and economic conditions and forecasts as of the date of adoption. For debt securities with other-than-temporary impairment ("OTTI"), the guidance will be applied prospectively. Existing PCI assets will be grandfathered and classified as purchased credit deteriorated ("PCD") assets at the date of adoption. The asset will be grossed up for the allowance for expected losses for all PCD assets at the date of adoption and will continue to recognize the noncredit discount in interest income based on the yield of such assets as of the adoption date. Subsequent changes in the expected credit losses will be recorded through the allowance. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which added to ASU 2020-04 on optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates, such as the Secured Overnight Financing Rate. Entities can elect not to apply certain modification accounting requirements to contracts affected by what the guidance calls “reference rate reform” if certain criteria are met. An entity that makes this election would not have to remeasure the contracts at the modification date or reassess a previous accounting determination. Also, entities can elect various optional expedients that would allow them to continue applying hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met, and can make a onetime election to sell and/or reclassify held-to-maturity debt securities that reference an interest rate affected by reference rate reform. The amendments in this ASU are effective for all entities upon issuance through December 31, 2022. The Company has identified our loan receivables that have an interest rate indexed to LIBOR and is currently assessing the appropriate transition path. As such, the Company does not have an estimate of the financial impact of this update but does not expect the impact to be material to the financial statements of the Company. In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses: Troubled Debt Restructurings and Vintage Disclosures, which eliminates accounting guidance for troubled debt restructurings ("TDRs") by creditors that have adopted ASU 2016-13 and its related amendments. The amendments require that an entity evaluate whether the loan modification represents a new loan or a continuation of an existing loan, and introduce new requirements related to modifications made to borrowers experiencing financial difficulty. The amendments also require public business entities to disclose current-period gross write-offs for financing receivables by year of origination in the vintage disclosures. For entities that have adopted ASU 2016-13, the amendments in this ASU are effective for fiscal years beginning after December 15, 2022. For entities that have not adopted ASU 2016-13, the amendments in this update are effective at the time the entity adopts ASU 2016-13. The adoption of this standard is not expected to have a material effect on the Company's operating results or financial condition.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2022

The merger of GNBF with and into the Company was accounted for as a reverse acquisition using the acquisition method of accounting, in accordance with the provisions of FASB ASC 805 Business Combinations. As such, GNBF was the accounting acquirer and LINKBANCORP was the accounting acquiree. Accordingly, GNBF's historical financial statements are the historical financial statements of the combined company for all periods prior to September 18, 2021 (the "Merger Date").

The Company’s results of operations for the first nine months of 2022 include the results of operations of the combined company after the Merger Date. Results for periods before the Merger Date reflect only those consolidated results of GNBF and do not include the results of operations of LINKBANCORP. The number of shares issued and outstanding, earnings per share, additional paid-in capital, dividends paid and all references to share quantities of the Company have been retrospectively adjusted to reflect the equivalent number of shares issued to holders of GNBF common stock in the Merger. The assets and liabilities of LINKBANCORP as of the Merger Date have been recorded at their estimated fair value and added to those of GNBF. See Note 2. Merger for further information.

The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation. The accounting and reporting

practices of the Company conform to accounting principles generally accepted in the United States of America (GAAP) and to general practices within the banking industry. In the opinion of management, all adjustments (all of which are of a normal recurring nature) that are necessary for a fair statement are reflected in the unaudited condensed consolidated financial statements.

The Company has evaluated events and transactions occurring subsequent to the consolidated balance sheet date of September 30, 2022 for items that should potentially be recognized or disclosed in these unaudited condensed consolidated financial statements. The evaluation was conducted through the date these unaudited condensed consolidated financial statements were issued.

Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the allowance for loan losses, and the valuation of deferred tax assets.

Interim Financial Information

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements.

In the opinion of management, all adjustments considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto, included in the Company's Annual Report on Form 10-K for the year ended December 31, 2021.

Loans Receivable

Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of an allowance for loan losses and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) of the related loans. The Bank is generally amortizing these amounts over the contractual life of the loan. Premiums and discounts on purchased loans are amortized as adjustments to interest income using the effective yield method.

The loans receivable portfolio is segmented into commercial and consumer loans. Commercial loans consist of the following classes: agriculture, commercial and industrial, commercial real estate, and municipal. Consumer loans consist of the following classes: residential real estate, and other consumer. The loan segments are based on collateral type.

The accrual of interest on all portfolio classes, including troubled debt restructurings, is discontinued at the time the loan is more than ninety days delinquent unless the loan is well collateralized and in process of collection. Nonaccrual loans are reviewed for charge-off if more than ninety-days past due, except for residential loans and consumer loans. Residential loans are reviewed at 180 days and consumer loans are reviewed at 120 days past due. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of principal or interest is considered unlikely.

All interest accrued but not collected for loans placed on nonaccrual or charged-off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. In addition, a loan should be in accordance with the contractual terms for a reasonable period, usually requiring a payment history of six months.

Goodwill Impairment

Goodwill is not amortized but is reviewed for potential impairment on at least an annual basis, with testing between annual tests if an event occurs or circumstances change that could potentially reduce the fair value of a reporting unit. In conjunction with

the IPO, the Company issued 5,101,205 shares of common stock and the Company's stock price subsequently decreased from an average closing price of $9.32 per share for the month of August 2022, to $7.50 per share upon completion of the IPO. In testing goodwill for impairment as of September 30, 2022, the Company determined that the fair value of its reporting unit exceeded its carrying value. Accordingly, there was no goodwill impairment at September 30, 2022.

Deferred Offering Costs

Deferred offering costs, consisting primarily of legal, accounting and other direct and incremental fees and costs related to the Company's initial public offering, are deferred. The deferred offering costs were offset against the proceeds received from the IPO upon the closing of the offering in September 2022.

Recent Accounting Pronouncements Not Yet Adopted

In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This standard simplifies the test for goodwill impairment by eliminating the requirement to calculate the implied fair value of goodwill, which currently is Step 2 of the goodwill impairment test. Instead the goodwill impairment test will consist of a single quantitative step comparing the fair value of the reporting unit with its carrying amount. An entity should recognize a goodwill impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. The new standard is effective for annual and any interim goodwill impairment tests in reporting periods beginning after December 15, 2022. The adoption of this standard is not expected to have a material effect on the Company's operating results or financial condition.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, which changes the impairment model for most financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. This model is also applicable to off-balance sheet credit exposures not accounted for as insurance, such as loan commitments, standby letters of credit, financial guarantees, and other similar instruments. In addition, the amendments in ASU 2016-03 require credit losses on available-for-sale debt securities to be presented as a valuation allowance rather than as a direct write down. This Update is intended to improve financial reporting by requiring more timely recording of credit losses on these financial instruments. The underlying premise of the Update is that financial assets measured at amortized cost should be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The allowance for credit losses should reflect management’s current estimate of credit losses that are expected to occur over the remaining life of a financial asset. The income statement will be affected for the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. With certain exceptions, transition to the new requirements will be through a cumulative-effect adjustment to opening retained earnings as of the beginning of the first reporting period in which the guidance is adopted. This Update is effective for SEC filers that are eligible to be smaller reporting companies, non-SEC filers, and all other companies, to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Company is evaluating the impact of ASU 2016-13 and has individuals from multiple disciplines working with a third-party vendor solution to assist with the application of ASU 2016-13, which includes historical data validation, methodology selection, and the development of policies, procedures and appropriate internal controls. The Company has identified ten distinct loan portfolios for which a model has been developed. During the remainder of 2022, the Company plans to perform parallel processing of our existing allowance for loan losses compared to the CECL model, perform sensitivity analysis, determine qualitative adjustments, and execute governance and approval processes. In addition, the Company will continue researching and resolving interpretive accounting issues in the ASU, evaluating and refining processes and related controls, finalizing various related accounting policies and reporting disclosures. The Company expects to recognize a one-time cumulative-effect adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective but cannot yet determine the magnitude of any such one-time adjustment or the overall impact of the new guidance on the consolidated financial statements, but recognizes that the impact of adoption and implementation could be material to the consolidated financial statements and related footnote disclosures. The Company anticipates the magnitude of the adoption of ASU 2016-13 and its related amendments will be influenced by the composition, characteristics, and quality of its loan and investment securities portfolios, and economic conditions and forecasts as of the date of adoption. For debt securities with other-than-temporary impairment ("OTTI"), the guidance will be applied prospectively. Existing PCI assets will be grandfathered and classified as purchased credit deteriorated ("PCD") assets at the date of adoption. The asset will be grossed up for the allowance for expected losses for all PCD assets at the date of adoption and will continue to recognize the noncredit discount in interest income based on the yield of such assets as of the adoption date. Subsequent changes in the expected credit losses will be recorded through the allowance.

In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, which added to ASU 2020-04 on optional expedients and exceptions to the U.S. GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates, such as the Secured Overnight Financing Rate. Entities can elect not to apply certain modification accounting requirements to contracts affected by what the guidance calls “reference rate reform” if certain criteria are met. An entity that makes this election would not have to remeasure the contracts at the modification date or reassess a previous accounting determination. Also, entities can elect various optional expedients that would allow them to continue applying hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met, and can make a onetime election to sell and/or reclassify held-to-maturity debt securities that reference an interest rate affected by reference rate reform. The amendments in this ASU are effective for all entities upon issuance through December 31, 2022. The Company has identified our loan receivables that have an interest rate indexed to LIBOR and is currently assessing the appropriate transition path. As such, the Company does not have an estimate of the financial impact of this update but does not expect the impact to be material to the financial statements of the Company.

In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses: Troubled Debt Restructurings and Vintage Disclosures, which eliminates accounting guidance for troubled debt restructurings ("TDRs") by creditors that have adopted ASU 2016-13 and its related amendments. The amendments require that an entity evaluate whether the loan modification represents a new loan or a continuation of an existing loan, and introduce new requirements related to modifications made to borrowers experiencing financial difficulty. The amendments also require public business entities to disclose current-period gross write-offs for financing receivables by year of origination in the vintage disclosures. For entities that have adopted ASU 2016-13, the amendments in this ASU are effective for fiscal years beginning after December 15, 2022. For entities that have not adopted ASU 2016-13, the amendments in this update are effective at the time the entity adopts ASU 2016-13. The adoption of this standard is not expected to have a material effect on the Company's operating results or financial condition.

- Definition

Disclosure of accounting policy for financing receivable.

+ References + Details