Business and Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]
Business and Summary of Significant Accounting Policies	Business and Summary of Significant Accounting Policies Business First Guaranty Bancshares, Inc. ("First Guaranty") is a Louisiana corporation and a financial holding company headquartered in Hammond, LA. First Guaranty owns all of the outstanding shares of common stock of First Guaranty Bank. First Guaranty Bank (the "Bank") is a Louisiana-chartered commercial bank that offers a wide range of financial services and focuses on building client relationships and providing exceptional customer service. These services include consumer and commercial lending, mortgage loan origination, the issuance of credit cards and retail banking services. The Bank also maintains an investment portfolio comprised of government, government agency, corporate, and municipal securities. The Bank has thirty banking facilities and forty automated teller machines (ATMs) in Southeast, Southwest, Central and North Louisiana, North Central Texas, Kentucky and West Virginia. First Guaranty is subject to periodic examination by the Federal Reserve Board, the Federal Deposit Insurance Corporation (“FDIC”), and the Office of Financial Institutions (“OFI”), which assess, among other matters, First Guaranty’s financial condition, capital adequacy, asset quality, earnings, liquidity, management, and compliance with applicable laws and regulations. As a result of such examinations, regulatory agencies may, when deemed necessary, require corrective actions or impose other supervisory measures. As presented in the statement of income First Guaranty reported a net loss of $56.0 million for the year ended December 31, 2025. Further, as subsequently disclosed herein, non‑performing assets, consisting of non‑performing loans and other real estate owned, totaled $95.5 million as of December 31, 2025. Summary of significant accounting policies The accounting and reporting policies of First Guaranty conform to generally accepted accounting principles and to predominant accounting practices within the banking industry. The more significant accounting and reporting policies are as follows: Consolidation The consolidated financial statements include the accounts of First Guaranty Bancshares, Inc., and its wholly owned subsidiary, First Guaranty Bank. All significant intercompany balances and transactions have been eliminated in consolidation. Use of estimates The preparation of financial statements in conformity with generally accepted accounting principles 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 dates of the financial statements and the reported amounts of revenue and expense during the reporting periods. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near-term relate to the determination of the allowance for credit losses, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of the deferred tax asset, and the valuation of investment securities. In connection with the determination of the allowance for credit losses and real estate owned, First Guaranty obtains independent appraisals for significant properties. Cash and cash equivalents For purposes of reporting cash flows, cash and cash equivalents are defined as cash, due from banks, interest-bearing demand deposits with banks and federal funds sold with maturities of three months or less. Securities First Guaranty reviews its financial position, liquidity and future plans in evaluating the criteria for classifying investment securities. Debt securities that Management has the ability and intent to hold to maturity are classified as held to maturity and carried at cost, adjusted for amortization of premiums and accretion of discounts using methods approximating the interest method. Securities available for sale are stated at fair value. The unrealized difference, if any, between amortized cost and fair value of these AFS securities is excluded from income and is reported, net of deferred taxes, in accumulated other comprehensive income as a part of shareholders' equity. Details of other comprehensive income are reported in the consolidated statements of comprehensive income. Realized gains and losses on securities are computed based on the specific identification method and are reported as a separate component of other income. Amortization of premiums and discounts is included in interest income. Discounts and premiums related to debt securities are amortized using the effective interest rate method. Management evaluates securities for impairment at least on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. In estimating losses, management considers the extent that fair value has been less than cost and the financial condition and near term prospects of the issuer. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through an allowance for credit losses. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) impairment related to credit loss, which must be recognized in the income statement and 2) impairment related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis but cannot be more than the difference between amortized cost and the fair value of the security. Loans held for sale Mortgage loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income. Loans held for sale have primarily been fixed rate single-family residential mortgage loans under contract to be sold in the secondary market. In most cases, loans in this category are sold within thirty days. Buyers generally have recourse to return a purchased loan under limited circumstances. Recourse conditions may include early payment default, breach of representations or warranties and documentation deficiencies. Mortgage loans held for sale are generally sold with the mortgage servicing rights released. Gains or losses on sales of mortgage loans are recognized based on the differences between the selling price and the carrying value of the related mortgage loans sold. Loans Loans are stated at the principal amounts outstanding, net of unearned income and deferred loan fees. In addition to loans issued in the normal course of business, overdrafts on customer deposit accounts are considered to be loans and reclassified as such. Interest income on all classifications of loans is calculated using the simple interest method on daily balances of the principal amount outstanding. Accrual of interest is discontinued on a loan when Management believes, after considering economic and business conditions and collection efforts, the borrower's financial condition is such that reasonable doubt exists as to the full and timely collection of principal and interest. This evaluation is made for all loans that are 90 days or more contractually past due. When a loan is placed in nonaccrual status, all interest previously accrued but not collected is reversed against current period interest income. Income on such loans is then recognized only to the extent that cash is received and where the future collection of interest and principal is probable. Loans are returned to accrual status when, in the judgment of Management, all principal and interest amounts contractually due are reasonably assured to be collected within a reasonable time frame and when the borrower has demonstrated payment performance of cash or cash equivalents; generally for a period of 6 months. All loans, except mortgage loans, are considered past due if they are past due 30 days. Mortgage loans are considered past due when two consecutive payments have been missed. Loans that are past due 90-120 days and deemed uncollectible are charged-off. The loan charge off is a reduction of the allowance for credit losses. Credit Quality First Guaranty's credit quality indicators are pass, special mention, substandard, and doubtful. Loans included in the pass category are performing loans with satisfactory debt coverage ratios, collateral, payment history, and documentation requirements. Special mention loans have potential weaknesses that deserve close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects. Borrowers may be experiencing adverse operating trends (declining revenues or margins) or an ill proportioned balance sheet (e.g., increasing inventory without an increase in sales, high leverage, tight liquidity). Adverse economic or market conditions, such as interest rate increases or the entry of a new competitor, may also support a special mention rating. Nonfinancial reasons include management problems, pending litigation, an ineffective loan agreement or other material structural weakness, and any other significant deviation from prudent lending practices. A substandard loan is inadequately protected by the paying capacity of the obligor or of the collateral pledged, if any. Loans classified as substandard have a well-defined weakness. They are characterized by the distinct possibility that First Guaranty will sustain some loss if the deficiencies are not corrected. These loans require more intensive supervision. Substandard loans are generally characterized by current or expected unprofitable operations, inadequate debt service coverage, inadequate liquidity, or marginal capitalization. Repayment may depend on collateral or other credit risk mitigates. For some substandard loans, the likelihood of full collection of interest and principal may be in doubt and interest is no longer accrued. Consumer loans that are 90 days or more past due or that are nonaccrual are considered substandard. Doubtful loans have the weaknesses of substandard loans with the additional characteristic that the weaknesses make collection or liquidation in full questionable and there is a high probability of loss based on currently existing facts, conditions and values. Loan fees and costs Nonrefundable loan origination and commitment fees and direct costs associated with originating loans are deferred and recognized over the lives of the related loans as an adjustment to the loans' yield using the level yield method. Allowance for credit losses The allowance for credit losses is established through a provision for credit losses charged to expense. Loans are charged against the allowance for credit losses when management believes that the collectability of the principal is unlikely. The allowance is based on management’s evaluation of expected credit losses over the life of the loans in the portfolio, in accordance with ASC 326. The loan portfolio is divided into segments to evaluate expected losses. Loans that do not share risk characteristics with a segment are evaluated individually. Management estimates the allowance balance using available information such as past events, current conditions and reasonable forecasts. Adjustments to historical information are made using qualitative and qualitative factors developed by management. The following are general credit risk factors that affect our loan portfolio segments. These factors do not encompass all risks associated with each loan category. Construction and land development loans have risks associated with interim construction prior to permanent financing and repayment risks due to the future sale of developed property. Farmland and agricultural loans have risks such as weather, government agricultural policies, fuel and fertilizer costs, and market price volatility. One- to four-family residential, multifamily, and consumer credits are strongly influenced by employment levels, consumer debt loads and the general economy. Non-farm non-residential loans include both owner-occupied real estate and non-owner occupied real estate. Common risks associated with these properties is the ability to maintain tenant leases and keep lease income at a level able to service required debt and operating expenses. Commercial and industrial loans generally have non-real estate secured collateral which requires closer monitoring than real estate collateral. The allowance consists of specific, general, and unallocated components. The specific component relates to loans that are classified as doubtful, substandard, and individually evaluated for impairment. For such loans that are also classified as individually evaluated for impairment, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the loan is lower than the carrying value of that loan. The general component covers non-classified loans and special mention loans and is based on historical loss experience adjusted for qualitative factors. Qualitative factors include analysis of levels and trends in delinquencies, nonaccrual loans, charge-offs and recoveries, loan risk ratings, trends in volume and terms of loans, changes in lending policy, credit concentrations, portfolio stress test results, national and local economic trends, industry conditions, and other relevant factors. An unallocated component is maintained to cover uncertainties that could affect the estimate of probable losses. The allowance for credit losses on unfunded commitments represents expected credit losses over the contractual period for which First Guaranty is exposed to credit risk from a contractual obligation to extend credit. No allowance is recorded if there is an unconditional right to cancel the obligation. The allowance is reported as a component of Other Liabilities on the Consolidated Balance Sheets. Adjustments to the allowance for unfunded commitments are included in the provision for credit losses on the Consolidated Statements of Income. Goodwill and intangible assets Goodwill and intangible assets deemed to have indefinite lives are subject to annual impairment tests. Goodwill represents the excess of the purchase price over the fair value of the net identifiable assets acquired in an acquisition. First Guaranty's goodwill is tested for impairment on an annual basis, or more often if events or circumstances indicate that there may be impairment in accordance with ASC Topic 350. Identifiable intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or legal rights or because the assets are capable of being sold or exchanged either on their own or in combination with the related contract, asset or liability. First Guaranty's intangible assets primarily relate to core deposits and loan servicing assets related to the SBA portfolio. These core deposit intangibles are amortized on a straight-line basis over terms ranging from seven to fifteen years. Management periodically evaluates whether events or circumstances have occurred that impair this deposit intangible. Premises and equipment Premises and equipment are stated at cost, less accumulated depreciation. Depreciation is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the respective assets as follows: Buildings and improvements 10-40 years Equipment, fixtures and automobiles 3-10 years Expenditures for renewals and betterments are capitalized and depreciated over their estimated useful lives. Repairs, maintenance and minor improvements are charged to operating expense as incurred. Gains or losses on disposition, if any, are recorded as a separate line item in noninterest income on the Statements of Income. Other real estate Other real estate includes properties acquired through foreclosure or acceptance of deeds in lieu of foreclosure. These properties are recorded at the lower of the recorded investment in the property or its fair value less the estimated cost of disposition. Any valuation adjustments required prior to foreclosure are charged to the allowance for credit losses. Subsequent to foreclosure, losses on the periodic revaluation of the property are charged to current period earnings as other real estate expense or to the allowance for other real estate. Costs of operating and maintaining the properties are charged to other real estate expense as incurred. Any subsequent gains or losses on dispositions are credited or charged to income in the period of disposition. Off-balance sheet financial instruments In the ordinary course of business, First Guaranty has entered into commitments to extend credit, including commitments under credit card arrangements, commitments to fund commercial real estate, construction and land development loans secured by real estate, and performance standby letters of credit. Such financial instruments are recorded when they are funded. Income taxes First Guaranty and its subsidiary file a consolidated federal income tax return on a calendar year basis. In lieu of Louisiana state income tax, the Bank is subject to the Louisiana bank shares tax, which is included in noninterest expense in First Guaranty's consolidated financial statements. With few exceptions, First Guaranty is no longer subject to U.S. federal, state or local income tax examinations for years before 2021. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the deferred tax assets or liabilities are expected to be settled or realized. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be utilized. Comprehensive income Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available for sale securities, are reported as a separate component of the equity section of the balance sheet, such items along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are presented in the Statements of Comprehensive Income. Fair Value Measurements The fair value of a financial instrument is the current amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. Valuation techniques use certain inputs to arrive at fair value. Inputs to valuation techniques are the assumptions that market participants would use in pricing the asset or liability. They may be observable or unobservable. First Guaranty uses a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. See Note 20 for a detailed description of fair value measurements. Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (i) the assets have been isolated from First Guaranty, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (iii) First Guaranty does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Earnings per common share Earnings per share represents income available to common shareholders divided by the weighted average number of common shares outstanding during the period. No convertible shares of First Guaranty's stock are outstanding. Revenue Recognition First Guaranty has identified certain recurring revenue streams (including fee income, NSF/OD charges, and ATM/ Card fee income) related to noninterest income, which are within the scope of Topic 606, Revenue from Contracts with Customers. There are no significant judgments relating to the amount and timing of revenue recognition for revenue streams within the scope of Topic 606, Revenue from Contracts with Customer. Due to the nature of the services First Guaranty provides to its customers, it does not incur costs to obtain contracts, and there are no material incremental costs to fulfill these contacts that should be capitalized. There are no material contract assets or receivables as First Guaranty does not typically enter into long-term revenue contracts with customers. Operating Segments All of First Guaranty's operations are considered by management to be aggregated into one reportable operating segment. While the chief decision-maker monitors the revenue streams of the various products and services, the identifiable segments are not material. Operations are managed and financial performance is evaluated on a Company-wide basis.

First Guaranty Bancshares, Inc. ("First Guaranty") is a Louisiana corporation and a financial holding company headquartered in Hammond, LA. First Guaranty owns all of the outstanding shares of common stock of First Guaranty Bank. First Guaranty Bank (the "Bank") is a Louisiana-chartered commercial bank that offers a wide range of financial services and focuses on building client relationships and providing exceptional customer service. These services include consumer and commercial lending, mortgage loan origination, the issuance of credit cards and retail banking services. The Bank also maintains an investment portfolio comprised of government, government agency, corporate, and municipal securities. The Bank has thirty banking facilities and forty automated teller machines (ATMs) in Southeast, Southwest, Central and North Louisiana, North Central Texas, Kentucky and West Virginia.

First Guaranty is subject to periodic examination by the Federal Reserve Board, the Federal Deposit Insurance Corporation (“FDIC”), and the Office of Financial Institutions (“OFI”), which assess, among other matters, First Guaranty’s financial condition, capital adequacy, asset quality, earnings, liquidity, management, and compliance with applicable laws and regulations. As a result of such examinations, regulatory agencies may, when deemed necessary, require corrective actions or impose other supervisory measures.

As presented in the statement of income First Guaranty reported a net loss of $56.0 million for the year ended December 31, 2025. Further, as subsequently disclosed herein, non‑performing assets, consisting of non‑performing loans and other real estate owned, totaled $95.5 million as of December 31, 2025.

The preparation of financial statements in conformity with generally accepted accounting principles 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 dates of the financial statements and the reported amounts of revenue and expense during the reporting periods. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near-term relate to the determination of the allowance for credit losses, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of the deferred tax asset, and the valuation of investment securities. In connection with the determination of the allowance for credit losses and real estate owned, First Guaranty obtains independent appraisals for significant properties.

First Guaranty reviews its financial position, liquidity and future plans in evaluating the criteria for classifying investment securities. Debt securities that Management has the ability and intent to hold to maturity are classified as held to maturity and carried at cost, adjusted for amortization of premiums and accretion of discounts using methods approximating the interest method. Securities available for sale are stated at fair value. The unrealized difference, if any, between amortized cost and fair value of these AFS securities is excluded from income and is reported, net of deferred taxes, in accumulated other comprehensive income as a part of shareholders' equity. Details of other comprehensive income are reported in the consolidated statements of comprehensive income. Realized gains and losses on securities are computed based on the specific identification method and are reported as a separate component of other income. Amortization of premiums and discounts is included in interest income. Discounts and premiums related to debt securities are amortized using the effective interest rate method.

Management evaluates securities for impairment at least on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. In estimating losses, management considers the extent that fair value has been less than cost and the financial condition and near term prospects of the issuer. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through an allowance for credit losses. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) impairment related to credit loss, which must be recognized in the income statement and 2) impairment related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis but cannot be more than the difference between amortized cost and the fair value of the security.

Mortgage loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate. Net unrealized losses, if any, are recognized through a valuation allowance by charges to income. Loans held for sale have primarily been fixed rate single-family residential mortgage loans under contract to be sold in the secondary market. In most cases, loans in this category are sold within thirty days. Buyers generally have recourse to return a purchased loan under limited circumstances. Recourse conditions may include early payment default, breach of representations or warranties and documentation deficiencies. Mortgage loans held for sale are generally sold with the mortgage servicing rights released. Gains or losses on sales of mortgage loans are recognized based on the differences between the selling price and the carrying value of the related mortgage loans sold.

Loans are stated at the principal amounts outstanding, net of unearned income and deferred loan fees. In addition to loans issued in the normal course of business, overdrafts on customer deposit accounts are considered to be loans and reclassified as such. Interest income on all classifications of loans is calculated using the simple interest method on daily balances of the principal amount outstanding.

Accrual of interest is discontinued on a loan when Management believes, after considering economic and business conditions and collection efforts, the borrower's financial condition is such that reasonable doubt exists as to the full and timely collection of principal and interest. This evaluation is made for all loans that are 90 days or more contractually past due. When a loan is placed in nonaccrual status, all interest previously accrued but not collected is reversed against current period interest income. Income on such loans is then recognized only to the extent that cash is received and where the future collection of interest and principal is probable. Loans are returned to accrual status when, in the judgment of Management, all principal and interest amounts contractually due are reasonably assured to be collected within a reasonable time frame and when the borrower has demonstrated payment performance of cash or cash equivalents; generally for a period of 6 months. All loans, except mortgage loans, are considered past due if they are past due 30 days. Mortgage loans are considered past due when two consecutive payments have been missed. Loans that are past due 90-120 days and deemed uncollectible are charged-off. The loan charge off is a reduction of the allowance for credit losses.

Special mention loans have potential weaknesses that deserve close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects. Borrowers may be experiencing adverse operating trends (declining revenues or margins) or an ill proportioned balance sheet (e.g., increasing inventory without an increase in sales, high leverage, tight liquidity). Adverse economic or market conditions, such as interest rate increases or the entry of a new competitor, may also support a special mention rating. Nonfinancial reasons include management problems, pending litigation, an ineffective loan agreement or other material structural weakness, and any other significant deviation from prudent lending practices.

A substandard loan is inadequately protected by the paying capacity of the obligor or of the collateral pledged, if any. Loans classified as substandard have a well-defined weakness. They are characterized by the distinct possibility that First Guaranty will sustain some loss if the deficiencies are not corrected. These loans require more intensive supervision. Substandard loans are generally characterized by current or expected unprofitable operations, inadequate debt service coverage, inadequate liquidity, or marginal capitalization. Repayment may depend on collateral or other credit risk mitigates. For some substandard loans, the likelihood of full collection of interest and principal may be in doubt and interest is no longer accrued. Consumer loans that are 90 days or more past due or that are nonaccrual are considered substandard.

The allowance for credit losses is established through a provision for credit losses charged to expense. Loans are charged against the allowance for credit losses when management believes that the collectability of the principal is unlikely. The allowance is based on management’s evaluation of expected credit losses over the life of the loans in the portfolio, in accordance with ASC 326. The loan portfolio is divided into segments to evaluate expected losses. Loans that do not share risk characteristics with a segment are evaluated individually. Management estimates the allowance balance using available information such as past events, current conditions and reasonable forecasts. Adjustments to historical information are made using qualitative and qualitative factors developed by management.

The following are general credit risk factors that affect our loan portfolio segments. These factors do not encompass all risks associated with each loan category. Construction and land development loans have risks associated with interim construction prior to permanent financing and repayment risks due to the future sale of developed property. Farmland and agricultural loans have risks such as weather, government agricultural policies, fuel and fertilizer costs, and market price volatility. One- to four-family residential, multifamily, and consumer credits are strongly influenced by employment levels, consumer debt loads and the general economy. Non-farm non-residential loans include both owner-occupied real estate and non-owner occupied real estate. Common risks associated with these properties is the ability to maintain tenant leases and keep lease income at a level able to service required debt and operating expenses. Commercial and industrial loans generally have non-real estate secured collateral which requires closer monitoring than real estate collateral.

The allowance consists of specific, general, and unallocated components. The specific component relates to loans that are classified as doubtful, substandard, and individually evaluated for impairment. For such loans that are also classified as individually evaluated for impairment, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the loan is lower than the carrying value of that loan. The general component covers non-classified loans and special mention loans and is based on historical loss experience adjusted for qualitative factors. Qualitative factors include analysis of levels and trends in delinquencies, nonaccrual loans, charge-offs and recoveries, loan risk ratings, trends in volume and terms of loans, changes in lending policy, credit concentrations, portfolio stress test results, national and local economic trends, industry conditions, and other relevant factors. An unallocated component is maintained to cover uncertainties that could affect the estimate of probable losses.

The allowance for credit losses on unfunded commitments represents expected credit losses over the contractual period for which First Guaranty is exposed to credit risk from a contractual obligation to extend credit. No allowance is recorded if there is an unconditional right to cancel the obligation. The allowance is reported as a component of Other Liabilities on the Consolidated Balance Sheets. Adjustments to the allowance for unfunded commitments are included in the provision for credit losses on the Consolidated Statements of Income.

Goodwill and intangible assets deemed to have indefinite lives are subject to annual impairment tests. Goodwill represents the excess of the purchase price over the fair value of the net identifiable assets acquired in an acquisition. First Guaranty's goodwill is tested for impairment on an annual basis, or more often if events or circumstances indicate that there may be impairment in accordance with ASC Topic 350.

Identifiable intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or legal rights or because the assets are capable of being sold or exchanged either on their own or in combination with the related contract, asset or liability. First Guaranty's intangible assets primarily relate to core deposits and loan servicing assets related to the SBA portfolio. These core deposit intangibles are amortized on a straight-line basis over terms ranging from seven to fifteen years. Management periodically evaluates whether events or circumstances have occurred that impair this deposit intangible.

Expenditures for renewals and betterments are capitalized and depreciated over their estimated useful lives. Repairs, maintenance and minor improvements are charged to operating expense as incurred. Gains or losses on disposition, if any, are recorded as a separate line item in noninterest income on the Statements of Income.

Other real estate includes properties acquired through foreclosure or acceptance of deeds in lieu of foreclosure. These properties are recorded at the lower of the recorded investment in the property or its fair value less the estimated cost of disposition. Any valuation adjustments required prior to foreclosure are charged to the allowance for credit losses. Subsequent to foreclosure, losses on the periodic revaluation of the property are charged to current period earnings as other real estate expense or to the allowance for other real estate. Costs of operating and maintaining the properties are charged to other real estate expense as incurred. Any subsequent gains or losses on dispositions are credited or charged to income in the period of disposition.

In the ordinary course of business, First Guaranty has entered into commitments to extend credit, including commitments under credit card arrangements, commitments to fund commercial real estate, construction and land development loans secured by real estate, and performance standby letters of credit. Such financial instruments are recorded when they are funded.

First Guaranty and its subsidiary file a consolidated federal income tax return on a calendar year basis. In lieu of Louisiana state income tax, the Bank is subject to the Louisiana bank shares tax, which is included in noninterest expense in First Guaranty's consolidated financial statements. With few exceptions, First Guaranty is no longer subject to U.S. federal, state or local income tax examinations for years before 2021. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the deferred tax assets or liabilities are expected to be settled or realized. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be utilized.

Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available for sale securities, are reported as a separate component of the equity section of the balance sheet, such items along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are presented in the Statements of Comprehensive Income.

The fair value of a financial instrument is the current amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. Valuation techniques use certain inputs to arrive at fair value. Inputs to valuation techniques are the assumptions that market participants would use in pricing the asset or liability. They may be observable or unobservable. First Guaranty uses a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. See Note 20 for a detailed description of fair value measurements.

Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (i) the assets have been isolated from First Guaranty, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (iii) First Guaranty does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.

There are no significant judgments relating to the amount and timing of revenue recognition for revenue streams within the scope of Topic 606, Revenue from Contracts with Customer. Due to the nature of the services First Guaranty provides to its customers, it does not incur costs to obtain contracts, and there are no material incremental costs to fulfill these contacts that should be capitalized. There are no material contract assets or receivables as First Guaranty does not typically enter into long-term revenue contracts with customers.

All of First Guaranty's operations are considered by management to be aggregated into one reportable operating segment. While the chief decision-maker monitors the revenue streams of the various products and services, the identifiable segments are not material. Operations are managed and financial performance is evaluated on a Company-wide basis.