Hills Bancorporation (HBIA) 10-Q 4 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 30, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	0-12668
Entity Registrant Name	Hills Bancorporation
Entity Incorporation, State or Country Code	IA
Entity Tax Identification Number	42-1208067
Entity Address, Address Line One	131 MAIN STREET
Entity Address, City or Town	HILLS
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52235
City Area Code	319
Local Phone Number	679-2291
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Smaller Reporting Company	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		9,371,390
Entity Central Index Key	0000732417
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 268,293	$ 241,965
Investment securities available for sale at fair value (amortized cost March 31, 2020 $367,051; December 31, 2019 $351,069)	371,839	355,303
Stock of Federal Home Loan Bank	11,374	11,065
Loans held for sale	11,592	8,400
Loans, net of allowance for loan losses (March 31, 2020 $38,340; December 31, 2019 $33,760)	2,626,399	2,606,277
Property and equipment, net	36,767	37,146
Tax credit real estate investment	7,945	8,280
Accrued interest receivable	13,691	12,442
Deferred income taxes, net	9,091	8,018
Goodwill	2,500	2,500
Other assets	6,747	9,491
Total Assets	3,366,238	3,300,887
Liabilities
Noninterest-bearing deposits	381,171	387,612
Interest-bearing deposits	2,350,543	2,273,752
Total deposits	2,731,714	2,661,364
Federal Home Loan Bank borrowings	185,000	185,000
Accrued interest payable	2,352	2,474
Other liabilities	20,112	25,012
Total Liabilities	2,939,178	2,873,850
Redeemable Common Stock Held by Employee Stock Ownership Plan (ESOP)	50,249	51,826
STOCKHOLDERS' EQUITY
Common stock, no par value; authorized 20,000,000 shares; issued March 31, 2020 10,328,925 shares; December 31, 2019 10,327,656 shares	0	0
Paid in capital	59,733	55,943
Retained earnings	408,260	409,509
Accumulated other comprehensive income	1,006	1,415
Treasury stock at cost (March 31, 2020 953,569 shares; December 31, 2019 975,962 shares)	(41,939)	(39,830)
Total Stockholders' Equity	427,060	427,037
Less maximum cash obligation related to ESOP shares	50,249	51,826
Total Stockholders' Equity Less Maximum Cash Obligation Related to ESOP Shares	376,811	375,211
Total Liabilities & Stockholders' Equity	$ 3,366,238	$ 3,300,887

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
ASSETS
Amortized Cost	$ 367,051	$ 351,069
Loans, allowance for loan losses	$ 38,340	$ 33,760
STOCKHOLDERS' EQUITY
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	10,328,925	10,327,656
Treasury stock at cost (in shares)	953,569	975,962

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income:
Loans, including fees	$ 29,893	$ 29,573
Investment securities:
Taxable	884	758
Nontaxable	1,037	1,025
Federal funds sold	638	491
Total interest income	32,452	31,847
Interest expense:
Deposits	6,492	6,499
FHLB borrowings	1,370	1,575
Total interest expense	7,862	8,074
Net interest income	24,590	23,773
Provision for loan losses	4,649	(1,246)
Net interest income after provision for loan losses	19,941	25,019
Noninterest income:
Net gain on sale of loans	658	286
Other noninterest income	400	437
Gain on sale of investment securities	10	0
Noninterest income	6,167	5,250
Noninterest expenses:
Salaries and employee benefits	9,584	8,722
Occupancy	1,152	1,186
Furniture and equipment	1,781	1,673
Office supplies and postage	503	459
Advertising and business development	759	638
Outside services	2,685	2,572
FDIC insurance assessment	180	209
Other noninterest expense	583	590
Noninterest expenses	17,227	16,049
Income before income taxes	8,881	14,220
Income taxes	1,806	3,017
Net income	$ 7,075	$ 11,203
Earnings per share:
Basic (in dollars per share)	$ 0.75	$ 1.20
Diluted (in dollars per share)	$ 0.75	$ 1.20
Trust fees
Noninterest income:
Fee income	$ 2,570	$ 2,252
Service charges and fees
Noninterest income:
Fee income	$ 2,529	$ 2,275

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 7,075	$ 11,203
Securities:
Net change in unrealized income on securities available for sale	564	3,293
Reclassification adjustment for net gains realized in net income	(10)	0
Income taxes	(139)	(821)
Other comprehensive income on securities available for sale	415	2,472
Derivatives used in cash flow hedging relationships:
Net change in unrealized loss on derivatives	(1,098)	(298)
Income taxes	274	75
Other comprehensive loss on cash flow hedges	(824)	(223)
Other comprehensive (loss) income, net of tax	(409)	2,249
Comprehensive income	$ 6,666	$ 13,452

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Maximum Cash Obligation Related To ESOP Shares [Member]
Beginning Balance at Dec. 31, 2018	$ 334,882	$ 52,122	$ 371,848	$ (3,250)	$ (36,968)	$ (48,870)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 84,164 and 91,274 shares of common stock for 3 months ended March 31, 2019 and 2020, respectively	5,134	2,932			2,202
Issuance 1,929, and 1,712 shares of common stock under the employee stock purchase plan for 3 months ended March 31, 2019 and 2020, respectively	105	105
Unearned restricted stock compensation	170	170
Forfeiture of 703 and 443 shares of common stock for 3 months ended March 31, 2019 and 2020, respectively	(34)	(34)
Change related to ESOP shares	(981)					(981)
Net income	11,203		11,203
Cash dividends ($0.82 and $0.89 per share for 3 months ended March 31, 2019 and 2020, respectively)	(7,657)		(7,657)
Purchase of 69,771 and 68,881 shares of common stock for 3 months ended March 31, 2019 and 2020, respectively	(4,291)				(4,291)
Other comprehensive income	2,249			2,249
Ending Balance at Mar. 31, 2019	340,780	55,295	375,394	(1,001)	(39,057)	(49,851)
Beginning Balance at Dec. 31, 2019	375,211	55,943	409,509	1,415	(39,830)	(51,826)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 84,164 and 91,274 shares of common stock for 3 months ended March 31, 2019 and 2020, respectively	5,933	3,504			2,429
Issuance 1,929, and 1,712 shares of common stock under the employee stock purchase plan for 3 months ended March 31, 2019 and 2020, respectively	101	101
Unearned restricted stock compensation	202	202
Forfeiture of 703 and 443 shares of common stock for 3 months ended March 31, 2019 and 2020, respectively	(23)	(23)
Share-based compensation	6	6
Change related to ESOP shares	1,577					1,577
Net income	7,075		7,075
Cash dividends ($0.82 and $0.89 per share for 3 months ended March 31, 2019 and 2020, respectively)	(8,324)		(8,324)
Purchase of 69,771 and 68,881 shares of common stock for 3 months ended March 31, 2019 and 2020, respectively	(4,538)				(4,538)
Other comprehensive income	(409)			(409)
Ending Balance at Mar. 31, 2020	$ 376,811	$ 59,733	$ 408,260	$ 1,006	$ (41,939)	$ (50,249)

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Issuance of common stock (in shares)	91,274	84,164
Issuance of common stock purchased under the employee stock purchase plan (in shares)	1,712	1,929
Forfeiture of common stock (in shares)	443	703
Cash dividends (in dollars per share)	$ 0.89	$ 0.82
Purchase of common stock (in shares)	68,881	69,771

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Net income	$ 7,075	$ 11,203
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation	874	847
Provision for loan losses	4,649	(1,246)
Net gain on sale of investment securities available for sale	(10)	0
Forfeiture of common stock	(23)	(34)
Share-based compensation	6	0
Compensation expensed through issuance of common stock	89	108
Provision for deferred income taxes	(938)	454
Net gain on sale of other real estate owned and other repossessed assets	0	(11)
Increase in accrued interest receivable	(1,249)	(2,186)
Amortization of premium on investment securities, net	157	100
Decrease in other assets	2,649	426
Amortization of operating lease right-of-use assets	95	0
Decrease in accrued interest payable and other liabilities	(5,918)	(955)
Loans originated for sale	(55,609)	(29,847)
Proceeds on sales of loans	53,075	26,850
Net gain on sales of loans	(658)	(286)
Net cash and cash equivalents provided by operating activities	4,264	5,423
Cash Flows from Investing Activities
Proceeds from maturities of investment securities available for sale	9,076	10,251
Proceeds from sales of investment securities available for sale	313	0
Purchases of investment securities available for sale	(25,827)	(12,143)
Loans made to customers, net of collections	(24,771)	(15,208)
Proceeds on sale of other real estate owned and other repossessed assets	0	62
Purchases of property and equipment	(495)	(427)
Net changes from tax credit real estate investment	335	262
Net cash and cash equivalents used in investing activities	(41,369)	(17,203)
Cash Flows from Financing Activities
Net increase in deposits	70,350	175,768
Issuance of common stock, net of costs	5,844	5,026
Purchase of treasury stock	(4,538)	(4,291)
Proceeds from the issuance of common stock through the employee stock purchase plan	101	105
Dividends paid	(8,324)	(7,657)
Net cash and cash equivalents provided by financing activities	63,433	168,951
Increase in cash and cash equivalents	26,328	157,171
Cash and cash equivalents:
Beginning of period	241,965	43,305
End of period	268,293	200,476
Cash payments for:
Interest paid to depositors	6,614	6,260
Interest paid on other obligations	1,370	1,575
Noncash activities:
(Decrease)/increase in maximum cash obligation related to ESOP shares	(1,577)	981
Transfers to other real estate owned	0	51
Right-of-use assets obtained in exchange for operating lease obligations	$ 0	$ 3,581

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with instructions for Form 10-Q and Regulation S-X. These financial statements include all adjustments (consisting of normal recurring accruals) which in the opinion of management are considered necessary for the fair presentation of the financial position and results of operations for the periods shown. Certain prior year amounts have been reclassified to conform to the current year presentation. The Company considers that it operates as one business segment, a commercial bank. Operating results for the three month period ended March 31, 2020 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2020 . For further information, refer to the consolidated financial statements and footnotes thereto included in the Form 10-K Annual Report of Hills Bancorporation and subsidiary (the “Company”) for the year ended December 31, 2019 filed with the Securities Exchange Commission on March 6, 2020 . The consolidated balance sheet as of December 31, 2019 , has been derived from the audited consolidated financial statements for that period. The Company evaluated subsequent events through the filing date of its quarterly report on Form 10-Q with the SEC. Revenue Recognition Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers ("ASC 606"), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the Company’s contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit and investment securities as these activities are not subject to the requirements of ASC 606. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606 are the following: Service charges and fees on deposit accounts represent general service fees for monthly account maintenance and activity- or transaction-based fees and consist of transaction-based revenue which includes interchange income, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the Company’s performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Trust income represents monthly fees due from wealth management customers as consideration for managing the customers' assets. Wealth management and trust services include custody of assets, investment management, fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed each month, which is generally the time that payment is received. A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity's obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. As of March 31, 2020, the Company did not have any significant contract balances. An entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. The Company has not incurred or capitalized any contract acquisition costs as of March 31, 2020. Effect of New Financial Accounting Standards: In February 2016, the FASB issued ASU No. 2016-02 (Topic 842), Leases . The ASU provides guidance requiring lessees to recognize right-of-use (ROU) assets and lease liabilities for all leases other than those that meet the definition of short-term leases. For short-term leases, lessees may elect an accounting policy by class of underlying asset under which these assets and liabilities are not recognized and lease payments are generally recognized over the lease term on a straight-line basis. Under this new ASU, lessees will recognize right-of use assets and lease liabilities for most leases currently accounted for as operating leases under generally accepted accounting principles. For public companies, ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company adopted the ASU on January 1, 2019 and used the alternative transition approach which permits the effects of adoption to be applied at the effective date. Consequently, financial information will not be updated and the disclosures required under the new standard will not be provided for dates and periods before January 1, 2019. The new standard provides a number of optional practical expedients in transition. We elected the 'package of practical expedients', which permits us not to reassess under the new standard our prior conclusions about lease identification, lease classification and initial direct costs. We also elected the short-term lease exemption and combining the lease and nonlease components practical expedients. We did not elect the use-of-hindsight or the practical expedient pertaining to land easements; the latter not being applicable to us. The most significant impact upon adoption relates to the recognition of new ROU assets and lease liabilities on our balance sheet for our equipment and real estate operating leases. Upon adoption, we recognized additional operating liabilities of $3.58 million , with corresponding ROU assets of the same amount based on the present value of the remaining rental payments, including options to extend that are expected to be exercised, under current leasing standards for existing operating leases. There was no cumulative effect of adopting the standard. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments (CECL). The ASU changes the way entities recognize impairment of financial assets by requiring immediate recognition of estimated credit losses expected to occur over the remaining life of many financial assets. Under the CECL model, we will be required to present certain financial assets carried at amortized cost, such as loans held for investment and held-to-maturity debt securities, at the net amount expected to be collected. The measurement of expected credit losses is to be based on information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This measurement will take place at the time the financial asset is first added to the balance sheet and periodically thereafter. This differs significantly from the "incurred loss" model required under current GAAP, which delays recognition until it is probable a loss has been incurred. Accordingly, we expect that the adoption of the CECL model will materially affect how we determine our allowance for loan losses and could require us to significantly increase our allowance. For public companies, ASU 2016-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, early adoption is permitted for the fiscal year beginning after December 15, 2018. With the passage of the Coronavirus Aid, Relief, and Economic Security Act (CARES Act), the option to delay CECL was provided until the earlier of the national health emergency being declared over or December 31, 2020. The Company elected to delay implementing CECL and continued to use the incurred loss method to calculate the allowance for loan losses as of and for the period ending March 31, 2020. The Company has implemented a software solution provided by a third party vendor to assist in the determination of the CECL estimate. The CECL model has been finalized and we completed the validation process for the CECL model using an independent outside party in January 2020. Our current planned approach for estimating expected life-time credit losses for loans includes the following key components: • An initial forecast period of one year for all portfolio segments and off-balance-sheet credit exposures. This period reflects management’s expectation of losses based on forward-looking economic scenarios over that time. • A historical loss forecast period covering the remaining contractual life, adjusted for prepayments, by portfolio segment based on the change in key historical economic variables. • A reversion period of up to 3 years connecting the initial loss forecast to the historical loss forecast based on economic conditions at the measurement date. • We will primarily utilize discounted cash flow (DCF) methods to estimate credit losses by portfolio segment. The DCF methods obtain estimated life-time credit losses using the conceptual components described above. Upon adoption on January 1, 2020, we estimate an overall increase in our Allowance for Credit Losses (ACL) for loans of approximately $3 million to $4 million . We also anticipate an unfunded commitments liability of approximately $1.0 million to $2.0 million upon adoption. The future effects of CECL on our ACL will depend on the size and composition of our portfolio, the portfolio’s credit quality and economic conditions, as well as any refinements to our model, methodology and other key assumptions. We will recognize a one-time cumulative-effect adjustment to our allowance for loan losses upon adoption of the new standard. The increase in the ACL will result in a decrease to our regulatory capital amounts and ratios. Once finalized, we estimate the ACL as of March 31, 2020 to be approximately $41 million to $44 million and the unfunded commitments liability to be approximately $4 million to $5 million . In January 2017, the FASB issued ASU No. 2017-03, Accounting Changes and Error Corrections (Topic 250) and Investments - Equity Method and Joint Ventures (Topic 323), Amendments to SEC Paragraphs Pursuant to Staff Announcements at the September 22, 2016 and November 17, 2016 EITF Meetings. This ASU adds an SEC paragraph and amends other Topics pursuant to an SEC staff Announcement made at the September 22, 2016 Emerging Issues Task Force (EITF) meeting. The SEC paragraph applies to ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606); ASU No. 2016-02, Leases (Topic 842); and ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU provides that a company should evaluate ASUs that have not yet been adopted to determine the appropriate financial statement disclosures about the potential material effects of those ASUs on the financial statements when adopted. If the company does not know or cannot reasonably estimate the impact that adoption of the ASUs referenced in this announcement is expected to have on the financial statements, then in addition to making a statement to that effect, the company should consider additional qualitative financial statement disclosures to assist the reader in assessing the significance of the impact that the standard will have on the financial statements of the company when adopted. Additional qualitative disclosures should include a description of the effect of the accounting policies that the company expects to apply and a comparison to the company's current accounting policies. Also, the company should describe the status of its process to implement the new standards and the significant implementation matters yet to be addressed. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 250), Simplifying the Test for Goodwill Impairment. The ASU simplifies the goodwill impairment test by requiring a company to perform its annual or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized when the carrying amount exceeds fair value. For public companies, ASU 2017-04 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company adopted ASU No. 2017-04 for the period ending March 31, 2020. There was no material impact on the financial statements. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities. This ASU requires companies to change the recognition and presentation of the effects of hedge accounting by eliminating the requirement to separately measure and report hedge ineffectiveness and requiring companies to present all of the elements of hedge accounting that affect earnings in the same income statement line as the hedged item. Furthermore, the standard eases the requirements for effectiveness testing, hedge documentation and applying the critical terms match method and introduces new alternatives that will permit companies to reduce the risk of material error corrections if they misapply the shortcut method. For public companies, ASU 2017-12 is effective for fiscal years, and interim periods within those fiscal years beginning after December 15, 2018. The Company adopted ASU No. 2017-12 for the period ending March 31, 2019. There was no material impact on the financial statements. In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718), Improvements to Nonemployee Share-Based Payment Accounting . The amendments in this ASU expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. ASU 2018-07 is effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. The Company adopted ASU No. 2018-07 for the period ending March 31, 2019. There was no material impact on the financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820), Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement . The amendments in this ASU modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, including removal of the requirement to disclose the valuation processes for Level 3 fair value measurements and the additional requirement to disclose the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. ASU 2018-13 is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted upon issuance of this ASU. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. The Company adopted ASU 2018-13 for the period ending March 31, 2020. There was no material impact on the financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangements That Is a Service Contract . The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments in this ASU is permitted, including adoption in any interim period, for all entities. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopted ASU 2018-15 for the period ending March 31, 2020. There was no material impact on the financial statements. In October 2018, the FASB issued ASU No. 2018-16, Derivatives and Hedging (Topic 815), Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes . The amendments in this ASU permit use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the interest rates on direct Treasury obligations of the U.S. government, the London Interbank Offered Rate (LIBOR) swap rate, the Overnight Index Swap (OIS) Rate based on the Fed Funds Effective Rate and the Securities Industry and Financial Markets Association (SIFMA) Municipal Swap Rate. The amendments in this ASU are required to be adopted concurrently with the amendments in ASU 2017-12. For public companies, this would be for fiscal years, and interim periods within those fiscal years beginning after December 15, 2018. The Company adopted ASU No. 2018-16 for the period ending March 31, 2019 concurrently with ASU 2017-12. There was no material impact on the financial statements. In July 2019, the FASB issued ASU No. 2019-07, Codification Updates to SEC Sections, Amendments to SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10532, Disclosure Update and Simplification, and Nos. 33-10231 and 33-10442, Investment Company Reporting Modernization, and Miscellaneous Updates . The amendments in this ASU update the Codification to reflect the amendments of various SEC disclosure requirements that the agency determined were redundant, duplicative, overlapping, outdated or superseded. The SEC amended its disclosure rules in 2018 with the aim of providing investors with useful disclosure information and to simplify compliance without significantly altering the mix of the information being provided. This ASU was effective upon release and there was no material impact on the financial statements. In November 2019, the FASB issued ASU No. 2019-08, Compensation - Stock Compensation (Topic 718) and Revenue from Contracts with Customers (Topic 606), Codification Improvements - Share-Based Consideration Payable to a Customer. The amendments in this ASU require that an entity measure and classify share-based payment awards granted to a customer by applying the guidance in Topic 718. The amount recorded as a reduction of the transaction price is required to be measured on the basis of the grant-date fair value of the share-based payment award in accordance with Topic 718. The grant date is the date at which a grantor (supplier) and a grantee (customer) reach a mutual understanding of the key terms and conditions of a share-based payment award. The classification and subsequent measurement of the award are subject to the guidance in Topic 718 unless the share-based payment award is subsequently modified and the grantee is no longer a customer. The Company adopted ASU 2019-08 for the period ending December 31, 2019. There was no material impact on the financial statements. In November 2019, the FASB issued ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses. The amendments in this ASU clarify or address stakeholders' specific issues about certain aspects of the amendments in ASU 2016-13 in the following areas: expected recoveries for purchased financial assets with credit deterioration, transition relief for troubled debt restructurings, disclosures related to accrued interest receivables and financial assets secured by collateral maintenance provisions. For public companies, ASU 2019-11 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 and will be adopted concurrently with ASU 2016-13. As noted above, we have elected to delay the adoption of ASU 2016-13 as permitted by the CARES Act. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing specific exceptions included in Topic 740, introducing other simplifications and making technical corrections. For public business entities, the amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted. The Company is currently evaluating the impact the adoption of this ASU will have on the financial statements.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed using the weighted average number of actual common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that would occur from the exercise of common stock options outstanding. ESOP shares are considered outstanding for this calculation unless unearned. The computation of basic and diluted earnings per share for the periods presented is as follows: Three Months Ended March 31, 2020 2019 Common shares outstanding at the beginning of the period 9,351,694 9,336,441 Weighted average number of net shares issued 46,232 30,816 Weighted average shares outstanding (basic) 9,397,926 9,367,257 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 3,754 4,008 Weighted average number of shares (diluted) 9,401,680 9,371,265 Net income (In thousands) $ 7,075 $ 11,203 Earnings per share: Basic $ 0.75 $ 1.20 Diluted $ 0.75 $ 1.20

Other Comprehensive Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Other Comprehensive Income	Other Comprehensive Income The following table summarizes the balances of each component of accumulated other comprehensive income (AOCI), included in stockholders’ equity, at March 31, 2020 and December 31, 2019 : March 31, December 31, 2019 (amounts in thousands) Net unrealized income on available-for-sale securities $ 4,788 $ 4,234 Net unrealized loss on derivatives used for cash flow hedges (3,447 ) (2,349 ) Tax effect $ (335 ) $ (470 ) Net-of-tax amount $ 1,006 $ 1,415

Securities

Securities	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The carrying values of investment securities at March 31, 2020 and December 31, 2019 are summarized in the following table (dollars in thousands): March 31, 2020 December 31, 2019 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 148,740 40.00 % $ 128,585 36.19 % Other securities (FHLB, FHLMC and FNMA) 12,826 3.45 15,229 4.29 State and political subdivisions 210,273 56.55 211,489 59.52 Total securities available for sale $ 371,839 100.00 % $ 355,303 100.00 % Investment securities have been classified in the consolidated balance sheets according to management’s intent. Available-for-sale securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders' equity. There were no trading or held to maturity securities as of March 31, 2020 or December 31, 2019 . The carrying amount of available-for-sale securities and their approximate fair values were as follows as of March 31, 2020 and December 31, 2019 (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value March 31, 2020: U.S. Treasury $ 142,669 $ 6,071 $ — $ 148,740 Other securities (FHLB, FHLMC and FNMA) 12,775 51 — 12,826 State and political subdivisions 211,607 1,135 (2,469 ) 210,273 Total $ 367,051 $ 7,257 $ (2,469 ) $ 371,839 December 31, 2019: U.S. Treasury $ 127,096 $ 1,626 $ (137 ) $ 128,585 Other securities (FHLB, FHLMC and FNMA) 15,287 — (58 ) 15,229 State and political subdivisions 208,686 2,938 (135 ) 211,489 Total $ 351,069 $ 4,564 $ (330 ) $ 355,303 The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at March 31, 2020 , were as follows (in thousands): Amortized Cost Fair Value Due in one year or less $ 65,163 $ 65,416 Due after one year through five years 206,921 212,657 Due after five years through ten years 82,468 81,957 Due over ten years 12,499 11,809 Total $ 367,051 $ 371,839 As of March 31, 2020 investment securities with a carrying value of $13.51 million were pledged to collateralize derivative financial instruments and other borrowings. Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands): March 31, 2020 March 31, 2019 Sales proceeds $ 313 $ — Gross realized gains 10 — Gross realized losses — — The following table shows the fair value, gross unrealized losses and the percentage of fair value represented by gross unrealized losses of applicable investment securities owned by the Company, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2020 and December 31, 2019 (in thousands): Less than 12 months 12 months or more Total March 31, 2020 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury — $ — $ — — % — $ — $ — — % — $ — $ — — % Other securities (FHLB, FHLMC and FNMA) — — — — — — — — — — — — State and political subdivisions 381 101,743 (2,460 ) 2.42 9 1,086 (9 ) 0.83 390 102,829 (2,469 ) 2.40 Total temporarily impaired securities 381 $ 101,743 $ (2,460 ) 2.42 % 9 $ 1,086 $ (9 ) 0.83 % 390 $ 102,829 $ (2,469 ) 2.40 % Less than 12 months 12 months or more Total December 31, 2019 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury 11 $ 27,932 $ (136 ) 0.49 % 1 $ 2,495 $ (1 ) 0.04 % 12 $ 30,427 $ (137 ) 0.45 % Other securities (FHLB, FHLMC and FNMA) — — — — 6 15,229 (58 ) 0.38 6 15,229 (58 ) 0.38 State and political subdivisions 66 17,881 (119 ) 0.67 20 3,825 (16 ) 0.42 86 21,706 (135 ) 0.62 Total temporarily impaired securities 77 $ 45,813 $ (255 ) 0.56 % 27 $ 21,549 $ (75 ) 0.35 % 104 $ 67,362 $ (330 ) 0.49 % The Company considered the following information in reaching the conclusion that the impairments disclosed in the table above are temporary and not other-than-temporary impairments. None of the unrealized losses in the above table was due to the deterioration in the credit quality of any of the issues that might result in the non-collection of contractual principal and interest. The unrealized losses are due to changes in interest rates. The Company has not recognized any unrealized loss in income because management does not have the intent to sell the securities included in the previous table. Management has concluded that it is more likely than not that the Company will not be required to sell these securities prior to recovery of the amortized cost basis.

Loans

Loans	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans	Loans Classes of loans are as follows: March 31, December 31, (Amounts In Thousands) Agricultural $ 96,811 $ 91,317 Commercial and financial 228,074 221,323 Real estate: Construction, 1 to 4 family residential 83,445 80,209 Construction, land development and commercial 102,820 108,410 Mortgage, farmland 246,203 242,730 Mortgage, 1 to 4 family first liens 905,951 910,742 Mortgage, 1 to 4 family junior liens 148,444 149,227 Mortgage, multi-family 357,194 350,761 Mortgage, commercial 410,200 402,181 Loans to individuals 31,749 32,308 Obligations of state and political subdivisions 52,917 49,896 $ 2,663,808 $ 2,639,104 Net unamortized fees and costs 931 933 $ 2,664,739 $ 2,640,037 Less allowance for loan losses 38,340 33,760 $ 2,626,399 $ 2,606,277 Changes in the allowance for loan losses, the allowance for loan losses applicable to impaired loans and the related loan balance of impaired loans for the three months ended March 31, 2020 were as follows: Three Months Ended March 31, 2020 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 2,400 $ 4,988 $ 2,599 $ 3,950 $ 10,638 $ 7,859 $ 1,326 $ 33,760 Charge-offs (4 ) (15 ) — — (229 ) (2 ) (190 ) (440 ) Recoveries 10 108 2 — 187 14 50 371 Provision 354 1,599 20 146 1,156 1,192 182 4,649 Ending balance $ 2,760 $ 6,680 $ 2,621 $ 4,096 $ 11,752 $ 9,063 $ 1,368 $ 38,340 Ending balance, individually evaluated for impairment $ 217 $ 1,534 $ — $ 3 $ 176 $ — $ 2 $ 1,932 Ending balance, collectively evaluated for impairment $ 2,543 $ 5,146 $ 2,621 $ 4,093 $ 11,576 $ 9,063 $ 1,366 $ 36,408 Loans: Ending balance $ 96,811 $ 228,074 $ 186,265 $ 246,203 $ 1,054,395 $ 767,394 $ 84,666 $ 2,663,808 Ending balance, individually evaluated for impairment $ 1,884 $ 3,853 $ 418 $ 4,130 $ 8,773 $ 3,669 $ 2 $ 22,729 Ending balance, collectively evaluated for impairment $ 94,927 $ 224,221 $ 185,847 $ 242,073 $ 1,045,622 $ 763,725 $ 84,664 $ 2,641,079 Changes in the allowance for loan losses for the three months ended March 31, 2019 were as follows: Three Months Ended March 31, 2019 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 2,789 $ 5,826 $ 3,292 $ 3,972 $ 12,516 $ 8,165 $ 1,250 $ 37,810 Charge-offs — (180 ) (8 ) — (177 ) (4 ) (108 ) (477 ) Recoveries 10 184 2 5 110 85 37 433 Provision (258 ) 174 (358 ) (106 ) (819 ) (23 ) 144 (1,246 ) Ending balance $ 2,541 $ 6,004 $ 2,928 $ 3,871 $ 11,630 $ 8,223 $ 1,323 $ 36,520 Ending balance, individually evaluated for impairment $ 258 $ 1,375 $ — $ — $ 74 $ 483 $ 59 $ 2,249 Ending balance, collectively evaluated for impairment $ 2,283 $ 4,629 $ 2,928 $ 3,871 $ 11,556 $ 7,740 $ 1,264 $ 34,271 Loans: Ending balance $ 93,573 $ 227,403 $ 179,334 $ 238,109 $ 1,068,591 $ 753,163 $ 82,892 $ 2,643,065 Ending balance, individually evaluated for impairment $ 2,740 $ 4,039 $ 832 $ 4,189 $ 6,879 $ 4,333 $ 59 $ 23,071 Ending balance, collectively evaluated for impairment $ 90,833 $ 223,364 $ 178,502 $ 233,920 $ 1,061,712 $ 748,830 $ 82,833 $ 2,619,994 The following table presents the credit quality indicators by type of loans in each category as of March 31, 2020 and December 31, 2019 , respectively (amounts in thousands): Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial March 31, 2020 Grade: Excellent $ 3,710 $ 3,517 $ — $ 241 Good 14,405 46,648 9,646 15,969 Satisfactory 45,924 122,917 53,520 48,413 Monitor 26,066 44,584 18,506 30,190 Special Mention 3,606 6,438 747 7,218 Substandard 3,100 3,970 1,026 789 Total $ 96,811 $ 228,074 $ 83,445 $ 102,820 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family March 31, 2020 Grade: Excellent $ 6,837 $ 2,732 $ 262 $ 18,974 Good 37,941 32,019 4,086 51,338 Satisfactory 136,433 742,836 135,444 191,849 Monitor 53,050 101,037 5,494 61,677 Special Mention 3,971 10,534 1,341 27,361 Substandard 7,971 16,793 1,817 5,995 Total $ 246,203 $ 905,951 $ 148,444 $ 357,194 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total March 31, 2020 Grade: Excellent $ 26,494 $ — $ 7,313 $ 70,080 Good 81,334 199 14,266 307,851 Satisfactory 214,053 30,871 23,158 1,745,418 Monitor 80,061 387 7,795 428,847 Special Mention 4,967 235 385 66,803 Substandard 3,291 57 — 44,809 Total $ 410,200 $ 31,749 $ 52,917 $ 2,663,808 Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial December 31, 2019 Grade: Excellent $ 3,594 $ 3,461 $ 260 $ 190 Good 12,380 47,843 8,868 23,217 Satisfactory 43,308 117,114 51,093 47,987 Monitor 24,857 44,543 17,505 29,009 Special Mention 3,110 5,157 2,483 7,428 Substandard 4,068 3,205 — 579 Total $ 91,317 $ 221,323 $ 80,209 $ 108,410 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family December 31, 2019 Grade: Excellent $ 3,630 $ 3,209 $ 261 $ 18,955 Good 40,118 32,474 4,233 47,871 Satisfactory 134,738 751,215 136,079 189,391 Monitor 53,147 96,353 5,473 60,965 Special Mention 3,033 11,167 1,469 27,559 Substandard 8,064 16,324 1,712 6,020 Total $ 242,730 $ 910,742 $ 149,227 $ 350,761 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total December 31, 2019 Grade: Excellent $ 27,017 $ — $ 7,444 $ 68,021 Good 79,467 221 14,465 311,157 Satisfactory 206,196 31,385 20,274 1,728,780 Monitor 81,381 437 7,323 420,993 Special Mention 4,802 212 390 66,810 Substandard 3,318 53 — 43,343 Total $ 402,181 $ 32,308 $ 49,896 $ 2,639,104 The below are descriptions of the credit quality indicators: Excellent – Excellent rated loans are prime quality loans covered by highly liquid collateral with generous margins or supported by superior current financial conditions reflecting substantial net worth, relative to total credit extended, and based on assets of a stable and non-speculative nature whose values can be readily verified. Identified repayment source or cash flow is abundant and assured. Good – Good rated loans are adequately secured by readily marketable collateral or good financial condition characterized by liquidity, flexibility and sound net worth. Loans are supported by sound primary and secondary payment sources and timely and accurate financial information. Satisfactory – Satisfactory rated loans are loans to borrowers of average financial means not especially vulnerable to changes in economic or other circumstances, where the major support for the extension is sufficient collateral of a marketable nature, and the primary source of repayment is seen to be clear and adequate. Monitor – Monitor rated loans are identified by management as warranting special attention for a variety of reasons that may bear on ultimate collectability. This may be due to adverse trends, a particular industry, loan structure, or repayment that is dependent on projections, or a one-time occurrence. Special Mention – Special mention rated loans are supported by a marginal payment capacity and are marginally protected by collateral. There are identified weaknesses that if not monitored and corrected may adversely affect the Company’s credit position. A special mention credit would typically have a weakness in one of the general categories (cash flow, collateral position or payment history) but not in all categories. Substandard – Substandard loans are not adequately supported by the paying capacity of the borrower and may be inadequately collateralized. These loans have a well-defined weakness or weaknesses. For these loans, it is more probable than not that the Company could sustain some loss if the deficiency(ies) is not corrected. Past due loans as of March 31, 2020 and December 31, 2019 were as follows: 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Accruing Loans Past Due 90 Days or More (Amounts In Thousands) March 31, 2020 Agricultural $ 1,655 $ 463 $ 316 $ 2,434 $ 94,377 $ 96,811 $ 20 Commercial and financial 2,296 459 256 3,011 225,063 228,074 176 Real estate: Construction, 1 to 4 family residential 3,555 190 — 3,745 79,700 83,445 — Construction, land development and commercial 1,464 240 — 1,704 101,116 102,820 — Mortgage, farmland 3,992 112 953 5,057 241,146 246,203 161 Mortgage, 1 to 4 family first liens 9,148 250 4,479 13,877 892,074 905,951 528 Mortgage, 1 to 4 family junior liens 855 101 149 1,105 147,339 148,444 — Mortgage, multi-family — 95 — 95 357,099 357,194 — Mortgage, commercial 1,162 855 — 2,017 408,183 410,200 — Loans to individuals 226 90 16 332 31,417 31,749 — Obligations of state and political subdivisions — — — — 52,917 52,917 — $ 24,353 $ 2,855 $ 6,169 $ 33,377 $ 2,630,431 $ 2,663,808 $ 885 December 31, 2019 Agricultural $ 163 $ 275 $ 122 $ 560 $ 90,757 $ 91,317 $ 48 Commercial and financial 1,076 229 101 1,406 219,917 221,323 65 Real estate: Construction, 1 to 4 family residential 635 — — 635 79,574 80,209 — Construction, land development and commercial 215 101 — 316 108,094 108,410 — Mortgage, farmland 736 — 610 1,346 241,384 242,730 — Mortgage, 1 to 4 family first liens 5,026 3,100 4,149 12,275 898,467 910,742 354 Mortgage, 1 to 4 family junior liens 813 126 233 1,172 148,055 149,227 139 Mortgage, multi-family — 97 — 97 350,664 350,761 — Mortgage, commercial 321 489 — 810 401,371 402,181 — Loans to individuals 226 55 15 296 32,012 32,308 — Obligations of state and political subdivisions — — — — 49,896 49,896 — $ 9,211 $ 4,472 $ 5,230 $ 18,913 $ 2,620,191 $ 2,639,104 $ 606 The Company does not have a material amount of loans that are past due less than 90 days where there are serious doubts as to the ability of the borrowers to comply with the loan repayment terms. Certain impaired loan information by loan type at March 31, 2020 and December 31, 2019 , was as follows: March 31, 2020 December 31, 2019 Non-accrual loans (1) Accruing loans past due 90 days or more TDR loans Non- accrual loans (1) Accruing loans past due 90 days or more TDR loans (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 1,356 $ 20 $ 425 $ 1,192 $ 48 $ 404 Commercial and financial 1,295 176 1,859 679 65 1,934 Real estate: Construction, 1 to 4 family residential — — — — — — Construction, land development and commercial — — 319 — — 320 Mortgage, farmland 1,288 161 2,681 1,369 — 2,712 Mortgage, 1 to 4 family first liens 6,489 528 1,615 6,558 354 1,626 Mortgage, 1 to 4 family junior liens 240 — — 94 139 — Mortgage, multi-family 95 — 1,709 97 — 1,719 Mortgage, commercial 1,286 — 579 779 — 593 $ 12,049 $ 885 $ 9,187 $ 10,768 $ 606 $ 9,308 (1) There were $4.99 million and $4.34 million of TDR loans included within nonaccrual loans as of March 31, 2020 and December 31, 2019 , respectively. Loans 90 days or more past due that are still accruing interest increased $0.28 million from December 31, 2019 to March 31, 2020 due to an increase in the number of accruing loans past due 90 days or more. As of March 31, 2020 there were 15 accruing loans past due 90 days or more. The average accruing loans past due as of March 31, 2020 are $0.06 million . There were 8 accruing loans past due 90 days or more as of December 31, 2019 and the average loan balance was $0.08 million . The accruing loans past due 90 days or more balances are believed to be adequately collateralized and the Company expects to collect all principal and interest as contractually due under these loans. The Company may modify the terms of a loan to maximize the collection of amounts due. Such a modification is considered a troubled debt restructuring (“TDR”). In most cases, the modification is either a reduction in interest rate, conversion to interest only payments or an extension of the maturity date. The borrower is experiencing financial difficulties or is expected to experience difficulties in the near-term, so a concessionary modification is granted to the borrower that would otherwise not be considered. TDR loans accrue interest as long as the borrower complies with the revised terms and conditions and has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles. Below is a summary of information for TDR loans as of March 31, 2020 and December 31, 2019 : March 31, 2020 December 31, 2019 Number of contracts Recorded investment Commitments outstanding Number of contracts Recorded investment Commitments outstanding (Amounts In Thousands) (Amounts In Thousands) Agricultural 11 $ 1,559 $ — 9 $ 1,552 $ 3 Commercial and financial 17 2,685 85 16 2,641 95 Real estate: Construction, 1 to 4 family residential — — — — — — Construction, land development and commercial 2 319 — 2 320 — Mortgage, farmland 8 3,969 — 8 4,021 — Mortgage, 1 to 4 family first liens 16 2,067 — 16 2,083 — Mortgage, 1 to 4 family junior liens — — — — — — Mortgage, multi-family 2 1,709 — 2 1,719 — Mortgage, commercial 8 1,865 — 7 1,373 — Loans to individuals — — — — — — 64 $ 14,173 $ 85 60 $ 13,709 $ 98 The following is a summary of TDR loans that were modified during the three months ended March 31, 2020 : Three Months Ended March 31, 2020 Number of contracts Pre-modification recorded investment Post-modification recorded investment Agricultural 2 $ 93 $ 93 Commercial and financial 1 199 199 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland — — — Mortgage, 1 to 4 family first lien — — — Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 1 513 513 4 $ 805 $ 805 The Company had commitments to lend $0.09 million in additional borrowings to restructured loan customers as of March 31, 2020 . The Company had commitments to lend $0.10 million in additional borrowings to restructured loan customers as of December 31, 2019 . These commitments were in the normal course of business. The additional borrowings were not used to facilitate payments on these loans. There were no TDR loans that were in payment default (defined as past due 90 days or more) during the period ended March 31, 2020 and one totaling $0.065 million modified during the year ended December 31, 2019 . Information regarding impaired loans as of and for the three months ended March 31, 2020 is as follows: March 31, 2020 Three Months Ended Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: (Amounts In Thousands) Agricultural $ 1,584 $ 2,251 $ — $ 1,688 $ 6 Commercial and financial 1,303 2,177 — 1,371 12 Real estate: Construction, 1 to 4 family residential 99 144 — 100 — Construction, land development and commercial 319 334 — 320 4 Mortgage, farmland 3,969 4,496 — 3,995 39 Mortgage, 1 to 4 family first liens 6,838 8,630 — 6,896 18 Mortgage, 1 to 4 family junior liens 95 339 — 94 — Mortgage, multi-family 1,804 1,921 — 1,810 20 Mortgage, commercial 1,865 2,415 — 1,876 7 Loans to individuals — 14 — — — $ 17,876 $ 22,721 $ — $ 18,150 $ 106 With an allowance recorded: Agricultural $ 300 $ 300 $ 217 $ 300 $ 1 Commercial and financial 2,550 2,718 1,534 2,421 23 Real estate: Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — — — — Mortgage, farmland 161 161 3 161 3 Mortgage, 1 to 4 family first liens 1,695 1,962 126 1,730 9 Mortgage, 1 to 4 family junior liens 145 146 50 147 — Mortgage, multi-family — — — — — Mortgage, commercial — — — — — Loans to individuals 2 2 2 2 — $ 4,853 $ 5,289 $ 1,932 $ 4,761 $ 36 Total: Agricultural $ 1,884 $ 2,551 $ 217 $ 1,988 $ 7 Commercial and financial 3,853 4,895 1,534 3,792 35 Real estate: Construction, 1 to 4 family residential 99 144 — 100 — Construction, land development and commercial 319 334 — 320 4 Mortgage, farmland 4,130 4,657 3 4,156 42 Mortgage, 1 to 4 family first liens 8,533 10,592 126 8,626 27 Mortgage, 1 to 4 family junior liens 240 485 50 241 — Mortgage, multi-family 1,804 1,921 — 1,810 20 Mortgage, commercial 1,865 2,415 — 1,876 7 Loans to individuals 2 16 2 2 — $ 22,729 $ 28,010 $ 1,932 $ 22,911 $ 142 Information regarding impaired loans as of December 31, 2019 is as follows: Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: (Amounts In Thousands) Agricultural $ 1,596 $ 2,157 $ — Commercial and financial 1,340 2,220 — Real estate: Construction, 1 to 4 family residential 101 144 — Construction, land development and commercial 320 336 — Mortgage, farmland 4,081 4,613 — Mortgage, 1 to 4 family first liens 7,157 9,015 — Mortgage, 1 to 4 family junior liens — 246 — Mortgage, multi-family 1,816 1,930 — Mortgage, commercial 1,302 1,852 — Loans to individuals — 14 — $ 17,713 $ 22,527 $ — With an allowance recorded: Agricultural $ 134 $ 134 $ 87 Commercial and financial 1,402 1,539 792 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland — — — Mortgage, 1 to 4 family first liens 1,280 1,501 64 Mortgage, 1 to 4 family junior liens 233 233 47 Mortgage, multi-family — — — Mortgage, commercial 70 70 1 Loans to individuals 93 93 93 $ 3,212 $ 3,570 $ 1,084 Total: Agricultural $ 1,730 $ 2,291 $ 87 Commercial and financial 2,742 3,759 792 Real estate: Construction, 1 to 4 family residential 101 144 — Construction, land development and commercial 320 336 — Mortgage, farmland 4,081 4,613 — Mortgage, 1 to 4 family first liens 8,437 10,516 64 Mortgage, 1 to 4 family junior liens 233 479 47 Mortgage, multi-family 1,816 1,930 — Mortgage, commercial 1,372 1,922 1 Loans to individuals 93 107 93 $ 20,925 $ 26,097 $ 1,084 Impaired loans increased $1.80 million from December 31, 2019 to March 31, 2020 . Impaired loans include any loan that has been placed on nonaccrual status, accruing loans past due 90 days or more and TDR loans. Impaired loans also include loans that, based on management’s evaluation of current information and events, the Company expects to be unable to collect in full according to the contractual terms of the original loan agreement. Impaired loans were 0.85% of loans held for investment as of March 31, 2020 and 0.79% as of December 31, 2019 . The increase in impaired loans is due to an increase of $0.43 million in loans with a specific reserve, an increase in nonaccrual loans of $1.28 million and an increase in 90 days or more accruing loans of $0.28 million and is offset by a decrease in TDR loans of $0.12 million from December 31, 2019 to March 31, 2020 . The Company regularly reviews a substantial portion of the loans in the portfolio and assesses whether the loans are impaired in accordance with ASC 310. If the loans are impaired, the Company determines if a specific allowance is appropriate. In addition, the Company's management also reviews and, where determined necessary, provides allowances for particular loans based upon (1) reviews of specific borrowers and (2) management’s assessment of areas that management considers are of higher credit risk, including loans that have been restructured. Loans that are determined not to be impaired and for which there are no specific allowances are classified into one or more risk categories. Based upon the risk category assigned, the Company allocates a percentage, as determined by management, for a required allowance needed. The determination of the appropriate percentage begins with historical loss experience factors, which are then adjusted for levels and trends in past due loans, levels and trends in charged-off and recovered loans, trends in volume growth, trends in problem and watch loans, trends in restructured loans, local economic trends and conditions, industry and other conditions, and effects of changing interest rates. Specific allowances for losses on impaired loans are established if the loan balances exceed the net present value of the relevant future cash flows or the fair value of the relevant collateral based on updated appraisals and/or updated collateral analysis for the properties if the loan is collateral dependent. The Company may recognize a charge off or record a specific allowance related to an impaired loan if there is a collateral shortfall or it is unlikely the borrower can make all principal and interest payments as contractually due. For loans that are collateral dependent, losses are evaluated based on the portion of a loan that exceeds the fair market value of the collateral. In general, this is the amount that the carrying value of the loan exceeds the related appraised value less estimated costs to sell the collateral. Generally, it is the Company’s policy not to rely on appraisals that are older than one year prior to the date the impairment is being measured. The most recent appraisal values may be adjusted if, in the Company’s judgment, experience and other market data indicate that the property’s value, use, condition, exit market or other variable affecting its value may have changed since the appraisal was performed, consistent with the December 2006 joint interagency guidance on the allowance for loan losses. The charge off or loss adjustment supported by an appraisal is considered the minimum charge off. Any adjustments made to the appraised value are to provide an additional charge off or specific reserve based on the applicable facts and circumstances. In instances where there is an estimated decline in value, a specific reserve may be provided or a charge off taken pending confirmation of the amount of the loss from an updated appraisal. Upon receipt of the new appraisals, an additional specific reserve may be provided or charge off taken based on the appraised value of the collateral. On average, appraisals are obtained within one month of order.

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	Leases The Bank leases branch offices, parking facilities and certain equipment under operating leases. The leases have remaining lease terms of 1 year to 16 years , some of which include options to extend the leases for up to 10 years , and some of which include options to terminate the leases within 1 year . As the options are reasonably certain to be exercised, they are recognized as part of the right-of-use assets and lease liabilities. For the three months ended March 31, 2020 and 2019, total operating lease expense was $0.14 million and $0.17 million , respectively, and is included in occupancy expenses in the consolidated statements of income. Included in this for the three months ended March 31, 2020 and 2019 were $0.11 million and $0.14 million , respectively, of operating lease costs, $0.01 million and $0.01 million , respectively, of short term lease costs, and $0.02 million and $0.02 million , respectively, of variable lease costs. For the three months ended March 31, 2020 and 2019, cash paid for amounts included in the measurement of operating lease liabilities was $0.12 million and $0.14 million , respectively, and right-of-use assets obtained in exchange for lease obligations was $0.00 million and $3.58 million , respectively. As of March 31, 2020 and December 31, 2019, operating lease right-of-use assets included in other assets was $3.11 million and $3.20 million , respectively. Operating lease liabilities were $3.14 million and $3.23 million as of March 31, 2020 and December 31, 2019. As of March 31, 2020 and December 31, 2019, the weighted average remaining lease term for operating leases was 10.98 years and 10.86 years years, respectively, and the weighted average discount rate for operating leases was 3.46% and 3.46% , respectively. Discount rates used were determined from FHLB borrowing rates for comparable terms. As of March 31, 2020, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2020 $ 352 2021 456 2022 448 2023 301 2024 250 Thereafter 2,009 Total lease payments 3,816 Less imputed interest (679 ) Total operating lease liabilities $ 3,137

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The carrying value and estimated fair values of the Company's financial instruments as of March 31, 2020 are as follows: March 31, 2020 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 268,293 $ 268,293 $ 268,293 $ — $ — Investment securities 383,213 383,213 148,740 234,473 — Loans held for sale 11,592 11,592 — 11,592 — Loans Agricultural 94,051 94,325 — — 94,325 Commercial and financial 221,394 222,339 — — 222,339 Real estate: Construction, 1 to 4 family residential 82,255 82,626 — — 82,626 Construction, land development and commercial 101,389 100,695 — — 100,695 Mortgage, farmland 242,107 240,554 — — 240,554 Mortgage, 1 to 4 family first liens 896,775 887,278 — — 887,278 Mortgage, 1 to 4 family junior liens 146,799 142,083 — — 142,083 Mortgage, multi-family 352,986 353,963 — — 353,963 Mortgage, commercial 405,345 402,564 — — 402,564 Loans to individuals 30,984 32,244 — — 32,244 Obligations of state and political subdivisions 52,314 52,850 — — 52,850 Accrued interest receivable 13,691 13,691 — 13,691 — Total financial instrument assets $ 3,303,188 $ 3,288,310 $ 417,033 $ 259,756 $ 2,611,521 Financial instrument liabilities Deposits Noninterest-bearing deposits $ 381,171 $ 381,171 $ — $ 381,171 $ — Interest-bearing deposits 2,350,543 2,370,184 — 2,370,184 — Federal Home Loan Bank borrowings 185,000 186,018 — 186,018 — Interest rate swaps 3,447 3,447 — 3,447 — Accrued interest payable 2,352 2,352 — 2,352 — Total financial instrument liabilities $ 2,922,513 $ 2,943,172 $ — $ 2,943,172 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 479,581 $ — $ — $ — $ — Letters of credit 8,447 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 488,028 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. The carrying value and estimated fair values of the Company's financial instruments as of December 31, 2019 are as follows: December 31, 2019 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 241,965 $ 241,965 $ 241,965 $ — $ — Investment securities 366,368 366,368 128,585 237,783 — Loans held for sale 8,400 8,400 — 8,400 — Loans Agricultural 88,917 90,118 — — 90,118 Commercial and financial 216,335 217,640 — — 217,640 Real estate: Construction, 1 to 4 family residential 79,096 79,954 — — 79,954 Construction, land development and commercial 106,924 107,276 — — 107,276 Mortgage, farmland 238,780 239,521 — — 239,521 Mortgage, 1 to 4 family first liens 902,630 896,676 — — 896,676 Mortgage, 1 to 4 family junior liens 147,634 143,261 — — 143,261 Mortgage, multi-family 346,938 349,663 — — 349,663 Mortgage, commercial 398,145 395,838 — — 395,838 Loans to individuals 31,455 32,722 — — 32,722 Obligations of state and political subdivisions 49,423 50,564 — — 50,564 Accrued interest receivable 12,442 12,442 — 12,442 — Total financial instrument assets $ 3,235,452 $ 3,232,408 $ 370,550 $ 258,625 $ 2,603,233 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 387,612 $ 387,612 $ — $ 387,612 $ — Interest-bearing deposits 2,273,752 2,292,332 — 2,292,332 — Federal Home Loan Bank borrowings 185,000 186,091 — 186,091 — Interest rate swaps 2,349 2,349 2,349 Accrued interest payable 2,474 2,474 — 2,474 — Total financial instrument liabilities $ 2,851,187 $ 2,870,858 $ — $ 2,870,858 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 424,165 $ — $ — $ — $ — Letters of credit 8,569 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 432,734 $ — $ — $ — $ — (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. Fair value of financial instruments : FASB ASC 820, Fair Value Measurements and Disclosures (“ASC 820”) provides a single definition for fair value, a framework for measuring fair value and expanded disclosures concerning fair value. Fair value is defined under ASC 820 as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company determines the fair market value of its financial instruments based on the fair value hierarchy established in ASC 820. There are three levels of inputs that may be used to measure fair value as follows: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than quoted prices included within Level 1. Observable inputs include the quoted prices for similar assets or liabilities in markets that are not active and inputs other than quoted prices that are observable for the asset or liability. Level 3 Unobservable inputs supported by little or no market activity for financial instruments. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. The Company is required to use observable inputs, to the extent available, in the fair value estimation process unless that data results from forced liquidations or distressed sales. The following is a description of valuation methodologies used for assets and liabilities recorded at fair value. ASSETS Investment securities available for sale : Investment securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If a quoted price is not available, the fair value is obtained from benchmarking the security against similar securities. U.S. Treasury securities are considered Level 1 with the remaining securities considered Level 2. The pricing for investment securities is obtained from an independent source. There are no Level 3 investment securities owned by the Company. The Company obtains an understanding of the independent source’s valuation methodologies used to determine fair value by level of security. The Company validates assigned fair values on a sample basis using an additional third-party provider pricing service to determine if the fair value measurement is reasonable. Due to the nature of our investment portfolio, we do not expect significant and unusual fluctuations as fair value changes primarily relate to interest rate changes. No unusual fluctuations were identified during the three months ended March 31, 2020 . If a fluctuation requiring investigation was identified, the Company would research the change with the independent source or other available information. Loans held for sale and Loans : ASU 2016-01, Financial Instruments -Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Methodologies utilized for this financial statement period are as follows: •Income Approach: Fair value is determined based on a discounted cash flow analysis. The discounted cash flow analysis was based on the contractual maturity of the loan and market indications of rates, prepayment speeds, defaults and credit risk. •Asset Approach: Fair value is determined based on the estimated values of the underlying collateral or individual analysis of receipts. This provides a better indication of value than the contractual income streams as these loans are not performing or exhibit strong signs indicative of non-performance. Fair value has been estimated in accordance with ASC 820, Fair Value Measurements and Disclosures, and is intended to represent the price that would be received in an orderly transaction between market participants as of the measurement date. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, at least one significant assumption not observable in the market was utilized. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Inputs to these valuation techniques are subjective in nature, involve uncertainties and require significant judgment and therefore cannot be determined with precision. Accordingly, the fair value estimates presented are not necessarily indicative of the amounts to be realized in a current market exchange. Loans are classified as Level 3. Loans held for sale are carried at historical cost. The carrying amount is a reasonable estimate of fair value because of the short time between origination of the loan and its sale on the secondary market (Level 2). The market is active for these loans and as a result prices for similar assets are available. Impaired loans : A loan is considered to be impaired when it is probable that all of the principal and interest due may not be collected according to its contractual terms. Generally, when a loan is considered impaired, the amount of reserve required under ASC 310, Receivables , is measured based on the fair value of the underlying collateral. The Company makes such measurements on all material loans deemed impaired using the fair value of the collateral for collateral dependent loans or based on the present value of the estimated future cash flows of interest and principal discounted at the loans effective interest rate or the fair value of the loan if determinable. The fair value of collateral used by the Company is determined by obtaining an observable market price or by obtaining an appraised value from an independent, licensed or certified appraiser, using observable market data. This data includes information such as selling price of similar properties and capitalization rates of similar properties sold within the market, expected future cash flows or earnings of the subject property based on current market expectations, and other relevant factors. All appraised values are adjusted for market-related trends based on the Company's experience in sales and other appraisals of similar property types as well as estimated selling costs. Each quarter management reviews all collateral dependent impaired loans on a loan-by-loan basis to determine whether updated appraisals are necessary based on loan performance, collateral type and guarantor support. At times, the Company measures the fair value of collateral dependent impaired loans using appraisals with dates prior to one year from the date of review. These appraisals are discounted by applying current, observable market data about similar property types such as sales contracts, estimations of value by individuals familiar with the market, other appraisals, sales or collateral assessments based on current market activity until updated appraisals are obtained. Depending on the length of time since an appraisal was performed, the data provided through reviews and estimated selling costs, collateral values are typically discounted by 0-35%. These loans are considered Level 3 as the instruments used to determine fair market value require significant management judgment and estimation. Foreclosed assets : The Company does not record foreclosed assets at fair value on a recurring basis. Foreclosed assets consist mainly of other real estate owned but may include other types of assets repossessed by the Company. Foreclosed assets are adjusted to the lower of carrying value or fair value less the cost of disposal. Fair value is generally based upon independent market prices or appraised values of the collateral, and may include a marketability discount as deemed necessary by management based on its experience with similar types of real estate. The value of foreclosed assets is evaluated periodically as a nonrecurring fair value adjustment. Foreclosed assets are classified as Level 3. Off-balance sheet instruments : Fair values for outstanding letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties' credit standing. The fair value of the outstanding letters of credit is not significant. Unfunded loan commitments are not valued since the loans are generally priced at market at the time of funding (Level 2). LIABILITIES Interest Rate Swap Agreements : The fair value is estimated using forward-looking interest rate curves and is calculated using discounted cash flows that are observable or that can be corroborated by observable market data (Level 2). Assets and Liabilities Recorded at Fair Value on a Recurring Basis The table below represents the balances of assets and liabilities measured at fair value on a recurring basis: March 31, 2020 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ 148,740 $ — $ — $ 148,740 State and political subdivisions — 210,273 — 210,273 Other securities (FHLB, FHLMC and FNMA) — 12,826 — 12,826 Derivative Financial Instruments Interest rate swaps $ — (3,447 ) $ — (3,447 ) Total $ 148,740 $ 219,652 $ — $ 368,392 December 31, 2019 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ 128,585 $ — $ — $ 128,585 State and political subdivisions — 211,489 — 211,489 Other securities (FHLB, FHLMC and FNMA) — 15,229 — 15,229 Derivative Financial Instruments Interest rate swaps — (2,349 ) — (2,349 ) Total $ 128,585 $ 224,369 $ — $ 352,954 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. There were no transfers between Levels 1, 2 or 3 during the three months ended March 31, 2020 and the year ended December 31, 2019 . Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis The Company is required to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. The valuation methodologies used to measure these fair value adjustments are described above. The following tables present the Company’s assets that are measured at fair value on a nonrecurring basis. March 31, 2020 Three Months Ended March 31, 2020 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,371 $ 1,371 $ — Commercial and financial — — 2,099 2,099 — Real Estate: — Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — 215 215 — Mortgage, farmland — — 3,464 3,464 — Mortgage, 1 to 4 family first liens — — 7,850 7,850 93 Mortgage, 1 to 4 family junior liens — — 189 189 — Mortgage, multi-family — — 1,804 1,804 — Mortgage, commercial — — 1,732 1,732 — Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 18,724 $ 18,724 $ 93 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero . (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (continued) December 31, 2019 Year Ended December 31, 2019 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,272 $ 1,272 $ 36 Commercial and financial — — 1,803 1,803 499 Real Estate: Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — 215 215 8 Mortgage, farmland — — 3,576 3,576 — Mortgage, 1 to 4 family first liens — — 7,986 7,986 370 Mortgage, 1 to 4 family junior liens — — 49 49 — Mortgage, multi-family — — 1,816 1,816 — Mortgage, commercial — — 1,237 1,237 125 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 17,954 $ 17,954 $ 1,038 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Stock Repurchase Program

Stock Repurchase Program	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Stock Repurchase Program	Stock Repurchase Program On July 26, 2005, the Company’s Board of Directors authorized a program to repurchase up to a total of 1,500,000 shares of the Company’s common stock (the “2005 Stock Repurchase Program”). The Company’s Board of Directors has authorized the 2005 Stock Repurchase Program through December 31, 2020. The Company expects the purchases pursuant to the 2005 Stock Repurchase Program to be made from time to time in private transactions at a price equal to the most recent quarterly independent appraisal of the shares of the Company’s common stock and with the Board reviewing the overall results of the 2005 Stock Repurchase Program on a quarterly basis. All purchases made pursuant to the 2005 Stock Repurchase Program since its inception have been made on that basis. The amount and timing of stock repurchases will be based on various factors, such as the Board’s assessment of the Company’s capital structure and liquidity, the amount of interest shown by shareholders in selling shares of stock to the Company at their appraised value, and applicable regulatory, legal and accounting factors. The Company has purchased 1,284,884 shares of its common stock in privately negotiated transactions from August 1, 2005 through March 31, 2020 . Of these 1,284,884 shares, 68,881 shares were purchased during the quarter ended March 31, 2020 , at an average price per share of $65.88 .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Concentrations of credit risk : The Bank’s loans, commitments to extend credit, unused lines of credit and outstanding letters of credit have been granted to customers within the Bank's market area. Investments in securities issued by state and political subdivisions within the state of Iowa totaled approximately $102.08 million . The concentrations of credit by type of loan are set forth in Note 5 to the Consolidated Financial Statements. Outstanding letters of credit were granted primarily to commercial borrowers. Although the Bank has a diversified loan portfolio, a substantial portion of its debtors' ability to honor their contracts is dependent upon the economic conditions in Johnson, Linn and Washington Counties, Iowa. Contingencies : In the normal course of business, the Company and its subsidiaries are subject to pending and threatened legal actions, some of which seek substantial relief or damages. While the ultimate outcome of such legal proceedings cannot be predicted with certainty, after reviewing pending and threatened litigation with counsel, management believes at this time that the outcome of such litigation will not have a material adverse effect on the Company’s business, financial conditions, or results of operations. On April 10, 2019, Hills Bank was sued in a class action lawsuit in the Iowa District Court for Johnson County. The lawsuit seeks class action status for customers who had paid overdraft fees on debit card transactions that were authorized into a positive account, but settled into a negative account. Plaintiff contends that these overdraft fees breached the terms of Hills Bank’s account documents. Plaintiff seeks compensatory and punitive damages for breach of contract. The Bank disputes the merits of Plaintiff’s claims and filed a motion to dismiss the case, which the Court denied. At this stage of the proceedings, it is not possible for management of the Bank to determine the probability of an adverse outcome or reasonably estimate the amount of any potential loss. The outbreak of Coronavirus Disease 2019 (“COVID-19”) could adversely impact a broad range of industries in which the Company’s customers operate and impair their ability to fulfill their financial obligations to the Company. The World Health Organization has declared COVID-19 to be a global pandemic indicating that almost all public commerce and related business activities must be, to varying degrees, curtailed with the goal of decreasing the rate of new infections. The spread of the outbreak will likely cause significant disruptions in the U.S. economy and is highly likely to disrupt banking and other financial activity in the areas in which the Company operates and could also potentially create widespread business continuity issues for the Company. The Company’s business is dependent upon the willingness and ability of its employees and customers to conduct banking and other financial transactions. If the global response to contain COVID-19 escalates or is unsuccessful, the Company could experience a material adverse effect on its business, financial condition, results of operations and cash flows. Financial instruments with off-balance sheet risk : The Bank 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. These financial instruments include commitments to extend credit, credit card participations and standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit, credit card participations and standby letters of credit is represented by the contractual amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. A summary of the Bank’s commitments at March 31, 2020 and December 31, 2019 is as follows: March 31, 2020 December 31, 2019 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 69,940 $ 65,203 Credit cards 59,848 57,421 Commercial, real estate and home construction 114,387 94,490 Commercial lines and real estate purchase loans 235,406 207,051 Outstanding letters of credit 8,447 8,569

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Federal income tax expense for the three months ended March 31, 2020 and 2019 was computed using the consolidated effective federal tax rate. The Company also recognized income tax expense pertaining to state franchise taxes payable individually by the subsidiary bank. The Company files a consolidated tax return for federal purposes and separate tax returns for State of Iowa purposes. The tax years ended December 31, 2019 , 2018 , and 2017 remain subject to examination by the Internal Revenue Service. For state tax purposes, the tax years ended December 31, 2019 , 2018 , and 2017 remain open for examination. There were no material unrecognized tax benefits at March 31, 2020 and December 31, 2019 and therefore no interest or penalties on unrecognized tax benefits has been recorded. As of March 31, 2020 , the Company does not anticipate any significant increase in unrecognized tax benefits during the twelve-month period ending March 31, 2021. Income taxes as a percentage of income before taxes were 20.34% for the three months ended March 31, 2020 and 21.22% for the same period in 2019

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments In the normal course of business, the Bank may use derivative financial instruments to manage its interest rate risk. These instruments carry varying degrees of credit, interest rate and market or liquidity risks. Derivative instruments are recognized as either assets or liabilities in the accompanying financial statement and are measured at fair value. The Bank’s objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amount to be exchanged between the counterparties. The Bank is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. The Bank minimizes this risk by entering into derivative contracts with large, stable financial institutions. The Bank has not experienced any losses from nonperformance by counterparties. The Bank monitors counterparty risk in accordance with the provisions of ASC 815. In addition, the Bank’s interest rate-related derivative instruments contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. The Bank was required to pledge $3.45 million of collateral as of March 31, 2020 . Cash Flow Hedges: The Bank executed two forward-starting interest rate swap transactions on November 7, 2013. One of the interest rate swap transactions had an effective date of November 9, 2015, and an expiration date of November 9, 2020, effectively converting $25.00 million of variable rate debt to fixed rate debt. The other interest rate swap transaction had an effective date of November 7, 2016 and an expiration date of November 7, 2023, effectively converting $25.00 million of variable rate debt to fixed rate debt. For accounting purposes, these swap transactions are designated as a cash flow hedge of the changes in cash flows attributable to changes in three-month LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on an amount of the Bank’s debt principal equal to the then-outstanding swap notional amount. At inception, the Bank asserted that the underlying principal balance would remain outstanding throughout the hedge transaction making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swaps. The table below identifies the balance sheet category and fair values of the Bank’s derivative instruments designated as cash flow hedges as of March 31, 2020 and December 31, 2019 : Notional Amount Fair Value Balance Sheet Category Maturity (Amounts in Thousands) March 31, 2020 Interest rate swap $ 25,000 $ (357 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (3,090 ) Other Liabilities 11/7/2023 December 31, 2019 Interest rate swap $ 25,000 $ (279 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (2,070 ) Other Liabilities 11/7/2023 The table below identifies the gains and losses recognized on the Bank’s derivative instruments designated as cash flow hedges for the three months ended March 31, 2020 and year ended December 31, 2019 : Recognized in OCI Reclassified from AOCI into Income Recognized in Income on Derivatives Amount of Gain (Loss) Category Amount of Gain (Loss) Category Amount of Gain (Loss) (Amounts in Thousands) March 31, 2020 Interest rate swap $ (58 ) Interest Expense $ — Other Income $ — Interest rate swap (766 ) Interest Expense — Other Income — December 31, 2019 Interest rate swap $ (119 ) Interest Expense $ — Other Income $ — Interest rate swap (446 ) Interest Expense — Other Income —

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with instructions for Form 10-Q and Regulation S-X. These financial statements include all adjustments (consisting of normal recurring accruals) which in the opinion of management are considered necessary for the fair presentation of the financial position and results of operations for the periods shown. Certain prior year amounts have been reclassified to conform to the current year presentation. The Company considers that it operates as one business segment, a commercial bank.
Revenue Recognition	Revenue Recognition Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers ("ASC 606"), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the Company’s contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit and investment securities as these activities are not subject to the requirements of ASC 606. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606 are the following: Service charges and fees on deposit accounts represent general service fees for monthly account maintenance and activity- or transaction-based fees and consist of transaction-based revenue which includes interchange income, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the Company’s performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Trust income represents monthly fees due from wealth management customers as consideration for managing the customers' assets. Wealth management and trust services include custody of assets, investment management, fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed each month, which is generally the time that payment is received. A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity's obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. As of March 31, 2020, the Company did not have any significant contract balances.
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards: In February 2016, the FASB issued ASU No. 2016-02 (Topic 842), Leases . The ASU provides guidance requiring lessees to recognize right-of-use (ROU) assets and lease liabilities for all leases other than those that meet the definition of short-term leases. For short-term leases, lessees may elect an accounting policy by class of underlying asset under which these assets and liabilities are not recognized and lease payments are generally recognized over the lease term on a straight-line basis. Under this new ASU, lessees will recognize right-of use assets and lease liabilities for most leases currently accounted for as operating leases under generally accepted accounting principles. For public companies, ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company adopted the ASU on January 1, 2019 and used the alternative transition approach which permits the effects of adoption to be applied at the effective date. Consequently, financial information will not be updated and the disclosures required under the new standard will not be provided for dates and periods before January 1, 2019. The new standard provides a number of optional practical expedients in transition. We elected the 'package of practical expedients', which permits us not to reassess under the new standard our prior conclusions about lease identification, lease classification and initial direct costs. We also elected the short-term lease exemption and combining the lease and nonlease components practical expedients. We did not elect the use-of-hindsight or the practical expedient pertaining to land easements; the latter not being applicable to us. The most significant impact upon adoption relates to the recognition of new ROU assets and lease liabilities on our balance sheet for our equipment and real estate operating leases. Upon adoption, we recognized additional operating liabilities of $3.58 million , with corresponding ROU assets of the same amount based on the present value of the remaining rental payments, including options to extend that are expected to be exercised, under current leasing standards for existing operating leases. There was no cumulative effect of adopting the standard. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments (CECL). The ASU changes the way entities recognize impairment of financial assets by requiring immediate recognition of estimated credit losses expected to occur over the remaining life of many financial assets. Under the CECL model, we will be required to present certain financial assets carried at amortized cost, such as loans held for investment and held-to-maturity debt securities, at the net amount expected to be collected. The measurement of expected credit losses is to be based on information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This measurement will take place at the time the financial asset is first added to the balance sheet and periodically thereafter. This differs significantly from the "incurred loss" model required under current GAAP, which delays recognition until it is probable a loss has been incurred. Accordingly, we expect that the adoption of the CECL model will materially affect how we determine our allowance for loan losses and could require us to significantly increase our allowance. For public companies, ASU 2016-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, early adoption is permitted for the fiscal year beginning after December 15, 2018. With the passage of the Coronavirus Aid, Relief, and Economic Security Act (CARES Act), the option to delay CECL was provided until the earlier of the national health emergency being declared over or December 31, 2020. The Company elected to delay implementing CECL and continued to use the incurred loss method to calculate the allowance for loan losses as of and for the period ending March 31, 2020. The Company has implemented a software solution provided by a third party vendor to assist in the determination of the CECL estimate. The CECL model has been finalized and we completed the validation process for the CECL model using an independent outside party in January 2020. Our current planned approach for estimating expected life-time credit losses for loans includes the following key components: • An initial forecast period of one year for all portfolio segments and off-balance-sheet credit exposures. This period reflects management’s expectation of losses based on forward-looking economic scenarios over that time. • A historical loss forecast period covering the remaining contractual life, adjusted for prepayments, by portfolio segment based on the change in key historical economic variables. • A reversion period of up to 3 years connecting the initial loss forecast to the historical loss forecast based on economic conditions at the measurement date. • We will primarily utilize discounted cash flow (DCF) methods to estimate credit losses by portfolio segment. The DCF methods obtain estimated life-time credit losses using the conceptual components described above. Upon adoption on January 1, 2020, we estimate an overall increase in our Allowance for Credit Losses (ACL) for loans of approximately $3 million to $4 million . We also anticipate an unfunded commitments liability of approximately $1.0 million to $2.0 million upon adoption. The future effects of CECL on our ACL will depend on the size and composition of our portfolio, the portfolio’s credit quality and economic conditions, as well as any refinements to our model, methodology and other key assumptions. We will recognize a one-time cumulative-effect adjustment to our allowance for loan losses upon adoption of the new standard. The increase in the ACL will result in a decrease to our regulatory capital amounts and ratios. Once finalized, we estimate the ACL as of March 31, 2020 to be approximately $41 million to $44 million and the unfunded commitments liability to be approximately $4 million to $5 million . In January 2017, the FASB issued ASU No. 2017-03, Accounting Changes and Error Corrections (Topic 250) and Investments - Equity Method and Joint Ventures (Topic 323), Amendments to SEC Paragraphs Pursuant to Staff Announcements at the September 22, 2016 and November 17, 2016 EITF Meetings. This ASU adds an SEC paragraph and amends other Topics pursuant to an SEC staff Announcement made at the September 22, 2016 Emerging Issues Task Force (EITF) meeting. The SEC paragraph applies to ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606); ASU No. 2016-02, Leases (Topic 842); and ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU provides that a company should evaluate ASUs that have not yet been adopted to determine the appropriate financial statement disclosures about the potential material effects of those ASUs on the financial statements when adopted. If the company does not know or cannot reasonably estimate the impact that adoption of the ASUs referenced in this announcement is expected to have on the financial statements, then in addition to making a statement to that effect, the company should consider additional qualitative financial statement disclosures to assist the reader in assessing the significance of the impact that the standard will have on the financial statements of the company when adopted. Additional qualitative disclosures should include a description of the effect of the accounting policies that the company expects to apply and a comparison to the company's current accounting policies. Also, the company should describe the status of its process to implement the new standards and the significant implementation matters yet to be addressed. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 250), Simplifying the Test for Goodwill Impairment. The ASU simplifies the goodwill impairment test by requiring a company to perform its annual or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized when the carrying amount exceeds fair value. For public companies, ASU 2017-04 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company adopted ASU No. 2017-04 for the period ending March 31, 2020. There was no material impact on the financial statements. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities. This ASU requires companies to change the recognition and presentation of the effects of hedge accounting by eliminating the requirement to separately measure and report hedge ineffectiveness and requiring companies to present all of the elements of hedge accounting that affect earnings in the same income statement line as the hedged item. Furthermore, the standard eases the requirements for effectiveness testing, hedge documentation and applying the critical terms match method and introduces new alternatives that will permit companies to reduce the risk of material error corrections if they misapply the shortcut method. For public companies, ASU 2017-12 is effective for fiscal years, and interim periods within those fiscal years beginning after December 15, 2018. The Company adopted ASU No. 2017-12 for the period ending March 31, 2019. There was no material impact on the financial statements. In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718), Improvements to Nonemployee Share-Based Payment Accounting . The amendments in this ASU expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. ASU 2018-07 is effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. The Company adopted ASU No. 2018-07 for the period ending March 31, 2019. There was no material impact on the financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820), Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement . The amendments in this ASU modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, including removal of the requirement to disclose the valuation processes for Level 3 fair value measurements and the additional requirement to disclose the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. ASU 2018-13 is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted upon issuance of this ASU. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. The Company adopted ASU 2018-13 for the period ending March 31, 2020. There was no material impact on the financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangements That Is a Service Contract . The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments in this ASU is permitted, including adoption in any interim period, for all entities. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopted ASU 2018-15 for the period ending March 31, 2020. There was no material impact on the financial statements. In October 2018, the FASB issued ASU No. 2018-16, Derivatives and Hedging (Topic 815), Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes . The amendments in this ASU permit use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the interest rates on direct Treasury obligations of the U.S. government, the London Interbank Offered Rate (LIBOR) swap rate, the Overnight Index Swap (OIS) Rate based on the Fed Funds Effective Rate and the Securities Industry and Financial Markets Association (SIFMA) Municipal Swap Rate. The amendments in this ASU are required to be adopted concurrently with the amendments in ASU 2017-12. For public companies, this would be for fiscal years, and interim periods within those fiscal years beginning after December 15, 2018. The Company adopted ASU No. 2018-16 for the period ending March 31, 2019 concurrently with ASU 2017-12. There was no material impact on the financial statements. In July 2019, the FASB issued ASU No. 2019-07, Codification Updates to SEC Sections, Amendments to SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10532, Disclosure Update and Simplification, and Nos. 33-10231 and 33-10442, Investment Company Reporting Modernization, and Miscellaneous Updates . The amendments in this ASU update the Codification to reflect the amendments of various SEC disclosure requirements that the agency determined were redundant, duplicative, overlapping, outdated or superseded. The SEC amended its disclosure rules in 2018 with the aim of providing investors with useful disclosure information and to simplify compliance without significantly altering the mix of the information being provided. This ASU was effective upon release and there was no material impact on the financial statements. In November 2019, the FASB issued ASU No. 2019-08, Compensation - Stock Compensation (Topic 718) and Revenue from Contracts with Customers (Topic 606), Codification Improvements - Share-Based Consideration Payable to a Customer. The amendments in this ASU require that an entity measure and classify share-based payment awards granted to a customer by applying the guidance in Topic 718. The amount recorded as a reduction of the transaction price is required to be measured on the basis of the grant-date fair value of the share-based payment award in accordance with Topic 718. The grant date is the date at which a grantor (supplier) and a grantee (customer) reach a mutual understanding of the key terms and conditions of a share-based payment award. The classification and subsequent measurement of the award are subject to the guidance in Topic 718 unless the share-based payment award is subsequently modified and the grantee is no longer a customer. The Company adopted ASU 2019-08 for the period ending December 31, 2019. There was no material impact on the financial statements. In November 2019, the FASB issued ASU No. 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses. The amendments in this ASU clarify or address stakeholders' specific issues about certain aspects of the amendments in ASU 2016-13 in the following areas: expected recoveries for purchased financial assets with credit deterioration, transition relief for troubled debt restructurings, disclosures related to accrued interest receivables and financial assets secured by collateral maintenance provisions. For public companies, ASU 2019-11 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 and will be adopted concurrently with ASU 2016-13. As noted above, we have elected to delay the adoption of ASU 2016-13 as permitted by the CARES Act. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing specific exceptions included in Topic 740, introducing other simplifications and making technical corrections. For public business entities, the amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted. The Company is currently evaluating the impact the adoption of this ASU will have on the financial statements.
Earnings Per Share	Earnings Per Share Basic earnings per share is computed using the weighted average number of actual common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that would occur from the exercise of common stock options outstanding. ESOP shares are considered outstanding for this calculation unless unearned.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of computation of basic and diluted earnings per share	The computation of basic and diluted earnings per share for the periods presented is as follows: Three Months Ended March 31, 2020 2019 Common shares outstanding at the beginning of the period 9,351,694 9,336,441 Weighted average number of net shares issued 46,232 30,816 Weighted average shares outstanding (basic) 9,397,926 9,367,257 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 3,754 4,008 Weighted average number of shares (diluted) 9,401,680 9,371,265 Net income (In thousands) $ 7,075 $ 11,203 Earnings per share: Basic $ 0.75 $ 1.20 Diluted $ 0.75 $ 1.20

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Components of accumulated other comprehensive income (AOCI)	The following table summarizes the balances of each component of accumulated other comprehensive income (AOCI), included in stockholders’ equity, at March 31, 2020 and December 31, 2019 : March 31, December 31, 2019 (amounts in thousands) Net unrealized income on available-for-sale securities $ 4,788 $ 4,234 Net unrealized loss on derivatives used for cash flow hedges (3,447 ) (2,349 ) Tax effect $ (335 ) $ (470 ) Net-of-tax amount $ 1,006 $ 1,415

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Carrying values of investment securities	The carrying values of investment securities at March 31, 2020 and December 31, 2019 are summarized in the following table (dollars in thousands): March 31, 2020 December 31, 2019 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 148,740 40.00 % $ 128,585 36.19 % Other securities (FHLB, FHLMC and FNMA) 12,826 3.45 15,229 4.29 State and political subdivisions 210,273 56.55 211,489 59.52 Total securities available for sale $ 371,839 100.00 % $ 355,303 100.00 %
Carrying amount of available-for-sale securities and approximate fair values	The carrying amount of available-for-sale securities and their approximate fair values were as follows as of March 31, 2020 and December 31, 2019 (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value March 31, 2020: U.S. Treasury $ 142,669 $ 6,071 $ — $ 148,740 Other securities (FHLB, FHLMC and FNMA) 12,775 51 — 12,826 State and political subdivisions 211,607 1,135 (2,469 ) 210,273 Total $ 367,051 $ 7,257 $ (2,469 ) $ 371,839 December 31, 2019: U.S. Treasury $ 127,096 $ 1,626 $ (137 ) $ 128,585 Other securities (FHLB, FHLMC and FNMA) 15,287 — (58 ) 15,229 State and political subdivisions 208,686 2,938 (135 ) 211,489 Total $ 351,069 $ 4,564 $ (330 ) $ 355,303 Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands): March 31, 2020 March 31, 2019 Sales proceeds $ 313 $ — Gross realized gains 10 — Gross realized losses — —
Available-for-sale securities classified as per contractual maturities	The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at March 31, 2020 , were as follows (in thousands): Amortized Cost Fair Value Due in one year or less $ 65,163 $ 65,416 Due after one year through five years 206,921 212,657 Due after five years through ten years 82,468 81,957 Due over ten years 12,499 11,809 Total $ 367,051 $ 371,839
Available-for-sale securities, summary of proceeds, gains and losses	The carrying amount of available-for-sale securities and their approximate fair values were as follows as of March 31, 2020 and December 31, 2019 (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value March 31, 2020: U.S. Treasury $ 142,669 $ 6,071 $ — $ 148,740 Other securities (FHLB, FHLMC and FNMA) 12,775 51 — 12,826 State and political subdivisions 211,607 1,135 (2,469 ) 210,273 Total $ 367,051 $ 7,257 $ (2,469 ) $ 371,839 December 31, 2019: U.S. Treasury $ 127,096 $ 1,626 $ (137 ) $ 128,585 Other securities (FHLB, FHLMC and FNMA) 15,287 — (58 ) 15,229 State and political subdivisions 208,686 2,938 (135 ) 211,489 Total $ 351,069 $ 4,564 $ (330 ) $ 355,303 Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands): March 31, 2020 March 31, 2019 Sales proceeds $ 313 $ — Gross realized gains 10 — Gross realized losses — —
Available-for-sale securities, continuous unrealized loss position, fair value	The following table shows the fair value, gross unrealized losses and the percentage of fair value represented by gross unrealized losses of applicable investment securities owned by the Company, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2020 and December 31, 2019 (in thousands): Less than 12 months 12 months or more Total March 31, 2020 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury — $ — $ — — % — $ — $ — — % — $ — $ — — % Other securities (FHLB, FHLMC and FNMA) — — — — — — — — — — — — State and political subdivisions 381 101,743 (2,460 ) 2.42 9 1,086 (9 ) 0.83 390 102,829 (2,469 ) 2.40 Total temporarily impaired securities 381 $ 101,743 $ (2,460 ) 2.42 % 9 $ 1,086 $ (9 ) 0.83 % 390 $ 102,829 $ (2,469 ) 2.40 % Less than 12 months 12 months or more Total December 31, 2019 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury 11 $ 27,932 $ (136 ) 0.49 % 1 $ 2,495 $ (1 ) 0.04 % 12 $ 30,427 $ (137 ) 0.45 % Other securities (FHLB, FHLMC and FNMA) — — — — 6 15,229 (58 ) 0.38 6 15,229 (58 ) 0.38 State and political subdivisions 66 17,881 (119 ) 0.67 20 3,825 (16 ) 0.42 86 21,706 (135 ) 0.62 Total temporarily impaired securities 77 $ 45,813 $ (255 ) 0.56 % 27 $ 21,549 $ (75 ) 0.35 % 104 $ 67,362 $ (330 ) 0.49 %

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Schedule of classes of loans	Classes of loans are as follows: March 31, December 31, (Amounts In Thousands) Agricultural $ 96,811 $ 91,317 Commercial and financial 228,074 221,323 Real estate: Construction, 1 to 4 family residential 83,445 80,209 Construction, land development and commercial 102,820 108,410 Mortgage, farmland 246,203 242,730 Mortgage, 1 to 4 family first liens 905,951 910,742 Mortgage, 1 to 4 family junior liens 148,444 149,227 Mortgage, multi-family 357,194 350,761 Mortgage, commercial 410,200 402,181 Loans to individuals 31,749 32,308 Obligations of state and political subdivisions 52,917 49,896 $ 2,663,808 $ 2,639,104 Net unamortized fees and costs 931 933 $ 2,664,739 $ 2,640,037 Less allowance for loan losses 38,340 33,760 $ 2,626,399 $ 2,606,277
Schedule of changes in allowance for loan losses	Changes in the allowance for loan losses, the allowance for loan losses applicable to impaired loans and the related loan balance of impaired loans for the three months ended March 31, 2020 were as follows: Three Months Ended March 31, 2020 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 2,400 $ 4,988 $ 2,599 $ 3,950 $ 10,638 $ 7,859 $ 1,326 $ 33,760 Charge-offs (4 ) (15 ) — — (229 ) (2 ) (190 ) (440 ) Recoveries 10 108 2 — 187 14 50 371 Provision 354 1,599 20 146 1,156 1,192 182 4,649 Ending balance $ 2,760 $ 6,680 $ 2,621 $ 4,096 $ 11,752 $ 9,063 $ 1,368 $ 38,340 Ending balance, individually evaluated for impairment $ 217 $ 1,534 $ — $ 3 $ 176 $ — $ 2 $ 1,932 Ending balance, collectively evaluated for impairment $ 2,543 $ 5,146 $ 2,621 $ 4,093 $ 11,576 $ 9,063 $ 1,366 $ 36,408 Loans: Ending balance $ 96,811 $ 228,074 $ 186,265 $ 246,203 $ 1,054,395 $ 767,394 $ 84,666 $ 2,663,808 Ending balance, individually evaluated for impairment $ 1,884 $ 3,853 $ 418 $ 4,130 $ 8,773 $ 3,669 $ 2 $ 22,729 Ending balance, collectively evaluated for impairment $ 94,927 $ 224,221 $ 185,847 $ 242,073 $ 1,045,622 $ 763,725 $ 84,664 $ 2,641,079 Changes in the allowance for loan losses for the three months ended March 31, 2019 were as follows: Three Months Ended March 31, 2019 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 2,789 $ 5,826 $ 3,292 $ 3,972 $ 12,516 $ 8,165 $ 1,250 $ 37,810 Charge-offs — (180 ) (8 ) — (177 ) (4 ) (108 ) (477 ) Recoveries 10 184 2 5 110 85 37 433 Provision (258 ) 174 (358 ) (106 ) (819 ) (23 ) 144 (1,246 ) Ending balance $ 2,541 $ 6,004 $ 2,928 $ 3,871 $ 11,630 $ 8,223 $ 1,323 $ 36,520 Ending balance, individually evaluated for impairment $ 258 $ 1,375 $ — $ — $ 74 $ 483 $ 59 $ 2,249 Ending balance, collectively evaluated for impairment $ 2,283 $ 4,629 $ 2,928 $ 3,871 $ 11,556 $ 7,740 $ 1,264 $ 34,271 Loans: Ending balance $ 93,573 $ 227,403 $ 179,334 $ 238,109 $ 1,068,591 $ 753,163 $ 82,892 $ 2,643,065 Ending balance, individually evaluated for impairment $ 2,740 $ 4,039 $ 832 $ 4,189 $ 6,879 $ 4,333 $ 59 $ 23,071 Ending balance, collectively evaluated for impairment $ 90,833 $ 223,364 $ 178,502 $ 233,920 $ 1,061,712 $ 748,830 $ 82,833 $ 2,619,994
Schedule of credit quality indicators by type of loans	The following table presents the credit quality indicators by type of loans in each category as of March 31, 2020 and December 31, 2019 , respectively (amounts in thousands): Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial March 31, 2020 Grade: Excellent $ 3,710 $ 3,517 $ — $ 241 Good 14,405 46,648 9,646 15,969 Satisfactory 45,924 122,917 53,520 48,413 Monitor 26,066 44,584 18,506 30,190 Special Mention 3,606 6,438 747 7,218 Substandard 3,100 3,970 1,026 789 Total $ 96,811 $ 228,074 $ 83,445 $ 102,820 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family March 31, 2020 Grade: Excellent $ 6,837 $ 2,732 $ 262 $ 18,974 Good 37,941 32,019 4,086 51,338 Satisfactory 136,433 742,836 135,444 191,849 Monitor 53,050 101,037 5,494 61,677 Special Mention 3,971 10,534 1,341 27,361 Substandard 7,971 16,793 1,817 5,995 Total $ 246,203 $ 905,951 $ 148,444 $ 357,194 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total March 31, 2020 Grade: Excellent $ 26,494 $ — $ 7,313 $ 70,080 Good 81,334 199 14,266 307,851 Satisfactory 214,053 30,871 23,158 1,745,418 Monitor 80,061 387 7,795 428,847 Special Mention 4,967 235 385 66,803 Substandard 3,291 57 — 44,809 Total $ 410,200 $ 31,749 $ 52,917 $ 2,663,808 Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial December 31, 2019 Grade: Excellent $ 3,594 $ 3,461 $ 260 $ 190 Good 12,380 47,843 8,868 23,217 Satisfactory 43,308 117,114 51,093 47,987 Monitor 24,857 44,543 17,505 29,009 Special Mention 3,110 5,157 2,483 7,428 Substandard 4,068 3,205 — 579 Total $ 91,317 $ 221,323 $ 80,209 $ 108,410 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family December 31, 2019 Grade: Excellent $ 3,630 $ 3,209 $ 261 $ 18,955 Good 40,118 32,474 4,233 47,871 Satisfactory 134,738 751,215 136,079 189,391 Monitor 53,147 96,353 5,473 60,965 Special Mention 3,033 11,167 1,469 27,559 Substandard 8,064 16,324 1,712 6,020 Total $ 242,730 $ 910,742 $ 149,227 $ 350,761 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total December 31, 2019 Grade: Excellent $ 27,017 $ — $ 7,444 $ 68,021 Good 79,467 221 14,465 311,157 Satisfactory 206,196 31,385 20,274 1,728,780 Monitor 81,381 437 7,323 420,993 Special Mention 4,802 212 390 66,810 Substandard 3,318 53 — 43,343 Total $ 402,181 $ 32,308 $ 49,896 $ 2,639,104
Schedule of past due loans	Past due loans as of March 31, 2020 and December 31, 2019 were as follows: 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Accruing Loans Past Due 90 Days or More (Amounts In Thousands) March 31, 2020 Agricultural $ 1,655 $ 463 $ 316 $ 2,434 $ 94,377 $ 96,811 $ 20 Commercial and financial 2,296 459 256 3,011 225,063 228,074 176 Real estate: Construction, 1 to 4 family residential 3,555 190 — 3,745 79,700 83,445 — Construction, land development and commercial 1,464 240 — 1,704 101,116 102,820 — Mortgage, farmland 3,992 112 953 5,057 241,146 246,203 161 Mortgage, 1 to 4 family first liens 9,148 250 4,479 13,877 892,074 905,951 528 Mortgage, 1 to 4 family junior liens 855 101 149 1,105 147,339 148,444 — Mortgage, multi-family — 95 — 95 357,099 357,194 — Mortgage, commercial 1,162 855 — 2,017 408,183 410,200 — Loans to individuals 226 90 16 332 31,417 31,749 — Obligations of state and political subdivisions — — — — 52,917 52,917 — $ 24,353 $ 2,855 $ 6,169 $ 33,377 $ 2,630,431 $ 2,663,808 $ 885 December 31, 2019 Agricultural $ 163 $ 275 $ 122 $ 560 $ 90,757 $ 91,317 $ 48 Commercial and financial 1,076 229 101 1,406 219,917 221,323 65 Real estate: Construction, 1 to 4 family residential 635 — — 635 79,574 80,209 — Construction, land development and commercial 215 101 — 316 108,094 108,410 — Mortgage, farmland 736 — 610 1,346 241,384 242,730 — Mortgage, 1 to 4 family first liens 5,026 3,100 4,149 12,275 898,467 910,742 354 Mortgage, 1 to 4 family junior liens 813 126 233 1,172 148,055 149,227 139 Mortgage, multi-family — 97 — 97 350,664 350,761 — Mortgage, commercial 321 489 — 810 401,371 402,181 — Loans to individuals 226 55 15 296 32,012 32,308 — Obligations of state and political subdivisions — — — — 49,896 49,896 — $ 9,211 $ 4,472 $ 5,230 $ 18,913 $ 2,620,191 $ 2,639,104 $ 606
Schedule of impaired loan information	Certain impaired loan information by loan type at March 31, 2020 and December 31, 2019 , was as follows: March 31, 2020 December 31, 2019 Non-accrual loans (1) Accruing loans past due 90 days or more TDR loans Non- accrual loans (1) Accruing loans past due 90 days or more TDR loans (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 1,356 $ 20 $ 425 $ 1,192 $ 48 $ 404 Commercial and financial 1,295 176 1,859 679 65 1,934 Real estate: Construction, 1 to 4 family residential — — — — — — Construction, land development and commercial — — 319 — — 320 Mortgage, farmland 1,288 161 2,681 1,369 — 2,712 Mortgage, 1 to 4 family first liens 6,489 528 1,615 6,558 354 1,626 Mortgage, 1 to 4 family junior liens 240 — — 94 139 — Mortgage, multi-family 95 — 1,709 97 — 1,719 Mortgage, commercial 1,286 — 579 779 — 593 $ 12,049 $ 885 $ 9,187 $ 10,768 $ 606 $ 9,308 (1) There were $4.99 million and $4.34 million of TDR loans included within nonaccrual loans as of March 31, 2020 and December 31, 2019 , respectively.
Schedule of information for TDR loans	Below is a summary of information for TDR loans as of March 31, 2020 and December 31, 2019 : March 31, 2020 December 31, 2019 Number of contracts Recorded investment Commitments outstanding Number of contracts Recorded investment Commitments outstanding (Amounts In Thousands) (Amounts In Thousands) Agricultural 11 $ 1,559 $ — 9 $ 1,552 $ 3 Commercial and financial 17 2,685 85 16 2,641 95 Real estate: Construction, 1 to 4 family residential — — — — — — Construction, land development and commercial 2 319 — 2 320 — Mortgage, farmland 8 3,969 — 8 4,021 — Mortgage, 1 to 4 family first liens 16 2,067 — 16 2,083 — Mortgage, 1 to 4 family junior liens — — — — — — Mortgage, multi-family 2 1,709 — 2 1,719 — Mortgage, commercial 8 1,865 — 7 1,373 — Loans to individuals — — — — — — 64 $ 14,173 $ 85 60 $ 13,709 $ 98 The following is a summary of TDR loans that were modified during the three months ended March 31, 2020 : Three Months Ended March 31, 2020 Number of contracts Pre-modification recorded investment Post-modification recorded investment Agricultural 2 $ 93 $ 93 Commercial and financial 1 199 199 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland — — — Mortgage, 1 to 4 family first lien — — — Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 1 513 513 4 $ 805 $ 805
Schedule of impaired loans	Information regarding impaired loans as of and for the three months ended March 31, 2020 is as follows: March 31, 2020 Three Months Ended Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: (Amounts In Thousands) Agricultural $ 1,584 $ 2,251 $ — $ 1,688 $ 6 Commercial and financial 1,303 2,177 — 1,371 12 Real estate: Construction, 1 to 4 family residential 99 144 — 100 — Construction, land development and commercial 319 334 — 320 4 Mortgage, farmland 3,969 4,496 — 3,995 39 Mortgage, 1 to 4 family first liens 6,838 8,630 — 6,896 18 Mortgage, 1 to 4 family junior liens 95 339 — 94 — Mortgage, multi-family 1,804 1,921 — 1,810 20 Mortgage, commercial 1,865 2,415 — 1,876 7 Loans to individuals — 14 — — — $ 17,876 $ 22,721 $ — $ 18,150 $ 106 With an allowance recorded: Agricultural $ 300 $ 300 $ 217 $ 300 $ 1 Commercial and financial 2,550 2,718 1,534 2,421 23 Real estate: Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — — — — Mortgage, farmland 161 161 3 161 3 Mortgage, 1 to 4 family first liens 1,695 1,962 126 1,730 9 Mortgage, 1 to 4 family junior liens 145 146 50 147 — Mortgage, multi-family — — — — — Mortgage, commercial — — — — — Loans to individuals 2 2 2 2 — $ 4,853 $ 5,289 $ 1,932 $ 4,761 $ 36 Total: Agricultural $ 1,884 $ 2,551 $ 217 $ 1,988 $ 7 Commercial and financial 3,853 4,895 1,534 3,792 35 Real estate: Construction, 1 to 4 family residential 99 144 — 100 — Construction, land development and commercial 319 334 — 320 4 Mortgage, farmland 4,130 4,657 3 4,156 42 Mortgage, 1 to 4 family first liens 8,533 10,592 126 8,626 27 Mortgage, 1 to 4 family junior liens 240 485 50 241 — Mortgage, multi-family 1,804 1,921 — 1,810 20 Mortgage, commercial 1,865 2,415 — 1,876 7 Loans to individuals 2 16 2 2 — $ 22,729 $ 28,010 $ 1,932 $ 22,911 $ 142 Information regarding impaired loans as of December 31, 2019 is as follows: Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: (Amounts In Thousands) Agricultural $ 1,596 $ 2,157 $ — Commercial and financial 1,340 2,220 — Real estate: Construction, 1 to 4 family residential 101 144 — Construction, land development and commercial 320 336 — Mortgage, farmland 4,081 4,613 — Mortgage, 1 to 4 family first liens 7,157 9,015 — Mortgage, 1 to 4 family junior liens — 246 — Mortgage, multi-family 1,816 1,930 — Mortgage, commercial 1,302 1,852 — Loans to individuals — 14 — $ 17,713 $ 22,527 $ — With an allowance recorded: Agricultural $ 134 $ 134 $ 87 Commercial and financial 1,402 1,539 792 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland — — — Mortgage, 1 to 4 family first liens 1,280 1,501 64 Mortgage, 1 to 4 family junior liens 233 233 47 Mortgage, multi-family — — — Mortgage, commercial 70 70 1 Loans to individuals 93 93 93 $ 3,212 $ 3,570 $ 1,084 Total: Agricultural $ 1,730 $ 2,291 $ 87 Commercial and financial 2,742 3,759 792 Real estate: Construction, 1 to 4 family residential 101 144 — Construction, land development and commercial 320 336 — Mortgage, farmland 4,081 4,613 — Mortgage, 1 to 4 family first liens 8,437 10,516 64 Mortgage, 1 to 4 family junior liens 233 479 47 Mortgage, multi-family 1,816 1,930 — Mortgage, commercial 1,372 1,922 1 Loans to individuals 93 107 93 $ 20,925 $ 26,097 $ 1,084

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Maturities of lease liabilities, Topic 842	As of March 31, 2020, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2020 $ 352 2021 456 2022 448 2023 301 2024 250 Thereafter 2,009 Total lease payments 3,816 Less imputed interest (679 ) Total operating lease liabilities $ 3,137

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Carrying value and estimated fair values of entity's financial instruments	The carrying value and estimated fair values of the Company's financial instruments as of March 31, 2020 are as follows: March 31, 2020 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 268,293 $ 268,293 $ 268,293 $ — $ — Investment securities 383,213 383,213 148,740 234,473 — Loans held for sale 11,592 11,592 — 11,592 — Loans Agricultural 94,051 94,325 — — 94,325 Commercial and financial 221,394 222,339 — — 222,339 Real estate: Construction, 1 to 4 family residential 82,255 82,626 — — 82,626 Construction, land development and commercial 101,389 100,695 — — 100,695 Mortgage, farmland 242,107 240,554 — — 240,554 Mortgage, 1 to 4 family first liens 896,775 887,278 — — 887,278 Mortgage, 1 to 4 family junior liens 146,799 142,083 — — 142,083 Mortgage, multi-family 352,986 353,963 — — 353,963 Mortgage, commercial 405,345 402,564 — — 402,564 Loans to individuals 30,984 32,244 — — 32,244 Obligations of state and political subdivisions 52,314 52,850 — — 52,850 Accrued interest receivable 13,691 13,691 — 13,691 — Total financial instrument assets $ 3,303,188 $ 3,288,310 $ 417,033 $ 259,756 $ 2,611,521 Financial instrument liabilities Deposits Noninterest-bearing deposits $ 381,171 $ 381,171 $ — $ 381,171 $ — Interest-bearing deposits 2,350,543 2,370,184 — 2,370,184 — Federal Home Loan Bank borrowings 185,000 186,018 — 186,018 — Interest rate swaps 3,447 3,447 — 3,447 — Accrued interest payable 2,352 2,352 — 2,352 — Total financial instrument liabilities $ 2,922,513 $ 2,943,172 $ — $ 2,943,172 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 479,581 $ — $ — $ — $ — Letters of credit 8,447 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 488,028 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. The carrying value and estimated fair values of the Company's financial instruments as of December 31, 2019 are as follows: December 31, 2019 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 241,965 $ 241,965 $ 241,965 $ — $ — Investment securities 366,368 366,368 128,585 237,783 — Loans held for sale 8,400 8,400 — 8,400 — Loans Agricultural 88,917 90,118 — — 90,118 Commercial and financial 216,335 217,640 — — 217,640 Real estate: Construction, 1 to 4 family residential 79,096 79,954 — — 79,954 Construction, land development and commercial 106,924 107,276 — — 107,276 Mortgage, farmland 238,780 239,521 — — 239,521 Mortgage, 1 to 4 family first liens 902,630 896,676 — — 896,676 Mortgage, 1 to 4 family junior liens 147,634 143,261 — — 143,261 Mortgage, multi-family 346,938 349,663 — — 349,663 Mortgage, commercial 398,145 395,838 — — 395,838 Loans to individuals 31,455 32,722 — — 32,722 Obligations of state and political subdivisions 49,423 50,564 — — 50,564 Accrued interest receivable 12,442 12,442 — 12,442 — Total financial instrument assets $ 3,235,452 $ 3,232,408 $ 370,550 $ 258,625 $ 2,603,233 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 387,612 $ 387,612 $ — $ 387,612 $ — Interest-bearing deposits 2,273,752 2,292,332 — 2,292,332 — Federal Home Loan Bank borrowings 185,000 186,091 — 186,091 — Interest rate swaps 2,349 2,349 2,349 Accrued interest payable 2,474 2,474 — 2,474 — Total financial instrument liabilities $ 2,851,187 $ 2,870,858 $ — $ 2,870,858 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 424,165 $ — $ — $ — $ — Letters of credit 8,569 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 432,734 $ — $ — $ — $ — (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
Schedule of assets and liabilities measured at fair value on a recurring basis	The table below represents the balances of assets and liabilities measured at fair value on a recurring basis: March 31, 2020 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ 148,740 $ — $ — $ 148,740 State and political subdivisions — 210,273 — 210,273 Other securities (FHLB, FHLMC and FNMA) — 12,826 — 12,826 Derivative Financial Instruments Interest rate swaps $ — (3,447 ) $ — (3,447 ) Total $ 148,740 $ 219,652 $ — $ 368,392 December 31, 2019 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ 128,585 $ — $ — $ 128,585 State and political subdivisions — 211,489 — 211,489 Other securities (FHLB, FHLMC and FNMA) — 15,229 — 15,229 Derivative Financial Instruments Interest rate swaps — (2,349 ) — (2,349 ) Total $ 128,585 $ 224,369 $ — $ 352,954 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
Schedule of assets measured at fair value on a nonrecurring basis	The following tables present the Company’s assets that are measured at fair value on a nonrecurring basis. March 31, 2020 Three Months Ended March 31, 2020 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,371 $ 1,371 $ — Commercial and financial — — 2,099 2,099 — Real Estate: — Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — 215 215 — Mortgage, farmland — — 3,464 3,464 — Mortgage, 1 to 4 family first liens — — 7,850 7,850 93 Mortgage, 1 to 4 family junior liens — — 189 189 — Mortgage, multi-family — — 1,804 1,804 — Mortgage, commercial — — 1,732 1,732 — Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 18,724 $ 18,724 $ 93 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero . (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (continued) December 31, 2019 Year Ended December 31, 2019 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,272 $ 1,272 $ 36 Commercial and financial — — 1,803 1,803 499 Real Estate: Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — 215 215 8 Mortgage, farmland — — 3,576 3,576 — Mortgage, 1 to 4 family first liens — — 7,986 7,986 370 Mortgage, 1 to 4 family junior liens — — 49 49 — Mortgage, multi-family — — 1,816 1,816 — Mortgage, commercial — — 1,237 1,237 125 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 17,954 $ 17,954 $ 1,038 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of banks commitments	A summary of the Bank’s commitments at March 31, 2020 and December 31, 2019 is as follows: March 31, 2020 December 31, 2019 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 69,940 $ 65,203 Credit cards 59,848 57,421 Commercial, real estate and home construction 114,387 94,490 Commercial lines and real estate purchase loans 235,406 207,051 Outstanding letters of credit 8,447 8,569

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Identification of the balance sheet category and fair values of the derivative instruments designated as cash flow hedges	The table below identifies the balance sheet category and fair values of the Bank’s derivative instruments designated as cash flow hedges as of March 31, 2020 and December 31, 2019 : Notional Amount Fair Value Balance Sheet Category Maturity (Amounts in Thousands) March 31, 2020 Interest rate swap $ 25,000 $ (357 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (3,090 ) Other Liabilities 11/7/2023 December 31, 2019 Interest rate swap $ 25,000 $ (279 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (2,070 ) Other Liabilities 11/7/2023
Identification of the gains and losses recognized on the derivative instruments designated as cash flow hedges	The table below identifies the gains and losses recognized on the Bank’s derivative instruments designated as cash flow hedges for the three months ended March 31, 2020 and year ended December 31, 2019 : Recognized in OCI Reclassified from AOCI into Income Recognized in Income on Derivatives Amount of Gain (Loss) Category Amount of Gain (Loss) Category Amount of Gain (Loss) (Amounts in Thousands) March 31, 2020 Interest rate swap $ (58 ) Interest Expense $ — Other Income $ — Interest rate swap (766 ) Interest Expense — Other Income — December 31, 2019 Interest rate swap $ (119 ) Interest Expense $ — Other Income $ — Interest rate swap (446 ) Interest Expense — Other Income —

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Thousands	Apr. 01, 2020USD ($)	Mar. 31, 2020USD ($)segment	Dec. 31, 2019USD ($)	Mar. 31, 2019USD ($)	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment		1
Estimated allowance for credit losses (ACL)		$ 38,340	$ 33,760	$ 36,520		$ 37,810
Operating lease, right-of-use asset		$ 3,110	$ 3,200
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Additional operating liabilities					$ 3,580
Operating lease, right-of-use asset					$ 3,580
Cumulative Effective, Period Of Adoption, Estimated Adjustment [Member] | Minimum [Member] | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated overall increase in Allowance for Credit Losses (ACL) for loans	$ 3,000
Anticipated unfunded commitments liability	1,000
Cumulative Effective, Period Of Adoption, Estimated Adjustment [Member] | Maximum [Member] | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated overall increase in Allowance for Credit Losses (ACL) for loans	4,000
Anticipated unfunded commitments liability	2,000
Cumulative Effective, Period Of Adoption, Estimated Finalized Adjustment [Member] | Minimum [Member] | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Anticipated unfunded commitments liability	4,000
Estimated allowance for credit losses (ACL)	41,000
Cumulative Effective, Period Of Adoption, Estimated Finalized Adjustment [Member] | Maximum [Member] | Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Anticipated unfunded commitments liability	5,000
Estimated allowance for credit losses (ACL)	$ 44,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Summary of computation of basic and diluted earnings per share [Abstract]
Common shares outstanding at the beginning of the period (shares)			9,351,694	9,336,441
Weighted average number of net shares (redeemed) issued (shares)	46,232	30,816
Weighted average shares outstanding (basic) (shares)	9,397,926	9,367,257
Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method (shares)	3,754	4,008
Weighted average number of shares (diluted) (shares)	9,401,680	9,371,265
Net income (In thousands)	$ 7,075	$ 11,203
Earnings per share:
Basic (in dollars per share)	$ 0.75	$ 1.20
Diluted (in dollars per share)	$ 0.75	$ 1.20

Other Comprehensive Income (Det

Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Tax effect	$ (335)	$ (470)
Net-of-tax amount	1,006	1,415
Net unrealized loss on available-for-sale securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Net unrealized gain (loss)	4,788	4,234
Net unrealized loss on derivatives used for cash flow hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Net unrealized gain (loss)	$ (3,447)	$ (2,349)

Securities (Details)

Securities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)security	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)security
Securities available for sale
Securities available for sale, Percent	100.00%		100.00%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 367,051		$ 351,069
Gross Unrealized Gains	7,257		4,564
Gross Unrealized (Losses)	(2,469)		(330)
Amortized Cost
Due in one year or less	65,163
Due after one year through five years	206,921
Due after five years through ten years	82,468
Due over ten years	12,499
Fair Value
Due in one year or less	65,416
Due after one year through five years	212,657
Due after five years through ten years	81,957
Due over ten years	11,809
Carrying value of investment securities pledged to collateralize short-term borrowings	371,839		$ 355,303
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Sales proceeds	313	$ 0
Gross realized gains	10	0
Gross realized losses	$ 0	$ 0
Less than 12 months
Number of securities | security	381		77
Fair Value	$ 101,743		$ 45,813
Unrealized Loss	$ (2,460)		$ (255)
Percentage	2.42%		0.56%
12 months or more
Number of securities | security	9		27
Fair Value	$ 1,086		$ 21,549
Unrealized Loss	$ (9)		$ (75)
Percentage	0.83%		0.35%
Total
Number of securities | security	390		104
Fair Value	$ 102,829		$ 67,362
Unrealized Loss	$ (2,469)		$ (330)
Percentage	2.40%		0.49%
Collateralized Securities [Member]
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 13,510
U.S. Treasury [Member]
Securities available for sale
Securities available for sale, Percent	40.00%		36.19%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 142,669		$ 127,096
Gross Unrealized Gains	6,071		1,626
Gross Unrealized (Losses)	0		(137)
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 148,740		$ 128,585
Less than 12 months
Number of securities | security	0		11
Fair Value	$ 0		$ 27,932
Unrealized Loss	$ 0		$ (136)
Percentage	0.00%		0.49%
12 months or more
Number of securities | security	0		1
Fair Value	$ 0		$ 2,495
Unrealized Loss	$ 0		$ (1)
Percentage	0.00%		0.04%
Total
Number of securities | security	0		12
Fair Value	$ 0		$ 30,427
Unrealized Loss	$ 0		$ (137)
Percentage	0.00%		0.45%
Other securities [Member]
Securities available for sale
Securities available for sale, Percent	3.45%		4.29%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 12,775		$ 15,287
Gross Unrealized Gains	51		0
Gross Unrealized (Losses)	0		(58)
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 12,826		$ 15,229
Less than 12 months
Number of securities | security	0		0
Fair Value	$ 0		$ 0
Unrealized Loss	$ 0		$ 0
Percentage	0.00%		0.00%
12 months or more
Number of securities | security	0		6
Fair Value	$ 0		$ 15,229
Unrealized Loss	$ 0		$ (58)
Percentage	0.00%		0.38%
Total
Number of securities | security	0		6
Fair Value	$ 0		$ 15,229
Unrealized Loss	$ 0		$ (58)
Percentage	0.00%		0.38%
State and political subdivisions [Member]
Securities available for sale
Securities available for sale, Percent	56.55%		59.52%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 211,607		$ 208,686
Gross Unrealized Gains	1,135		2,938
Gross Unrealized (Losses)	(2,469)		(135)
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 210,273		$ 211,489
Less than 12 months
Number of securities | security	381		66
Fair Value	$ 101,743		$ 17,881
Unrealized Loss	$ (2,460)		$ (119)
Percentage	2.42%		0.67%
12 months or more
Number of securities | security	9		20
Fair Value	$ 1,086		$ 3,825
Unrealized Loss	$ (9)		$ (16)
Percentage	0.83%		0.42%
Total
Number of securities | security	390		86
Fair Value	$ 102,829		$ 21,706
Unrealized Loss	$ (2,469)		$ (135)
Percentage	2.40%		0.62%

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
(Increase) Decrease in TDR Loans	$ 120
Summary of classes of loans (abstract)
Loans and receivable	2,663,808	$ 2,639,104	$ 2,643,065
Net unamortized fees and costs	931	933
Loans and receivable, gross	2,664,739	2,640,037
Less allowance for loan losses	38,340	33,760
Loans and receivable, net	2,626,399	2,606,277
Financing Receivable, Recorded Investment, Increase (Decrease) Nonaccrual Status	1,280
Agricultural [Member]
Summary of classes of loans (abstract)
Loans and receivable	96,811	91,317	93,573
Commercial and financial [Member]
Summary of classes of loans (abstract)
Loans and receivable	228,074	221,323	227,403
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of classes of loans (abstract)
Loans and receivable	83,445	80,209
Real Estate: Construction, land development and commercial [Member]
Summary of classes of loans (abstract)
Loans and receivable	102,820	108,410
Real Estate: Mortgage, farmland [Member]
Summary of classes of loans (abstract)
Loans and receivable	246,203	242,730	$ 238,109
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of classes of loans (abstract)
Loans and receivable	905,951	910,742
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of classes of loans (abstract)
Loans and receivable	148,444	149,227
Real Estate: Mortgage, multi-family [Member]
Summary of classes of loans (abstract)
Loans and receivable	357,194	350,761
Real Estate: Mortgage, commercial [Member]
Summary of classes of loans (abstract)
Loans and receivable	410,200	402,181
Loans to individuals [Member]
Summary of classes of loans (abstract)
Loans and receivable	31,749	32,308
Obligations of state and political subdivisions [Member]
Summary of classes of loans (abstract)
Loans and receivable	$ 52,917	$ 49,896

Loans, Allowance For Credit Los

Loans, Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 33,760	$ 37,810
Charge-offs	(440)	(477)
Recoveries	371	433
Provision	4,649	(1,246)
Ending balance	38,340	36,520
Ending balance, individually evaluated for impairment	1,932	2,249
Ending balance, collectively evaluated for impairment	36,408	34,271
Loan [Abstract]
Total Loans Receivable	2,663,808	2,643,065	$ 2,639,104
Ending balance, individually evaluated for impairment	22,729	23,071
Ending balance, collectively evaluated for impairment	2,641,079	2,619,994
Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,400	2,789
Charge-offs	(4)	0
Recoveries	10	10
Provision	354	(258)
Ending balance	2,760	2,541
Ending balance, individually evaluated for impairment	217	258
Ending balance, collectively evaluated for impairment	2,543	2,283
Loan [Abstract]
Total Loans Receivable	96,811	93,573	91,317
Ending balance, individually evaluated for impairment	1,884	2,740
Ending balance, collectively evaluated for impairment	94,927	90,833
Commercial and Financial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	4,988	5,826
Charge-offs	(15)	(180)
Recoveries	108	184
Provision	1,599	174
Ending balance	6,680	6,004
Ending balance, individually evaluated for impairment	1,534	1,375
Ending balance, collectively evaluated for impairment	5,146	4,629
Loan [Abstract]
Total Loans Receivable	228,074	227,403	221,323
Ending balance, individually evaluated for impairment	3,853	4,039
Ending balance, collectively evaluated for impairment	224,221	223,364
Real Estate: Construction and land development [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,599	3,292
Charge-offs	0	(8)
Recoveries	2	2
Provision	20	(358)
Ending balance	2,621	2,928
Ending balance, individually evaluated for impairment	0	0
Ending balance, collectively evaluated for impairment	2,621	2,928
Loan [Abstract]
Total Loans Receivable	186,265	179,334
Ending balance, individually evaluated for impairment	418	832
Ending balance, collectively evaluated for impairment	185,847	178,502
Real Estate: Mortgage, farmland [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,950	3,972
Charge-offs	0	0
Recoveries	0	5
Provision	146	(106)
Ending balance	4,096	3,871
Ending balance, individually evaluated for impairment	3	0
Ending balance, collectively evaluated for impairment	4,093	3,871
Loan [Abstract]
Total Loans Receivable	246,203	238,109	$ 242,730
Ending balance, individually evaluated for impairment	4,130	4,189
Ending balance, collectively evaluated for impairment	242,073	233,920
Real Estate: Mortgage, 1 to 4 family [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	10,638	12,516
Charge-offs	(229)	(177)
Recoveries	187	110
Provision	1,156	(819)
Ending balance	11,752	11,630
Ending balance, individually evaluated for impairment	176	74
Ending balance, collectively evaluated for impairment	11,576	11,556
Loan [Abstract]
Total Loans Receivable	1,054,395	1,068,591
Ending balance, individually evaluated for impairment	8,773	6,879
Ending balance, collectively evaluated for impairment	1,045,622	1,061,712
Real Estate: Mortgage, multi-family and commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	7,859	8,165
Charge-offs	(2)	(4)
Recoveries	14	85
Provision	1,192	(23)
Ending balance	9,063	8,223
Ending balance, individually evaluated for impairment	0	483
Ending balance, collectively evaluated for impairment	9,063	7,740
Loan [Abstract]
Total Loans Receivable	767,394	753,163
Ending balance, individually evaluated for impairment	3,669	4,333
Ending balance, collectively evaluated for impairment	763,725	748,830
Others [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,326	1,250
Charge-offs	(190)	(108)
Recoveries	50	37
Provision	182	144
Ending balance	1,368	1,323
Ending balance, individually evaluated for impairment	2	59
Ending balance, collectively evaluated for impairment	1,366	1,264
Loan [Abstract]
Total Loans Receivable	84,666	82,892
Ending balance, individually evaluated for impairment	2	59
Ending balance, collectively evaluated for impairment	$ 84,664	$ 82,833

Loans, Credit Quality Indicator

Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	$ 2,663,808	$ 2,639,104	$ 2,643,065
Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	70,080	68,021
Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	307,851	311,157
Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,745,418	1,728,780
Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	428,847	420,993
Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	66,803	66,810
Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	44,809	43,343
Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	96,811	91,317	93,573
Agricultural [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,710	3,594
Agricultural [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	14,405	12,380
Agricultural [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	45,924	43,308
Agricultural [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	26,066	24,857
Agricultural [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,606	3,110
Agricultural [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,100	4,068
Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	228,074	221,323	227,403
Commercial and Financial [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,517	3,461
Commercial and Financial [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	46,648	47,843
Commercial and Financial [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	122,917	117,114
Commercial and Financial [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	44,584	44,543
Commercial and Financial [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	6,438	5,157
Commercial and Financial [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,970	3,205
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	83,445	80,209
Real Estate: Construction, 1 to 4 family residential [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	0	260
Real Estate: Construction, 1 to 4 family residential [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	9,646	8,868
Real Estate: Construction, 1 to 4 family residential [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	53,520	51,093
Real Estate: Construction, 1 to 4 family residential [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	18,506	17,505
Real Estate: Construction, 1 to 4 family residential [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	747	2,483
Real Estate: Construction, 1 to 4 family residential [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,026	0
Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	102,820	108,410
Real Estate: Construction, land development and commercial [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	241	190
Real Estate: Construction, land development and commercial [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	15,969	23,217
Real Estate: Construction, land development and commercial [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	48,413	47,987
Real Estate: Construction, land development and commercial [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	30,190	29,009
Real Estate: Construction, land development and commercial [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	7,218	7,428
Real Estate: Construction, land development and commercial [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	789	579
Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	246,203	242,730	$ 238,109
Real Estate: Mortgage, farmland [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	6,837	3,630
Real Estate: Mortgage, farmland [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	37,941	40,118
Real Estate: Mortgage, farmland [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	136,433	134,738
Real Estate: Mortgage, farmland [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	53,050	53,147
Real Estate: Mortgage, farmland [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,971	3,033
Real Estate: Mortgage, farmland [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	7,971	8,064
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	905,951	910,742
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	2,732	3,209
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	32,019	32,474
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	742,836	751,215
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	101,037	96,353
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	10,534	11,167
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	16,793	16,324
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	148,444	149,227
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	262	261
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	4,086	4,233
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	135,444	136,079
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	5,494	5,473
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,341	1,469
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,817	1,712
Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	357,194	350,761
Real Estate: Mortgage, multi-family [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	18,974	18,955
Real Estate: Mortgage, multi-family [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	51,338	47,871
Real Estate: Mortgage, multi-family [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	191,849	189,391
Real Estate: Mortgage, multi-family [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	61,677	60,965
Real Estate: Mortgage, multi-family [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	27,361	27,559
Real Estate: Mortgage, multi-family [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	5,995	6,020
Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	410,200	402,181
Real Estate: Mortgage, commercial [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	26,494	27,017
Real Estate: Mortgage, commercial [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	81,334	79,467
Real Estate: Mortgage, commercial [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	214,053	206,196
Real Estate: Mortgage, commercial [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	80,061	81,381
Real Estate: Mortgage, commercial [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	4,967	4,802
Real Estate: Mortgage, commercial [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,291	3,318
Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	31,749	32,308
Loans to individuals [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	0	0
Loans to individuals [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	199	221
Loans to individuals [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	30,871	31,385
Loans to individuals [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	387	437
Loans to individuals [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	235	212
Loans to individuals [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	57	53
Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	52,917	49,896
Obligations of state and political subdivisions [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	7,313	7,444
Obligations of state and political subdivisions [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	14,266	14,465
Obligations of state and political subdivisions [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	23,158	20,274
Obligations of state and political subdivisions [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	7,795	7,323
Obligations of state and political subdivisions [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	385	390
Obligations of state and political subdivisions [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	$ 0	$ 0

Loans, Past Due Receivables (De

Loans, Past Due Receivables (Details) $ in Thousands	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Mar. 31, 2019USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of accruing loans past due 90 days or more	15	8
Schedule of past due loans [Abstract]
Total Past Due	$ 33,377	$ 18,913
Current	2,630,431	2,620,191
Total Loans Receivable	2,663,808	2,639,104	$ 2,643,065
Accruing Loans Past Due 90 Days or More	885	606
Agricultural [Member]
Schedule of past due loans [Abstract]
Total Past Due	2,434	560
Current	94,377	90,757
Total Loans Receivable	96,811	91,317	93,573
Accruing Loans Past Due 90 Days or More	20	48
Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Total Past Due	3,011	1,406
Current	225,063	219,917
Total Loans Receivable	228,074	221,323	227,403
Accruing Loans Past Due 90 Days or More	176	65
Real Estate: Construction, 1 to 4 family residential [Member]
Schedule of past due loans [Abstract]
Total Past Due	3,745	635
Current	79,700	79,574
Total Loans Receivable	83,445	80,209
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	1,704	316
Current	101,116	108,094
Total Loans Receivable	102,820	108,410
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Total Past Due	5,057	1,346
Current	241,146	241,384
Total Loans Receivable	246,203	242,730	$ 238,109
Accruing Loans Past Due 90 Days or More	161	0
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	13,877	12,275
Current	892,074	898,467
Total Loans Receivable	905,951	910,742
Accruing Loans Past Due 90 Days or More	528	354
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	1,105	1,172
Current	147,339	148,055
Total Loans Receivable	148,444	149,227
Accruing Loans Past Due 90 Days or More	0	139
Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Total Past Due	95	97
Current	357,099	350,664
Total Loans Receivable	357,194	350,761
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	2,017	810
Current	408,183	401,371
Total Loans Receivable	410,200	402,181
Accruing Loans Past Due 90 Days or More	0	0
Loans to individuals [Member]
Schedule of past due loans [Abstract]
Total Past Due	332	296
Current	31,417	32,012
Total Loans Receivable	31,749	32,308
Accruing Loans Past Due 90 Days or More	0	0
State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
Current	52,917	49,896
Total Loans Receivable	52,917	49,896
Accruing Loans Past Due 90 Days or More	0	0
30 - 59 Days Past Due [Member]
Schedule of past due loans [Abstract]
Total Past Due	24,353	9,211
30 - 59 Days Past Due [Member] | Agricultural [Member]
Schedule of past due loans [Abstract]
Total Past Due	1,655	163
30 - 59 Days Past Due [Member] | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Total Past Due	2,296	1,076
30 - 59 Days Past Due [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Schedule of past due loans [Abstract]
Total Past Due	3,555	635
30 - 59 Days Past Due [Member] | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	1,464	215
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Total Past Due	3,992	736
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	9,148	5,026
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	855	813
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	1,162	321
30 - 59 Days Past Due [Member] | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Total Past Due	226	226
30 - 59 Days Past Due [Member] | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
60 - 89 Days Past Due [Member]
Schedule of past due loans [Abstract]
Total Past Due	2,855	4,472
60 - 89 Days Past Due [Member] | Agricultural [Member]
Schedule of past due loans [Abstract]
Total Past Due	463	275
60 - 89 Days Past Due [Member] | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Total Past Due	459	229
60 - 89 Days Past Due [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Schedule of past due loans [Abstract]
Total Past Due	190	0
60 - 89 Days Past Due [Member] | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	240	101
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Total Past Due	112	0
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	250	3,100
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	101	126
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Total Past Due	95	97
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	855	489
60 - 89 Days Past Due [Member] | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Total Past Due	90	55
60 - 89 Days Past Due [Member] | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
90 Days or More Past Due [Member]
Schedule of past due loans [Abstract]
Total Past Due	6,169	5,230
90 Days or More Past Due [Member] | Agricultural [Member]
Schedule of past due loans [Abstract]
Total Past Due	316	122
90 Days or More Past Due [Member] | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Total Past Due	256	101
90 Days or More Past Due [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
90 Days or More Past Due [Member] | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
90 Days or More Past Due [Member] | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Total Past Due	953	610
90 Days or More Past Due [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	4,479	4,149
90 Days or More Past Due [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Total Past Due	149	233
90 Days or More Past Due [Member] | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
90 Days or More Past Due [Member] | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Total Past Due	0	0
90 Days or More Past Due [Member] | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Total Past Due	16	15
90 Days or More Past Due [Member] | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Total Past Due	$ 0	$ 0

Loans, Impaired Financing Recei

Loans, Impaired Financing Receivable Loan Type (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Summary of certain impaired loan information [Abstract]
Non-accrual loans	$ 12,049	$ 10,768
Accruing loans past due 90 days or more	885	606
TDR loans	9,187	$ 9,308
Increase accruing loans past due 90 days or more	$ 280
Number of accruing loans past due 90 days or more	15	8
Average 90 days or more past due loan balance	$ 60	$ 80
Agricultural [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	1,356	1,192
Accruing loans past due 90 days or more	20	48
TDR loans	425	404
Commercial and financial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	1,295	679
Accruing loans past due 90 days or more	176	65
TDR loans	1,859	1,934
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	0	0
Accruing loans past due 90 days or more	0	0
TDR loans	0	0
Real Estate: Construction, land development and commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	0	0
Accruing loans past due 90 days or more	0	0
TDR loans	319	320
Real Estate: Mortgage, farmland [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	1,288	1,369
Accruing loans past due 90 days or more	161	0
TDR loans	2,681	2,712
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	6,489	6,558
Accruing loans past due 90 days or more	528	354
TDR loans	1,615	1,626
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	240	94
Accruing loans past due 90 days or more	0	139
TDR loans	0	0
Real Estate: Mortgage, multi-family [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	95	97
Accruing loans past due 90 days or more	0	0
TDR loans	1,709	1,719
Real Estate: Mortgage, commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	1,286	779
Accruing loans past due 90 days or more	0	0
TDR loans	579	593
Loans to individuals [Member]
Summary of certain impaired loan information [Abstract]
Accruing loans past due 90 days or more	0	0
Troubled Debt Restructuring [Member]
Summary of certain impaired loan information [Abstract]
TDR Loans included within nonaccrual loans	$ 4,990	$ 4,340

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)loancontract	Dec. 31, 2019USD ($)loancontract
Summary of information for TDR loans [Abstract]
Number of contracts | contract	64	60
Recorded investment	$ 14,173	$ 13,709
Commitments outstanding	$ 85	98
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	4
Pre-modification recorded investment	$ 805
Post-modification recorded investment	805
Commitments to lend additional borrowings	$ 90	$ 100
Number of TDR loans default payment | loan	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 65
Agricultural [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	11	9
Recorded investment	$ 1,559	$ 1,552
Commitments outstanding	$ 0	$ 3
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	2
Pre-modification recorded investment	$ 93
Post-modification recorded investment	$ 93
Commercial and Financial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	17	16
Recorded investment	$ 2,685	$ 2,641
Commitments outstanding	$ 85	$ 95
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 199
Post-modification recorded investment	$ 199
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	0
Recorded investment	$ 0	$ 0
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Construction, land development and commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	2	2
Recorded investment	$ 319	$ 320
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, farmland [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	8	8
Recorded investment	$ 3,969	$ 4,021
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	16	16
Recorded investment	$ 2,067	$ 2,083
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	0
Recorded investment	$ 0	$ 0
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, multi-family [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	2	2
Recorded investment	$ 1,709	$ 1,719
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	8	7
Recorded investment	$ 1,865	$ 1,373
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 513
Post-modification recorded investment	$ 513
Loans to individuals [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	0
Recorded investment	$ 0	$ 0
Commitments outstanding	$ 0	$ 0

Loans, Impaired Financing Rec_2

Loans, Impaired Financing Receivables Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Recorded Investment
With no related allowance recorded	$ 17,876	$ 17,713
With an allowance recorded	4,853	3,212
Total impaired loans	22,729	20,925
Unpaid Principal Balance
With no related allowance recorded	22,721	22,527
With an allowance recorded	5,289	3,570
Total	28,010	26,097
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	1,932	1,084
Total	1,932	$ 1,084
Average Recorded Investment
With no related allowance recorded	18,150
With an allowance recorded	4,761
Total	22,911
Interest Income Recognized
With no related allowance recorded	106
With an allowance recorded	36
Total	142
Increase in impaired loans	$ 1,800
Percentages of impaired loans to loans held for investment (in hundredths)	0.85%	0.79%
Increase in nonaccrual loans	$ 1,280
Decrease in TDR loans	120
Increase (Decrease) accruing loans past days or more financing receivable unpaid principal balance	$ 280
Prior period within which impairment is being measured	1 year
Number of period within which average appraisals obtained	1 month
Agricultural and Farmland Real Estate [Member]
Interest Income Recognized
Increase in impaired loans	$ 430
Agricultural [Member]
Recorded Investment
With no related allowance recorded	1,584	$ 1,596
With an allowance recorded	300	134
Total impaired loans	1,884	1,730
Unpaid Principal Balance
With no related allowance recorded	2,251	2,157
With an allowance recorded	300	134
Total	2,551	2,291
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	217	87
Total	217	87
Average Recorded Investment
With no related allowance recorded	1,688
With an allowance recorded	300
Total	1,988
Interest Income Recognized
With no related allowance recorded	6
With an allowance recorded	1
Total	7
Commercial and Financial [Member]
Recorded Investment
With no related allowance recorded	1,303	1,340
With an allowance recorded	2,550	1,402
Total impaired loans	3,853	2,742
Unpaid Principal Balance
With no related allowance recorded	2,177	2,220
With an allowance recorded	2,718	1,539
Total	4,895	3,759
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	1,534	792
Total	1,534	792
Average Recorded Investment
With no related allowance recorded	1,371
With an allowance recorded	2,421
Total	3,792
Interest Income Recognized
With no related allowance recorded	12
With an allowance recorded	23
Total	35
Real Estate: Construction, 1 to 4 family residential [Member]
Recorded Investment
With no related allowance recorded	99	101
With an allowance recorded	0	0
Total impaired loans	99	101
Unpaid Principal Balance
With no related allowance recorded	144	144
With an allowance recorded	0	0
Total	144	144
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Total	0	0
Average Recorded Investment
With no related allowance recorded	100
With an allowance recorded	0
Total	100
Interest Income Recognized
With no related allowance recorded	0
With an allowance recorded	0
Total	0
Real Estate: Construction, land development and commercial [Member]
Recorded Investment
With no related allowance recorded	319	320
With an allowance recorded	0	0
Total impaired loans	319	320
Unpaid Principal Balance
With no related allowance recorded	334	336
With an allowance recorded	0	0
Total	334	336
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Total	0	0
Average Recorded Investment
With no related allowance recorded	320
With an allowance recorded	0
Total	320
Interest Income Recognized
With no related allowance recorded	4
With an allowance recorded	0
Total	4
Real Estate: Mortgage, farmland [Member]
Recorded Investment
With no related allowance recorded	3,969	4,081
With an allowance recorded	161	0
Total impaired loans	4,130	4,081
Unpaid Principal Balance
With no related allowance recorded	4,496	4,613
With an allowance recorded	161	0
Total	4,657	4,613
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	3	0
Total	3	0
Average Recorded Investment
With no related allowance recorded	3,995
With an allowance recorded	161
Total	4,156
Interest Income Recognized
With no related allowance recorded	39
With an allowance recorded	3
Total	42
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Recorded Investment
With no related allowance recorded	6,838	7,157
With an allowance recorded	1,695	1,280
Total impaired loans	8,533	8,437
Unpaid Principal Balance
With no related allowance recorded	8,630	9,015
With an allowance recorded	1,962	1,501
Total	10,592	10,516
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	126	64
Total	126	64
Average Recorded Investment
With no related allowance recorded	6,896
With an allowance recorded	1,730
Total	8,626
Interest Income Recognized
With no related allowance recorded	18
With an allowance recorded	9
Total	27
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Recorded Investment
With no related allowance recorded	95	0
With an allowance recorded	145	233
Total impaired loans	240	233
Unpaid Principal Balance
With no related allowance recorded	339	246
With an allowance recorded	146	233
Total	485	479
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	50	47
Total	50	47
Average Recorded Investment
With no related allowance recorded	94
With an allowance recorded	147
Total	241
Interest Income Recognized
With no related allowance recorded	0
With an allowance recorded	0
Total	0
Real Estate: Mortgage, multi-family [Member]
Recorded Investment
With no related allowance recorded	1,804	1,816
With an allowance recorded	0	0
Total impaired loans	1,804	1,816
Unpaid Principal Balance
With no related allowance recorded	1,921	1,930
With an allowance recorded	0	0
Total	1,921	1,930
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Total	0	0
Average Recorded Investment
With no related allowance recorded	1,810
With an allowance recorded	0
Total	1,810
Interest Income Recognized
With no related allowance recorded	20
With an allowance recorded	0
Total	20
Real Estate: Mortgage, commercial [Member]
Recorded Investment
With no related allowance recorded	1,865	1,302
With an allowance recorded	0	70
Total impaired loans	1,865	1,372
Unpaid Principal Balance
With no related allowance recorded	2,415	1,852
With an allowance recorded	0	70
Total	2,415	1,922
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	1
Total	0	1
Average Recorded Investment
With no related allowance recorded	1,876
With an allowance recorded	0
Total	1,876
Interest Income Recognized
With no related allowance recorded	7
With an allowance recorded	0
Total	7
Loans to individuals [Member]
Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	2	93
Total impaired loans	2	93
Unpaid Principal Balance
With no related allowance recorded	14	14
With an allowance recorded	2	93
Total	16	107
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	2	93
Total	2	$ 93
Average Recorded Investment
With no related allowance recorded	0
With an allowance recorded	2
Total	2
Interest Income Recognized
With no related allowance recorded	0
With an allowance recorded	0
Total	$ 0

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Lease term, option to extend (up to)	10 years
Lease term, option to terminate (within)	1 year
Operating lease expense	$ 140	$ 170
Operating lease cost	110	140
Short-term lease cost	10	10
Variable lease cost	20	20
Operating lease payments	120	140
Right-of-use assets obtained in exchange for lease obligations	0	$ 3,581
Operating lease, right-of-use asset	3,110		$ 3,200
Total operating lease liabilities	$ 3,137		$ 3,230
Weighted average remaining lease term	10 years 11 months 23 days		10 years 10 months 9 days
Weighted average discount rate	3.46%		3.46%
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	16 years

Leases - Minimum Future Rental

Leases - Minimum Future Rental Commitments, Topic 842 (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2019	$ 352
2020	456
2021	448
2022	301
2023	250
Thereafter	2,009
Total lease payments	3,816
Less imputed interest	(679)
Total operating lease liabilities	$ 3,137	$ 3,230

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Readily Available Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	$ 268,293	$ 241,965
Investment securities	148,740	128,585
Loans held for sale	0	0
Loans
Agricultural	0	0
Commercial and financial	0	0
Real estate:
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Obligations of state and political subdivisions	0	0
Accrued interest receivable	0	0
Total financial instrument assets	417,033	370,550
Deposits
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Federal Home Loan Bank borrowings	0	0
Interest rate swaps	0
Accrued interest payable	0	0
Total financial instrument liabilities	0	0
Financial instrument with off-balance sheet risk:
Loan commitments	0	0
Letters of credit	0	0
Total financial instrument liabilities with off-balance-sheet risk	0	0
Observable Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	0	0
Investment securities	234,473	237,783
Loans held for sale	11,592	8,400
Loans
Agricultural	0	0
Commercial and financial	0	0
Real estate:
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Obligations of state and political subdivisions	0	0
Accrued interest receivable	13,691	12,442
Total financial instrument assets	259,756	258,625
Deposits
Noninterest-bearing deposits	381,171	387,612
Interest-bearing deposits	2,370,184	2,292,332
Federal Home Loan Bank borrowings	186,018	186,091
Interest rate swaps	3,447	2,349
Accrued interest payable	2,352	2,474
Total financial instrument liabilities	2,943,172	2,870,858
Financial instrument with off-balance sheet risk:
Loan commitments	0	0
Letters of credit	0	0
Total financial instrument liabilities with off-balance-sheet risk	0	0
Company Determined Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	0	0
Investment securities	0	0
Loans held for sale	0	0
Loans
Agricultural	94,325	90,118
Commercial and financial	222,339	217,640
Real estate:
Construction, 1 to 4 family residential	82,626	79,954
Construction, land development and commercial	100,695	107,276
Mortgage, farmland	240,554	239,521
Mortgage, 1 to 4 family first liens	887,278	896,676
Mortgage, 1 to 4 family junior liens	142,083	143,261
Mortgage, multi-family	353,963	349,663
Mortgage, commercial	402,564	395,838
Loans to individuals	32,244	32,722
Obligations of state and political subdivisions	52,850	50,564
Accrued interest receivable	0	0
Total financial instrument assets	2,611,521	2,603,233
Deposits
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Federal Home Loan Bank borrowings	0	0
Interest rate swaps	0
Accrued interest payable	0	0
Total financial instrument liabilities	0	0
Financial instrument with off-balance sheet risk:
Loan commitments	0	0
Letters of credit	0	0
Total financial instrument liabilities with off-balance-sheet risk	0	0
Carrying Amount [Member]
Financial instrument assets:
Cash and cash equivalents	268,293	241,965
Investment securities	383,213	366,368
Loans held for sale	11,592	8,400
Loans
Agricultural	94,051	88,917
Commercial and financial	221,394	216,335
Real estate:
Construction, 1 to 4 family residential	82,255	79,096
Construction, land development and commercial	101,389	106,924
Mortgage, farmland	242,107	238,780
Mortgage, 1 to 4 family first liens	896,775	902,630
Mortgage, 1 to 4 family junior liens	146,799	147,634
Mortgage, multi-family	352,986	346,938
Mortgage, commercial	405,345	398,145
Loans to individuals	30,984	31,455
Obligations of state and political subdivisions	52,314	49,423
Accrued interest receivable	13,691	12,442
Total financial instrument assets	3,303,188	3,235,452
Deposits
Noninterest-bearing deposits	381,171	387,612
Interest-bearing deposits	2,350,543	2,273,752
Federal Home Loan Bank borrowings	185,000	185,000
Interest rate swaps	3,447	2,349
Accrued interest payable	2,352	2,474
Total financial instrument liabilities	2,922,513	2,851,187
Financial instrument with off-balance sheet risk:
Loan commitments	479,581	424,165
Letters of credit	8,447	8,569
Total financial instrument liabilities with off-balance-sheet risk	488,028	432,734
Estimated Fair Value [Member]
Financial instrument assets:
Cash and cash equivalents	268,293	241,965
Investment securities	383,213	366,368
Loans held for sale	11,592	8,400
Loans
Agricultural	94,325	90,118
Commercial and financial	222,339	217,640
Real estate:
Construction, 1 to 4 family residential	82,626	79,954
Construction, land development and commercial	100,695	107,276
Mortgage, farmland	240,554	239,521
Mortgage, 1 to 4 family first liens	887,278	896,676
Mortgage, 1 to 4 family junior liens	142,083	143,261
Mortgage, multi-family	353,963	349,663
Mortgage, commercial	402,564	395,838
Loans to individuals	32,244	32,722
Obligations of state and political subdivisions	52,850	50,564
Accrued interest receivable	13,691	12,442
Total financial instrument assets	3,288,310	3,232,408
Deposits
Noninterest-bearing deposits	381,171	387,612
Interest-bearing deposits	2,370,184	2,292,332
Federal Home Loan Bank borrowings	186,018	186,091
Interest rate swaps	3,447	2,349
Accrued interest payable	2,352	2,474
Total financial instrument liabilities	2,943,172	2,870,858
Financial instrument with off-balance sheet risk:
Loan commitments	0	0
Letters of credit	0	0
Total financial instrument liabilities with off-balance-sheet risk	$ 0	$ 0

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	$ 371,839	$ 355,303
U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	148,740	128,585
State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	210,273	211,489
Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	0
Total	417,033	370,550
Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	(3,447)	(2,349)
Total	259,756	258,625
Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	0
Total	2,611,521	2,603,233
Recurring Basis [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	368,392	352,954
Recurring Basis [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	148,740	128,585
Recurring Basis [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	210,273	211,489
Recurring Basis [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	12,826	15,229
Recurring Basis [Member] | Interest rate swaps [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	(3,447)	(2,349)
Recurring Basis [Member] | Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	148,740	128,585
Recurring Basis [Member] | Readily Available Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	148,740	128,585
Recurring Basis [Member] | Readily Available Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	0	0
Recurring Basis [Member] | Readily Available Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	0	0
Recurring Basis [Member] | Readily Available Market Prices [Member] | Interest rate swaps [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	0
Recurring Basis [Member] | Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	219,652	224,369
Recurring Basis [Member] | Observable Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	0	0
Recurring Basis [Member] | Observable Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	210,273	211,489
Recurring Basis [Member] | Observable Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	12,826	15,229
Recurring Basis [Member] | Observable Market Prices [Member] | Interest rate swaps [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	(3,447)	(2,349)
Recurring Basis [Member] | Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	0	$ 0
Recurring Basis [Member] | Company Determined Market Prices [Member] | Interest rate swaps [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	$ 0

Fair Value Measurements, Asse_2

Fair Value Measurements, Assets and Liabilities on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Readily Available Market Prices [Member]
Loans
Agricultural	$ 0	$ 0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Total financial instrument assets	417,033	370,550
Observable Market Prices [Member]
Loans
Agricultural	0	0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Total financial instrument assets	259,756	258,625
Company Determined Market Prices [Member]
Loans
Agricultural	94,325	90,118
Commercial and financial	222,339	217,640
Real Estate [Abstract]
Construction, land development and commercial	100,695	107,276
Mortgage, farmland	240,554	239,521
Mortgage, 1 to 4 family first liens	887,278	896,676
Mortgage, 1 to 4 family junior liens	142,083	143,261
Mortgage, multi-family	353,963	349,663
Mortgage, commercial	402,564	395,838
Loans to individuals	32,244	32,722
Total financial instrument assets	2,611,521	2,603,233
Nonrecurring Basis [Member]
Loans
Agricultural	1,371	1,272
Commercial and financial	2,099	1,803
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	215	215
Mortgage, farmland	3,464	3,576
Mortgage, 1 to 4 family first liens	7,850	7,986
Mortgage, 1 to 4 family junior liens	189	49
Mortgage, multi-family	1,804	1,816
Mortgage, commercial	1,732	1,237
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	18,724	17,954
Total Losses	93	1,038
Nonrecurring Basis [Member] | Agricultural [Member]
Real Estate [Abstract]
Total Losses	0	36
Nonrecurring Basis [Member] | Commercial and financial [Member]
Real Estate [Abstract]
Total Losses	0	499
Nonrecurring Basis [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Construction, land development and commercial [Member]
Real Estate [Abstract]
Total Losses	0	8
Nonrecurring Basis [Member] | Real Estate: Mortgage, farmland [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Real Estate [Abstract]
Total Losses	93	370
Nonrecurring Basis [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Mortgage, multi-family [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Mortgage, commercial [Member]
Real Estate [Abstract]
Total Losses	0	125
Nonrecurring Basis [Member] | Loans to individuals [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Foreclosed assets [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Loans
Agricultural	0	0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	0	0
Nonrecurring Basis [Member] | Observable Market Prices [Member]
Loans
Agricultural	0	0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	0	0
Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Loans
Agricultural	1,371	1,272
Commercial and financial	2,099	1,803
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	215	215
Mortgage, farmland	3,464	3,576
Mortgage, 1 to 4 family first liens	7,850	7,986
Mortgage, 1 to 4 family junior liens	189	49
Mortgage, multi-family	1,804	1,816
Mortgage, commercial	1,732	1,237
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	$ 18,724	$ 17,954

Stock Repurchase Program (Detai

Stock Repurchase Program (Details) - $ / shares	3 Months Ended		176 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Jul. 26, 2005
Equity [Abstract]
Maximum number of share authorized to repurchase under the program (in shares)				1,500,000
Common stock purchased during the period (in shares)	68,881	69,771	1,284,884
Average price per share (in dollars per share)	$ 65.88

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
State and political subdivisions [Member]
Concentration Risk [Line Items]
Investment in securities issued by state and political subdivisions within the state of Iowa	$ 102,080
Home equity loans [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	69,940	$ 65,203
Credit cards [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	59,848	57,421
Commercial, real estate and home construction [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	114,387	94,490
Commercial lines and real estate purchase loans [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	235,406	207,051
Outstanding letters of credit [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	$ 8,447	$ 8,569

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Examination [Line Items]
Effective tax rate	20.34%	21.22%
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income tax examination, years under examination	December 31, 2019, 2018, and 2017
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Income tax examination, years under examination	December 31, 2019, 2018, and 2017

Derivative Financial Instrume_3

Derivative Financial Instruments (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)	Nov. 07, 2013USD ($)derivative
Derivatives, Fair Value [Line Items]
Owned and pledged as collateral	$ 3,450,000
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Net change in unrealized loss on derivatives	(1,098,000)	$ (298,000)
Interest Rate Swap 1 [Member] | Interest Expense [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Reclassified from AOCI into Income	0		$ 0
Interest Rate Swap 1 [Member] | Other Income [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Recognized in Income on Derivatives	0		0
Interest Rate Swap 1 [Member] | Other Liabilities [Member]
Derivative instrument according to type of hedges [Abstract]
Notional Amount	25,000,000		25,000,000	$ 25,000,000
Fair Value	$ (357,000)		$ (279,000)
Maturity	Nov. 9, 2020		Nov. 9, 2020
Interest Rate Swap 1 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Net change in unrealized loss on derivatives	$ (58,000)		$ (119,000)
Interest Rate Swap 2 [Member] | Interest Expense [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Reclassified from AOCI into Income	0		0
Interest Rate Swap 2 [Member] | Other Income [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Recognized in Income on Derivatives	0		0
Interest Rate Swap 2 [Member] | Other Liabilities [Member]
Derivative instrument according to type of hedges [Abstract]
Notional Amount	25,000,000		25,000,000	$ 25,000,000
Fair Value	$ (3,090,000)		$ (2,070,000)
Maturity	Nov. 7, 2023		Nov. 7, 2023
Interest Rate Swap 2 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Net change in unrealized loss on derivatives	$ (766,000)		$ (446,000)
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate swaps held | derivative				2
Designated as Hedging Instrument [Member] | Interest Rate Swap 1 [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate swaps held | derivative				1