First Guaranty Bancshares (FGBI) 10-K 16 Mar 21 2020 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 15, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-37621
Entity Registrant Name	FIRST GUARANTY BANCSHARES, INC.
Entity Incorporation, State or Country Code	LA
Entity Tax Identification Number	26-0513559
Entity Address, Address Line One	400 East Thomas Street
Entity Address, City or Town	Hammond,
Entity Address, State or Province	LA
Entity Address, Postal Zip Code	70401
City Area Code	(985)
Local Phone Number	345-7685
Title of 12(b) Security	Common Stock, $1 par value
Trading Symbol	FGBI
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 63,708,198
Shares Outstanding (in shares)		9,741,253
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE: (1) Proxy Statement for the 2021 Annual Meeting of Shareholders of the Registrant (Part III).
Entity Central Index Key	0001408534
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents:
Cash and due from banks	$ 298,903	$ 66,511
Federal funds sold	702	914
Cash and cash equivalents	299,605	67,425
Investment securities:
Available for sale, at fair value	238,548	339,937
Held to maturity, at cost (estimated fair value of $0 and $86,817, respectively)	0	86,579
Investment securities	238,548	426,516
Federal Home Loan Bank stock, at cost	3,351	3,308
Loans held for sale	0	0
Loans, net of unearned income	1,844,135	1,525,490
Less: allowance for loan losses	24,518	10,929
Net loans	1,819,617	1,514,561
Premises and equipment, net	59,892	56,464
Goodwill	12,900	12,942
Intangible assets, net	6,587	7,166
Other real estate, net	2,240	4,879
Accrued interest receivable	11,933	8,412
Other assets	18,405	15,543
Total Assets	2,473,078	2,117,216
Deposits:
Noninterest-bearing demand	411,416	325,888
Interest-bearing demand	860,394	635,942
Savings	168,879	135,156
Time	725,629	756,027
Total deposits	2,166,318	1,853,013
Short-term advances from Federal Home Loan Bank	50,000	13,079
Repurchase agreements	6,121	6,840
Accrued interest payable	5,292	6,047
Long-term advances from Federal Home Loan Bank	3,366	3,533
Senior long-term debt	42,366	48,558
Junior subordinated debentures	14,777	14,737
Other liabilities	6,247	5,374
Total Liabilities	2,294,487	1,951,181
Common stock:
$1 par value - authorized 100,600,000 shares; issued 9,741,253 shares	9,741	9,741
Surplus	110,836	110,836
Retained earnings	57,367	43,283
Accumulated other comprehensive income (loss)	647	2,175
Total Shareholders' Equity	178,591	166,035
Total Liabilities and Shareholders' Equity	$ 2,473,078	$ 2,117,216

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Fair Value	$ 0	$ 86,817
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	100,600,000	100,600,000
Common stock, shares issued (in shares)	9,741,253	9,741,253

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income:
Loans (including fees)	$ 90,808	$ 78,886	$ 64,836
Deposits with other banks	404	2,956	612
Securities (including FHLB stock)	9,471	9,800	12,941
Federal funds sold	1	1	1
Total Interest Income	100,684	91,643	78,390
Interest Expense:
Demand deposits	6,089	10,447	8,531
Savings deposits	268	527	407
Time deposits	16,908	17,141	10,690
Borrowings	2,752	1,851	1,738
Total Interest Expense	26,017	29,966	21,366
Net Interest Income	74,667	61,677	57,024
Less: Provision for loan losses	14,877	4,860	1,354
Net Interest Income after Provision for Loan Losses	59,790	56,817	55,670
Noninterest Income:
Service charges, commissions and fees	2,571	2,808	2,988
ATM and debit card fees	3,022	2,254	2,122
Net gains (losses) on securities	14,791	(157)	(1,830)
Net gains on sale of loans	1,054	1,376	278
Other	2,342	2,018	1,722
Total Noninterest Income	23,780	8,299	5,280
Noninterest Expense:
Salaries and employee benefits	29,600	25,019	22,888
Occupancy and equipment expense	7,709	6,096	5,601
Other	20,724	16,104	14,786
Total Noninterest Expense	58,033	47,219	43,275
Income Before Income Taxes	25,537	17,897	17,675
Less: Provision for income taxes	5,219	3,656	3,462
Net Income	$ 20,318	$ 14,241	$ 14,213
Per Common Share:
Earnings (in dollars per share)	$ 2.09	$ 1.47	$ 1.47
Cash dividends paid (in dollars per share)	$ 0.64	$ 0.60	$ 0.58
Weighted Average Common Shares Outstanding (in shares)	9,741,253	9,695,131	9,687,123

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 20,318	$ 14,241	$ 14,213
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period	12,757	11,435	(8,508)
Reclassification adjustments for gains (losses) included in net income	(14,791)	353	1,830
Reclassification of OTTI losses included in net income	100	0	0
Change in unrealized gains (losses) on securities	(1,934)	11,788	(6,678)
Tax impact	406	(2,475)	1,402
Other comprehensive income (loss)	(1,528)	9,313	(5,276)
Comprehensive Income	$ 18,790	$ 23,554	$ 8,937

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock $1 Par	Surplus	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Balance at Dec. 31, 2017	$ 143,983	$ 9,687	$ 109,788	$ 26,064	$ (1,556)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of stranded tax effects in accumulated other comprehensive income	0			306	(306)
Net income	14,213			14,213
Other comprehensive income (loss)	(5,276)				(5,276)
Cash dividends on common stock	(5,636)			(5,636)
Balance at Dec. 31, 2018	147,284	9,687	109,788	34,947	(7,138)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,241			14,241
Common stock issued in private placement, 54,130 shares	1,000	54	1,048	(102)
Other comprehensive income (loss)	9,313				9,313
Cash dividends on common stock	(5,803)			(5,803)
Balance at Dec. 31, 2019	166,035	9,741	110,836	43,283	2,175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,318			20,318
Other comprehensive income (loss)	(1,528)				(1,528)
Cash dividends on common stock	(6,234)			(6,234)
Balance at Dec. 31, 2020	$ 178,591	$ 9,741	$ 110,836	$ 57,367	$ 647

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Statement of Stockholders' Equity [Abstract]
Cash dividends paid (in dollars per share) | $ / shares	$ 0.60
Common stock issued in private placement (in shares) | shares	54,130

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows From Operating Activities:
Net income	$ 20,318	$ 14,241	$ 14,213
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	14,877	4,860	1,354
Depreciation and amortization	3,781	3,057	3,289
Amortization/Accretion of investments	2,594	1,347	1,445
(Gain) loss on sale/call of securities	(14,791)	157	1,830
Other than temporary impairment charge on securities	100	0	0
Gain on sale of assets	(1,054)	(1,304)	(301)
Repossessed asset write downs, gain and losses on dispositions	1,245	90	(47)
FHLB stock dividends	(43)	(63)	(42)
Net decrease in loans held for sale	0	344	964
Change in other assets and liabilities, net	(3,268)	6,349	4,184
Net Cash Provided by Operating Activities	23,759	29,078	26,889
Cash Flows From Investing Activities:
Proceeds from maturities and calls of HTM securities	34,022	21,190	11,197
Proceeds from maturities, calls and sales of AFS securities	1,242,559	279,590	384,549
Funds Invested in AFS securities	(1,078,450)	(274,437)	(309,346)
Net increase in loans	(322,745)	(123,553)	(76,354)
Purchases of premises and equipment	(6,313)	(11,933)	(3,787)
Proceeds from sales of premises and equipment	127	12	46
Proceeds from sales of other real estate owned	2,345	550	484
Cash paid in excess of cash received in acquisition	0	(23,325)	0
Net Cash (Used In) Provided By Investing Activities	(128,455)	(131,906)	6,789
Cash Flows From Financing Activities:
Net increase in deposits	313,210	18,408	80,336
Net increase (decrease) in federal funds purchased and short-term borrowings	36,202	(28)	(15,500)
Proceeds from long-term borrowings, net of costs	0	32,465	0
Repayment of long-term borrowings	(6,302)	(3,754)	(2,941)
Common stock issued in private placement	0	1,000	0
Dividends paid	(6,234)	(5,803)	(5,636)
Net Cash Provided By Financing Activities	336,876	42,288	56,259
Net Increase (Decrease) In Cash and Cash Equivalents	232,180	(60,540)	89,937
Cash and Cash Equivalents at the Beginning of the Period	67,425	127,965	38,028
Cash and Cash Equivalents at the End of the Period	299,605	67,425	127,965
Noncash Activities:
Acquisition of real estate in settlement of loans	951	2,789	297
Transfer of securities from HTM to AFS	52,553	0	0
Cash Paid During the Period:
Interest on deposits and borrowed funds	26,772	27,871	19,902
Federal
Cash Paid During the Period:
Income taxes paid	4,800	3,250	2,400
State
Cash Paid During the Period:
Income taxes paid	$ 25	$ 23	$ 0

Business and Summary of Signifi

Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
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 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 state-chartered commercial bank that provides a diversified range of financial services to consumers and businesses in the communities in which it operates. 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-four banking offices, including one drive-up banking facility, and forty-six automated teller machines (ATMs) in Southeast Louisiana, Southwest Louisiana, Central Louisiana, North Louisiana and North Central Texas. 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. Acquisition Accounting Acquisitions are accounted for under the purchase method of accounting. Purchased assets, including identifiable intangibles, and assumed liabilities are recorded at their respective acquisition date fair values. If the fair value of net assets purchased exceeds the consideration given, a gain on acquisition is recognized. If the consideration given exceeds the fair value of the net assets received, goodwill is recognized. Fair values are subject to refinement for up to one year after the closing date of an acquisition as information relative to closing date fair values becomes available. Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date with no carryover of the related allowance for loan losses. See Acquired Loans section below for accounting policy regarding loans acquired in a business combination. 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 loan losses, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, and the valuation of investment securities. In connection with the determination of the allowance for loan 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 other-than-temporary impairment ("OTTI") at least on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. In estimating other-than-temporary losses, management considers the length of time and 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 earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) OTTI related to credit loss, which must be recognized in the income statement and 2) OTTI 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. 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 loan losses. Troubled Debt Restructurings (TDRs) TDRs are loans in which the borrower is experiencing financial difficulty at the time of restructuring, and the Bank has granted a concession to the borrower. TDRs are undertaken in order to improve the likelihood of recovery on the loan and may take the form of modifications made with the stated interest rate lower than the current market rate for new debt with similar risk, other modifications to the structure of the loan that fall outside of normal underwriting policies and procedures, or in limited circumstances forgiveness of principal and / or interest. TDRs can involve loans remaining on non-accrual, moving to non-accrual, or continuing on accrual status, depending on the individual facts and circumstances of the borrower. TDRs are subject to policies governing accrual and non-accrual evaluation consistent with all other loans as discussed in the "Loans" section above. All loans with the TDR designation are considered to be impaired, even if they are accruing. First Guaranty's policy is to evaluate TDRs that have subsequently been restructured and returned to market terms after 6 months of performance. The evaluation includes a review of the loan file and analysis of the credit to assess the loan terms, including interest rate to insure such terms are consistent with market terms. The loan terms are compared to a sampling of loans with similar terms and risk characteristics, including loans originated by First Guaranty and loans lost to a competitor. The sample provides a guide to determine market terms pursuant to ASC 310-40-50-2. The loan is also evaluated at that time for impairment. A loan determined to be restructured to market terms and not considered impaired will no longer be disclosed as a TDR in the years following the restructuring. These loans will continue to be individually evaluated for impairment. A loan determined to either be restructured to below market terms or to be impaired will remain a TDR. 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. A loan is considered impaired when, based on current information and events, it is probable that First Guaranty will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by Management in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis for commercial and construction loans by either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's obtainable market price or the fair value of the collateral if the loan is collateral dependent. This process is only applied to impaired loans or relationships in excess of $500,000. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, individual consumer and residential loans are not separately identified for impairment disclosures, unless such loans are the subject of a restructuring agreement. Loans that have been restructured in a troubled debt restructuring will continue to be evaluated individually for impairment, including those no longer requiring disclosure. Acquired Loans Loans are recorded at estimated fair value on their purchase date with no carryover of the related allowance for loan losses. Acquired loans are segregated between those with deteriorated credit quality at acquisition and those deemed as performing. To make this determination, Management considers such factors as past due status, nonaccrual status, credit risk ratings, interest rates and collateral position. The fair value of acquired loans deemed performing is determined by discounting cash flows, both principal and interest, for each pool at prevailing market interest rates as well as consideration of inherent potential losses. The difference between the fair value and principal balances due at acquisition date, the fair value discount, is accreted into income over the estimated life of each loan pool. Loans acquired in a business combination are recorded at their estimated fair value on their purchase date with no carryover of the related allowance for loan losses. Performing acquired loans are subsequently evaluated for any required allowance at each reporting date. An allowance for loan losses is calculated using a similar methodology for originated loans. 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 loan losses The allowance for loan losses is established through a provision for loan losses charged to expense. Loans are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely. The allowance, which is based on evaluation of the collectability of loans and prior loan loss experience, is an amount that, in the opinion of Management, reflects the risks inherent in the existing loan portfolio and exists at the reporting date. The evaluations take into consideration a number of subjective factors including changes in the nature and volume of the loan portfolio, historical losses, overall portfolio quality, review of specific problem loans, current economic conditions that may affect a borrower's ability to pay including the impact of the COVID-19 pandemic, adequacy of loan collateral and other relevant factors. In addition, regulatory agencies, as an integral part of their examination process, periodically review the estimated losses on loans. Such agencies may require additional recognition of losses based on their judgments about information available to them at the time of their examination. The following are general credit risk factors that affect First Guaranty's 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. 1-4 family, multi-family, 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. Although Management uses available information to recognize losses on loans, because of uncertainties associated with local economic conditions, collateral values and future cash flows on impaired loans, it is reasonably possible that a material change could occur in the allowance for loan losses in the near term. However, the amount of the change that is reasonably possible cannot be estimated. The evaluation of the adequacy of loan collateral is often based upon estimates and appraisals. Because of changing economic conditions, the valuations determined from such estimates and appraisals may also change. Accordingly, First Guaranty may ultimately incur losses that vary from Management's current estimates. Adjustments to the allowance for loan losses will be reported in the period such adjustments become known or can be reasonably estimated. All loan losses are charged to the allowance for loan losses when the loss actually occurs or when the collectability of the principal is unlikely. Recoveries are credited to the allowance at the time of recovery. The allowance consists of specific, general, and unallocated components. The specific component relates to loans that are classified as doubtful, substandard, and impaired. For such loans that are also classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. Also, a specific reserve is allocated for syndicated loans. 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,non-accrual 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 including the impact of COVID-19, 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 loan losses is reviewed on a monthly basis. The monitoring of credit risk also extends to unfunded credit commitments, such as unused commercial credit lines and letters of credit. A reserve is established as needed for estimates of probable losses on such commitments. 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 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 loan 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 2017. 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. In December of 2019, First Guaranty issued a pro rata, 10% common stock dividend. The shares issued for the stock dividend have been retrospectively factored into the calculation of earnings per share as well as cash dividends paid on common stock and represented on the face of the financial statements. No convertible shares of First Guaranty's stock are outstanding. Operating Segments All of First Guaranty's operations are considered by management to be aggregated into one reportable operating segment. While the chief decision-makers monitor 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. Reclassifications Certain reclassifications have been made to prior year end financial statements in order to conform to the classification adopted for reporting in 2020.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, "Financial Instruments- Credit Losses: Measurement of Credit Losses on Financial Instruments". This ASU amends guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. The ASU amendments require the measurement of all expected credit losses for financial assets held at the reporting date be based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU requires assets held at cost basis to reflect the company's current estimate of all expected credit losses. For available for sale debt securities, credit losses should be presented as an allowance rather than as a write-down. In addition, this ASU amends the accounting for purchased financial assets with credit deterioration. On October 16, 2019, the FASB approved an effective date delay applicable to smaller reporting companies until fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. First Guaranty is a smaller reporting company and has delayed the adoption of ASU 2016-13. In December 2019, the FASB issued ASU 2019-12, "Simplifying the Accounting for Income Taxes (Topic 740)." The amendments in this ASU simplify the accounting for income taxes by removing certain exceptions to the general principles in the Topic 740. The amendments also improve the consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. The amendments in the ASU are effective for fiscal years and interim periods beginning after December 15, 2020. First Guaranty is currently assessing the impact of adoption of this guidance.

Merger Transaction

Merger Transaction	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Merger Transaction	Merger Transaction Effective at the close of business on November 7, 2019, First Guaranty completed its acquisition of 100% of the outstanding shares of Union Bancshares, Incorporated, a Louisiana corporation ("Union"), a single bank holding company headquartered in Marksville, Louisiana and its wholly owned subsidiary, Union Bank for $43.4 million in cash. This acquisition allowed First Guaranty to expand its presence into the Central Louisiana market area. The purchase price resulted in approximately $9.4 million in goodwill and $4.2 million in core deposit intangible, none of which is deductible for tax purposes. First Guaranty accounts for business combinations under the acquisition method in accordance with ASC Topic 805, Business Combinations. Accordingly, for each transaction, the purchase price is allocated to the fair value of the assets acquired and liabilities assumed as of the date of the acquisition. In conjunction with the adoption of ASU 2015-16, upon receipt of final fair value estimates during the measurement period, which must be within one year of the acquisition dates, First Guaranty records any adjustments to the preliminary fair value estimates in the reporting period in which the adjustments are determined. First Guaranty finalized the purchase price allocations related to the Union acquisition during the fourth quarter of 2020. Based on management's valuation of tangible and intangible assets acquired and liabilities assumed, the purchase price for the Union acquisition is allocated in the table below. (in thousands) Union Bancshares, Incorporated Cash and due from banks $ 20,063 Securities available for sale 38,813 Loans 184,344 Premises and equipment 7,223 Goodwill 9,428 Intangible assets 4,213 Other real estate 1,595 Other assets 9,480 Total assets acquired $ 275,159 Deposits 205,078 FHLB borrowings 16,617 Repurchase agreements 6,863 Other liabilities 3,218 Total liabilities assumed $ 231,776 Net assets acquired $ 43,383

Cash and Due from Banks

Cash and Due from Banks	12 Months Ended
	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Cash and Due from Banks	Cash and Due from BanksCertain reserves are required to be maintained at the Federal Reserve Bank. There was no reserve requirement as of December 31, 2020 and 2019. At December 31, 2020 First Guaranty had no accounts at correspondent banks, excluding the Federal Reserve Bank, that exceeded the FDIC insurable limit of $250,000. At December 31, 2019 First Guaranty had only two account at correspondent banks, excluding the Federal Reserve Bank, that exceeded the FDIC insurable limit of $250,000. This account was over the insurable limit by $5.7 million.

Securities

Securities	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Securities	Securities A summary comparison of securities by type at December 31, 2020 and 2019 is shown below. December 31, 2020 December 31, 2019 (in thousands) Amortized Cost Gross Gross Fair Value Amortized Cost Gross Gross Fair Value Available for sale: U.S. Treasuries $ 3,000 $ — $ — $ 3,000 $ — $ — $ — $ — U.S. Government Agencies 169,986 77 (405) 169,658 16,380 15 (2) 16,393 Corporate debt securities 36,153 604 (268) 36,489 94,561 1,110 (302) 95,369 Municipal bonds 27,381 781 — 28,162 30,297 1,870 (14) 32,153 Collateralized mortgage obligations — — — — 16,400 40 (43) 16,397 Mortgage-backed securities 1,208 31 — 1,239 179,546 317 (238) 179,625 Total available for sale securities $ 237,728 $ 1,493 $ (673) $ 238,548 $ 337,184 $ 3,352 $ (599) $ 339,937 Held to maturity: U.S. Government Agencies $ — $ — $ — $ — $ 18,175 $ — $ (32) $ 18,143 Municipal bonds — — — — 5,107 182 — 5,289 Mortgage-backed securities — — — — 63,297 200 (112) 63,385 Total held to maturity securities $ — $ — $ — $ — $ 86,579 $ 382 $ (144) $ 86,817 The scheduled maturities of securities at December 31, 2020, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities due to call or prepayments. Mortgage-backed securities are not due at a single maturity because of amortization and potential prepayment of the underlying mortgages. For this reason they are presented separately in the maturity table below. December 31, 2020 (in thousands) Amortized Cost Fair Value Available for sale: Due in one year or less $ 9,635 $ 9,670 Due after one year through five years 6,994 6,995 Due after five years through 10 years 67,675 68,412 Over 10 years 152,216 152,232 Subtotal 236,520 237,309 Mortgage-backed Securities 1,208 1,239 Total available for sale securities $ 237,728 $ 238,548 The following is a summary of the fair value of securities with gross unrealized losses and an aging of those gross unrealized losses at December 31, 2020. December 31, 2020 Less Than 12 Months 12 Months or More Total (in thousands) Number Fair Value Gross Number Fair Value Gross Number Fair Value Gross Available for sale: U.S. Treasuries — $ — $ — — $ — $ — — $ — $ — U.S. Government Agencies 12 131,455 (405) — — — 12 131,455 (405) Corporate debt securities 17 10,286 (144) 4 1,254 (124) 21 11,540 (268) Municipal bonds 1 66 — — — — 1 66 — Mortgage-backed securities — — — 6 11 — 6 11 — Total available for sale securities 30 $ 141,807 $ (549) 10 $ 1,265 $ (124) 40 $ 143,072 $ (673) The following is a summary of the fair value of securities with gross unrealized losses and an aging of those gross unrealized losses at December 31, 2019. December 31, 2019 Less Than 12 Months 12 Months or More Total (in thousands) Number Fair Value Gross Number Fair Value Gross Number Fair Value Gross Available for sale: U.S. Treasuries — $ — $ — — $ — $ — — $ — $ — U.S. Government Agencies 1 4,398 (1) 1 149 (1) 2 4,547 (2) Corporate debt securities 42 21,269 (174) 12 3,184 (128) 54 24,453 (302) Municipal bonds 9 4,285 (14) — — — 9 4,285 (14) Collateralized mortgage obligations 12 10,022 (43) — — — 12 10,022 (43) Mortgage-backed securities 57 91,753 (186) 9 12,121 (52) 66 103,874 (238) Total available for sale securities 121 $ 131,727 $ (418) 22 $ 15,454 $ (181) 143 $ 147,181 $ (599) Held to maturity: U.S. Government Agencies 2 $ 2,177 $ (2) 8 $ 15,965 $ (30) 10 $ 18,142 $ (32) Municipal bonds — — — 1 50 — 1 50 — Mortgage-backed securities 7 8,880 (58) 10 11,343 (54) 17 20,223 (112) Total held to maturity securities 9 $ 11,057 $ (60) 19 $ 27,358 $ (84) 28 $ 38,415 $ (144) As of December 31, 2020, 40 of First Guaranty's debt securities had unrealized losses totaling 0.5% of the individual securities' amortized cost basis and 0.3% of First Guaranty's total amortized cost basis of the investment securities portfolio. 10 of the 40 securities had been in a continuous loss position for over 12 months at such date. The 10 securities had an aggregate amortized cost basis of $1.4 million and an unrealized loss of $0.1 million at December 31, 2020. Management has the intent and ability to hold these debt securities until maturity or until anticipated recovery. Securities are evaluated for other-than-temporary impairment at least quarterly and more frequently when economic or market conditions warrant such evaluation. Consideration is given to (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, (iii) the recovery of contractual principal and interest and (iv) the intent and ability of First Guaranty to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. Investment securities issued by the U.S. Government and Government sponsored enterprises with unrealized losses and the amount of unrealized losses on those investment securities that are the result of changes in market interest rates will not be other-than-temporarily impaired. First Guaranty has the ability and intent to hold these securities until recovery, which may not be until maturity. Corporate debt securities in a loss position consist primarily of corporate bonds issued by businesses in the financial, insurance, utility, manufacturing, industrial, consumer products and oil and gas industries. There was one security with an other-than-temporary impairment loss at December 31, 2020. First Guaranty believes that the remaining issuers will be able to fulfill the obligations of these securities based on evaluations described above. First Guaranty has the ability and intent to hold these securities until they recover, which could be at their maturity dates. There was one other-than-temporary impairment loss of $100,000 recognized on securities during the years ended December 31, 2020. The security had an original book value of $0.1 million and was in default. First Guaranty's analysis of the company and the current market value of the security resulted in the determination that a write down was warranted. There were no other-than-temporary impairment losses recognized on securities during the years ended December 31, 2019, and 2018. The following table presents a roll-forward of the amount of credit losses on debt securities held by First Guaranty for which a portion of OTTI was recognized in other comprehensive income for the year ended December 31, 2020, 2019, and 2018: (in thousands) Year Ended December 31, 2020 Year Ended December 31, 2019 Year Ended December 31, 2018 Beginning balance of credit losses at beginning of year $ — $ 60 $ 60 Other-than-temporary impairment credit losses on securities not previously OTTI 100 — — Increases for additional credit losses on securities previously determined to be OTTI — — — Reduction for increases in cash flows — — — Reduction due to credit impaired securities sold or fully settled — (60) — Ending balance of cumulative credit losses recognized in earnings at end of year $ 100 $ — $ 60 In 2020, 2019 and 2018 there were no other-than-temporary impairment credit losses on securities for which First Guaranty had previously recognized OTTI. For securities that have indications of credit related impairment, management analyzes future expected cash flows to determine if any credit related impairment is evident. Estimated cash flows are determined using management's best estimate of future cash flows based on specific assumptions. The assumptions used to determine the cash flows were based on estimates of loss severity and credit default probabilities. Management reviews reports from credit rating agencies and public filings of issuers. At December 31, 2020 and 2019 the carrying value of pledged securities totaled $184.0 million and $212.8 million, respectively. Gross realized gains on sales of securities were $14.7 million, $0.8 million and $0.1 million for the years ended December 31, 2020, 2019 and 2018, respectively. Gross realized losses were $0.1 million, $1.1 million and $1.9 million for the years ended December 31, 2020, 2019 and 2018. The tax applicable to these transactions amounted to $3.1 million, $(79,000), and $(0.4) million for 2020, 2019 and 2018, respectively. Proceeds from sales of securities classified as available for sale amounted to $394.9 million, $90.5 million and $114.5 million for the years ended December 31, 2020, 2019 and 2018, respectively. Net unrealized gains on available for sale securities included in accumulated other comprehensive income (loss) ("AOCI"), net of applicable income taxes, totaled $0.6 million at December 31, 2020. At December 31, 2019 net unrealized gains included in AOCI, net of applicable income taxes, totaled $2.2 million. During 2020 net gains, net of tax, reclassified out of AOCI into earnings totaled $11.7 million. During 2019 net losses, net of tax, reclassified out of AOCI into earnings totaled $0.3 million. At December 31, 2020, First Guaranty's exposure to investment securities issuers that exceeded 10% of shareholders' equity was as follows: December 31, 2020 (in thousands) Amortized Cost Fair Value Federal Home Loan Mortgage Corporation (Freddie Mac-FHLMC) 110,177 109,856 Federal Farm Credit Bank (FFCB) 54,263 54,279 Total $ 164,440 $ 164,135

Loans

Loans	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Loans	Loans The following table summarizes the components of First Guaranty's loan portfolio as of December 31, 2020 and December 31, 2019: December 31, 2020 December 31, 2019 (in thousands except for %) Balance As % of Category Balance As % of Category Real Estate: Construction & land development $ 150,841 8.2 % $ 172,247 11.3 % Farmland 26,880 1.4 % 22,741 1.5 % 1- 4 Family 271,236 14.7 % 289,635 18.9 % Multifamily 45,932 2.5 % 23,973 1.6 % Non-farm non-residential 824,137 44.6 % 616,536 40.3 % Total Real Estate 1,319,026 71.4 % 1,125,132 73.6 % Non-Real Estate: Agricultural 28,335 1.5 % 26,710 1.8 % Commercial and industrial 353,028 19.1 % 268,256 17.5 % Consumer and other 148,783 8.0 % 108,868 7.1 % Total Non-Real Estate 530,146 28.6 % 403,834 26.4 % Total Loans Before Unearned Income 1,849,172 100.0 % 1,528,966 100.0 % Unearned income (5,037) (3,476) Total Loans Net of Unearned Income $ 1,844,135 $ 1,525,490 The following table summarizes fixed and floating rate loans by contractual maturity, excluding nonaccrual loans, as of December 31, 2020 and December 31, 2019 unadjusted for scheduled principal payments, prepayments, or repricing opportunities. The average life of the loan portfolio may be substantially less than the contractual terms when these adjustments are considered. December 31, 2020 December 31, 2019 (in thousands) Fixed Floating Total Fixed Floating Total One year or less $ 186,252 $ 79,680 $ 265,932 $ 205,596 $ 104,859 $ 310,455 One to five years 740,358 368,259 1,108,617 509,455 286,131 795,586 Five to 15 years 128,860 91,032 219,892 147,502 65,713 213,215 Over 15 years 146,830 92,325 239,155 143,695 51,612 195,307 Subtotal $ 1,202,300 $ 631,296 1,833,596 $ 1,006,248 $ 508,315 1,514,563 Nonaccrual loans 15,576 14,403 Total Loans Before Unearned Income 1,849,172 1,528,966 Unearned income (5,037) (3,476) Total Loans Net of Unearned Income $ 1,844,135 $ 1,525,490 As of December 31, 2020, $305.0 million of floating rate loans were at their interest rate floor. At December 31, 2019, $153.3 million of floating rate loans were at their interest rate floor. Nonaccrual loans have been excluded from these totals. The following tables present the age analysis of past due loans at December 31, 2020 and December 31, 2019: As of December 31, 2020 (in thousands) 30-89 Days Past Due 90 Days or Total Past Due Current Total Loans Recorded Investment Real Estate: Construction & land development $ 8,088 $ 1,621 $ 9,709 $ 141,132 $ 150,841 $ 1,000 Farmland 227 857 1,084 25,796 26,880 — 1- 4 family 6,050 7,207 13,257 257,979 271,236 4,980 Multifamily 190 366 556 45,376 45,932 366 Non-farm non-residential 15,792 12,148 27,940 796,197 824,137 4,699 Total Real Estate 30,347 22,199 52,546 1,266,480 1,319,026 11,045 Non-Real Estate: Agricultural 143 3,539 3,682 24,653 28,335 67 Commercial and industrial 663 2,557 3,220 349,808 353,028 1,856 Consumer and other 1,176 372 1,548 147,235 148,783 123 Total Non-Real Estate 1,982 6,468 8,450 521,696 530,146 2,046 Total Loans Before Unearned Income $ 32,329 $ 28,667 $ 60,996 $ 1,788,176 1,849,172 $ 13,091 Unearned income (5,037) Total Loans Net of Unearned Income $ 1,844,135 As of December 31, 2019 (in thousands) 30-89 Days Past Due 90 Days or Total Past Due Current Total Loans Recorded Investment Real Estate: Construction & land development $ 760 $ 429 $ 1,189 $ 171,058 $ 172,247 $ 48 Farmland 6 1,274 1,280 21,461 22,741 — 1- 4 family 8,521 3,682 12,203 277,432 289,635 923 Multifamily — — — 23,973 23,973 — Non-farm non-residential 11,279 6,249 17,528 599,008 616,536 1,603 Total Real Estate 20,566 11,634 32,200 1,092,932 1,125,132 2,574 Non-Real Estate: Agricultural 310 4,800 5,110 21,600 26,710 — Commercial and industrial 2,801 342 3,143 265,113 268,256 15 Consumer and other 794 266 1,060 107,808 108,868 50 Total Non-Real Estate 3,905 5,408 9,313 394,521 403,834 65 Total Loans Before Unearned Income $ 24,471 $ 17,042 $ 41,513 $ 1,487,453 1,528,966 $ 2,639 Unearned income (3,476) Total Loans Net of Unearned Income $ 1,525,490 The tables above include $15.6 million and $14.4 million of nonaccrual loans for December 31, 2020 and 2019, respectively. See the tables below for more detail on nonaccrual loans. The following is a summary of nonaccrual loans by class at the dates indicated: As of December 31, (in thousands) 2020 2019 Real Estate: Construction & land development $ 621 $ 381 Farmland 857 1,274 1- 4 family 2,227 2,759 Multifamily — — Non-farm non-residential 7,449 4,646 Total Real Estate 11,154 9,060 Non-Real Estate: Agricultural 3,472 4,800 Commercial and industrial 701 327 Consumer and other 249 216 Total Non-Real Estate 4,422 5,343 Total Nonaccrual Loans $ 15,576 $ 14,403 The following table identifies the credit exposure of the loan portfolio, including loans acquired with deteriorated credit quality, by specific credit ratings as of the dates indicated: As of December 31, 2020 As of December 31, 2019 (in thousands) Pass Special Mention Substandard Doubtful Total Pass Special Mention Substandard Doubtful Total Real Estate: Construction & land development $ 139,032 $ 10,785 $ 1,024 $ — $ 150,841 $ 163,808 $ 6,180 $ 2,259 $ — $ 172,247 Farmland 22,822 46 4,012 — 26,880 18,223 3,177 1,341 — 22,741 1- 4 family 251,315 7,252 12,669 — 271,236 271,392 4,751 13,492 — 289,635 Multifamily 36,146 1,841 7,945 — 45,932 16,025 805 7,143 — 23,973 Non-farm non-residential 756,760 51,355 16,022 — 824,137 589,800 7,743 18,993 — 616,536 Total Real Estate 1,206,075 71,279 41,672 — 1,319,026 1,059,248 22,656 43,228 — 1,125,132 Non-Real Estate: Agricultural 24,180 92 4,063 — 28,335 21,529 48 5,133 — 26,710 Commercial and industrial 321,957 27,388 3,683 — 353,028 262,416 1,199 4,641 — 268,256 Consumer and other 147,697 442 644 — 148,783 108,618 180 70 — 108,868 Total Non-Real Estate 493,834 27,922 8,390 — 530,146 392,563 1,427 9,844 — 403,834 Total Loans Before Unearned Income $ 1,699,909 $ 99,201 $ 50,062 $ — 1,849,172 $ 1,451,811 $ 24,083 $ 53,072 $ — 1,528,966 Unearned income (5,037) (3,476) Total Loans Net of Unearned Income $ 1,844,135 $ 1,525,490 Purchased Impaired Loans As part of the acquisition of Union Bancshares, Inc. on November 7, 2019 and Premier Bancshares, Inc. on June 16, 2017, First Guaranty purchased credit impaired loans for which there was, at acquisition, evidence of deterioration of credit quality since their origination and it was probable, at acquisition, that all contractually required payments would not be collected. The carrying amount of those loans is as follows at December 31, 2020 and 2019. (in thousands) As of December 31, 2020 As of December 31, 2019 Real Estate: Construction & land development $ 397 $ 526 Farmland — — 1- 4 family 4,102 6,402 Multifamily 900 — Non-farm non-residential 2,396 2,294 Total Real Estate 7,795 9,222 Non-Real Estate: Agricultural 343 — Commercial and industrial 1,017 1,198 Consumer and other — — Total Non-Real Estate 1,360 1,198 Total $ 9,155 $ 10,420 For those purchased loans disclosed above, there was no allowance for loan losses at December 31, 2020 or December 31, 2019. Where First Guaranty can reasonably estimate the cash flows expected to be collected on the loans, a portion of the purchase discount is allocated to an accretable yield adjustment based upon the present value of the future estimated cash flows versus the current carrying value of the loan and the accretable yield portion is being recognized as interest income over the remaining life of the loan. Where First Guaranty cannot reasonably estimate the cash flows expected to be collected on the loans, it has decided to account for those loans using the cost recovery method of income recognition. As such, no portion of a purchase discount adjustment has been determined to meet the definition of an accretable yield adjustment on those loans accounted for using the cost recovery method. If, in the future, cash flows from the borrower(s) can be reasonably estimated, a portion of the purchase discount would be allocated to an accretable yield adjustment based upon the present value of the future estimated cash flows versus the current carrying value of the loan and the accretable yield portion would be recognized as interest income over the remaining life of the loan. Until such accretable yield can be calculated, under the cost recovery method of income recognition, all payments will be used to reduce the carrying value of the loan and no income will be recognized on the loan until the carrying value is reduced to zero. The accretable yield, or income expected to be collected, on the purchased loans above is as follows for the years ended December 31, 2020 and 2019. (in thousands) Year Ended December 31, 2020 Year Ended December 31, 2019 Balance, beginning of period $ 3,647 $ 613 Acquisition accretable yield 30 3,367 Accretion (785) (831) Net transfers from nonaccretable difference to accretable yield — 498 Balance, end of period $ 2,892 $ 3,647

Allowance for Loan Losses

Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2020
Allowance for Credit Loss [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses A summary of changes in the allowance for loan losses, by loan type, for the years ended December 31, 2020, 2019 and 2018 are as follows: As of December 31, 2020 2019 (in thousands) Beginning Allowance (12/31/19) Charge-offs Recoveries Provision Ending Allowance (12/31/20) Beginning Allowance (12/31/18) Charge-offs Recoveries Provision Ending Allowance (12/31/19) Real Estate: Construction & land development $ 423 $ (265) $ — $ 871 $ 1,029 $ 581 $ — $ — $ (158) $ 423 Farmland 50 — — 412 462 41 — — 9 50 1- 4 family 1,027 (154) 39 1,598 2,510 911 (552) 39 629 1,027 Multifamily 1,038 — — (60) 978 1,318 — — (280) 1,038 Non-farm non-residential 5,277 (550) 178 10,159 15,064 4,771 (2,603) 5 3,104 5,277 Total Real Estate 7,815 (969) 217 12,980 20,043 7,622 (3,155) 44 3,304 7,815 Non-Real Estate: Agricultural 95 (110) 70 126 181 339 (40) — (204) 95 Commercial and industrial 1,909 (265) 128 1,030 2,802 1,909 (879) 267 612 1,909 Consumer and other 1,110 (1,083) 724 739 1,490 891 (1,190) 246 1,163 1,110 Unallocated — — — 2 2 15 — — (15) — Total Non-Real Estate 3,114 (1,458) 922 1,897 4,475 3,154 (2,109) 513 1,556 3,114 Total $ 10,929 $ (2,427) $ 1,139 $ 14,877 $ 24,518 $ 10,776 $ (5,264) $ 557 $ 4,860 $ 10,929 As of December 31, 2018 (in thousands) Beginning Allowance (12/31/17) Charge-offs Recoveries Provision Ending Allowance (12/31/18) Real Estate: Construction & land development $ 628 $ — $ 3 $ (50) $ 581 Farmland 5 — — 36 41 1- 4 family 1,078 (99) 90 (158) 911 Multifamily 994 — 20 304 1,318 Non-farm non-residential 2,811 (404) 89 2,275 4,771 Total Real Estate 5,516 (503) 202 2,407 7,622 Non-Real Estate: Agricultural 187 (300) 26 426 339 Commercial and industrial 2,377 (179) 1,642 (1,931) 1,909 Consumer and other 1,125 (907) 216 457 891 Unallocated 20 — — (5) 15 Total Non-Real Estate 3,709 (1,386) 1,884 (1,053) 3,154 Total $ 9,225 $ (1,889) $ 2,086 $ 1,354 $ 10,776 Negative provisions are caused by changes in the composition and credit quality of the loan portfolio. The result is an allocation of the loan loss reserve from one category to another. A summary of the allowance and loans, including loans acquired with deteriorated credit quality, individually and collectively evaluated for impairment are as follows: As of December 31, 2020 (in thousands) Allowance Allowance Individually Evaluated for Purchased Credit-Impairment Allowance Total Allowance Loans Loans Individually Evaluated for Purchased Credit-Impairment Loans Total Loans Real Estate: Construction & land development $ — $ — $ 1,029 $ 1,029 $ — $ 397 $ 150,444 $ 150,841 Farmland — — 462 462 543 — 26,337 26,880 1- 4 family 266 — 2,244 2,510 1,480 4,102 265,654 271,236 Multifamily — — 978 978 — 900 45,032 45,932 Non-farm non-residential 2,280 — 12,784 15,064 9,800 2,396 811,941 824,137 Total Real Estate 2,546 — 17,497 20,043 11,823 7,795 1,299,408 1,319,026 Non-Real Estate: Agricultural — — 181 181 2,531 343 25,461 28,335 Commercial and industrial 97 — 2,705 2,802 1,544 1,017 350,467 353,028 Consumer and other — — 1,490 1,490 — — 148,783 148,783 Unallocated — — 2 2 — — — — Total Non-Real Estate 97 — 4,378 4,475 4,075 1,360 524,711 530,146 Total $ 2,643 $ — $ 21,875 $ 24,518 $ 15,898 $ 9,155 $ 1,824,119 $ 1,849,172 Unearned Income (5,037) Total Loans Net of Unearned Income $ 1,844,135 As of December 31, 2019 (in thousands) Allowance Allowance Individually Evaluated for Purchased Credit-Impairment Allowance Total Allowance Loans Loans Individually Evaluated for Purchased Credit-Impairment Loans Total Loans Real Estate: Construction & land development $ — $ — $ 423 $ 423 $ — $ 526 $ 171,721 $ 172,247 Farmland — — 50 50 543 — 22,198 22,741 1- 4 family 34 — 993 1,027 1,058 6,402 282,175 289,635 Multifamily — — 1,038 1,038 — — 23,973 23,973 Non-farm non-residential 1,879 — 3,398 5,277 12,120 2,294 602,122 616,536 Total Real Estate 1,913 — 5,902 7,815 13,721 9,222 1,102,189 1,125,132 Non-Real Estate: Agricultural — — 95 95 4,030 — 22,680 26,710 Commercial and industrial 111 — 1,798 1,909 2,981 1,198 264,077 268,256 Consumer and other — — 1,110 1,110 — — 108,868 108,868 Unallocated — — — — — — — — Total Non-Real Estate 111 — 3,003 3,114 7,011 1,198 395,625 403,834 Total $ 2,024 $ — $ 8,905 $ 10,929 $ 20,732 $ 10,420 $ 1,497,814 $ 1,528,966 Unearned Income (3,476) Total Loans Net of Unearned Income $ 1,525,490 As of December 31, 2020, 2019 and 2018, First Guaranty had loans totaling $15.6 million, $14.4 million and $8.7 million, respectively, not accruing interest. As of December 31, 2020, 2019 and 2018, First Guaranty had loans past due 90 days or more and still accruing interest totaling $13.1 million, $2.6 million and $0.1 million, respectively. The average outstanding balance of nonaccrual loans in 2020 was $19.8 million compared to $12.0 million in 2019 and $8.9 million in 2018. As of December 31, 2020, First Guaranty has no outstanding commitments to advance additional funds in connection with impaired loans. The following is a summary of impaired loans, excluding loans acquired with deteriorated credit quality, by class at December 31, 2020: As of December 31, 2020 (in thousands) Recorded Unpaid Related Average Interest Income Interest Income Impaired Loans with no related allowance: Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — Farmland 543 552 — 543 — — 1- 4 family 511 534 — 527 — — Multifamily — — — — — — Non-farm non-residential 1,227 1,227 — 1,218 80 72 Total Real Estate 2,281 2,313 — 2,288 80 72 Non-Real Estate: Agricultural 2,531 2,661 — 2,594 — — Commercial and industrial 601 601 — 821 48 47 Consumer and other — — — — — — Total Non-Real Estate 3,132 3,262 — 3,415 48 47 Total Impaired Loans with no related allowance 5,413 5,575 — 5,703 128 119 Impaired Loans with an allowance recorded: Real estate: Construction & land development — — — — — — Farmland — — — — — — 1- 4 family 969 969 266 969 5 5 Multifamily — — — — — — Non-farm non-residential 8,573 8,619 2,280 7,550 60 80 Total Real Estate 9,542 9,588 2,546 8,519 65 85 Non-Real Estate: Agricultural — — — — — — Commercial and industrial 943 943 97 981 79 57 Consumer and other — — — — — — Total Non-Real Estate 943 943 97 981 79 57 Total Impaired Loans with an allowance recorded 10,485 10,531 2,643 9,500 144 142 Total Impaired Loans $ 15,898 $ 16,106 $ 2,643 $ 15,203 $ 272 $ 261 The following is a summary of impaired loans, excluding loans acquired with deteriorated credit quality, by class at December 31, 2019: As of December 31, 2019 (in thousands) Recorded Unpaid Related Average Interest Income Interest Income Impaired Loans with no related allowance: Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — Farmland 543 552 — 550 — — 1- 4 family 541 541 — 544 27 22 Multifamily — — — — — — Non-farm non-residential 8,307 8,307 — 9,940 673 688 Total Real Estate 9,391 9,400 — 11,034 700 710 Non-Real Estate: Agricultural 4,030 4,186 — 4,031 12 — Commercial and industrial 1,962 1,962 — 1,788 81 67 Consumer and other — Total Non-Real Estate 5,992 6,148 — 5,819 93 67 Total Impaired Loans with no related allowance 15,383 15,548 — 16,853 793 777 Impaired Loans with an allowance recorded: Real estate: Construction & land development — — — — — — Farmland — — — — — — 1- 4 family 517 517 34 522 — — Multifamily — — — — — — Non-farm non-residential 3,813 4,162 1,879 4,134 194 212 Total Real Estate 4,330 4,679 1,913 4,656 194 212 Non-Real Estate: Agricultural — — — — — — Commercial and industrial 1,019 1,019 111 1,039 81 77 Consumer and other — — — — — — Total Non-Real Estate 1,019 1,019 111 1,039 81 77 Total Impaired Loans with an allowance recorded 5,349 5,698 2,024 5,695 275 289 Total Impaired Loans $ 20,732 $ 21,246 $ 2,024 $ 22,548 $ 1,068 $ 1,066 Troubled Debt Restructurings A Troubled Debt Restructuring ("TDR") is considered such if the lender for economic or legal reasons related to the debtor's financial difficulties grants a concession to the debtor that it would not otherwise consider. The modifications to First Guaranty's TDRs were concessions on either the interest rate charged or the amortization. The effect of the modifications to First Guaranty was a reduction in interest income. These loans have an allocated reserve in First Guaranty's allowance for loan losses. First Guaranty restructured one loan that is considered TDR in the years ended December 31, 2020 and 2019. At December 31, 2020, First Guaranty had one outstanding TDR. Under section 4013 of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), which was signed into law on March 27, 2020, financial institutions have the option to temporarily suspend certain requirements under U.S. generally accepted accounting principles related to troubled debt restructurings for a limited period of time to account for the effects of COVID-19. This provision allows a financial institution the option to not apply the guidance on accounting for troubled debt restructurings to loan modifications, such as extensions or deferrals, related to COVID-19 made between March 1, 2020 and the earlier of (i) December 31, 2020 or (ii) 60 days after the end of the COVID-19 national emergency. The relief can only be applied to modifications for borrowers that were not more than 30 days past due as of December 31, 2019. First Guaranty elected to adopt these provisions of the CARES Act. The following table is an age analysis of TDRs as of December 31, 2020 and December 31, 2019: December 31, 2020 December 31, 2019 Accruing Loans Accruing Loans (in thousands) Current 30-89 Days Past Due Nonaccrual Total TDRs Current 30-89 Days Past Due Nonaccrual Total TDRs Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — $ — $ — Farmland — — — — — — — — 1- 4 family — — — — — — — — Multifamily — — — — — — — — Non-farm non-residential — — 3,591 3,591 — — — — Total Real Estate — — 3,591 3,591 — — — — Non-Real Estate: Agricultural — — — — — — — — Commercial and industrial — — — — — — — — Consumer and other — — — — — — — — Total Non-Real Estate — — — — — — — — Total $ — $ — $ 3,591 $ 3,591 $ — $ — $ — $ — The following table discloses TDR activity for the twelve months ended December 31, 2020. Trouble Debt Restructured Loans Activity (in thousands) Beginning balance (December 31, 2019) New TDRs Charge-offs Transferred Paydowns Construction to Restructured Other adjustments Ending balance (December 31, 2020) Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — $ — $ — $ — Farmland — — — — — — — — — 1- 4 family — — — — — — — — — Multifamily — — — — — — — — — Non-farm non-residential — 3,613 — — (22) — — — 3,591 Total Real Estate — 3,613 — — (22) — — — 3,591 Non-Real Estate: Agricultural — — — — — — — — — Commercial and industrial — — — — — — — — — Consumer and other — — — — — — — — — Total Non-Real Estate — — — — — — — — — Total Impaired Loans with no related allowance $ — $ 3,613 $ — $ — $ (22) $ — $ — $ — $ 3,591 There were no commitments to lend additional funds to debtors whose terms have been modified in a troubled debt restructuring at December 31, 2020.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment The components of premises and equipment at December 31, 2020 and 2019 are as follows: (in thousands) December 31, 2020 December 31, 2019 Land $ 15,180 $ 15,180 Bank premises 40,906 40,536 Furniture and equipment 28,511 27,255 Construction in progress 13,562 9,534 Acquired value 98,159 92,505 Less: accumulated depreciation 38,267 36,041 Net book value $ 59,892 $ 56,464 Depreciation expense amounted to $2.8 million, $2.3 million and $2.1 million for 2020, 2019 and 2018, respectively. Interest cost capitalized as a construction cost was $55,000, $91,000 and $54,000 for 2020, 2019 and 2018.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill and intangible assets deemed to have indefinite lives are no longer amortized, but are subject to impairment testing. Other intangible assets continue to be amortized over their useful lives. Goodwill represents the purchase price over the fair value of net assets acquired from the Homestead Bancorp in 2007, Premier Bancshares, Inc. in 2017 and Union Bancshares, Incorporated in 2019. No impairment charges have been recognized since acquisition. Goodwill totaled $12.9 million at December 31, 2020 and 2019, respectively. The following table summarizes intangible assets subject to amortization. December 31, 2020 December 31, 2019 (in thousands) Gross Accumulated Net Gross Accumulated Net Core deposit intangibles $ 16,266 $ 10,451 $ 5,815 $ 16,266 $ 9,739 $ 6,527 Loan servicing assets 1,826 1,054 772 1,558 919 639 Total $ 18,092 $ 11,505 $ 6,587 $ 17,824 $ 10,658 $ 7,166 The core deposits intangible reflect the value of deposit relationships, including the beneficial rates, which arose from acquisitions. The weighted-average amortization period remaining for the core deposit intangibles is 10.0 years. Amortization expense relating to purchase accounting intangibles totaled $0.7 million, $0.4 million, and $0.5 million for the years ended December 31, 2020, 2019, and 2018, respectively. Amortization expense of the core deposit intangible assets for the next five years is as follows: For the Years Ended Estimated Amortization Expense (in thousands) December 31, 2021 $ 644 December 31, 2022 $ 576 December 31, 2023 $ 576 December 31, 2024 $ 576 December 31, 2025 $ 576

Other Real Estate

Other Real Estate	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Other Real Estate	Other Real Estate Other real estate owned consists of the following at the dates indicated: (in thousands) December 31, 2020 December 31, 2019 Real Estate Owned Acquired by Foreclosure: Residential $ 131 $ 559 Construction & land development 311 669 Non-farm non-residential 2,203 3,651 Total Other Real Estate Owned and Foreclosed Property 2,645 4,879 Allowance for Other Real Estate Owned losses (405) — Net Other Real Estate Owned and Foreclosed Property $ 2,240 $ 4,879

Deposits

Deposits	12 Months Ended
	Dec. 31, 2020
Deposits [Abstract]
Deposits	Deposits A schedule of maturities of all time deposits are as follows: (in thousands) December 31, 2020 2021 $ 355,093 2022 125,678 2023 108,380 2024 113,745 2025 and thereafter 22,733 Total $ 725,629 The table above includes $3.4 million in brokered deposits for December 31, 2020. The aggregate amount of jumbo time deposits, each with a minimum denomination of $250,000 totaled $248.8 million and $290.3 million at December 31, 2020 and 2019, respectively.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Borrowings	Borrowings Short-term borrowings are summarized as follows: (in thousands) December 31, 2020 December 31, 2019 Federal Home Loan Bank advances $ 50,000 $ 13,079 Repurchase agreements 6,121 6,840 Line of credit — — Total short-term borrowings $ 56,121 $ 19,919 First Guaranty maintains borrowing relationships with other financial institutions as well as the Federal Home Loan Bank on a short and long-term basis to meet liquidity needs. First Guaranty had $56.1 million in short-term borrowings outstanding at December 31, 2020 compared to $19.9 million outstanding at December 31, 2019. First Guaranty has an available line of credit of $6.5 million, with no outstanding balance at December 31, 2020. Available lines of credit totaled $297.2 million at December 31, 2020 and $278.8 million at December 31, 2019. The following schedule provides certain information about First Guaranty's short-term borrowings for the periods indicated: December 31, (in thousands except for %) 2020 2019 2018 Outstanding at year end $ 56,121 $ 19,919 $ — Maximum month-end outstanding $ 57,048 $ 19,919 $ 37,000 Average daily outstanding $ 48,277 $ 3,320 $ 7,119 Weighted average rate during the year 0.95 % 2.00 % 2.21 % Weighted average rate at year end 0.89 % 2.00 % — % Long-term debt is summarized as follows: Long-term Federal Home Loan Bank advance, fixed at 2.12%, totaled $3.4 million at December 31, 2020 and $3.5 million at December 31, 2019. This advance was acquired in the Union acquisition and has a contractual maturity date of September 1, 2037. Senior long-term debt with a commercial bank, priced at floating Wall Street Journal Prime less 25 basis points (3.00%), totaled $14.0 million at December 31, 2020. First Guaranty pays $697,715 principal plus interest quarterly. This loan was renewed in December 2020 and has a contractual maturity date of December 22, 2025. This long-term debt is secured by a pledge of 85% (4,823,899 shares) of First Guaranty's interest in First Guaranty Bank (a wholly owned subsidiary). This senior long-term debt was priced at floating 3-month LIBOR plus 250 basis points (4.61%), totaled $16.9 million at December 31, 2019. This loan was originated in December 2015. Senior long-term debt with a commercial bank, priced at floating Wall Street Journal Prime less 70 basis points (3.00%), totaled $28.4 million at December 31, 2020 and $31.7 million at December 31, 2019. First Guaranty pays $812,500 principal plus interest quarterly. This loan was renewed in November 2019 and has a contractual maturity date of November 7, 2024. This long-term debt is secured by a pledge of 85% (4,823,899 shares) of First Guaranty's interest in First Guaranty Bank (a wholly owned subsidiary). Junior subordinated debt, priced at Wall Street Journal Prime plus 75 basis points (4.00%), totaled $14.8 million at December 31, 2020 and $14.7 million at December 31, 2019. First Guaranty pays interest semi-annually for the Fixed Interest Rate Period and quarterly for the Floating Interest Rate Period. The Note is unsecured and ranks junior in right of payment to any senior indebtedness and obligations to general and secured creditors. The Note was originated in December 2015 and is scheduled to mature on December 21, 2025. Subject to limited exceptions, First Guaranty cannot repay the Note until after December 21, 2020. The Note qualifies for treatment as Tier 2 capital for regulatory capital purposes. First Guaranty maintains a revolving line of credit for $6.5 million with an availability of $6.5 million at December 31, 2020. This line of credit is secured by a pledge of 13.2% (735,745 shares) of First Guaranty's interest in First Guaranty Bank (a wholly owned subsidiary) and is priced at 4.25%. At December 31, 2020, letters of credit issued by the FHLB totaling $365.8 million were outstanding and carried as off-balance sheet items, all of which expire by 2024. At December 31, 2019, letters of credit issued by the FHLB totaling $355.2 million were outstanding and carried as off-balance sheet items, all of which expire by 2024. The letters of credit are solely used for pledging towards public fund deposits. The FHLB has a blanket lien on substantially all of the loans in First Guaranty's portfolio which is used to secure borrowing availability from the FHLB. First Guaranty has obtained a subordination agreement from the FHLB on First Guaranty's farmland, agricultural, and commercial and industrial loans. These loans are available to be pledged for additional reserve liquidity. As of December 31, 2020 obligations on long-term advances from FHLB, senior long-term debt and junior subordinated debentures totaled $60.5 million. The scheduled payments are as follows: (in thousands) Long-term Advances from FHLB Senior Junior 2021 $ — $ 4,531 $ — 2022 — 6,041 — 2023 — 6,041 — 2024 — 22,291 — 2025 — 3,504 15,000 2026 and thereafter 3,366 — — Subtotal $ 3,366 $ 3,366 $ 42,408 $ 15,000 Debt issuance costs — (42) (223) Total $ 3,366 $ 42,366 $ 14,777

Capital Requirements

Capital Requirements	12 Months Ended
	Dec. 31, 2020
Regulatory Capital Requirements Under Banking Regulations [Abstract]
Capital Requirements	Capital Requirements First Guaranty Bank is subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions that, if undertaken, could have a direct material effect on First Guaranty's financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios of total and Tier 1 capital to risk-weighted assets and of Tier 1 capital to average assets. Management believes, as of December 31, 2020 and 2019, that the Bank met all capital adequacy requirements. In addition to establishing the minimum regulatory capital requirements, the regulations limit capital distributions and certain discretionary bonus payments to management if the institution does not hold a "capital conservation buffer" consisting of 2.5% of common equity Tier 1 capital to risk-weighted asset above the amount necessary to meet its minimum risk-based capital requirements. First Guaranty Bank's capital conservation buffer was 4.22% at December 31, 2020. In addition, as a result of the legislation, the federal banking agencies have developed a "Community Bank Leverage Ratio" (the ratio of a bank's Tier 1 capital to average total consolidated assets) for financial institutions with assets of less than $10 billion. A "qualifying community bank" that exceeds this ratio will be deemed to be in compliance with all other capital and leverage requirements, including the capital requirements to be considered "well capitalized" under Prompt Corrective Action statutes. The federal banking agencies may consider a financial institution's risk profile when evaluating whether it qualifies as a community bank for purposes of the capital ratio requirement. The federal banking agencies set the new Community Bank Leverage Ratio at 9%. Pursuant to the CARES Act, the federal banking agencies set the Community Bank Leverage Ratio at 8% beginning in the second quarter of 2020 through the end of 2020. Beginning in 2021, the Community Bank Leverage Ratio will increase to 8.5% for the calendar year. Community banks will have until Jan. 1, 2022, before the Community Bank Leverage Ratio requirement will return to 9%. A financial institution can elect to be subject to this new definition. The new rule took effect on January 1, 2020. The Bank did not elect to follow the Community Bank Leverage Ratio. As of December 31, 2020, the most recent notification from the Federal Deposit Insurance Corporation categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since the notification that Management believes have changed the Bank's category. First Guaranty Bank's actual capital amounts and ratios as of December 31, 2020 and 2019 are presented in the following table. Actual Minimum Capital Requirements Minimum to be Well Capitalized (in thousands except for %) Amount Ratio Amount Ratio Amount Ratio December 31, 2020 Total Risk-based Capital: $ 233,391 12.22 % $ 152,805 8.00 % $ 191,006 10.00 % Tier 1 Capital: $ 209,507 10.97 % $ 114,604 6.00 % $ 152,805 8.00 % Tier 1 Leverage Capital: $ 209,507 8.58 % $ 97,683 4.00 % $ 122,104 5.00 % Common Equity Tier One Capital: $ 209,507 10.97 % $ 85,953 4.50 % $ 124,154 6.50 % December 31, 2019 Total Risk-based Capital: $ 213,962 12.61 % $ 135,697 8.00 % $ 169,621 10.00 % Tier 1 Capital: $ 203,034 11.96 % $ 101,773 6.00 % $ 135,697 8.00 % Tier 1 Leverage Capital: $ 203,034 10.44 % $ 77,771 4.00 % $ 97,214 5.00 % Common Equity Tier One Capital: $ 203,034 11.96 % $ 76,329 4.50 % $ 110,254 6.50 %

Dividend Restrictions

Dividend Restrictions	12 Months Ended
	Dec. 31, 2020
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Dividend Restrictions	Dividend Restrictions The Federal Reserve Bank ("FRB") has stated that, generally, a bank holding company should not maintain a rate of distributions to shareholders unless its available net income has been sufficient to fully fund the distributions, and the prospective rate of earnings retention appears consistent with the bank holding company's capital needs, asset quality and overall financial condition. As a Louisiana corporation, First Guaranty is restricted under the Louisiana corporate law from paying dividends under certain conditions. First Guaranty Bank may not pay dividends or distribute capital assets if it is in default on any assessment due to the FDIC. First Guaranty Bank is also subject to regulations that impose minimum regulatory capital and minimum state law earnings requirements that affect the amount of cash available for distribution. In addition, under the Louisiana Banking Law, dividends may not be paid if it would reduce the unimpaired surplus below 50% of outstanding capital stock in any year. The Bank is restricted under applicable laws in the payment of dividends to an amount equal to current year earnings plus undistributed earnings for the immediately preceding year, unless prior permission is received from the Commissioner of Financial Institutions for the State of Louisiana. Dividends payable by the Bank in 2021 without permission will be limited to 2021 earnings plus the undistributed earnings of $5.7 million from 2020. Accordingly, at January 1, 2021, $223.1 million of First Guaranty's equity in the net assets of the Bank was restricted. In addition, dividends paid by the Bank to First Guaranty would be prohibited if the effect thereof would cause the Bank's capital to be reduced below applicable minimum capital requirements.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In the normal course of business, First Guaranty and its subsidiary, First Guaranty Bank, have loans, deposits and other transactions with its executive officers, directors, affiliates and certain business organizations and individuals with which such persons are associated. These transactions are completed with terms no less favorable than current market rates. An analysis of the activity of loans made to such borrowers during the year ended December 31, 2020 and 2019 follows: December 31, (in thousands) 2020 2019 Balance, beginning of year $ 61,820 $ 63,907 Net (Decrease) Increase 17,579 (2,087) Balance, end of year $ 79,399 $ 61,820 Unfunded commitments to First Guaranty and Bank directors and executive officers totaled $40.8 million and $21.6 million at December 31, 2020 and 2019, respectively. At December 31, 2020 First Guaranty and the Bank had deposits from directors and executives totaling $50.3 million. There were no participations in loans purchased from affiliated financial institutions included in First Guaranty's loan portfolio in 2020 or 2019. During the years ended 2020, 2019 and 2018, First Guaranty paid approximately $0.5 million, $0.5 million and $0.3 million, respectively, for printing services and supplies and office furniture and equipment to Champion Industries, Inc., of which Mr. Marshall T. Reynolds, the Chairman of First Guaranty's Board of Directors, is President, Chief Executive Officer, Chairman of the Board of Directors and a major shareholder of Champion. On December 21, 2015, First Guaranty issued a $15.0 million subordinated note (the "Note") to Edgar Ray Smith III, a director of First Guaranty. The Note is for a ten-year term (non-callable for first five years) and will bear interest at a fixed annual rate of 4.0% for the first five years of the term and then adjust to a floating rate based on the Prime Rate as reported by the Wall Street Journal plus 75 basis points for the period of time after the fifth year until redemption or maturity. First Guaranty paid interest of $0.6 million in 2020, 2019 and 2018 for this note. During the years ended 2020, 2019 and 2018, First Guaranty paid approximately $27,000, $0.1 million and $0.2 million, respectively, for the purchase and maintenance of First Guaranty's automobiles to subsidiaries of Hood Automotive Group, of which William K. Hood, a director of First Guaranty, is President. During the years ended 2020, 2019 and 2018, First Guaranty paid approximately $0.1 million, $69,000 and $0.7 million, respectively, for architectural services in relation to bank branches to Gasaway Gasaway Bankston Architects, of which bank subsidiary board member Andrew B. Gasaway is part owner.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Employee Benefit Plans	Employee Benefit PlansFirst Guaranty has an employee savings plan to which employees, who meet certain service requirements, may defer 1% to 20% of their base salaries, 6% of which may be matched up to 100%, at its sole discretion. Contributions to the savings plan were $173,000, $149,000 and $292,000 in 2020, 2019 and 2018, respectively. First Guaranty has an Employee Stock Ownership Plan ("ESOP") which was frozen in 2010. No contributions were made to the ESOP for the years 2020, 2019 or 2018. As of December 31, 2020, the ESOP held 2,770 shares. First Guaranty is in the process of terminating the plan.

Other Expenses

Other Expenses	12 Months Ended
	Dec. 31, 2020
Other Expenses [Abstract]
Other Expenses	Other Expenses The following is a summary of the significant components of other noninterest expense: December 31, (in thousands) 2020 2019 2018 Other noninterest expense: Legal and professional fees $ 2,919 $ 2,648 $ 2,362 Data processing 2,465 1,972 1,692 ATM Fees 1,332 1,217 1,214 Marketing and public relations 1,046 1,456 1,329 Taxes - sales, capital and franchise 1,251 1,094 1,066 Operating supplies 921 674 562 Software expense and amortization 2,354 1,308 1,119 Travel and lodging 726 908 978 Telephone 256 193 208 Amortization of core deposits 712 390 545 Donations 393 603 380 Net costs from other real estate and repossessions 1,653 422 186 Regulatory assessment 1,716 683 941 Other 2,980 2,536 2,204 Total other noninterest expense $ 20,724 $ 16,104 $ 14,786 First Guaranty does not capitalize advertising costs. They are expensed as incurred and are included in other noninterest expense on the Consolidated Statements of Income. Advertising expense was $0.4 million, $0.8 million and $0.9 million for 2020, 2019 and 2018, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Tax Cuts and Jobs Act ("TCJA") signed into law on December 22, 2017, makes broad and complex changes to the U.S. tax code that affected income tax expense in 2017. The TCJA reduced the U.S. federal corporate income tax rate from 35% to 21% beginning January 1, 2018 and also established new tax laws that affect 2018. The following is a summary of the provision for income taxes included in the Consolidated Statements of Income: December 31, (in thousands) 2020 2019 2018 Current $ 8,964 $ 3,770 $ 3,929 Deferred (3,745) (114) (467) Total $ 5,219 $ 3,656 $ 3,462 The difference between income taxes computed by applying the statutory federal income tax rate and the provision for income taxes in the financial statements is reconciled as follows: December 31, (in thousands except for %) 2020 2019 2018 Statutory tax rate 21.0 % 21.0 % 21.0 % Federal income taxes at statutory rate $ 5,363 $ 3,758 $ 3,712 Tax exempt municipal income (124) (140) (166) Other (20) 38 (84) Total $ 5,219 $ 3,656 $ 3,462 Deferred taxes are recorded based upon differences between the financial statement and tax basis of assets and liabilities, and available tax credit carry forwards. Temporary differences between the financial statement and tax values of assets and liabilities give rise to deferred taxes. The significant components of deferred taxes classified in First Guaranty's Consolidated Balance Sheets at December 31, 2020 and 2019 are as follows: December 31, (in thousands) 2020 2019 Deferred tax assets: Allowance for loan losses $ 4,748 $ 1,720 Other real estate owned 239 257 Unrealized losses on available for sale securities — — Net operating loss 1,190 1,282 Other 581 508 Gross deferred tax assets 6,758 3,767 Deferred tax liabilities: Depreciation and amortization (1,952) (2,010) Core deposit intangibles (1,214) (1,359) Unrealized gains on available for sale securities (172) (578) Discount on purchased loans (161) (267) Other (625) (670) Gross deferred tax liabilities (4,124) (4,884) Net deferred tax assets (liabilities) $ 2,634 $ (1,117) First Guaranty determined that the net deferred tax asset at December 31, 2020 was more likely than not to be realized based on an assessment of all available positive and negative evidence, and therefore no valuation allowance was recorded. Net operating loss carryforwards for income tax purposes were $5.7 million as of December 31, 2020 and $6.1 million in 2019. The carryforwards were acquired in 2017 in the Premier acquisition and expire from 2027 to 2034, and will be utilized subject to annual Internal Revenue Code Section 382 limitations. ASC 740-10, Income Taxes, clarifies the accounting for uncertainty in income taxes and prescribes a recognition threshold and measurement attribute for the consolidated financial statements recognition and measurement of a tax position taken or expected to be taken in a tax return. First Guaranty does not believe it has any unrecognized tax benefits included in its consolidated financial statements. First Guaranty has not had any settlements in the current period with taxing authorities, nor has it recognized tax benefits as a result of a lapse of the applicable statute of limitations. First Guaranty recognizes interest and penalties accrued related to unrecognized tax benefits, if applicable, in noninterest expense. During the years ended December 31, 2020, 2019 and 2018, First Guaranty did not recognize any interest or penalties in its consolidated financial statements, nor has it recorded an accrued liability for interest or penalty payments.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Off-balance sheet commitments First Guaranty is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include commitments to extend credit and standby and commercial letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Balance Sheets. The contract or notional amounts of those instruments reflect the extent of the involvement in particular classes of financial instruments. The exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby and commercial letters of credit is represented by the contractual notional amount of those instruments. Unless otherwise noted, collateral or other security is not required to support financial instruments with credit risk. Set forth below is a summary of the notional amounts of the financial instruments with off-balance sheet risk at December 31, 2020 and December 31, 2019. Contract Amount December 31, 2020 December 31, 2019 (in thousands) Commitments to Extend Credit $ 154,047 $ 117,826 Unfunded Commitments under lines of credit $ 169,151 $ 148,127 Commercial and Standby letters of credit $ 11,728 $ 11,258 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Each customer's creditworthiness is evaluated on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of credit, is based on Management's credit evaluation of the counterpart. Collateral requirements vary but may include accounts receivable, inventory, property, plant and equipment, residential real estate and commercial properties. Standby and commercial letters of credit are conditional commitments to guarantee the performance of a customer to a third party. These guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing and similar transactions. The majority of these guarantees are short-term, one year or less; however, some guarantees extend for up to three years. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities. Collateral requirements are the same as on-balance sheet instruments and commitments to extend credit. There were no losses incurred on off-balance sheet commitments in 2020, 2019 or 2018. First Guaranty currently has one new facility under construction with total construction commitment of $11.4 million of which $11.1 million has been incurred as of December 31, 2020.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	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. The fair value hierarchy is as follows: Level 1 Inputs – Unadjusted quoted market prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds or credit risks) or inputs that are derived principally from or corroborated by market data by correlation or other means. Level 3 Inputs – Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity's own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. A description of the valuation methodologies used for instruments measured at fair value follows, as well as the classification of such instruments within the valuation hierarchy. Securities available for sale. Securities are classified within Level 1 where quoted market prices are available in an active market. Inputs include securities that have quoted prices in active markets for identical assets. If quoted market prices are unavailable, fair value is estimated using quoted prices of securities with similar characteristics, at which point the securities would be classified within Level 2 of the hierarchy. Securities classified Level 3 as of December 31, 2020 includes corporate debt and municipal securities. Impaired loans . Loans are measured for impairment using the methods permitted by ASC Topic 310. Fair value of impaired loans is measured by either the fair value of the collateral if the loan is collateral dependent (Level 2 or Level 3), or the present value of expected future cash flows, discounted at the loan's effective interest rate (Level 3). Fair value of the collateral is determined by appraisals or by independent valuation. Other real estate owned. Properties are recorded at the balance of the loan or at estimated fair value less estimated selling costs, whichever is less, at the date acquired. Fair values of other real estate owned ("OREO") at December 31, 2020 and 2019 are determined by sales agreement or appraisal, and costs to sell are based on estimation per the terms and conditions of the sales agreement or amounts commonly used in real estate transactions. Inputs include appraisal values or recent sales activity for similar assets in the property's market; thus OREO measured at fair value would be classified within either Level 2 or Level 3 of the hierarchy. Certain non-financial assets and non-financial liabilities are measured at fair value on a non-recurring basis including assets and liabilities related to reporting units measured at fair value in the testing of goodwill impairment, as well as intangible assets and other non-financial long-lived assets measured at fair value for impairment assessment. The following table summarizes financial assets measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: (in thousands) December 31, 2020 December 31, 2019 Available for Sale Securities Fair Value Measurements Using: Level 1: Quoted Prices in Active Markets For Identical Assets $ 3,000 $ — Level 2: Significant Other Observable Inputs 209,359 330,539 Level 3: Significant Unobservable Inputs 26,189 9,398 Securities available for sale measured at fair value $ 238,548 $ 339,937 First Guaranty's valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While Management believes the methodologies used are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value. The change in Level 1 securities available for sale from December 31, 2019 was due principally to a net increase in Treasury bills of $3.0 million. The change in Level 2 securities available for sale from December 31, 2019 was due principally to the transfer of mortgage-backed and municipal securities from the held for sale to available for sale portfolio and the transfer of securities between Level 2 and 3. $6.8 million in corporate securities and $1.4 million in municipal securities were transferred from Level 3 to Level 2 from December 31, 2019 to December 31, 2020. There were no transfers between Level 1 and 2 securities available for sale from December 31, 2019 to December 31, 2020. The following table reconciles assets measured at fair value on a recurring basis using unobservable inputs ( Level 3 ): Level 3 Changes (in thousands) December 31, 2020 December 31, 2019 Balance, beginning of year $ 9,398 $ 4,761 Total gains or losses (realized/unrealized): Included in earnings — — Included in other comprehensive income 256 146 Purchases, sales, issuances and settlements, net 5,361 4,491 Transfers in and/or out of Level 3 11,174 — Balance as of end of year $ 26,189 $ 9,398 There were no gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held as of December 31, 2020. The following table measures financial assets and financial liabilities measured at fair value on a non-recurring basis as of December 31, 2020 and December 31, 2019, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value: (in thousands) At December 31, 2020 At December 31, 2019 Fair Value Measurements Using: Impaired Loans Level 1: Quoted Prices in Active Markets For Identical Assets $ — $ — Level 2: Significant Other Observable Inputs — — Level 3: Significant Unobservable Inputs 7,842 4,046 Impaired loans measured at fair value $ 7,842 $ 4,046 Fair Value Measurements Using: Other Real Estate Owned Level 1: Quoted Prices in Active Markets For Identical Assets $ — $ — Level 2: Significant Other Observable Inputs 363 4,158 Level 3: Significant Unobservable Inputs 1,877 721 Other real estate owned measured at fair value $ 2,240 $ 4,879 ASC 825-10 provides First Guaranty with an option to report selected financial assets and liabilities at fair value. The fair value option established by this statement permits First Guaranty to choose to measure eligible items at fair value at specified election dates and report unrealized gains and losses on items for which the fair value option has been elected in earnings at each reporting date subsequent to implementation. First Guaranty has chosen not to elect the fair value option for any items that are not already required to be measured at fair value in accordance with accounting principles generally accepted in the United States.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2020
Financial Instruments, Owned, at Fair Value [Abstract]
Financial Instruments	Financial Instruments Fair value estimates are generally subjective in nature and are dependent upon a number of significant assumptions associated with each instrument or group of similar instruments, including estimates of discount rates, risks associated with specific financial instruments, estimates of future cash flows and relevant available market information. Fair value information is intended to represent an estimate of an amount at which a financial instrument could be exchanged in a current transaction between a willing buyer and seller engaging in an exchange transaction. However, since there are no established trading markets for a significant portion of First Guaranty's financial instruments, First Guaranty may not be able to immediately settle financial instruments; as such, the fair values are not necessarily indicative of the amounts that could be realized through immediate settlement. In addition, the majority of the financial instruments, such as loans and deposits, are held to maturity and are realized or paid according to the contractual agreement with the customer. Quoted market prices are used to estimate fair values when available. However, due to the nature of the financial instruments, in many instances quoted market prices are not available. Accordingly, estimated fair values have been estimated based on other valuation techniques, such as discounting estimated future cash flows using a rate commensurate with the risks involved or other acceptable methods. Fair values are estimated without regard to any premium or discount that may result from concentrations of ownership of financial instruments, possible income tax ramifications or estimated transaction costs. The fair value estimates are subjective in nature and involve matters of significant judgment and, therefore, cannot be determined with precision. Fair values are also estimated at a specific point in time and are based on interest rates and other assumptions at that date. As events change the assumptions underlying these estimates, the fair values of financial instruments will change. Disclosure of fair values is not required for certain items such as lease financing, investments accounted for under the equity method of accounting, obligations of pension and other postretirement benefits, premises and equipment, other real estate, prepaid expenses, the value of long-term relationships with depositors (core deposit intangibles) and other customer relationships, other intangible assets and income tax assets and liabilities. Fair value estimates are presented for existing on- and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses have not been considered in the estimates. Accordingly, the aggregate fair value amounts presented do not purport to represent and should not be considered representative of the underlying market or franchise value of First Guaranty. Because the standard permits many alternative calculation techniques and because numerous assumptions have been used to estimate the fair values, reasonable comparison of the fair value information with other financial institutions' fair value information cannot necessarily be made. The methods and assumptions used to estimate the fair values of financial instruments are as follows: Cash and due from banks, interest-bearing deposits with banks, federal funds sold and federal funds purchased . These items are generally short-term and the carrying amounts reported in the consolidated balance sheets are a reasonable estimation of the fair values. Investment Securities. Fair values are principally based on quoted market prices. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments or the use of discounted cash flow analyses. Loans Held for Sale. Fair values of mortgage loans held for sale are based on commitments on hand from investors or prevailing market prices. These loans are classified within level 3 of the fair value hierarchy. Loans, net . Market values are computed present values using net present value formulas. The present value is the sum of the present value of all projected cash flows on an item at a specified discount rate. The discount rate is set as an appropriate rate index, plus or minus an appropriate spread. These loans are classified within level 3 of the fair value hierarchy. Impaired loans. Fair value of impaired loans is measured by either the fair value of the collateral if the loan is collateral dependent (Level 2 or Level 3), or the present value of expected future cash flows, discounted at the loan's effective interest rate (Level 3). Fair value of the collateral is determined by appraisals or by independent valuation. Cash Surrender of BOLI. The cash surrender value of BOLI approximates fair value. Accrued interest receivable. The carrying amount of accrued interest receivable approximates its fair value. Deposits. Market values are actually computed present values using net present value formulas. The present value is the sum of the present value of all projected cash flows on an item at a specified discount rate. The discount rate is set as an appropriate rate index, plus or minus an appropriate spread. Deposits are classified within level 3 of the fair value hierarchy. Accrued interest payable. The carrying amount of accrued interest payable approximates its fair value. Borrowings . The carrying amount of federal funds purchased and other short-term borrowings approximate their fair values. The fair value of First Guaranty's long-term borrowings is computed using net present value formulas. The present value is the sum of the present value of all projected cash flows on an item at a specified discount rate. The discount rate is set as an appropriate rate index, plus or minus an appropriate spread. Borrowings are classified within level 3 of the fair value hierarchy. Other Unrecognized Financial Instruments. The fair value of commitments to extend credit is estimated using the fees charged to enter into similar legally binding agreements, taking into account the remaining terms of the agreements and customers' credit ratings. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. Noninterest-bearing deposits are held at cost. The fair values of letters of credit are based on fees charged for similar agreements or on estimated cost to terminate them or otherwise settle the obligations with the counterparties at the reporting date. At December 31, 2020 and 2019 the fair value of guarantees under commercial and standby letters of credit was not material. The carrying amounts and estimated fair values of financial instruments at December 31, 2020 were as follows: Fair Value Measurements at December 31, 2020 Using (in thousands) Carrying Amount Level 1 Level 2 Level 3 Total Assets Cash and due from banks $ 298,903 $ 298,903 $ — $ — $ 298,903 Federal funds sold 702 702 — — 702 Securities, available for sale 238,548 3,000 209,359 26,189 238,548 Loans held for sale — — — — — Loans, net 1,819,617 — — 1,846,738 1,846,738 Cash surrender value of BOLI 5,427 — — 5,427 5,427 Accrued interest receivable 11,933 — — 11,933 11,933 Liabilities Deposits $ 2,166,318 $ — $ — $ 2,179,004 2,179,004 Short-term advances from Federal Home Loan Bank 50,000 — — 50,000 50,000 Repurchase agreements 6,121 — — 6,154 6,154 Accrued interest payable 5,292 — — 5,292 5,292 Long-term advances from Federal Home Loan Bank 3,366 — — 3,366 3,366 Senior long-term debt 42,366 — — 42,408 42,408 Junior subordinated debentures 14,777 — — 14,452 14,452 The carrying amounts and estimated fair values of financial instruments at December 31, 2019 were as follows: Fair Value Measurements at December 31, 2019 Using (in thousands) Carrying Amount Level 1 Level 2 Level 3 Total Assets Cash and due from banks $ 66,511 $ 66,511 $ — $ — $ 66,511 Federal funds sold 914 914 — — 914 Securities, available for sale 339,937 — 330,539 9,398 339,937 Securities, held for maturity 86,579 — 86,817 — 86,817 Loans, net 1,514,561 — — 1,515,277 1,515,277 Cash surrender value of BOLI 5,288 — — 5,288 5,288 Accrued interest receivable 8,412 — — 8,412 8,412 Liabilities Deposits $ 1,853,013 $ — $ — $ 1,863,179 1,863,179 Short-term advances from Federal Home Loan Bank 13,079 — — 13,079 13,079 Repurchase agreements 6,840 — — 6,840 6,840 Accrued interest payable 6,047 — — 6,047 6,047 Long-term advances from Federal Home Loan Bank 3,533 — — 3,533 3,533 Senior long-term debt 48,558 — — 48,599 48,599 Junior subordinated debentures 14,737 — — 14,762 14,762 There is no material difference between the contract amount and the estimated fair value of off-balance sheet items that are primarily comprised of short-term unfunded loan commitments that are generally at market prices.

Concentrations of Credit and Ot

Concentrations of Credit and Other Risks	12 Months Ended
	Dec. 31, 2020
Risks and Uncertainties [Abstract]
Concentrations of Credit and Other Risks	Concentrations of Credit and Other Risks First Guaranty monitors loan portfolio concentrations by region, collateral type, loan type, and industry on a monthly basis and has established maximum thresholds as a percentage of its capital to ensure that the desired mix and diversification of its loan portfolio is achieved. First Guaranty is compliant with the established thresholds as of December 31, 2020. Personal, commercial and residential loans are granted to customers, most of who reside in northern and southern areas of Louisiana. Although First Guaranty has a diversified loan portfolio, significant portions of the loans are collateralized by real estate located in Tangipahoa Parish and surrounding parishes in Southeast Louisiana. Declines in the Louisiana economy could result in lower real estate values which could, under certain circumstances, result in losses to First Guaranty. The distribution of commitments to extend credit approximates the distribution of loans outstanding. Commercial and standby letters of credit were granted primarily to commercial borrowers. Approximately 33.0% of First Guaranty's deposits are derived from local governmental agencies at December 31, 2020. These governmental depositing authorities are generally long-term customers. A number of the depositing authorities are under contractual obligation to maintain their operating funds exclusively with First Guaranty. In most cases, First Guaranty is required to pledge securities or letters of credit issued by the Federal Home Loan Bank to the depositing authorities to collateralize their deposits. Under certain circumstances, the withdrawal of all of, or a significant portion of, the deposits of one or more of the depositing authorities may result in a temporary reduction in liquidity, depending primarily on the maturities and/or classifications of the securities pledged against such deposits and the ability to replace such deposits with either new deposits or other borrowings. Public fund deposits totaled $715.3 million at December 31, 2020.

Litigation

Litigation	12 Months Ended
	Dec. 31, 2020
Loss Contingency [Abstract]
Litigation	LitigationFirst Guaranty is subject to various legal proceedings in the normal course of its business. First Guaranty assesses its liabilities and contingencies in connection with outstanding legal proceedings. Where it is probable that First Guaranty will incur a loss and the amount of the loss can be reasonably estimated, First Guaranty records a liability in its consolidated financial statements.  First Guaranty does not record a loss if the loss is not probable or the amount of the loss is not estimable.  First Guaranty is a defendant in a lawsuit alleging overpayment of interest on a loan with a possible loss range of $0.0 million to $0.5 million. Judgment has been rendered against First Guaranty for the full amount, but First Guaranty is exercising its appeal rights. First Guaranty had an accrued liability of $0.1 million at December 31, 2020 related to this lawsuit. First Guaranty is also a defendant in a lawsuit alleging fault for a loss of funds by a customer with a possible loss range of $0.0 million to $1.5 million. No accrued liability has been recorded related to this lawsuit.

Condensed Parent Company Inform

Condensed Parent Company Information	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Condensed Parent Company Information	Condensed Parent Company Information The following condensed financial information reflects the accounts and transactions of First Guaranty Bancshares, Inc. for the dates indicated: First Guaranty Bancshares, Inc. Condensed Balance Sheets December 31, (in thousands) 2020 2019 Assets Cash $ 1,796 $ 633 Investment in bank subsidiary 228,869 224,677 Other assets 5,665 4,427 Total Assets $ 236,330 $ 229,737 Liabilities and Shareholders' Equity Senior long-term debt 42,366 48,558 Junior subordinated debentures 14,777 14,738 Other liabilities 596 406 Total Liabilities 57,739 63,702 Shareholders' Equity 178,591 166,035 Total Liabilities and Shareholders' Equity $ 236,330 $ 229,737 First Guaranty Bancshares, Inc. Condensed Statements of Income December 31, (in thousands) 2020 2019 2018 Operating Income Dividends received from bank subsidiary $ 17,100 $ 13,982 $ 11,788 Net gains on sale of equity securities — 196 — Other income 332 424 289 Total operating income 17,432 14,602 12,077 Operating Expenses Interest expense 2,197 1,795 1,675 Salaries & Benefits 132 208 133 Other expenses 1,225 953 916 Total operating expenses 3,554 2,956 2,724 Income before income tax benefit and increase in equity in undistributed earnings of subsidiary 13,878 11,646 9,353 Income tax benefit 720 494 540 Income before increase in equity in undistributed earnings of subsidiary 14,598 12,140 9,893 Increase in equity in undistributed earnings of subsidiary 5,720 2,101 4,320 Net Income $ 20,318 $ 14,241 $ 14,213 First Guaranty Bancshares, Inc. Condensed Statements of Cash Flows December 31, (in thousands) 2020 2019 2018 Cash flows from operating activities: Net income $ 20,318 $ 14,241 $ 14,213 Adjustments to reconcile net income to net cash provided by operating activities: Increase in equity in undistributed earnings of subsidiary (5,720) (2,101) (4,320) Depreciation and amortization 92 80 43 Gain on sale of securities — (196) — Net change in other liabilities 189 (444) 136 Net change in other assets (1,301) (601) 1,360 Net cash provided by operating activities 13,578 10,979 11,432 Cash flows from investing activities: Proceeds from sales of equity securities 10 1,196 — Purchases of premises and equipment — (136) — Cash paid in acquisition — (43,383) — Net cash used in investing activities 10 (42,323) — Cash flows from financing activities: Proceeds from long-term debt, net of costs — 32,465 — Repayment of long-term debt (6,191) (3,754) (2,941) Common stock issued in private placement — 1,000 — Dividends paid (6,234) (5,803) (5,636) Net cash (used in) provided by financing activities (12,425) 23,908 (8,577) Net increase (decrease) in cash and cash equivalents 1,163 (7,436) 2,855 Cash and cash equivalents at the beginning of the period 633 8,069 5,214 Cash and cash equivalents at the end of the period $ 1,796 $ 633 $ 8,069

Business and Summary of Signi_2

Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Consolidation	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.
Acquisition Accounting	Acquisition Accounting Acquisitions are accounted for under the purchase method of accounting. Purchased assets, including identifiable intangibles, and assumed liabilities are recorded at their respective acquisition date fair values. If the fair value of net assets purchased exceeds the consideration given, a gain on acquisition is recognized. If the consideration given exceeds the fair value of the net assets received, goodwill is recognized. Fair values are subject to refinement for up to one year after the closing date of an acquisition as information relative to closing date fair values becomes available. Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date with no carryover of the related allowance for loan losses. See Acquired Loans section below for accounting policy regarding loans acquired in a business combination.
Use of estimates	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 loan losses, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, and the valuation of investment securities. In connection with the determination of the allowance for loan losses and real estate owned, First Guaranty obtains independent appraisals for significant properties.
Cash and cash equivalents	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	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.
Loans held for sale	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 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 loan losses.
Troubled Debt Restructurings (TDRs)	Troubled Debt Restructurings (TDRs) TDRs are loans in which the borrower is experiencing financial difficulty at the time of restructuring, and the Bank has granted a concession to the borrower. TDRs are undertaken in order to improve the likelihood of recovery on the loan and may take the form of modifications made with the stated interest rate lower than the current market rate for new debt with similar risk, other modifications to the structure of the loan that fall outside of normal underwriting policies and procedures, or in limited circumstances forgiveness of principal and / or interest. TDRs can involve loans remaining on non-accrual, moving to non-accrual, or continuing on accrual status, depending on the individual facts and circumstances of the borrower. TDRs are subject to policies governing accrual and non-accrual evaluation consistent with all other loans as discussed in the "Loans" section above. All loans with the TDR designation are considered to be impaired, even if they are accruing. First Guaranty's policy is to evaluate TDRs that have subsequently been restructured and returned to market terms after 6 months of performance. The evaluation includes a review of the loan file and analysis of the credit to assess the loan terms, including interest rate to insure such terms are consistent with market terms. The loan terms are compared to a sampling of loans with similar terms and risk characteristics, including loans originated by First Guaranty and loans lost to a competitor. The sample provides a guide to determine market terms pursuant to ASC 310-40-50-2. The loan is also evaluated at that time for impairment. A loan determined to be restructured to market terms and not considered impaired will no longer be disclosed as a TDR in the years following the restructuring. These loans will continue to be individually evaluated for impairment. A loan determined to either be restructured to below market terms or to be impaired will remain a TDR.
Credit Quality	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. A loan is considered impaired when, based on current information and events, it is probable that First Guaranty will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by Management in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis for commercial and construction loans by either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's obtainable market price or the fair value of the collateral if the loan is collateral dependent. This process is only applied to impaired loans or relationships in excess of $500,000. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, individual consumer and residential loans are not separately identified for impairment disclosures, unless such loans are the subject of a restructuring agreement. Loans that have been restructured in a troubled debt restructuring will continue to be evaluated individually for impairment, including those no longer requiring disclosure.
Acquired Loans	Acquired Loans Loans are recorded at estimated fair value on their purchase date with no carryover of the related allowance for loan losses. Acquired loans are segregated between those with deteriorated credit quality at acquisition and those deemed as performing. To make this determination, Management considers such factors as past due status, nonaccrual status, credit risk ratings, interest rates and collateral position. The fair value of acquired loans deemed performing is determined by discounting cash flows, both principal and interest, for each pool at prevailing market interest rates as well as consideration of inherent potential losses. The difference between the fair value and principal balances due at acquisition date, the fair value discount, is accreted into income over the estimated life of each loan pool. Loans acquired in a business combination are recorded at their estimated fair value on their purchase date with no carryover of the related allowance for loan losses. Performing acquired loans are subsequently evaluated for any required allowance at each reporting date. An allowance for loan losses is calculated using a similar methodology for originated loans.
Loan fees and costs	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 loan losses	Allowance for loan losses The allowance for loan losses is established through a provision for loan losses charged to expense. Loans are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely. The allowance, which is based on evaluation of the collectability of loans and prior loan loss experience, is an amount that, in the opinion of Management, reflects the risks inherent in the existing loan portfolio and exists at the reporting date. The evaluations take into consideration a number of subjective factors including changes in the nature and volume of the loan portfolio, historical losses, overall portfolio quality, review of specific problem loans, current economic conditions that may affect a borrower's ability to pay including the impact of the COVID-19 pandemic, adequacy of loan collateral and other relevant factors. In addition, regulatory agencies, as an integral part of their examination process, periodically review the estimated losses on loans. Such agencies may require additional recognition of losses based on their judgments about information available to them at the time of their examination. The following are general credit risk factors that affect First Guaranty's 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. 1-4 family, multi-family, 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. Although Management uses available information to recognize losses on loans, because of uncertainties associated with local economic conditions, collateral values and future cash flows on impaired loans, it is reasonably possible that a material change could occur in the allowance for loan losses in the near term. However, the amount of the change that is reasonably possible cannot be estimated. The evaluation of the adequacy of loan collateral is often based upon estimates and appraisals. Because of changing economic conditions, the valuations determined from such estimates and appraisals may also change. Accordingly, First Guaranty may ultimately incur losses that vary from Management's current estimates. Adjustments to the allowance for loan losses will be reported in the period such adjustments become known or can be reasonably estimated. All loan losses are charged to the allowance for loan losses when the loss actually occurs or when the collectability of the principal is unlikely. Recoveries are credited to the allowance at the time of recovery. The allowance consists of specific, general, and unallocated components. The specific component relates to loans that are classified as doubtful, substandard, and impaired. For such loans that are also classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. Also, a specific reserve is allocated for syndicated loans. 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,non-accrual 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 including the impact of COVID-19, 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 loan losses is reviewed on a monthly basis. The monitoring of credit risk also extends to unfunded credit commitments, such as unused commercial credit lines and letters of credit. A reserve is established as needed for estimates of probable losses on such commitments.
Goodwill and intangible assets	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
Premises and equipment	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 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 loan 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	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	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 2017. 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	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	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 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 common share Earnings per share represents income available to common shareholders divided by the weighted average number of common shares outstanding during the period. In December of 2019, First Guaranty issued a pro rata, 10% common stock dividend. The shares issued for the stock dividend have been retrospectively factored into the calculation of earnings per share as well as cash dividends paid on common stock and represented on the face of the financial statements. No convertible shares of First Guaranty's stock are outstanding.
Operating Segments	Operating Segments All of First Guaranty's operations are considered by management to be aggregated into one reportable operating segment. While the chief decision-makers monitor 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.
Reclassifications	Reclassifications Certain reclassifications have been made to prior year end financial statements in order to conform to the classification adopted for reporting in 2020.

Merger Transaction (Tables)

Merger Transaction (Tables)	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Fair Value of Tangible and Intangible Assets Acquired and Liabilities Assumed	Based on management's valuation of tangible and intangible assets acquired and liabilities assumed, the purchase price for the Union acquisition is allocated in the table below. (in thousands) Union Bancshares, Incorporated Cash and due from banks $ 20,063 Securities available for sale 38,813 Loans 184,344 Premises and equipment 7,223 Goodwill 9,428 Intangible assets 4,213 Other real estate 1,595 Other assets 9,480 Total assets acquired $ 275,159 Deposits 205,078 FHLB borrowings 16,617 Repurchase agreements 6,863 Other liabilities 3,218 Total liabilities assumed $ 231,776 Net assets acquired $ 43,383

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Summary Comparison of Securities by Type	A summary comparison of securities by type at December 31, 2020 and 2019 is shown below. December 31, 2020 December 31, 2019 (in thousands) Amortized Cost Gross Gross Fair Value Amortized Cost Gross Gross Fair Value Available for sale: U.S. Treasuries $ 3,000 $ — $ — $ 3,000 $ — $ — $ — $ — U.S. Government Agencies 169,986 77 (405) 169,658 16,380 15 (2) 16,393 Corporate debt securities 36,153 604 (268) 36,489 94,561 1,110 (302) 95,369 Municipal bonds 27,381 781 — 28,162 30,297 1,870 (14) 32,153 Collateralized mortgage obligations — — — — 16,400 40 (43) 16,397 Mortgage-backed securities 1,208 31 — 1,239 179,546 317 (238) 179,625 Total available for sale securities $ 237,728 $ 1,493 $ (673) $ 238,548 $ 337,184 $ 3,352 $ (599) $ 339,937 Held to maturity: U.S. Government Agencies $ — $ — $ — $ — $ 18,175 $ — $ (32) $ 18,143 Municipal bonds — — — — 5,107 182 — 5,289 Mortgage-backed securities — — — — 63,297 200 (112) 63,385 Total held to maturity securities $ — $ — $ — $ — $ 86,579 $ 382 $ (144) $ 86,817
Investments Classified by Contractual Maturity Date	The scheduled maturities of securities at December 31, 2020, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities due to call or prepayments. Mortgage-backed securities are not due at a single maturity because of amortization and potential prepayment of the underlying mortgages. For this reason they are presented separately in the maturity table below. December 31, 2020 (in thousands) Amortized Cost Fair Value Available for sale: Due in one year or less $ 9,635 $ 9,670 Due after one year through five years 6,994 6,995 Due after five years through 10 years 67,675 68,412 Over 10 years 152,216 152,232 Subtotal 236,520 237,309 Mortgage-backed Securities 1,208 1,239 Total available for sale securities $ 237,728 $ 238,548
Schedule of Unrealized Loss on Investments	The following is a summary of the fair value of securities with gross unrealized losses and an aging of those gross unrealized losses at December 31, 2020. December 31, 2020 Less Than 12 Months 12 Months or More Total (in thousands) Number Fair Value Gross Number Fair Value Gross Number Fair Value Gross Available for sale: U.S. Treasuries — $ — $ — — $ — $ — — $ — $ — U.S. Government Agencies 12 131,455 (405) — — — 12 131,455 (405) Corporate debt securities 17 10,286 (144) 4 1,254 (124) 21 11,540 (268) Municipal bonds 1 66 — — — — 1 66 — Mortgage-backed securities — — — 6 11 — 6 11 — Total available for sale securities 30 $ 141,807 $ (549) 10 $ 1,265 $ (124) 40 $ 143,072 $ (673) The following is a summary of the fair value of securities with gross unrealized losses and an aging of those gross unrealized losses at December 31, 2019. December 31, 2019 Less Than 12 Months 12 Months or More Total (in thousands) Number Fair Value Gross Number Fair Value Gross Number Fair Value Gross Available for sale: U.S. Treasuries — $ — $ — — $ — $ — — $ — $ — U.S. Government Agencies 1 4,398 (1) 1 149 (1) 2 4,547 (2) Corporate debt securities 42 21,269 (174) 12 3,184 (128) 54 24,453 (302) Municipal bonds 9 4,285 (14) — — — 9 4,285 (14) Collateralized mortgage obligations 12 10,022 (43) — — — 12 10,022 (43) Mortgage-backed securities 57 91,753 (186) 9 12,121 (52) 66 103,874 (238) Total available for sale securities 121 $ 131,727 $ (418) 22 $ 15,454 $ (181) 143 $ 147,181 $ (599) Held to maturity: U.S. Government Agencies 2 $ 2,177 $ (2) 8 $ 15,965 $ (30) 10 $ 18,142 $ (32) Municipal bonds — — — 1 50 — 1 50 — Mortgage-backed securities 7 8,880 (58) 10 11,343 (54) 17 20,223 (112) Total held to maturity securities 9 $ 11,057 $ (60) 19 $ 27,358 $ (84) 28 $ 38,415 $ (144)
Credit Losses on Debt Securities for which Portion of OTTI Recognized in OCI	The following table presents a roll-forward of the amount of credit losses on debt securities held by First Guaranty for which a portion of OTTI was recognized in other comprehensive income for the year ended December 31, 2020, 2019, and 2018: (in thousands) Year Ended December 31, 2020 Year Ended December 31, 2019 Year Ended December 31, 2018 Beginning balance of credit losses at beginning of year $ — $ 60 $ 60 Other-than-temporary impairment credit losses on securities not previously OTTI 100 — — Increases for additional credit losses on securities previously determined to be OTTI — — — Reduction for increases in cash flows — — — Reduction due to credit impaired securities sold or fully settled — (60) — Ending balance of cumulative credit losses recognized in earnings at end of year $ 100 $ — $ 60
Schedule of Exposure to Investment Securities Issuers that Exceeded 10% of Shareholder's Equity	At December 31, 2020, First Guaranty's exposure to investment securities issuers that exceeded 10% of shareholders' equity was as follows: December 31, 2020 (in thousands) Amortized Cost Fair Value Federal Home Loan Mortgage Corporation (Freddie Mac-FHLMC) 110,177 109,856 Federal Farm Credit Bank (FFCB) 54,263 54,279 Total $ 164,440 $ 164,135

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Summary of Components of Loan Portfolio	The following table summarizes the components of First Guaranty's loan portfolio as of December 31, 2020 and December 31, 2019: December 31, 2020 December 31, 2019 (in thousands except for %) Balance As % of Category Balance As % of Category Real Estate: Construction & land development $ 150,841 8.2 % $ 172,247 11.3 % Farmland 26,880 1.4 % 22,741 1.5 % 1- 4 Family 271,236 14.7 % 289,635 18.9 % Multifamily 45,932 2.5 % 23,973 1.6 % Non-farm non-residential 824,137 44.6 % 616,536 40.3 % Total Real Estate 1,319,026 71.4 % 1,125,132 73.6 % Non-Real Estate: Agricultural 28,335 1.5 % 26,710 1.8 % Commercial and industrial 353,028 19.1 % 268,256 17.5 % Consumer and other 148,783 8.0 % 108,868 7.1 % Total Non-Real Estate 530,146 28.6 % 403,834 26.4 % Total Loans Before Unearned Income 1,849,172 100.0 % 1,528,966 100.0 % Unearned income (5,037) (3,476) Total Loans Net of Unearned Income $ 1,844,135 $ 1,525,490
Summary of Fixed and Floating Rate Loans by Contractual Maturity, Excluding Nonaccrual Loans	The following table summarizes fixed and floating rate loans by contractual maturity, excluding nonaccrual loans, as of December 31, 2020 and December 31, 2019 unadjusted for scheduled principal payments, prepayments, or repricing opportunities. The average life of the loan portfolio may be substantially less than the contractual terms when these adjustments are considered. December 31, 2020 December 31, 2019 (in thousands) Fixed Floating Total Fixed Floating Total One year or less $ 186,252 $ 79,680 $ 265,932 $ 205,596 $ 104,859 $ 310,455 One to five years 740,358 368,259 1,108,617 509,455 286,131 795,586 Five to 15 years 128,860 91,032 219,892 147,502 65,713 213,215 Over 15 years 146,830 92,325 239,155 143,695 51,612 195,307 Subtotal $ 1,202,300 $ 631,296 1,833,596 $ 1,006,248 $ 508,315 1,514,563 Nonaccrual loans 15,576 14,403 Total Loans Before Unearned Income 1,849,172 1,528,966 Unearned income (5,037) (3,476) Total Loans Net of Unearned Income $ 1,844,135 $ 1,525,490
Past due Financing Receivables	The following tables present the age analysis of past due loans at December 31, 2020 and December 31, 2019: As of December 31, 2020 (in thousands) 30-89 Days Past Due 90 Days or Total Past Due Current Total Loans Recorded Investment Real Estate: Construction & land development $ 8,088 $ 1,621 $ 9,709 $ 141,132 $ 150,841 $ 1,000 Farmland 227 857 1,084 25,796 26,880 — 1- 4 family 6,050 7,207 13,257 257,979 271,236 4,980 Multifamily 190 366 556 45,376 45,932 366 Non-farm non-residential 15,792 12,148 27,940 796,197 824,137 4,699 Total Real Estate 30,347 22,199 52,546 1,266,480 1,319,026 11,045 Non-Real Estate: Agricultural 143 3,539 3,682 24,653 28,335 67 Commercial and industrial 663 2,557 3,220 349,808 353,028 1,856 Consumer and other 1,176 372 1,548 147,235 148,783 123 Total Non-Real Estate 1,982 6,468 8,450 521,696 530,146 2,046 Total Loans Before Unearned Income $ 32,329 $ 28,667 $ 60,996 $ 1,788,176 1,849,172 $ 13,091 Unearned income (5,037) Total Loans Net of Unearned Income $ 1,844,135 As of December 31, 2019 (in thousands) 30-89 Days Past Due 90 Days or Total Past Due Current Total Loans Recorded Investment Real Estate: Construction & land development $ 760 $ 429 $ 1,189 $ 171,058 $ 172,247 $ 48 Farmland 6 1,274 1,280 21,461 22,741 — 1- 4 family 8,521 3,682 12,203 277,432 289,635 923 Multifamily — — — 23,973 23,973 — Non-farm non-residential 11,279 6,249 17,528 599,008 616,536 1,603 Total Real Estate 20,566 11,634 32,200 1,092,932 1,125,132 2,574 Non-Real Estate: Agricultural 310 4,800 5,110 21,600 26,710 — Commercial and industrial 2,801 342 3,143 265,113 268,256 15 Consumer and other 794 266 1,060 107,808 108,868 50 Total Non-Real Estate 3,905 5,408 9,313 394,521 403,834 65 Total Loans Before Unearned Income $ 24,471 $ 17,042 $ 41,513 $ 1,487,453 1,528,966 $ 2,639 Unearned income (3,476) Total Loans Net of Unearned Income $ 1,525,490
Summary of Nonaccrual Loans by Class	The following is a summary of nonaccrual loans by class at the dates indicated: As of December 31, (in thousands) 2020 2019 Real Estate: Construction & land development $ 621 $ 381 Farmland 857 1,274 1- 4 family 2,227 2,759 Multifamily — — Non-farm non-residential 7,449 4,646 Total Real Estate 11,154 9,060 Non-Real Estate: Agricultural 3,472 4,800 Commercial and industrial 701 327 Consumer and other 249 216 Total Non-Real Estate 4,422 5,343 Total Nonaccrual Loans $ 15,576 $ 14,403
Credit Exposure of Loan Portfolio, Including Loans Acquired with Deteriorated Credit Quality, by Specific Credit Ratings	The following table identifies the credit exposure of the loan portfolio, including loans acquired with deteriorated credit quality, by specific credit ratings as of the dates indicated: As of December 31, 2020 As of December 31, 2019 (in thousands) Pass Special Mention Substandard Doubtful Total Pass Special Mention Substandard Doubtful Total Real Estate: Construction & land development $ 139,032 $ 10,785 $ 1,024 $ — $ 150,841 $ 163,808 $ 6,180 $ 2,259 $ — $ 172,247 Farmland 22,822 46 4,012 — 26,880 18,223 3,177 1,341 — 22,741 1- 4 family 251,315 7,252 12,669 — 271,236 271,392 4,751 13,492 — 289,635 Multifamily 36,146 1,841 7,945 — 45,932 16,025 805 7,143 — 23,973 Non-farm non-residential 756,760 51,355 16,022 — 824,137 589,800 7,743 18,993 — 616,536 Total Real Estate 1,206,075 71,279 41,672 — 1,319,026 1,059,248 22,656 43,228 — 1,125,132 Non-Real Estate: Agricultural 24,180 92 4,063 — 28,335 21,529 48 5,133 — 26,710 Commercial and industrial 321,957 27,388 3,683 — 353,028 262,416 1,199 4,641 — 268,256 Consumer and other 147,697 442 644 — 148,783 108,618 180 70 — 108,868 Total Non-Real Estate 493,834 27,922 8,390 — 530,146 392,563 1,427 9,844 — 403,834 Total Loans Before Unearned Income $ 1,699,909 $ 99,201 $ 50,062 $ — 1,849,172 $ 1,451,811 $ 24,083 $ 53,072 $ — 1,528,966 Unearned income (5,037) (3,476) Total Loans Net of Unearned Income $ 1,844,135 $ 1,525,490
Carrying Amount of Purchased Impaired Loans	The carrying amount of those loans is as follows at December 31, 2020 and 2019. (in thousands) As of December 31, 2020 As of December 31, 2019 Real Estate: Construction & land development $ 397 $ 526 Farmland — — 1- 4 family 4,102 6,402 Multifamily 900 — Non-farm non-residential 2,396 2,294 Total Real Estate 7,795 9,222 Non-Real Estate: Agricultural 343 — Commercial and industrial 1,017 1,198 Consumer and other — — Total Non-Real Estate 1,360 1,198 Total $ 9,155 $ 10,420
Accretable Yield, or Income Expected to be Collected, on Purchased Loans	The accretable yield, or income expected to be collected, on the purchased loans above is as follows for the years ended December 31, 2020 and 2019. (in thousands) Year Ended December 31, 2020 Year Ended December 31, 2019 Balance, beginning of period $ 3,647 $ 613 Acquisition accretable yield 30 3,367 Accretion (785) (831) Net transfers from nonaccretable difference to accretable yield — 498 Balance, end of period $ 2,892 $ 3,647

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2020
Allowance for Credit Loss [Abstract]
Summary of Changes in Allowance for Loan Losses and Allowance and Loans Individually and Collectively Evaluated for Impairment	A summary of changes in the allowance for loan losses, by loan type, for the years ended December 31, 2020, 2019 and 2018 are as follows: As of December 31, 2020 2019 (in thousands) Beginning Allowance (12/31/19) Charge-offs Recoveries Provision Ending Allowance (12/31/20) Beginning Allowance (12/31/18) Charge-offs Recoveries Provision Ending Allowance (12/31/19) Real Estate: Construction & land development $ 423 $ (265) $ — $ 871 $ 1,029 $ 581 $ — $ — $ (158) $ 423 Farmland 50 — — 412 462 41 — — 9 50 1- 4 family 1,027 (154) 39 1,598 2,510 911 (552) 39 629 1,027 Multifamily 1,038 — — (60) 978 1,318 — — (280) 1,038 Non-farm non-residential 5,277 (550) 178 10,159 15,064 4,771 (2,603) 5 3,104 5,277 Total Real Estate 7,815 (969) 217 12,980 20,043 7,622 (3,155) 44 3,304 7,815 Non-Real Estate: Agricultural 95 (110) 70 126 181 339 (40) — (204) 95 Commercial and industrial 1,909 (265) 128 1,030 2,802 1,909 (879) 267 612 1,909 Consumer and other 1,110 (1,083) 724 739 1,490 891 (1,190) 246 1,163 1,110 Unallocated — — — 2 2 15 — — (15) — Total Non-Real Estate 3,114 (1,458) 922 1,897 4,475 3,154 (2,109) 513 1,556 3,114 Total $ 10,929 $ (2,427) $ 1,139 $ 14,877 $ 24,518 $ 10,776 $ (5,264) $ 557 $ 4,860 $ 10,929 As of December 31, 2018 (in thousands) Beginning Allowance (12/31/17) Charge-offs Recoveries Provision Ending Allowance (12/31/18) Real Estate: Construction & land development $ 628 $ — $ 3 $ (50) $ 581 Farmland 5 — — 36 41 1- 4 family 1,078 (99) 90 (158) 911 Multifamily 994 — 20 304 1,318 Non-farm non-residential 2,811 (404) 89 2,275 4,771 Total Real Estate 5,516 (503) 202 2,407 7,622 Non-Real Estate: Agricultural 187 (300) 26 426 339 Commercial and industrial 2,377 (179) 1,642 (1,931) 1,909 Consumer and other 1,125 (907) 216 457 891 Unallocated 20 — — (5) 15 Total Non-Real Estate 3,709 (1,386) 1,884 (1,053) 3,154 Total $ 9,225 $ (1,889) $ 2,086 $ 1,354 $ 10,776 A summary of the allowance and loans, including loans acquired with deteriorated credit quality, individually and collectively evaluated for impairment are as follows: As of December 31, 2020 (in thousands) Allowance Allowance Individually Evaluated for Purchased Credit-Impairment Allowance Total Allowance Loans Loans Individually Evaluated for Purchased Credit-Impairment Loans Total Loans Real Estate: Construction & land development $ — $ — $ 1,029 $ 1,029 $ — $ 397 $ 150,444 $ 150,841 Farmland — — 462 462 543 — 26,337 26,880 1- 4 family 266 — 2,244 2,510 1,480 4,102 265,654 271,236 Multifamily — — 978 978 — 900 45,032 45,932 Non-farm non-residential 2,280 — 12,784 15,064 9,800 2,396 811,941 824,137 Total Real Estate 2,546 — 17,497 20,043 11,823 7,795 1,299,408 1,319,026 Non-Real Estate: Agricultural — — 181 181 2,531 343 25,461 28,335 Commercial and industrial 97 — 2,705 2,802 1,544 1,017 350,467 353,028 Consumer and other — — 1,490 1,490 — — 148,783 148,783 Unallocated — — 2 2 — — — — Total Non-Real Estate 97 — 4,378 4,475 4,075 1,360 524,711 530,146 Total $ 2,643 $ — $ 21,875 $ 24,518 $ 15,898 $ 9,155 $ 1,824,119 $ 1,849,172 Unearned Income (5,037) Total Loans Net of Unearned Income $ 1,844,135 As of December 31, 2019 (in thousands) Allowance Allowance Individually Evaluated for Purchased Credit-Impairment Allowance Total Allowance Loans Loans Individually Evaluated for Purchased Credit-Impairment Loans Total Loans Real Estate: Construction & land development $ — $ — $ 423 $ 423 $ — $ 526 $ 171,721 $ 172,247 Farmland — — 50 50 543 — 22,198 22,741 1- 4 family 34 — 993 1,027 1,058 6,402 282,175 289,635 Multifamily — — 1,038 1,038 — — 23,973 23,973 Non-farm non-residential 1,879 — 3,398 5,277 12,120 2,294 602,122 616,536 Total Real Estate 1,913 — 5,902 7,815 13,721 9,222 1,102,189 1,125,132 Non-Real Estate: Agricultural — — 95 95 4,030 — 22,680 26,710 Commercial and industrial 111 — 1,798 1,909 2,981 1,198 264,077 268,256 Consumer and other — — 1,110 1,110 — — 108,868 108,868 Unallocated — — — — — — — — Total Non-Real Estate 111 — 3,003 3,114 7,011 1,198 395,625 403,834 Total $ 2,024 $ — $ 8,905 $ 10,929 $ 20,732 $ 10,420 $ 1,497,814 $ 1,528,966 Unearned Income (3,476) Total Loans Net of Unearned Income $ 1,525,490
Summary of Impaired Loans, Excluding Loans Acquired with Deteriorated Credit Quality, by Class	The following is a summary of impaired loans, excluding loans acquired with deteriorated credit quality, by class at December 31, 2020: As of December 31, 2020 (in thousands) Recorded Unpaid Related Average Interest Income Interest Income Impaired Loans with no related allowance: Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — Farmland 543 552 — 543 — — 1- 4 family 511 534 — 527 — — Multifamily — — — — — — Non-farm non-residential 1,227 1,227 — 1,218 80 72 Total Real Estate 2,281 2,313 — 2,288 80 72 Non-Real Estate: Agricultural 2,531 2,661 — 2,594 — — Commercial and industrial 601 601 — 821 48 47 Consumer and other — — — — — — Total Non-Real Estate 3,132 3,262 — 3,415 48 47 Total Impaired Loans with no related allowance 5,413 5,575 — 5,703 128 119 Impaired Loans with an allowance recorded: Real estate: Construction & land development — — — — — — Farmland — — — — — — 1- 4 family 969 969 266 969 5 5 Multifamily — — — — — — Non-farm non-residential 8,573 8,619 2,280 7,550 60 80 Total Real Estate 9,542 9,588 2,546 8,519 65 85 Non-Real Estate: Agricultural — — — — — — Commercial and industrial 943 943 97 981 79 57 Consumer and other — — — — — — Total Non-Real Estate 943 943 97 981 79 57 Total Impaired Loans with an allowance recorded 10,485 10,531 2,643 9,500 144 142 Total Impaired Loans $ 15,898 $ 16,106 $ 2,643 $ 15,203 $ 272 $ 261 The following is a summary of impaired loans, excluding loans acquired with deteriorated credit quality, by class at December 31, 2019: As of December 31, 2019 (in thousands) Recorded Unpaid Related Average Interest Income Interest Income Impaired Loans with no related allowance: Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — Farmland 543 552 — 550 — — 1- 4 family 541 541 — 544 27 22 Multifamily — — — — — — Non-farm non-residential 8,307 8,307 — 9,940 673 688 Total Real Estate 9,391 9,400 — 11,034 700 710 Non-Real Estate: Agricultural 4,030 4,186 — 4,031 12 — Commercial and industrial 1,962 1,962 — 1,788 81 67 Consumer and other — Total Non-Real Estate 5,992 6,148 — 5,819 93 67 Total Impaired Loans with no related allowance 15,383 15,548 — 16,853 793 777 Impaired Loans with an allowance recorded: Real estate: Construction & land development — — — — — — Farmland — — — — — — 1- 4 family 517 517 34 522 — — Multifamily — — — — — — Non-farm non-residential 3,813 4,162 1,879 4,134 194 212 Total Real Estate 4,330 4,679 1,913 4,656 194 212 Non-Real Estate: Agricultural — — — — — — Commercial and industrial 1,019 1,019 111 1,039 81 77 Consumer and other — — — — — — Total Non-Real Estate 1,019 1,019 111 1,039 81 77 Total Impaired Loans with an allowance recorded 5,349 5,698 2,024 5,695 275 289 Total Impaired Loans $ 20,732 $ 21,246 $ 2,024 $ 22,548 $ 1,068 $ 1,066
Troubled Debt Restructurings	The following table is an age analysis of TDRs as of December 31, 2020 and December 31, 2019: December 31, 2020 December 31, 2019 Accruing Loans Accruing Loans (in thousands) Current 30-89 Days Past Due Nonaccrual Total TDRs Current 30-89 Days Past Due Nonaccrual Total TDRs Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — $ — $ — Farmland — — — — — — — — 1- 4 family — — — — — — — — Multifamily — — — — — — — — Non-farm non-residential — — 3,591 3,591 — — — — Total Real Estate — — 3,591 3,591 — — — — Non-Real Estate: Agricultural — — — — — — — — Commercial and industrial — — — — — — — — Consumer and other — — — — — — — — Total Non-Real Estate — — — — — — — — Total $ — $ — $ 3,591 $ 3,591 $ — $ — $ — $ — The following table discloses TDR activity for the twelve months ended December 31, 2020. Trouble Debt Restructured Loans Activity (in thousands) Beginning balance (December 31, 2019) New TDRs Charge-offs Transferred Paydowns Construction to Restructured Other adjustments Ending balance (December 31, 2020) Real Estate: Construction & land development $ — $ — $ — $ — $ — $ — $ — $ — $ — Farmland — — — — — — — — — 1- 4 family — — — — — — — — — Multifamily — — — — — — — — — Non-farm non-residential — 3,613 — — (22) — — — 3,591 Total Real Estate — 3,613 — — (22) — — — 3,591 Non-Real Estate: Agricultural — — — — — — — — — Commercial and industrial — — — — — — — — — Consumer and other — — — — — — — — — Total Non-Real Estate — — — — — — — — — Total Impaired Loans with no related allowance $ — $ 3,613 $ — $ — $ (22) $ — $ — $ — $ 3,591

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Premises and Equipment	The components of premises and equipment at December 31, 2020 and 2019 are as follows: (in thousands) December 31, 2020 December 31, 2019 Land $ 15,180 $ 15,180 Bank premises 40,906 40,536 Furniture and equipment 28,511 27,255 Construction in progress 13,562 9,534 Acquired value 98,159 92,505 Less: accumulated depreciation 38,267 36,041 Net book value $ 59,892 $ 56,464

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-lived Intangible Assets	The following table summarizes intangible assets subject to amortization. December 31, 2020 December 31, 2019 (in thousands) Gross Accumulated Net Gross Accumulated Net Core deposit intangibles $ 16,266 $ 10,451 $ 5,815 $ 16,266 $ 9,739 $ 6,527 Loan servicing assets 1,826 1,054 772 1,558 919 639 Total $ 18,092 $ 11,505 $ 6,587 $ 17,824 $ 10,658 $ 7,166
Amortization Expense of Core Deposit Intangible Assets for Next Five Years	Amortization expense of the core deposit intangible assets for the next five years is as follows: For the Years Ended Estimated Amortization Expense (in thousands) December 31, 2021 $ 644 December 31, 2022 $ 576 December 31, 2023 $ 576 December 31, 2024 $ 576 December 31, 2025 $ 576

Other Real Estate (Tables)

Other Real Estate (Tables)	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Components of Other Real Estate Owned	Other real estate owned consists of the following at the dates indicated: (in thousands) December 31, 2020 December 31, 2019 Real Estate Owned Acquired by Foreclosure: Residential $ 131 $ 559 Construction & land development 311 669 Non-farm non-residential 2,203 3,651 Total Other Real Estate Owned and Foreclosed Property 2,645 4,879 Allowance for Other Real Estate Owned losses (405) — Net Other Real Estate Owned and Foreclosed Property $ 2,240 $ 4,879

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2020
Deposits [Abstract]
Schedule of Maturities of All Time Deposits	A schedule of maturities of all time deposits are as follows: (in thousands) December 31, 2020 2021 $ 355,093 2022 125,678 2023 108,380 2024 113,745 2025 and thereafter 22,733 Total $ 725,629

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Schedule of Short-term Borrowings	Short-term borrowings are summarized as follows: (in thousands) December 31, 2020 December 31, 2019 Federal Home Loan Bank advances $ 50,000 $ 13,079 Repurchase agreements 6,121 6,840 Line of credit — — Total short-term borrowings $ 56,121 $ 19,919
Short-term Borrowings	The following schedule provides certain information about First Guaranty's short-term borrowings for the periods indicated: December 31, (in thousands except for %) 2020 2019 2018 Outstanding at year end $ 56,121 $ 19,919 $ — Maximum month-end outstanding $ 57,048 $ 19,919 $ 37,000 Average daily outstanding $ 48,277 $ 3,320 $ 7,119 Weighted average rate during the year 0.95 % 2.00 % 2.21 % Weighted average rate at year end 0.89 % 2.00 % — %
Obligations on Senior Long-term Debt and Junior Subordinated Debentures	As of December 31, 2020 obligations on long-term advances from FHLB, senior long-term debt and junior subordinated debentures totaled $60.5 million. The scheduled payments are as follows: (in thousands) Long-term Advances from FHLB Senior Junior 2021 $ — $ 4,531 $ — 2022 — 6,041 — 2023 — 6,041 — 2024 — 22,291 — 2025 — 3,504 15,000 2026 and thereafter 3,366 — — Subtotal $ 3,366 $ 3,366 $ 42,408 $ 15,000 Debt issuance costs — (42) (223) Total $ 3,366 $ 42,366 $ 14,777

Capital Requirements (Tables)

Capital Requirements (Tables)	12 Months Ended
	Dec. 31, 2020
Regulatory Capital Requirements Under Banking Regulations [Abstract]
Actual and Required Capital Amounts and Ratios	First Guaranty Bank's actual capital amounts and ratios as of December 31, 2020 and 2019 are presented in the following table. Actual Minimum Capital Requirements Minimum to be Well Capitalized (in thousands except for %) Amount Ratio Amount Ratio Amount Ratio December 31, 2020 Total Risk-based Capital: $ 233,391 12.22 % $ 152,805 8.00 % $ 191,006 10.00 % Tier 1 Capital: $ 209,507 10.97 % $ 114,604 6.00 % $ 152,805 8.00 % Tier 1 Leverage Capital: $ 209,507 8.58 % $ 97,683 4.00 % $ 122,104 5.00 % Common Equity Tier One Capital: $ 209,507 10.97 % $ 85,953 4.50 % $ 124,154 6.50 % December 31, 2019 Total Risk-based Capital: $ 213,962 12.61 % $ 135,697 8.00 % $ 169,621 10.00 % Tier 1 Capital: $ 203,034 11.96 % $ 101,773 6.00 % $ 135,697 8.00 % Tier 1 Leverage Capital: $ 203,034 10.44 % $ 77,771 4.00 % $ 97,214 5.00 % Common Equity Tier One Capital: $ 203,034 11.96 % $ 76,329 4.50 % $ 110,254 6.50 %

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	An analysis of the activity of loans made to such borrowers during the year ended December 31, 2020 and 2019 follows: December 31, (in thousands) 2020 2019 Balance, beginning of year $ 61,820 $ 63,907 Net (Decrease) Increase 17,579 (2,087) Balance, end of year $ 79,399 $ 61,820

Other Expenses (Tables)

Other Expenses (Tables)	12 Months Ended
	Dec. 31, 2020
Other Expenses [Abstract]
Summary of Significant Components of Other Noninterest Expense	The following is a summary of the significant components of other noninterest expense: December 31, (in thousands) 2020 2019 2018 Other noninterest expense: Legal and professional fees $ 2,919 $ 2,648 $ 2,362 Data processing 2,465 1,972 1,692 ATM Fees 1,332 1,217 1,214 Marketing and public relations 1,046 1,456 1,329 Taxes - sales, capital and franchise 1,251 1,094 1,066 Operating supplies 921 674 562 Software expense and amortization 2,354 1,308 1,119 Travel and lodging 726 908 978 Telephone 256 193 208 Amortization of core deposits 712 390 545 Donations 393 603 380 Net costs from other real estate and repossessions 1,653 422 186 Regulatory assessment 1,716 683 941 Other 2,980 2,536 2,204 Total other noninterest expense $ 20,724 $ 16,104 $ 14,786

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Summary of Provision for Income Taxes	The following is a summary of the provision for income taxes included in the Consolidated Statements of Income: December 31, (in thousands) 2020 2019 2018 Current $ 8,964 $ 3,770 $ 3,929 Deferred (3,745) (114) (467) Total $ 5,219 $ 3,656 $ 3,462
Effective Income Tax Rate Reconciliation	The difference between income taxes computed by applying the statutory federal income tax rate and the provision for income taxes in the financial statements is reconciled as follows: December 31, (in thousands except for %) 2020 2019 2018 Statutory tax rate 21.0 % 21.0 % 21.0 % Federal income taxes at statutory rate $ 5,363 $ 3,758 $ 3,712 Tax exempt municipal income (124) (140) (166) Other (20) 38 (84) Total $ 5,219 $ 3,656 $ 3,462
Components of Deferred Tax Assets and Liabilities	The significant components of deferred taxes classified in First Guaranty's Consolidated Balance Sheets at December 31, 2020 and 2019 are as follows: December 31, (in thousands) 2020 2019 Deferred tax assets: Allowance for loan losses $ 4,748 $ 1,720 Other real estate owned 239 257 Unrealized losses on available for sale securities — — Net operating loss 1,190 1,282 Other 581 508 Gross deferred tax assets 6,758 3,767 Deferred tax liabilities: Depreciation and amortization (1,952) (2,010) Core deposit intangibles (1,214) (1,359) Unrealized gains on available for sale securities (172) (578) Discount on purchased loans (161) (267) Other (625) (670) Gross deferred tax liabilities (4,124) (4,884) Net deferred tax assets (liabilities) $ 2,634 $ (1,117)

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Summary of Notional Amounts of Financial Instruments with Off-Balance Sheet Risk	Set forth below is a summary of the notional amounts of the financial instruments with off-balance sheet risk at December 31, 2020 and December 31, 2019. Contract Amount December 31, 2020 December 31, 2019 (in thousands) Commitments to Extend Credit $ 154,047 $ 117,826 Unfunded Commitments under lines of credit $ 169,151 $ 148,127 Commercial and Standby letters of credit $ 11,728 $ 11,258

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The following table summarizes financial assets measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: (in thousands) December 31, 2020 December 31, 2019 Available for Sale Securities Fair Value Measurements Using: Level 1: Quoted Prices in Active Markets For Identical Assets $ 3,000 $ — Level 2: Significant Other Observable Inputs 209,359 330,539 Level 3: Significant Unobservable Inputs 26,189 9,398 Securities available for sale measured at fair value $ 238,548 $ 339,937
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table reconciles assets measured at fair value on a recurring basis using unobservable inputs ( Level 3 ): Level 3 Changes (in thousands) December 31, 2020 December 31, 2019 Balance, beginning of year $ 9,398 $ 4,761 Total gains or losses (realized/unrealized): Included in earnings — — Included in other comprehensive income 256 146 Purchases, sales, issuances and settlements, net 5,361 4,491 Transfers in and/or out of Level 3 11,174 — Balance as of end of year $ 26,189 $ 9,398
Fair Value Measurements, Nonrecurring	The following table measures financial assets and financial liabilities measured at fair value on a non-recurring basis as of December 31, 2020 and December 31, 2019, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value: (in thousands) At December 31, 2020 At December 31, 2019 Fair Value Measurements Using: Impaired Loans Level 1: Quoted Prices in Active Markets For Identical Assets $ — $ — Level 2: Significant Other Observable Inputs — — Level 3: Significant Unobservable Inputs 7,842 4,046 Impaired loans measured at fair value $ 7,842 $ 4,046 Fair Value Measurements Using: Other Real Estate Owned Level 1: Quoted Prices in Active Markets For Identical Assets $ — $ — Level 2: Significant Other Observable Inputs 363 4,158 Level 3: Significant Unobservable Inputs 1,877 721 Other real estate owned measured at fair value $ 2,240 $ 4,879

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Financial Instruments, Owned, at Fair Value [Abstract]
Schedule of Estimated Fair Values and Carrying Values of Financial Instruments	The carrying amounts and estimated fair values of financial instruments at December 31, 2020 were as follows: Fair Value Measurements at December 31, 2020 Using (in thousands) Carrying Amount Level 1 Level 2 Level 3 Total Assets Cash and due from banks $ 298,903 $ 298,903 $ — $ — $ 298,903 Federal funds sold 702 702 — — 702 Securities, available for sale 238,548 3,000 209,359 26,189 238,548 Loans held for sale — — — — — Loans, net 1,819,617 — — 1,846,738 1,846,738 Cash surrender value of BOLI 5,427 — — 5,427 5,427 Accrued interest receivable 11,933 — — 11,933 11,933 Liabilities Deposits $ 2,166,318 $ — $ — $ 2,179,004 2,179,004 Short-term advances from Federal Home Loan Bank 50,000 — — 50,000 50,000 Repurchase agreements 6,121 — — 6,154 6,154 Accrued interest payable 5,292 — — 5,292 5,292 Long-term advances from Federal Home Loan Bank 3,366 — — 3,366 3,366 Senior long-term debt 42,366 — — 42,408 42,408 Junior subordinated debentures 14,777 — — 14,452 14,452 The carrying amounts and estimated fair values of financial instruments at December 31, 2019 were as follows: Fair Value Measurements at December 31, 2019 Using (in thousands) Carrying Amount Level 1 Level 2 Level 3 Total Assets Cash and due from banks $ 66,511 $ 66,511 $ — $ — $ 66,511 Federal funds sold 914 914 — — 914 Securities, available for sale 339,937 — 330,539 9,398 339,937 Securities, held for maturity 86,579 — 86,817 — 86,817 Loans, net 1,514,561 — — 1,515,277 1,515,277 Cash surrender value of BOLI 5,288 — — 5,288 5,288 Accrued interest receivable 8,412 — — 8,412 8,412 Liabilities Deposits $ 1,853,013 $ — $ — $ 1,863,179 1,863,179 Short-term advances from Federal Home Loan Bank 13,079 — — 13,079 13,079 Repurchase agreements 6,840 — — 6,840 6,840 Accrued interest payable 6,047 — — 6,047 6,047 Long-term advances from Federal Home Loan Bank 3,533 — — 3,533 3,533 Senior long-term debt 48,558 — — 48,599 48,599 Junior subordinated debentures 14,737 — — 14,762 14,762

Condensed Parent Company Info_2

Condensed Parent Company Information (Tables)	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	First Guaranty Bancshares, Inc. Condensed Balance Sheets December 31, (in thousands) 2020 2019 Assets Cash $ 1,796 $ 633 Investment in bank subsidiary 228,869 224,677 Other assets 5,665 4,427 Total Assets $ 236,330 $ 229,737 Liabilities and Shareholders' Equity Senior long-term debt 42,366 48,558 Junior subordinated debentures 14,777 14,738 Other liabilities 596 406 Total Liabilities 57,739 63,702 Shareholders' Equity 178,591 166,035 Total Liabilities and Shareholders' Equity $ 236,330 $ 229,737
Condensed Statements of Income	First Guaranty Bancshares, Inc. Condensed Statements of Income December 31, (in thousands) 2020 2019 2018 Operating Income Dividends received from bank subsidiary $ 17,100 $ 13,982 $ 11,788 Net gains on sale of equity securities — 196 — Other income 332 424 289 Total operating income 17,432 14,602 12,077 Operating Expenses Interest expense 2,197 1,795 1,675 Salaries & Benefits 132 208 133 Other expenses 1,225 953 916 Total operating expenses 3,554 2,956 2,724 Income before income tax benefit and increase in equity in undistributed earnings of subsidiary 13,878 11,646 9,353 Income tax benefit 720 494 540 Income before increase in equity in undistributed earnings of subsidiary 14,598 12,140 9,893 Increase in equity in undistributed earnings of subsidiary 5,720 2,101 4,320 Net Income $ 20,318 $ 14,241 $ 14,213
Condensed Statements of Cash Flows	First Guaranty Bancshares, Inc. Condensed Statements of Cash Flows December 31, (in thousands) 2020 2019 2018 Cash flows from operating activities: Net income $ 20,318 $ 14,241 $ 14,213 Adjustments to reconcile net income to net cash provided by operating activities: Increase in equity in undistributed earnings of subsidiary (5,720) (2,101) (4,320) Depreciation and amortization 92 80 43 Gain on sale of securities — (196) — Net change in other liabilities 189 (444) 136 Net change in other assets (1,301) (601) 1,360 Net cash provided by operating activities 13,578 10,979 11,432 Cash flows from investing activities: Proceeds from sales of equity securities 10 1,196 — Purchases of premises and equipment — (136) — Cash paid in acquisition — (43,383) — Net cash used in investing activities 10 (42,323) — Cash flows from financing activities: Proceeds from long-term debt, net of costs — 32,465 — Repayment of long-term debt (6,191) (3,754) (2,941) Common stock issued in private placement — 1,000 — Dividends paid (6,234) (5,803) (5,636) Net cash (used in) provided by financing activities (12,425) 23,908 (8,577) Net increase (decrease) in cash and cash equivalents 1,163 (7,436) 2,855 Cash and cash equivalents at the beginning of the period 633 8,069 5,214 Cash and cash equivalents at the end of the period $ 1,796 $ 633 $ 8,069

Business and Summary of Signi_3

Business and Summary of Significant Accounting Policies (Details)	1 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020USD ($)facilityofficeatmsegmentpayment
Accounting Policies [Abstract]
Number of banking offices | office		34
Number of drive up banking facility | facility		1
Number of automated teller machines (ATMs) | atm		46
Acquisition Accounting
Maximum period of fair value refinement after closing date of acquisition		1 year
Loans
Past due period after which evaluation is made for discontinuation of interest accrual on loan		90 days
Period of payment performance after which loans are returned to accrual status		6 months
Troubled Debt Restructurings (TDRs)
Period of performance, after which the Company evaluates TDRs that have subsequently been restructured and returned to market terms		6 months
Credit Quality
Minimum balance of impaired loans over which impairment method is applied | $		$ 500,000
Earnings per common share
Common stock, dividend paid percentage	10.00%
Operating Segments
Number of reportable operating segments | segment		1
Minimum
Loans
Threshold period past due for charge-off of loans		90 days
Maximum
Loans
Threshold period past due for charge-off of loans		120 days
Single-Family Residential | Fixed Rate Residential Mortgage
Loans held for sale
Period within which loans are sold in secondary market		30 days
All Loans Except Mortgage Loans
Loans
Past due period after which loans are considered past due		30 days
Mortgage Loans
Loans
Number of consecutive payments missed after which loans are considered past due | payment		2
Building and Building Improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life		10 years
Building and Building Improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life		40 years
Equipment, Fixtures and Automobiles | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life		3 years
Equipment, Fixtures and Automobiles | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life		10 years
Core Deposits | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period		7 years
Core Deposits | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period		15 years
Consumer Portfolio Segment
Credit Quality
Period past due after which loans are considered substandard		90 days

Merger Transaction - Narrative

Merger Transaction - Narrative (Details) - USD ($)	Nov. 07, 2019	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill		$ 12,900,000	$ 12,942,000
Goodwill, expected tax deductible amount		$ 0
Premier Bancshares, Inc.
Business Acquisition [Line Items]
Percentage of outstanding shares acquired	100.00%
Acquisition value paid in cash	$ 43,400,000
Goodwill	9,428,000
Intangible assets	4,213,000
Premier Bancshares, Inc. | Core Deposits
Business Acquisition [Line Items]
Intangible assets	$ 4,200,000

Merger Transaction - Fair Value

Merger Transaction - Fair Value of Assets and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Nov. 07, 2019
Business Acquisition [Line Items]
Goodwill	$ 12,900	$ 12,942
Premier Bancshares, Inc.
Business Acquisition [Line Items]
Cash and due from banks			$ 20,063
Securities available for sale			38,813
Loans			184,344
Premises and equipment			7,223
Goodwill			9,428
Intangible assets			4,213
Other real estate			1,595
Other assets			9,480
Total assets acquired			275,159
Deposits			205,078
FHLB borrowings			16,617
Repurchase agreements			6,863
Other liabilities			3,218
Total liabilities assumed			231,776
Net assets acquired			$ 43,383

Cash and Due from Banks (Detail

Cash and Due from Banks (Details)	Dec. 31, 2020USD ($)account	Dec. 31, 2019USD ($)account
Cash and Cash Equivalents [Abstract]
Reserve maintained at Federal Reserve Bank	$ 0	$ 0
Number of accounts that exceeded FDIC insurable limit | account	0	2
Insurable limit		$ 5,700,000

Securities - Summary Comparison

Securities - Summary Comparison of Securities by Type (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Available for sale:
Amortized Cost	$ 237,728	$ 337,184
Gross Unrealized Gains	1,493	3,352
Gross Unrealized Losses	(673)	(599)
Fair Value	238,548	339,937
Held to maturity:
Amortized Cost	0	86,579
Gross Unrealized Gains	0	382
Gross Unrealized Losses	0	(144)
Fair Value	0	86,817
U.S. Treasuries
Available for sale:
Amortized Cost	3,000	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	3,000	0
U.S. Government Agencies
Available for sale:
Amortized Cost	169,986	16,380
Gross Unrealized Gains	77	15
Gross Unrealized Losses	(405)	(2)
Fair Value	169,658	16,393
Corporate debt securities
Available for sale:
Amortized Cost	36,153	94,561
Gross Unrealized Gains	604	1,110
Gross Unrealized Losses	(268)	(302)
Fair Value	36,489	95,369
Municipal bonds
Available for sale:
Amortized Cost	27,381	30,297
Gross Unrealized Gains	781	1,870
Gross Unrealized Losses	0	(14)
Fair Value	28,162	32,153
Held to maturity:
Amortized Cost	0	5,107
Gross Unrealized Gains	0	182
Gross Unrealized Losses	0	0
Fair Value	0	5,289
Collateralized mortgage obligations
Available for sale:
Amortized Cost	0	16,400
Gross Unrealized Gains	0	40
Gross Unrealized Losses	0	(43)
Fair Value	0	16,397
Mortgage-backed securities
Available for sale:
Amortized Cost	1,208	179,546
Gross Unrealized Gains	31	317
Gross Unrealized Losses	0	(238)
Fair Value	1,239	179,625
Held to maturity:
Amortized Cost	0	63,297
Gross Unrealized Gains	0	200
Gross Unrealized Losses	0	(112)
Fair Value	0	63,385
U.S. Government Agencies
Held to maturity:
Amortized Cost	0	18,175
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(32)
Fair Value	$ 0	$ 18,143

Securities - Scheduled Maturiti

Securities - Scheduled Maturities of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Amortized Cost
Due in one year or less	$ 9,635
Due after one year through five years	6,994
Due after five years through 10 years	67,675
Over 10 years	152,216
Subtotal	236,520
Amortized Cost	237,728	$ 337,184
Fair Value
Due in one year or less	9,670
Due after one year through five years	6,995
Due after five years through 10 years	68,412
Over 10 years	152,232
Subtotal	237,309
Fair value	238,548	339,937
Collateralized mortgage obligations
Amortized Cost
Amortized Cost	0	16,400
Fair Value
Fair value	0	16,397
Mortgage-backed securities
Amortized Cost
Without single maturity date	1,208
Amortized Cost	1,208	179,546
Fair Value
Without single maturity date	1,239
Fair value	$ 1,239	$ 179,625

Securities - Summary of Securit

Securities - Summary of Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2020USD ($)loan	Dec. 31, 2019USD ($)loan
Available for sale:
Less Than 12 Months, Number of Securities | loan	30	121
Less Than 12 Months, Fair Value	$ 141,807	$ 131,727
Less Than 12 Months, Gross Unrealized Losses	$ (549)	$ (418)
12 Months or More, Number of Securities | loan	10	22
12 Months or More, Fair Value	$ 1,265	$ 15,454
12 Months or More, Gross Unrealized Losses	$ (124)	$ (181)
Total, Number of Securities | loan	40	143
Total, Fair Value	$ 143,072	$ 147,181
Total, Gross Unrealized Losses	$ (673)	$ (599)
Held to maturity:
Less Than 12 Months, Number of Securities | loan		9
Less Than 12 Months, Fair Value		$ 11,057
Less Than 12 Months, Gross Unrealized Losses		$ (60)
12 Months or More, Number of Securities | loan		19
12 Months or More, Fair Value		$ 27,358
12 Months or More, Gross Unrealized Losses		$ (84)
Total, Number of Securities | loan		28
Total, Fair Value		$ 38,415
Total, Gross Unrealized Losses		$ (144)
U.S. Treasuries
Available for sale:
Less Than 12 Months, Number of Securities | loan	0	0
Less Than 12 Months, Fair Value	$ 0	$ 0
Less Than 12 Months, Gross Unrealized Losses	$ 0	$ 0
12 Months or More, Number of Securities | loan	0	0
12 Months or More, Fair Value	$ 0	$ 0
12 Months or More, Gross Unrealized Losses	$ 0	$ 0
Total, Number of Securities | loan	0	0
Total, Fair Value	$ 0	$ 0
Total, Gross Unrealized Losses	$ 0	$ 0
U.S. Government Agencies
Available for sale:
Less Than 12 Months, Number of Securities | loan	12	1
Less Than 12 Months, Fair Value	$ 131,455	$ 4,398
Less Than 12 Months, Gross Unrealized Losses	$ (405)	$ (1)
12 Months or More, Number of Securities | loan	0	1
12 Months or More, Fair Value	$ 0	$ 149
12 Months or More, Gross Unrealized Losses	$ 0	$ (1)
Total, Number of Securities | loan	12	2
Total, Fair Value	$ 131,455	$ 4,547
Total, Gross Unrealized Losses	$ (405)	$ (2)
Corporate debt securities
Available for sale:
Less Than 12 Months, Number of Securities | loan	17	42
Less Than 12 Months, Fair Value	$ 10,286	$ 21,269
Less Than 12 Months, Gross Unrealized Losses	$ (144)	$ (174)
12 Months or More, Number of Securities | loan	4	12
12 Months or More, Fair Value	$ 1,254	$ 3,184
12 Months or More, Gross Unrealized Losses	$ (124)	$ (128)
Total, Number of Securities | loan	21	54
Total, Fair Value	$ 11,540	$ 24,453
Total, Gross Unrealized Losses	$ (268)	$ (302)
Municipal bonds
Available for sale:
Less Than 12 Months, Number of Securities | loan	1	9
Less Than 12 Months, Fair Value	$ 66	$ 4,285
Less Than 12 Months, Gross Unrealized Losses	$ 0	$ (14)
12 Months or More, Number of Securities | loan	0	0
12 Months or More, Fair Value	$ 0	$ 0
12 Months or More, Gross Unrealized Losses	$ 0	$ 0
Total, Number of Securities | loan	1	9
Total, Fair Value	$ 66	$ 4,285
Total, Gross Unrealized Losses	$ 0	$ (14)
Held to maturity:
Less Than 12 Months, Number of Securities | loan		0
Less Than 12 Months, Fair Value		$ 0
Less Than 12 Months, Gross Unrealized Losses		$ 0
12 Months or More, Number of Securities | loan		1
12 Months or More, Fair Value		$ 50
12 Months or More, Gross Unrealized Losses		$ 0
Total, Number of Securities | loan		1
Total, Fair Value		$ 50
Total, Gross Unrealized Losses		$ 0
Collateralized mortgage obligations
Available for sale:
Less Than 12 Months, Number of Securities | loan		12
Less Than 12 Months, Fair Value		$ 10,022
Less Than 12 Months, Gross Unrealized Losses		$ (43)
12 Months or More, Number of Securities | loan		0
12 Months or More, Fair Value		$ 0
12 Months or More, Gross Unrealized Losses		$ 0
Total, Number of Securities | loan		12
Total, Fair Value		$ 10,022
Total, Gross Unrealized Losses		$ (43)
Mortgage-backed securities
Available for sale:
Less Than 12 Months, Number of Securities | loan	0	57
Less Than 12 Months, Fair Value	$ 0	$ 91,753
Less Than 12 Months, Gross Unrealized Losses	$ 0	$ (186)
12 Months or More, Number of Securities | loan	6	9
12 Months or More, Fair Value	$ 11	$ 12,121
12 Months or More, Gross Unrealized Losses	$ 0	$ (52)
Total, Number of Securities | loan	6	66
Total, Fair Value	$ 11	$ 103,874
Total, Gross Unrealized Losses	$ 0	$ (238)
Held to maturity:
Less Than 12 Months, Number of Securities | loan		7
Less Than 12 Months, Fair Value		$ 8,880
Less Than 12 Months, Gross Unrealized Losses		$ (58)
12 Months or More, Number of Securities | loan		10
12 Months or More, Fair Value		$ 11,343
12 Months or More, Gross Unrealized Losses		$ (54)
Total, Number of Securities | loan		17
Total, Fair Value		$ 20,223
Total, Gross Unrealized Losses		$ (112)
U.S. Government Agencies
Held to maturity:
Less Than 12 Months, Number of Securities | loan		2
Less Than 12 Months, Fair Value		$ 2,177
Less Than 12 Months, Gross Unrealized Losses		$ (2)
12 Months or More, Number of Securities | loan		8
12 Months or More, Fair Value		$ 15,965
12 Months or More, Gross Unrealized Losses		$ (30)
Total, Number of Securities | loan		10
Total, Fair Value		$ 18,142
Total, Gross Unrealized Losses		$ (32)

Securities - Narrative (Details

Securities - Narrative (Details)	12 Months Ended
	Dec. 31, 2020USD ($)security	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of debt securities with unrealized losses | security	40
Unrealized losses on debt securities in continuous loss position as percentage of total individual securities' amortized cost basis	0.50%
Unrealized losses on debt securities in continuous loss position as percentage of amortized cost basis of investment securities portfolio	0.30%
Number of debt securities in continuous loss position for over 12 months | security	10
Debt securities in a continuous loss position for over 12 months, amortized cost basis	$ 1,400,000
Debt securities in a continuous loss position for over 12 months, unrealized loss	$ 100,000
Number of securities with other than temporary impairment loss | security	1
Other-than-temporary impairment credit losses on securities not previously OTTI	$ 100,000	$ 0	$ 0
Original book balance	100,000
Other-than-temporary impairment credit losses on securities	0	0	0
Carrying value of pledged securities	184,000,000	212,800,000
Gross realized gains on sales of securities	14,700,000	800,000	100,000
Gross realized losses	100,000	1,100,000	1,900,000
Tax (benefit) provision applicable to these realized net (losses)/gains	3,100,000	(79,000)	(400,000)
Proceeds from sales of securities	394,900,000	90,500,000	$ 114,500,000
Net unrealized gains (losses) on available-for-sale securities included in AOCI , net of applicable income taxes	600,000	2,200,000
Losses reclassified out of AOCI into earnings, net of tax	$ 11,700,000	$ 300,000

Securities - Other Than Tempora

Securities - Other Than Temporary Impairments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning balance of credit losses at beginning of year	$ 0	$ 60,000	$ 60,000
Other-than-temporary impairment credit losses on securities not previously OTTI	100,000	0	0
Increases for additional credit losses on securities previously determined to be OTTI	0	0	0
Reduction for increases in cash flows	0	0	0
Reduction due to credit impaired securities sold or fully settled	0	(60,000)	0
Ending balance of cumulative credit losses recognized in earnings at end of year	$ 100,000	$ 0	$ 60,000

Securities - Exposure to Invest

Securities - Exposure to Investment Securities Issuers That Exceeded 10 Percent of Stockholders' Equity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Concentration Risk [Line Items]
Amortized Cost	$ 238,548	$ 426,516
Stockholders' Equity, Total
Concentration Risk [Line Items]
Amortized Cost	164,440
Fair Value	164,135
Stockholders' Equity, Total | Federal Home Loan Mortgage Corporation (Freddie Mac-FHLMC)
Concentration Risk [Line Items]
Amortized Cost	110,177
Fair Value	109,856
Stockholders' Equity, Total | Federal Farm Credit Bank (FFCB)
Concentration Risk [Line Items]
Amortized Cost	54,263
Fair Value	$ 54,279

Loans - Components of Loan Port

Loans - Components of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
As % of Category
Percent of category	100.00%	100.00%
Balance
Total Loans Before Unearned Income	$ 1,849,172	$ 1,528,966
Unearned income	(5,037)	(3,476)
Total Loans Net of Unearned Income	$ 1,844,135	$ 1,525,490
Real Estate
As % of Category
Percent of category	71.40%	73.60%
Balance
Total Loans Before Unearned Income	$ 1,319,026	$ 1,125,132
Real Estate | Construction & land development
As % of Category
Percent of category	8.20%	11.30%
Balance
Total Loans Before Unearned Income	$ 150,841	$ 172,247
Real Estate | Farmland
As % of Category
Percent of category	1.40%	1.50%
Balance
Total Loans Before Unearned Income	$ 26,880	$ 22,741
Real Estate | 1- 4 Family
As % of Category
Percent of category	14.70%	18.90%
Balance
Total Loans Before Unearned Income	$ 271,236	$ 289,635
Real Estate | Multifamily
As % of Category
Percent of category	2.50%	1.60%
Balance
Total Loans Before Unearned Income	$ 45,932	$ 23,973
Real Estate | Non-farm non-residential
As % of Category
Percent of category	44.60%	40.30%
Balance
Total Loans Before Unearned Income	$ 824,137	$ 616,536
Non-Real Estate
As % of Category
Percent of category	28.60%	26.40%
Balance
Total Loans Before Unearned Income	$ 530,146	$ 403,834
Non-Real Estate | Agricultural
As % of Category
Percent of category	1.50%	1.80%
Balance
Total Loans Before Unearned Income	$ 28,335	$ 26,710
Non-Real Estate | Commercial and industrial
As % of Category
Percent of category	19.10%	17.50%
Balance
Total Loans Before Unearned Income	$ 353,028	$ 268,256
Non-Real Estate | Consumer and other
As % of Category
Percent of category	8.00%	7.10%
Balance
Total Loans Before Unearned Income	$ 148,783	$ 108,868

Loans - Fixed and Floating Rate

Loans - Fixed and Floating Rate Loans by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivables, Fixed and Floating Rate Loans by Contractual Maturity [Abstract]
One year or less	$ 265,932	$ 310,455
One to five years	1,108,617	795,586
Five to 15 years	219,892	213,215
Over 15 years	239,155	195,307
Subtotal	1,833,596	1,514,563
Nonaccrual loans	15,576	14,403
Total Loans Before Unearned Income	1,849,172	1,528,966
Unearned income	(5,037)	(3,476)
Loans, net of unearned income	1,844,135	1,525,490
Fixed
Financing Receivables, Fixed and Floating Rate Loans by Contractual Maturity [Abstract]
One year or less	186,252	205,596
One to five years	740,358	509,455
Five to 15 years	128,860	147,502
Over 15 years	146,830	143,695
Subtotal	1,202,300	1,006,248
Floating
Financing Receivables, Fixed and Floating Rate Loans by Contractual Maturity [Abstract]
One year or less	79,680	104,859
One to five years	368,259	286,131
Five to 15 years	91,032	65,713
Over 15 years	92,325	51,612
Subtotal	631,296	508,315
Loans at interest rate floor	$ 305,000	$ 153,300

Loans - Receivables Past Due (D

Loans - Receivables Past Due (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 60,996	$ 41,513
Current	1,788,176	1,487,453
Total Loans Before Unearned Income	1,849,172	1,528,966
Unearned income	(5,037)	(3,476)
Total Loans Net of Unearned Income	1,844,135	1,525,490
Recorded Investment 90 Days Accruing	13,091	2,639	$ 100
30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	32,329	24,471
90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	28,667	17,042
Real Estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	52,546	32,200
Current	1,266,480	1,092,932
Total Loans Before Unearned Income	1,319,026	1,125,132
Recorded Investment 90 Days Accruing	11,045	2,574
Real Estate | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	30,347	20,566
Real Estate | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	22,199	11,634
Real Estate | Construction & land development
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	9,709	1,189
Current	141,132	171,058
Total Loans Before Unearned Income	150,841	172,247
Recorded Investment 90 Days Accruing	1,000	48
Real Estate | Construction & land development | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	8,088	760
Real Estate | Construction & land development | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,621	429
Real Estate | Farmland
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,084	1,280
Current	25,796	21,461
Total Loans Before Unearned Income	26,880	22,741
Recorded Investment 90 Days Accruing	0	0
Real Estate | Farmland | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	227	6
Real Estate | Farmland | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	857	1,274
Real Estate | 1- 4 Family
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	13,257	12,203
Current	257,979	277,432
Total Loans Before Unearned Income	271,236	289,635
Recorded Investment 90 Days Accruing	4,980	923
Real Estate | 1- 4 Family | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	6,050	8,521
Real Estate | 1- 4 Family | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	7,207	3,682
Real Estate | Multifamily
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	556	0
Current	45,376	23,973
Total Loans Before Unearned Income	45,932	23,973
Recorded Investment 90 Days Accruing	366	0
Real Estate | Multifamily | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	190	0
Real Estate | Multifamily | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	366	0
Real Estate | Non-farm non-residential
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	27,940	17,528
Current	796,197	599,008
Total Loans Before Unearned Income	824,137	616,536
Recorded Investment 90 Days Accruing	4,699	1,603
Real Estate | Non-farm non-residential | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	15,792	11,279
Real Estate | Non-farm non-residential | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	12,148	6,249
Non-Real Estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	8,450	9,313
Current	521,696	394,521
Total Loans Before Unearned Income	530,146	403,834
Recorded Investment 90 Days Accruing	2,046	65
Non-Real Estate | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,982	3,905
Non-Real Estate | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	6,468	5,408
Non-Real Estate | Agricultural
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,682	5,110
Current	24,653	21,600
Total Loans Before Unearned Income	28,335	26,710
Recorded Investment 90 Days Accruing	67	0
Non-Real Estate | Agricultural | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	143	310
Non-Real Estate | Agricultural | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,539	4,800
Non-Real Estate | Commercial and industrial
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	3,220	3,143
Current	349,808	265,113
Total Loans Before Unearned Income	353,028	268,256
Recorded Investment 90 Days Accruing	1,856	15
Non-Real Estate | Commercial and industrial | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	663	2,801
Non-Real Estate | Commercial and industrial | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	2,557	342
Non-Real Estate | Consumer and other
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,548	1,060
Current	147,235	107,808
Total Loans Before Unearned Income	148,783	108,868
Recorded Investment 90 Days Accruing	123	50
Non-Real Estate | Consumer and other | 30-89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	1,176	794
Non-Real Estate | Consumer and other | 90 Days or Greater Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	$ 372	$ 266

Loans - Nonaccrual Loans (Detai

Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	$ 15,576	$ 14,403
Real Estate
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	11,154	9,060
Real Estate | Construction & land development
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	621	381
Real Estate | Farmland
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	857	1,274
Real Estate | 1- 4 Family
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	2,227	2,759
Real Estate | Multifamily
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	0	0
Real Estate | Non-farm non-residential
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	7,449	4,646
Non-Real Estate
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	4,422	5,343
Non-Real Estate | Agricultural
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	3,472	4,800
Non-Real Estate | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	701	327
Non-Real Estate | Consumer and other
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	$ 249	$ 216

Loans - Credit Exposure of Port

Loans - Credit Exposure of Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	$ 1,849,172	$ 1,528,966
Unearned income	(5,037)	(3,476)
Loans, net of unearned income	1,844,135	1,525,490
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	1,699,909	1,451,811
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	99,201	24,083
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	50,062	53,072
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	1,319,026	1,125,132
Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	1,206,075	1,059,248
Real Estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	71,279	22,656
Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	41,672	43,228
Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Real Estate | Construction & land development
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	150,841	172,247
Real Estate | Construction & land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	139,032	163,808
Real Estate | Construction & land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	10,785	6,180
Real Estate | Construction & land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	1,024	2,259
Real Estate | Construction & land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Real Estate | Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	26,880	22,741
Real Estate | Farmland | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	22,822	18,223
Real Estate | Farmland | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	46	3,177
Real Estate | Farmland | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	4,012	1,341
Real Estate | Farmland | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Real Estate | 1- 4 Family
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	271,236	289,635
Real Estate | 1- 4 Family | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	251,315	271,392
Real Estate | 1- 4 Family | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	7,252	4,751
Real Estate | 1- 4 Family | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	12,669	13,492
Real Estate | 1- 4 Family | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Real Estate | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	45,932	23,973
Real Estate | Multifamily | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	36,146	16,025
Real Estate | Multifamily | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	1,841	805
Real Estate | Multifamily | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	7,945	7,143
Real Estate | Multifamily | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Real Estate | Non-farm non-residential
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	824,137	616,536
Real Estate | Non-farm non-residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	756,760	589,800
Real Estate | Non-farm non-residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	51,355	7,743
Real Estate | Non-farm non-residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	16,022	18,993
Real Estate | Non-farm non-residential | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Non-Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	530,146	403,834
Non-Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	493,834	392,563
Non-Real Estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	27,922	1,427
Non-Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	8,390	9,844
Non-Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Non-Real Estate | Agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	28,335	26,710
Non-Real Estate | Agricultural | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	24,180	21,529
Non-Real Estate | Agricultural | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	92	48
Non-Real Estate | Agricultural | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	4,063	5,133
Non-Real Estate | Agricultural | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Non-Real Estate | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	353,028	268,256
Non-Real Estate | Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	321,957	262,416
Non-Real Estate | Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	27,388	1,199
Non-Real Estate | Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	3,683	4,641
Non-Real Estate | Commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	0	0
Non-Real Estate | Consumer and other
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	148,783	108,868
Non-Real Estate | Consumer and other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	147,697	108,618
Non-Real Estate | Consumer and other | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	442	180
Non-Real Estate | Consumer and other | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	644	70
Non-Real Estate | Consumer and other | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Before Unearned Income	$ 0	$ 0

Loans - Purchased Impaired Loan

Loans - Purchased Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Carrying amount	$ 9,155	$ 10,420
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance, beginning of period	3,647	613
Acquisition accretable yield	30	3,367
Accretion	(785)	(831)
Net transfers from nonaccretable difference to accretable yield	0	498
Balance, end of period	2,892	3,647
Real Estate
Financing Receivable, Impaired [Line Items]
Carrying amount	7,795	9,222
Real Estate | Construction & land development
Financing Receivable, Impaired [Line Items]
Carrying amount	397	526
Real Estate | Farmland
Financing Receivable, Impaired [Line Items]
Carrying amount	0	0
Real Estate | 1- 4 Family
Financing Receivable, Impaired [Line Items]
Carrying amount	4,102	6,402
Real Estate | Multifamily
Financing Receivable, Impaired [Line Items]
Carrying amount	900	0
Real Estate | Non-farm non-residential
Financing Receivable, Impaired [Line Items]
Carrying amount	2,396	2,294
Non-Real Estate
Financing Receivable, Impaired [Line Items]
Carrying amount	1,360	1,198
Non-Real Estate | Agricultural
Financing Receivable, Impaired [Line Items]
Carrying amount	343	0
Non-Real Estate | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Carrying amount	1,017	1,198
Non-Real Estate | Consumer and other
Financing Receivable, Impaired [Line Items]
Carrying amount	$ 0	$ 0

Allowance for Loan Losses - Sum

Allowance for Loan Losses - Summary of Changes in Allowance for Loan Losses, by Portfolio Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	$ 10,929	$ 10,776	$ 9,225
Charge-offs	(2,427)	(5,264)	(1,889)
Recoveries	1,139	557	2,086
Provision for loan losses	14,877	4,860	1,354
Ending allowance	24,518	10,929	10,776
Real Estate
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	7,815	7,622	5,516
Charge-offs	(969)	(3,155)	(503)
Recoveries	217	44	202
Provision for loan losses	12,980	3,304	2,407
Ending allowance	20,043	7,815	7,622
Real Estate | Construction & land development
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	423	581	628
Charge-offs	(265)	0	0
Recoveries	0	0	3
Provision for loan losses	871	(158)	(50)
Ending allowance	1,029	423	581
Real Estate | Farmland
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	50	41	5
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for loan losses	412	9	36
Ending allowance	462	50	41
Real Estate | 1- 4 Family
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	1,027	911	1,078
Charge-offs	(154)	(552)	(99)
Recoveries	39	39	90
Provision for loan losses	1,598	629	(158)
Ending allowance	2,510	1,027	911
Real Estate | Multifamily
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	1,038	1,318	994
Charge-offs	0	0	0
Recoveries	0	0	20
Provision for loan losses	(60)	(280)	304
Ending allowance	978	1,038	1,318
Real Estate | Non-farm non-residential
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	5,277	4,771	2,811
Charge-offs	(550)	(2,603)	(404)
Recoveries	178	5	89
Provision for loan losses	10,159	3,104	2,275
Ending allowance	15,064	5,277	4,771
Non-Real Estate
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	3,114	3,154	3,709
Charge-offs	(1,458)	(2,109)	(1,386)
Recoveries	922	513	1,884
Provision for loan losses	1,897	1,556	(1,053)
Ending allowance	4,475	3,114	3,154
Non-Real Estate | Agricultural
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	95	339	187
Charge-offs	(110)	(40)	(300)
Recoveries	70	0	26
Provision for loan losses	126	(204)	426
Ending allowance	181	95	339
Non-Real Estate | Commercial and industrial
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	1,909	1,909	2,377
Charge-offs	(265)	(879)	(179)
Recoveries	128	267	1,642
Provision for loan losses	1,030	612	(1,931)
Ending allowance	2,802	1,909	1,909
Non-Real Estate | Consumer and other
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	1,110	891	1,125
Charge-offs	(1,083)	(1,190)	(907)
Recoveries	724	246	216
Provision for loan losses	739	1,163	457
Ending allowance	1,490	1,110	891
Non-Real Estate | Unallocated
Summary of changes in allowance for loan losses, by portfolio type [Roll Forward]
Beginning allowance	0	15	20
Charge-offs	0	0	0
Recoveries	0	0	0
Provision for loan losses	2	(15)	(5)
Ending allowance	$ 2	$ 0	$ 15

Allowance for Loan Losses - S_2

Allowance for Loan Losses - Summary of Allowance and Loans Individually and Collectively Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	$ 2,643	$ 2,024
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	21,875	8,905
Total Allowance for Credit Losses	24,518	10,929	$ 10,776	$ 9,225
Loans Individually Evaluated for Impairment	15,898	20,732
Loans Individually Evaluated for Purchased Credit-Impairment	9,155	10,420
Loans Collectively Evaluated for Impairment	1,824,119	1,497,814
Total Loans Before Unearned Income	1,849,172	1,528,966
Unearned income	(5,037)	(3,476)
Loans, net of unearned income	1,844,135	1,525,490
Financing receivable recorded investment not accruing interest	15,600	14,400	8,700
Financing receivable, recorded investment, 90 days past due and still accruing	13,091	2,639	100
Financing receivable average recorded investment nonaccrual status	19,800	12,000	8,900
Real Estate
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	2,546	1,913
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	17,497	5,902
Total Allowance for Credit Losses	20,043	7,815	7,622	5,516
Loans Individually Evaluated for Impairment	11,823	13,721
Loans Individually Evaluated for Purchased Credit-Impairment	7,795	9,222
Loans Collectively Evaluated for Impairment	1,299,408	1,102,189
Total Loans Before Unearned Income	1,319,026	1,125,132
Financing receivable, recorded investment, 90 days past due and still accruing	11,045	2,574
Real Estate | Construction & land development
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	0	0
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	1,029	423
Total Allowance for Credit Losses	1,029	423	581	628
Loans Individually Evaluated for Impairment	0	0
Loans Individually Evaluated for Purchased Credit-Impairment	397	526
Loans Collectively Evaluated for Impairment	150,444	171,721
Total Loans Before Unearned Income	150,841	172,247
Financing receivable, recorded investment, 90 days past due and still accruing	1,000	48
Real Estate | Farmland
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	0	0
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	462	50
Total Allowance for Credit Losses	462	50	41	5
Loans Individually Evaluated for Impairment	543	543
Loans Individually Evaluated for Purchased Credit-Impairment	0	0
Loans Collectively Evaluated for Impairment	26,337	22,198
Total Loans Before Unearned Income	26,880	22,741
Financing receivable, recorded investment, 90 days past due and still accruing	0	0
Real Estate | 1- 4 Family
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	266	34
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	2,244	993
Total Allowance for Credit Losses	2,510	1,027	911	1,078
Loans Individually Evaluated for Impairment	1,480	1,058
Loans Individually Evaluated for Purchased Credit-Impairment	4,102	6,402
Loans Collectively Evaluated for Impairment	265,654	282,175
Total Loans Before Unearned Income	271,236	289,635
Financing receivable, recorded investment, 90 days past due and still accruing	4,980	923
Real Estate | Multifamily
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	0	0
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	978	1,038
Total Allowance for Credit Losses	978	1,038	1,318	994
Loans Individually Evaluated for Impairment	0	0
Loans Individually Evaluated for Purchased Credit-Impairment	900	0
Loans Collectively Evaluated for Impairment	45,032	23,973
Total Loans Before Unearned Income	45,932	23,973
Financing receivable, recorded investment, 90 days past due and still accruing	366	0
Real Estate | Non-farm non-residential
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	2,280	1,879
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	12,784	3,398
Total Allowance for Credit Losses	15,064	5,277	4,771	2,811
Loans Individually Evaluated for Impairment	9,800	12,120
Loans Individually Evaluated for Purchased Credit-Impairment	2,396	2,294
Loans Collectively Evaluated for Impairment	811,941	602,122
Total Loans Before Unearned Income	824,137	616,536
Financing receivable, recorded investment, 90 days past due and still accruing	4,699	1,603
Non-Real Estate
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	97	111
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	4,378	3,003
Total Allowance for Credit Losses	4,475	3,114	3,154	3,709
Loans Individually Evaluated for Impairment	4,075	7,011
Loans Individually Evaluated for Purchased Credit-Impairment	1,360	1,198
Loans Collectively Evaluated for Impairment	524,711	395,625
Total Loans Before Unearned Income	530,146	403,834
Financing receivable, recorded investment, 90 days past due and still accruing	2,046	65
Non-Real Estate | Agricultural
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	0	0
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	181	95
Total Allowance for Credit Losses	181	95	339	187
Loans Individually Evaluated for Impairment	2,531	4,030
Loans Individually Evaluated for Purchased Credit-Impairment	343	0
Loans Collectively Evaluated for Impairment	25,461	22,680
Total Loans Before Unearned Income	28,335	26,710
Financing receivable, recorded investment, 90 days past due and still accruing	67	0
Non-Real Estate | Commercial and industrial
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	97	111
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	2,705	1,798
Total Allowance for Credit Losses	2,802	1,909	1,909	2,377
Loans Individually Evaluated for Impairment	1,544	2,981
Loans Individually Evaluated for Purchased Credit-Impairment	1,017	1,198
Loans Collectively Evaluated for Impairment	350,467	264,077
Total Loans Before Unearned Income	353,028	268,256
Financing receivable, recorded investment, 90 days past due and still accruing	1,856	15
Non-Real Estate | Consumer and other
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	0	0
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	1,490	1,110
Total Allowance for Credit Losses	1,490	1,110	891	1,125
Loans Individually Evaluated for Impairment	0	0
Loans Individually Evaluated for Purchased Credit-Impairment	0	0
Loans Collectively Evaluated for Impairment	148,783	108,868
Total Loans Before Unearned Income	148,783	108,868
Financing receivable, recorded investment, 90 days past due and still accruing	123	50
Non-Real Estate | Unallocated
Summary of allowance and loans individually and collectively evaluated for impairment [Abstract]
Allowance Individually Evaluated for Impairment	0	0
Allowance Individually Evaluated for Purchased Credit-Impairment	0	0
Allowance Collectively Evaluated for Impairment	2	0
Total Allowance for Credit Losses	2	0	$ 15	$ 20
Loans Individually Evaluated for Impairment	0	0
Loans Individually Evaluated for Purchased Credit-Impairment	0	0
Loans Collectively Evaluated for Impairment	0	0
Total Loans Before Unearned Income	$ 0	$ 0

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Loans by Class (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Impaired Loans with no related allowance:
Recorded Investment	$ 5,413	$ 15,383
Unpaid Principal Balance	5,575	15,548
Average Recorded Investment	5,703	16,853
Interest Income Recognized	128	793
Interest Income Cash Basis	119	777
Impaired Loans with an allowance recorded:
Recorded Investment	10,485	5,349
Unpaid Principal Balance	10,531	5,698
Related Allowance	2,643	2,024
Average Recorded Investment	9,500	5,695
Interest Income Recognized	144	275
Interest Income Cash Basis	142	289
Total Impaired Loans
Related Allowance	2,643	2,024
Recorded Investment	15,898	20,732
Unpaid Principal Balance	16,106	21,246
Average Recorded Investment	15,203	22,548
Interest Income Recognized	272	1,068
Interest Income Cash Basis	261	1,066
Real Estate
Impaired Loans with no related allowance:
Recorded Investment	2,281	9,391
Unpaid Principal Balance	2,313	9,400
Average Recorded Investment	2,288	11,034
Interest Income Recognized	80	700
Interest Income Cash Basis	72	710
Impaired Loans with an allowance recorded:
Recorded Investment	9,542	4,330
Unpaid Principal Balance	9,588	4,679
Related Allowance	2,546	1,913
Average Recorded Investment	8,519	4,656
Interest Income Recognized	65	194
Interest Income Cash Basis	85	212
Total Impaired Loans
Related Allowance	2,546	1,913
Real Estate | Construction & land development
Impaired Loans with no related allowance:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Impaired Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Total Impaired Loans
Related Allowance	0	0
Real Estate | Farmland
Impaired Loans with no related allowance:
Recorded Investment	543	543
Unpaid Principal Balance	552	552
Average Recorded Investment	543	550
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Impaired Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Total Impaired Loans
Related Allowance	0	0
Real Estate | 1- 4 Family
Impaired Loans with no related allowance:
Recorded Investment	511	541
Unpaid Principal Balance	534	541
Average Recorded Investment	527	544
Interest Income Recognized	0	27
Interest Income Cash Basis	0	22
Impaired Loans with an allowance recorded:
Recorded Investment	969	517
Unpaid Principal Balance	969	517
Related Allowance	266	34
Average Recorded Investment	969	522
Interest Income Recognized	5	0
Interest Income Cash Basis	5	0
Total Impaired Loans
Related Allowance	266	34
Real Estate | Multifamily
Impaired Loans with no related allowance:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Impaired Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Total Impaired Loans
Related Allowance	0	0
Real Estate | Non-farm non-residential
Impaired Loans with no related allowance:
Recorded Investment	1,227	8,307
Unpaid Principal Balance	1,227	8,307
Average Recorded Investment	1,218	9,940
Interest Income Recognized	80	673
Interest Income Cash Basis	72	688
Impaired Loans with an allowance recorded:
Recorded Investment	8,573	3,813
Unpaid Principal Balance	8,619	4,162
Related Allowance	2,280	1,879
Average Recorded Investment	7,550	4,134
Interest Income Recognized	60	194
Interest Income Cash Basis	80	212
Total Impaired Loans
Related Allowance	2,280	1,879
Non-Real Estate
Impaired Loans with no related allowance:
Recorded Investment	3,132	5,992
Unpaid Principal Balance	3,262	6,148
Average Recorded Investment	3,415	5,819
Interest Income Recognized	48	93
Interest Income Cash Basis	47	67
Impaired Loans with an allowance recorded:
Recorded Investment	943	1,019
Unpaid Principal Balance	943	1,019
Related Allowance	97	111
Average Recorded Investment	981	1,039
Interest Income Recognized	79	81
Interest Income Cash Basis	57	77
Total Impaired Loans
Related Allowance	97	111
Non-Real Estate | Agricultural
Impaired Loans with no related allowance:
Recorded Investment	2,531	4,030
Unpaid Principal Balance	2,661	4,186
Average Recorded Investment	2,594	4,031
Interest Income Recognized	0	12
Interest Income Cash Basis	0	0
Impaired Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Total Impaired Loans
Related Allowance	0	0
Non-Real Estate | Commercial and industrial
Impaired Loans with no related allowance:
Recorded Investment	601	1,962
Unpaid Principal Balance	601	1,962
Average Recorded Investment	821	1,788
Interest Income Recognized	48	81
Interest Income Cash Basis	47	67
Impaired Loans with an allowance recorded:
Recorded Investment	943	1,019
Unpaid Principal Balance	943	1,019
Related Allowance	97	111
Average Recorded Investment	981	1,039
Interest Income Recognized	79	81
Interest Income Cash Basis	57	77
Total Impaired Loans
Related Allowance	97	111
Non-Real Estate | Consumer and other
Impaired Loans with no related allowance:
Recorded Investment	0
Unpaid Principal Balance	0
Average Recorded Investment	0
Interest Income Recognized	0
Interest Income Cash Basis	0
Impaired Loans with an allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Cash Basis	0	0
Total Impaired Loans
Related Allowance	$ 0	$ 0

Allowance for Loan Losses - Age

Allowance for Loan Losses - Age Analysis of TDRs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)contractloan	Dec. 31, 2019USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of troubled debt restructurings | contract	1	1
Total TDRs	$ 3,591	$ 0
Outstanding TDR | loan	1
Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 3,591	0
Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	3,591	0
Real Estate | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	3,591	0
Real Estate | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Construction & land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Construction & land development | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Construction & land development | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Construction & land development | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Farmland
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Farmland | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Farmland | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Farmland | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | 1- 4 Family
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | 1- 4 Family | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | 1- 4 Family | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | 1- 4 Family | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Multifamily
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Multifamily | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Multifamily | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Multifamily | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Non-farm non-residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	3,591	0
Real Estate | Non-farm non-residential | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	3,591	0
Real Estate | Non-farm non-residential | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Real Estate | Non-farm non-residential | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Agricultural | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Agricultural | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Agricultural | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Commercial and industrial | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Commercial and industrial | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Commercial and industrial | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Consumer and other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Consumer and other | Nonaccrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Consumer and other | Accruing Loans, Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	0	0
Non-Real Estate | Consumer and other | Accruing Loans, 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 0	$ 0

Allowance for Loan Losses - TDR

Allowance for Loan Losses - TDR Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
TDR activity [Roll Forward]
Beginning balance	$ 0
New TDRs	3,613
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	(22)
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	3,591
Real Estate
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	3,613
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	(22)
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	3,591
Real Estate | Construction & land development
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Real Estate | Farmland
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Real Estate | 1- 4 Family
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Real Estate | Multifamily
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Real Estate | Non-farm non-residential
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	3,613
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	(22)
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	3,591
Non-Real Estate
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Non-Real Estate | Agricultural
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Non-Real Estate | Commercial and industrial
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	0
Non-Real Estate | Consumer and other
TDR activity [Roll Forward]
Beginning balance	0
New TDRs	0
Charge-offs post-modification	0
Transferred to ORE	0
Paydowns	0
Construction to permanent financing	0
Restructured to market terms	0
Other adjustments	0
Ending balance	$ 0

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Acquired value	$ 98,159	$ 92,505
Less: accumulated depreciation	38,267	36,041
Net book value	59,892	56,464
Depreciation expense	2,800	2,300	$ 2,100
Capitalized contract cost	55	91	$ 54
Land
Property, Plant and Equipment [Line Items]
Acquired value	15,180	15,180
Bank premises
Property, Plant and Equipment [Line Items]
Acquired value	40,906	40,536
Furniture and equipment
Property, Plant and Equipment [Line Items]
Acquired value	28,511	27,255
Construction in progress
Property, Plant and Equipment [Line Items]
Acquired value	$ 13,562	$ 9,534

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Impairment charges recognized on the Company's intangible assets	$ 0
Goodwill	12,900,000	$ 12,942,000
Amortization expense	$ 700,000	$ 400,000	$ 500,000
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization	10 years

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Summary of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 18,092	$ 17,824
Accumulated Amortization	11,505	10,658
Net Carrying Amount	6,587	7,166
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,266	16,266
Accumulated Amortization	10,451	9,739
Net Carrying Amount	5,815	6,527
Loan servicing assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,826	1,558
Accumulated Amortization	1,054	919
Net Carrying Amount	$ 772	$ 639

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Amortization Expense Related to Purchase Accounting Intangibles (Details) $ in Thousands	Dec. 31, 2020USD ($)
Estimated Amortization Expense
December 31, 2021	$ 644
December 31, 2022	576
December 31, 2023	576
December 31, 2024	576
December 31, 2025	$ 576

Other Real Estate (Details)

Other Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Real Estate Owned Acquired by Foreclosure:
Total Other Real Estate Owned and Foreclosed Property	$ 2,645	$ 4,879
Allowance for Other Real Estate Owned losses	(405)	0
Net Other Real Estate Owned and Foreclosed Property	2,240	4,879
Residential
Real Estate Owned Acquired by Foreclosure:
Total Other Real Estate Owned and Foreclosed Property	131	559
Construction & land development
Real Estate Owned Acquired by Foreclosure:
Total Other Real Estate Owned and Foreclosed Property	311	669
Non-farm non-residential
Real Estate Owned Acquired by Foreclosure:
Total Other Real Estate Owned and Foreclosed Property	$ 2,203	$ 3,651

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Maturities of time deposits
2021	$ 355,093
2022	125,678
2023	108,380
2024	113,745
2025 and thereafter	22,733
Total	725,629	$ 756,027
Brokered deposits	3,400
Aggregate amount of time deposits in denominations of $250,000 or more	$ 248,800	$ 290,300

Borrowings - Short-term Borrowi

Borrowings - Short-term Borrowings (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Short-term borrowings [Abstract]
Federal Home Loan Bank advances	$ 50,000,000	$ 13,079,000
Repurchase agreements	6,121,000	6,840,000
Line of credit	0	0
Total short-term borrowings	56,121,000	19,919,000	$ 0
Line of credit facility, maximum borrowing capacity	6,500,000
Available lines of credit including FHLB	297,200,000	278,800,000
Schedule of certain information short-term borrowings [Abstract]
Outstanding at year end	56,121,000	19,919,000	0
Maximum month-end outstanding	57,048,000	19,919,000	37,000,000
Average daily outstanding	$ 48,277,000	$ 3,320,000	$ 7,119,000
Weighted average rate during the year	0.95%	2.00%	2.21%
Weighted average rate at year end	0.89%	2.00%	0.00%

Borrowings - Long-term Debt (De

Borrowings - Long-term Debt (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term federal home loan bank advance	$ 3,366,000	$ 3,533,000
Long-term debt outstanding	$ 60,500,000
Prime Rate | Fixed Interest Rate Period
Debt Instrument [Line Items]
Fixed interest rate	2.12%
Long-term federal home loan bank advance	$ 3,400,000	3,500,000
Senior Long-term Debt
Debt Instrument [Line Items]
Long-term debt outstanding	$ 42,366,000
Percentage of interest used in secured pledge borrowings	85.00%
Number of shares used in secured pledge borrowings (in shares)	4,823,899
Senior Long-term Debt | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.70%
Interest rate	(3.00%)
Long-term debt outstanding	$ 28,400,000	$ 31,700,000
Periodic principal payment	$ 812,500
Senior Long-term Debt | Floating 3-Month LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.25%	2.50%
Interest rate	(3.00%)	(4.61%)
Long-term debt outstanding	$ 14,000,000	$ 16,900,000
Periodic principal payment	697,715
Junior Subordinated Debt
Debt Instrument [Line Items]
Long-term debt outstanding	$ 14,777,000
Junior Subordinated Debt | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.75%
Interest rate	(4.00%)
Long-term debt outstanding	$ 14,800,000	$ 14,700,000
Revolving Credit Facility
Debt Instrument [Line Items]
Percentage of interest used in secured pledge borrowings	13.20%
Number of shares used in secured pledge borrowings (in shares)	735,745

Borrowings - Line of Credit and

Borrowings - Line of Credit and Letters of Credit (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 6.5
Line of credit facility, remaining borrowing capacity	297.2	$ 278.8
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	6.5
Line of credit facility, remaining borrowing capacity	$ 6.5
Line of credit facility, interest rate	4.25%
Long-term Advances from FHLB | Letters of Credit
Line of Credit Facility [Line Items]
Letters of credit amount at FHLB	$ 365.8	$ 355.2

Borrowings - Obligations on Lon

Borrowings - Obligations on Long-term Debt (Details) $ in Thousands	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Total	$ 60,500
Long-term Advances from FHLB
Debt Instrument [Line Items]
2021	0
2022	0
2023	0
2024	0
2025	0
2026 and thereafter	3,366
Subtotal	3,366
Debt issuance costs	0
Total	3,366
Senior Long-term Debt
Debt Instrument [Line Items]
2021	4,531
2022	6,041
2023	6,041
2024	22,291
2025	3,504
2026 and thereafter	0
Subtotal	42,408
Debt issuance costs	(42)
Total	42,366
Junior Subordinated Debentures
Debt Instrument [Line Items]
2021	0
2022	0
2023	0
2024	0
2025	15,000
2026 and thereafter	0
Subtotal	15,000
Debt issuance costs	(223)
Total	$ 14,777

Capital Requirements (Details)

Capital Requirements (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020USD ($)	Jun. 30, 2020	Dec. 31, 2019USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer minimum		0.025
Banking regulation, community bank leverage ratio	9.00%	9.00%
Banking regulation, increase community bank leverage ratio		8.50%
Tier 1 Leverage Capital, Amount
Actual		$ 10,000,000
Tier 1 Leverage Capital, Ratio
Actual			0.08
First Guaranty Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer		0.0422
Total Risk-based Capital, Amount
Actual		$ 233,391		$ 213,962
Minimum Capital Requirements		152,805		135,697
Minimum to be Well Capitalized Under Action Provisions		$ 191,006		$ 169,621
Total Risk-based Capital, Ratio
Actual		0.1222		0.1261
Minimum Capital Requirements		0.0800		0.0800
Minimum to be Well Capitalized Under Action Provisions		0.1000		0.1000
Tier 1 Capital, Amount
Actual		$ 209,507		$ 203,034
Minimum Capital Requirements		114,604		101,773
Minimum to be Well Capitalized Under Action Provisions		$ 152,805		$ 135,697
Tier 1 Capital, Ratio
Actual		0.1097		0.1196
Minimum Capital Requirements		0.0600		0.0600
Minimum to be Well Capitalized Under Action Provisions		0.0800		0.0800
Tier 1 Leverage Capital, Amount
Actual		$ 209,507		$ 203,034
Minimum Capital Requirements		97,683		77,771
Minimum to be Well Capitalized Under Action Provisions		$ 122,104		$ 97,214
Tier 1 Leverage Capital, Ratio
Actual		0.0858		0.1044
Minimum Capital Requirements		0.0400		0.0400
Minimum to be Well Capitalized Under Action Provisions		0.0500		0.0500
Common Equity Tier One Capital, Amount
Actual		$ 209,507		$ 203,034
Minimum Capital Requirements		85,953		76,329
Minimum to be Well Capitalized Under Action Provisions		$ 124,154		$ 110,254
Common Equity Tier One Capital, Ratio
Actual		0.1097		0.1196
Minimum Capital Requirements		4.50%		4.50%
Minimum to be Well Capitalized Under Action Provisions		6.50%		6.50%

Dividend Restrictions (Details)

Dividend Restrictions (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Percentage of outstanding capital stock, maximum	50.00%
Undistributed earnings, basic	$ 5.7
Equity restrictions	$ 223.1

Related Party Transactions - Ac

Related Party Transactions - Activity of Loans Borrowers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance, beginning of year	$ 61,820	$ 63,907
Net (Decrease) Increase	17,579	(2,087)
Balance, end of year	$ 79,399	$ 61,820

Related Party Transactions - Na

Related Party Transactions - Narrative (Details) - USD ($) $ in Thousands	Dec. 21, 2015	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Unfunded commitments		$ 79,399	$ 61,820	$ 63,907
Centurion Insurance
Related Party Transaction [Line Items]
Equity method investment, ownership percentage		40.00%
Directors and Executive Officers
Related Party Transaction [Line Items]
Deposit from related party		$ 50,300
Directors and Executive Officers | Unfunded Loan Commitment
Related Party Transaction [Line Items]
Unfunded commitments		40,800	21,600
Affiliated Entity | Champion Industries, Inc.
Related Party Transaction [Line Items]
Expenses from transactions with related party		500	500	300
Affiliated Entity | Hood Automotive Group
Related Party Transaction [Line Items]
Expenses from transactions with related party		27	100	200
Affiliated Entity | Gasaway Gasaway Bankston
Related Party Transaction [Line Items]
Expenses from transactions with related party		$ 100	69	700
Director | Subordinated Debt
Related Party Transaction [Line Items]
Debt instrument, face amount	$ 15,000
Debt instrument, term		10 years
Interest amount		$ 600	600	600
Director | Subordinated Debt | Fixed Interest Rate Period
Related Party Transaction [Line Items]
Debt instrument, non-callable term		5 years
Debt instrument, interest rate	4.00%
Director | Subordinated Debt | Floating Interest Rate Period
Related Party Transaction [Line Items]
Debt instrument, term		5 years
Director | Subordinated Debt | Floating Interest Rate Period | Prime Rate
Related Party Transaction [Line Items]
Debt instrument, basis spread on variable rate	0.75%
Equity Method Investee | Centurion Insurance
Related Party Transaction [Line Items]
Expenses from transactions with related party		$ 500	$ 300	$ 200

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement [Abstract]
Deferment percentage of base salary, minimum	1.00%
Deferment percentage of base salary, maximum	20.00%
Employer matching contribution	6.00%
Maximum employer matching contribution percentage	100.00%
Contributions to savings plan	$ 173,000	$ 149,000	$ 292,000
Contributions made to ESOP	$ 0	$ 0	$ 0
Shares held under ESOP (in shares)	2,770

Other Expenses (Details)

Other Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other noninterest expense:
Legal and professional fees	$ 2,919	$ 2,648	$ 2,362
Data processing	2,465	1,972	1,692
ATM Fees	1,332	1,217	1,214
Marketing and public relations	1,046	1,456	1,329
Taxes - sales, capital and franchise	1,251	1,094	1,066
Operating supplies	921	674	562
Software expense and amortization	2,354	1,308	1,119
Travel and lodging	726	908	978
Telephone	256	193	208
Amortization of core deposits	712	390	545
Donations	393	603	380
Net costs from other real estate and repossessions	1,653	422	186
Regulatory assessment	1,716	683	941
Other	2,980	2,536	2,204
Total other noninterest expense	20,724	16,104	14,786
Advertising expense	$ 400	$ 800	$ 900

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current	$ 8,964	$ 3,770	$ 3,929
Deferred	(3,745)	(114)	(467)
Total	$ 5,219	$ 3,656	$ 3,462

Income Taxes - Statutory Federa

Income Taxes - Statutory Federal Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory tax rate	21.00%	21.00%	21.00%
Federal income taxes at statutory rate	$ 5,363	$ 3,758	$ 3,712
Tax exempt municipal income	(124)	(140)	(166)
Other	(20)	38	(84)
Total	$ 5,219	$ 3,656	$ 3,462

Income Taxes - Components of De

Income Taxes - Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Allowance for loan losses	$ 4,748	$ 1,720
Other real estate owned	239	257
Unrealized losses on available for sale securities	0	0
Net operating loss	1,190	1,282
Other	581	508
Gross deferred tax assets	6,758	3,767
Deferred tax liabilities:
Depreciation and amortization	(1,952)	(2,010)
Core deposit intangibles	(1,214)	(1,359)
Unrealized gains on available for sale securities	(172)	(578)
Discount on purchased loans	(161)	(267)
Other	(625)	(670)
Gross deferred tax liabilities	(4,124)	(4,884)
Net deferred tax assets (liabilities)	$ 2,634
Net deferred tax assets (liabilities)		$ (1,117)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 5,700,000	$ 6,100,000
Interest on income taxes expense	0	0	$ 0
Income tax penalties expense	0	0	0
Income Tax Examination, Penalties Accrued	0	0	0
Interest on income taxes accrued	$ 0	$ 0	$ 0

Commitments and Contingencies_2

Commitments and Contingencies (Details)	12 Months Ended
	Dec. 31, 2020USD ($)facility	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Extension period of majority of short-term borrowing	1 year
Maximum extension period of short-term borrowing	3 years
Losses incurred on off-balance sheet commitments	$ 0	$ 0	$ 0
Acquired value	98,159,000	92,505,000
Commitments to Extend Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Notional value	154,047,000	117,826,000
Unfunded Commitments under lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Notional value	169,151,000	148,127,000
Commercial and Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Notional value	11,728,000	11,258,000
Construction Commitment
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Notional value	$ 11,400,000
Number of facilities under construction | facility	1
Construction in progress
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Acquired value	$ 13,562,000	$ 9,534,000
Construction in progress | Construction Commitment
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Acquired value	$ 11,100,000

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale, at fair value	$ 238,548	$ 339,937
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale, at fair value	238,548	339,937
Level 1: Quoted Prices in Active Markets For Identical Assets | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale, at fair value	3,000	0
Level 2: Significant Other Observable Inputs | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale, at fair value	209,359	330,539
Level 3: Significant Unobservable Inputs | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale, at fair value	$ 26,189	$ 9,398

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale, at fair value	$ 238,548	$ 339,937
Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale, at fair value	36,489	95,369
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale, at fair value	238,548	339,937
Fair Value, Measurements, Recurring | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfer out of level 3 securities	6,800
Fair Value, Measurements, Recurring | Municipal Debt Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfer out of level 3 securities	1,400
Level 1: Quoted Prices in Active Markets For Identical Assets | Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale, at fair value	$ 3,000	$ 0

Fair Value Measurements - Unobs

Fair Value Measurements - Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of year	$ 9,398	$ 4,761
Total gains or losses (realized/unrealized):
Included in earnings	0	0
Included in other comprehensive income	256	146
Purchases, sales, issuances and settlements, net	5,361	4,491
Transfers in and/or out of Level 3	11,174	0
Balance as of end of year	$ 26,189	$ 9,398

Fair Value Measurements - Nonre

Fair Value Measurements - Nonrecurring (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans measured at fair value	$ 7,842	$ 4,046
Other real estate owned measured at fair value	2,240	4,879
Level 1: Quoted Prices in Active Markets For Identical Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans measured at fair value	0	0
Other real estate owned measured at fair value	0	0
Level 2: Significant Other Observable Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans measured at fair value	0	0
Other real estate owned measured at fair value	363	4,158
Level 3: Significant Unobservable Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans measured at fair value	7,842	4,046
Other real estate owned measured at fair value	$ 1,877	$ 721

Financial Instruments (Details)

Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Securities, available for sale	$ 238,548	$ 339,937
Carrying Amount
Assets
Federal funds sold	702	914
Securities, available for sale	238,548	339,937
Loans held for sale	0	86,579
Loans, net	1,819,617	1,514,561
Cash surrender value of BOLI	5,427	5,288
Accrued interest receivable	11,933	8,412
Liabilities
Deposits	2,166,318	1,853,013
Short-term advances from Federal Home Loan Bank	50,000	13,079
Repurchase agreements	6,121	6,840
Accrued interest payable	5,292	6,047
Long-term advances from Federal Home Loan Bank	3,366	3,533
Senior long-term debt	42,366	48,558
Junior subordinated debentures	14,777	14,737
Carrying Amount | Cash and due from banks
Assets
Cash and due from banks	298,903	66,511
Fair Value Measurements
Assets
Federal funds sold	702	914
Securities, available for sale	238,548	339,937
Loans held for sale	0	86,817
Loans, net	1,846,738	1,515,277
Cash surrender value of BOLI	5,427	5,288
Accrued interest receivable	11,933	8,412
Liabilities
Deposits	2,179,004	1,863,179
Short-term advances from Federal Home Loan Bank	50,000	13,079
Repurchase agreements	6,154	6,840
Accrued interest payable	5,292	6,047
Long-term advances from Federal Home Loan Bank	3,366	3,533
Senior long-term debt	42,408	48,599
Junior subordinated debentures	14,452	14,762
Fair Value Measurements | Level 1
Assets
Federal funds sold	702	914
Securities, available for sale	3,000	0
Loans held for sale	0	0
Loans, net	0	0
Cash surrender value of BOLI	0	0
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Short-term advances from Federal Home Loan Bank	0	0
Repurchase agreements	0	0
Accrued interest payable	0	0
Long-term advances from Federal Home Loan Bank	0	0
Senior long-term debt	0	0
Junior subordinated debentures	0	0
Fair Value Measurements | Level 2
Assets
Federal funds sold	0	0
Securities, available for sale	209,359	330,539
Loans held for sale	0	86,817
Loans, net	0	0
Cash surrender value of BOLI	0	0
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Short-term advances from Federal Home Loan Bank	0	0
Repurchase agreements	0	0
Accrued interest payable	0	0
Long-term advances from Federal Home Loan Bank	0	0
Senior long-term debt	0	0
Junior subordinated debentures	0	0
Fair Value Measurements | Level 3
Assets
Federal funds sold	0	0
Securities, available for sale	26,189	9,398
Loans held for sale	0	0
Loans, net	1,846,738	1,515,277
Cash surrender value of BOLI	5,427	5,288
Accrued interest receivable	11,933	8,412
Liabilities
Deposits	2,179,004	1,863,179
Short-term advances from Federal Home Loan Bank	50,000	13,079
Repurchase agreements	6,154	6,840
Accrued interest payable	5,292	6,047
Long-term advances from Federal Home Loan Bank	3,366	3,533
Senior long-term debt	42,408	48,599
Junior subordinated debentures	14,452	14,762
Fair Value Measurements | Cash and due from banks
Assets
Cash and due from banks	298,903	66,511
Fair Value Measurements | Cash and due from banks | Level 1
Assets
Cash and due from banks	298,903	66,511
Fair Value Measurements | Cash and due from banks | Level 2
Assets
Cash and due from banks	0	0
Fair Value Measurements | Cash and due from banks | Level 3
Assets
Cash and due from banks	$ 0	$ 0

Concentrations of Credit and _2

Concentrations of Credit and Other Risks (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)deposit
Risks and Uncertainties [Abstract]
Percentage of entity deposits	33.00%
Number of deposits of depositing authorities | deposit	1
Public fund deposits | $	$ 715.3

Litigation (Details)

Litigation (Details) $ in Millions	Dec. 31, 2020USD ($)
Overpayment Of Interest On A Loan
Loss Contingencies [Line Items]
Accrued liability	$ 0.1
Overpayment Of Interest On A Loan | Minimum
Loss Contingencies [Line Items]
Lawsuit alleging fault for a loss of funds with possible loss	0
Overpayment Of Interest On A Loan | Maximum
Loss Contingencies [Line Items]
Lawsuit alleging fault for a loss of funds with possible loss	0.5
Loss Of Funds By Customer | Minimum
Loss Contingencies [Line Items]
Lawsuit alleging fault for a loss of funds with possible loss	0
Loss Of Funds By Customer | Maximum
Loss Contingencies [Line Items]
Lawsuit alleging fault for a loss of funds with possible loss	$ 1.5

Condensed Parent Company Info_3

Condensed Parent Company Information - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Other assets	$ 18,405	$ 15,543
Total Assets	2,473,078	2,117,216
Liabilities and Shareholders' Equity
Senior long-term debt	42,366	48,558
Junior subordinated debentures	14,777	14,737
Other liabilities	6,247	5,374
Total Liabilities	2,294,487	1,951,181
Shareholders' Equity	178,591	166,035	$ 147,284	$ 143,983
Total Liabilities and Shareholders' Equity	2,473,078	2,117,216
Parent Company
Assets
Cash	1,796	633
Investment in bank subsidiary	228,869	224,677
Other assets	5,665	4,427
Total Assets	236,330	229,737
Liabilities and Shareholders' Equity
Senior long-term debt	42,366	48,558
Junior subordinated debentures	14,777	14,738
Other liabilities	596	406
Total Liabilities	57,739	63,702
Shareholders' Equity	178,591	166,035
Total Liabilities and Shareholders' Equity	$ 236,330	$ 229,737

Condensed Parent Company Info_4

Condensed Parent Company Information - Condensed Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Expenses
Interest expense	$ 26,017	$ 29,966	$ 21,366
Salaries & Benefits	29,600	25,019	22,888
Income before income tax benefit and increase in equity in undistributed earnings of subsidiary	25,537	17,897	17,675
Income tax benefit	(5,219)	(3,656)	(3,462)
Net Income	20,318	14,241	14,213
Parent Company
Operating Income
Dividends received from bank subsidiary	17,100	13,982	11,788
Net gains on sale of equity securities	0	196	0
Other income	332	424	289
Total operating income	17,432	14,602	12,077
Operating Expenses
Interest expense	2,197	1,795	1,675
Salaries & Benefits	132	208	133
Other expenses	1,225	953	916
Total operating expenses	3,554	2,956	2,724
Income before income tax benefit and increase in equity in undistributed earnings of subsidiary	13,878	11,646	9,353
Income tax benefit	720	494	540
Income before increase in equity in undistributed earnings of subsidiary	14,598	12,140	9,893
Increase in equity in undistributed earnings of subsidiary	5,720	2,101	4,320
Net Income	$ 20,318	$ 14,241	$ 14,213

Condensed Parent Company Info_5

Condensed Parent Company Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 20,318	$ 14,241	$ 14,213
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,781	3,057	3,289
Gain on sale of securities	(14,791)	157	1,830
Net Cash Provided by Operating Activities	23,759	29,078	26,889
Cash flows from investing activities:
Proceeds from sales of equity securities	(1,078,450)	(274,437)	(309,346)
Net Cash (Used In) Provided By Investing Activities	(128,455)	(131,906)	6,789
Cash flows from financing activities:
Proceeds from long-term debt, net of costs	0	32,465	0
Repayment of long-term debt	(6,302)	(3,754)	(2,941)
Common stock issued in private placement	0	1,000	0
Dividends paid	(6,234)	(5,803)	(5,636)
Net Cash Provided By Financing Activities	336,876	42,288	56,259
Net Increase (Decrease) In Cash and Cash Equivalents	232,180	(60,540)	89,937
Cash and Cash Equivalents at the Beginning of the Period	67,425	127,965	38,028
Cash and Cash Equivalents at the End of the Period	299,605	67,425	127,965
Parent Company
Cash flows from operating activities:
Net income	20,318	14,241	14,213
Adjustments to reconcile net income to net cash provided by operating activities:
Increase in equity in undistributed earnings of subsidiary	(5,720)	(2,101)	(4,320)
Depreciation and amortization	92	80	43
Gain on sale of securities	0	(196)	0
Net change in other liabilities	189	(444)	136
Net change in other assets	(1,301)	(601)	1,360
Net Cash Provided by Operating Activities	13,578	10,979	11,432
Cash flows from investing activities:
Proceeds from sales of equity securities	10	1,196	0
Purchases of premises and equipment	0	(136)	0
Cash paid in acquisition	0	(43,383)	0
Net Cash (Used In) Provided By Investing Activities	10	(42,323)	0
Cash flows from financing activities:
Proceeds from long-term debt, net of costs	0	32,465	0
Repayment of long-term debt	(6,191)	(3,754)	(2,941)
Common stock issued in private placement	0	1,000	0
Dividends paid	(6,234)	(5,803)	(5,636)
Net Cash Provided By Financing Activities	(12,425)	23,908	(8,577)
Net Increase (Decrease) In Cash and Cash Equivalents	1,163	(7,436)	2,855
Cash and Cash Equivalents at the Beginning of the Period	633	8,069	5,214
Cash and Cash Equivalents at the End of the Period	$ 1,796	$ 633	$ 8,069