Farmers & Merchants Bancorp (FMCB) 10-K 15 Mar 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 28, 2021	Jun. 30, 2020
Cover [Abstract]
Entity Registrant Name	FARMERS & MERCHANTS BANCORP
Entity Central Index Key	0001085913
Current Fiscal Year End Date	--12-31
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity File Number	000-26099
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3327828
Entity Address, Address Line One	111 W. Pine Street
Entity Address, City or Town	Lodi
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95240
City Area Code	209
Local Phone Number	367-2300
Title of 12(b) Security	Common Stock
Trading Symbol	FMCB
Security Exchange Name	NONE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 560,250,536
Entity Common Stock, Shares Outstanding		789,646

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Cash and Cash Equivalents:
Cash and Due from Banks	$ 66,327	$ 71,564
Interest Bearing Deposits with Banks	317,510	223,194
Total Cash and Cash Equivalents	383,837	294,758
Investment Securities:
Available-for-Sale, amortized cost $789,175, and $502,693, respectively	807,732	507,386
Held-to-Maturity, fair value $70,049 and $61,097, respectively	68,933	60,229
Total Investment Securities	876,665	567,615
Loans & Leases:	3,099,592	2,673,027
Less: Allowance for Credit Losses	58,862	55,012
Loans & Leases, Net	3,040,730	2,618,015
Premises and Equipment, Net	50,147	45,271
Bank Owned Life Insurance, Net	69,235	67,148
Interest Receivable and Other Assets	129,839	129,023
Total Assets	4,550,453	3,721,830
Deposits:
Demand	1,475,425	1,067,187
Interest-Bearing Transaction	902,487	697,952
Savings and Money Market	1,260,487	994,958
Time	421,868	517,922
Total Deposits	4,060,267	3,278,019
Subordinated Debentures	10,310	10,310
Interest Payable and Other Liabilities	56,211	64,205
Total Liabilities	4,126,788	3,352,534
Commitments & Contingencies (See Note 19)
Shareholders' Equity
Preferred Stock: No Par Value, 1,000,000 Shares Authorized, None Issued or Outstanding	0	0
Common Stock: Par Value $0.01, 7,500,000 Shares Authorized, 789,646 and 793,033 Shares Issued and Outstanding at December 31, 2020 and 2019, respectively.	8	8
Additional Paid-In Capital	77,516	79,947
Retained Earnings	333,070	286,036
Accumulated Other Comprehensive Income, Net of Taxes	13,071	3,305
Total Shareholders' Equity	423,665	369,296
Total Liabilities and Shareholders' Equity	$ 4,550,453	$ 3,721,830

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investment Securities:
Available-for-sale, amortized cost	$ 789,175	$ 502,693
Held-to-Maturity at fair value	$ 70,049	$ 61,097
Shareholders' Equity
Preferred Stock, par value (in dollars per share)	$ 0	$ 0
Preferred Stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred Stock, shares issued (in shares)	0	0
Preferred Stock, shares outstanding (in shares)	0	0
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	7,500,000	7,500,000
Common Stock, shares issued (in shares)	789,646	793,033
Common Stock, shares outstanding (in shares)	789,646	793,033

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income
Interest and Fees on Loans & Leases	$ 143,383	$ 137,237	$ 119,837
Interest on Deposits with Banks	1,207	4,909	2,755
Interest on Investment Securities:
Taxable	12,391	9,911	9,257
Exempt from Federal Tax	1,671	1,651	1,604
Total Interest Income	158,652	153,708	133,453
Interest Expense
Deposits	9,113	12,640	7,425
Borrowed Funds	0	0	1
Subordinated Debentures	378	554	524
Total Interest Expense	9,491	13,194	7,950
Net Interest Income	149,161	140,514	125,503
Provision for Credit Losses	4,500	200	5,533
Net Interest Income After Provision for Credit Losses	144,661	140,314	119,970
Non-Interest Income
Service Charges on Deposit Accounts	2,637	3,673	3,479
Net Gain (Loss) on Sales Investment Securities	40	1	(1,260)
Increase in Cash Surrender Value of Bank Owned Life Insurance	2,088	2,031	1,900
Debit Card and ATM Fees	5,536	5,120	4,365
Net Gain on Deferred Compensation Investments	1,777	2,625	1,088
Other	3,618	3,791	5,647
Total Non-Interest Income	15,696	17,241	15,219
Non-Interest Expense
Salaries and Employee Benefits	56,950	55,250	50,054
Net Gain on Deferred Compensation Plan Investments	1,777	2,625	1,088
Occupancy	4,640	4,295	3,905
Equipment	4,994	4,921	4,303
Marketing	922	1,254	1,232
Legal	128	2,347	968
FDIC Insurance	517	624	912
Acquisition Expenses	0	0	2,933
Other	12,478	10,926	10,064
Total Non-Interest Expense	82,406	82,242	75,459
Income Before Provision for Income Taxes	77,951	75,313	59,730
Provision for Income Taxes	19,217	19,277	14,203
Net Income	$ 58,734	$ 56,036	$ 45,527
Basic and Diluted Earnings Per Common Share (in dollars per share)	$ 74.03	$ 71.18	$ 56.82

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Consolidated Statements of Comprehensive Income [Abstract]
Net Income	$ 58,734	$ 56,036	$ 45,527
Other Comprehensive Loss
Net Unrealized Gain (Loss) on Available-for-Sale Securities	13,905	8,936	(4,343)
Deferred Tax (Benefit) Expense Related to Unrealized (Gain) Losses	(4,099)	(2,642)	1,284
Reclassification Adjustment for Realized (Gain) Loss on Sales of Available-for-Sale Securities Included in Net Income	(40)	(1)	1,260
Deferred Tax Related to Reclassification Adjustment	0	0	(372)
Total Other Comprehensive Income (Loss)	9,766	6,293	(2,171)
Comprehensive Income	$ 68,500	$ 62,329	$ 43,356

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Total
Balance at Dec. 31, 2017	$ 8,000	$ 93,624,000	$ 206,845,000	$ (817,000)	$ 299,660,000
Balance (in shares) at Dec. 31, 2017	812,304
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			45,527,000		45,527,000
Cash Dividends Declared on Common Stock			(11,151,000)		(11,151,000)
Repurchase of Common Stock		(31,152,000)			(31,152,000)
Repurchase of Common Stock (in shares)	(44,503)
Issuance of Common Stock		10,502,000			10,502,000
Issuance of Common Stock (in shares)	15,920
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				(2,171,000)	(2,171,000)
Balance at Dec. 31, 2018	$ 8,000	72,974,000	241,221,000	(2,988,000)	311,215,000
Balance (in shares) at Dec. 31, 2018	783,721
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			56,036,000		56,036,000
Cash Dividends Declared on Common Stock			(11,221,000)		(11,221,000)
Issuance of Common Stock		6,973,000			6,973,000
Issuance of Common Stock (in shares)	9,312
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				6,293,000	6,293,000
Balance at Dec. 31, 2019	$ 8,000	79,947,000	286,036,000	3,305,000	$ 369,296,000
Balance (in shares) at Dec. 31, 2019	793,033				793,033
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			58,734,000		$ 58,734,000
Cash Dividends Declared on Common Stock			(11,700,000)		(11,700,000)
Repurchase of Common Stock		(2,834,000)			(2,834,000)
Repurchase of Common Stock (in shares)	(3,910)
Issuance of Common Stock		403,000			403,000
Issuance of Common Stock (in shares)	523
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				9,766,000	9,766,000
Balance at Dec. 31, 2020	$ 8,000	$ 77,516,000	$ 333,070,000	$ 13,071,000	$ 423,665,000
Balance (in shares) at Dec. 31, 2020	789,646				789,646

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash Dividends Declared per Share of Common Stock (in dollars per share)	$ 14.75	$ 14.20	$ 13.90

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net Income	$ 58,734,000	$ 56,036,000	$ 45,527,000
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Provision for Credit Losses	4,500,000	200,000	5,533,000
Depreciation and Amortization	2,769,000	2,756,000	2,421,000
(Benefit) Provision for Deferred Income Taxes	(1,962,000)	(3,254,000)	5,462,000
Net Amortization of Investment Security Premiums & Discounts	1,159,000	510,000	861,000
Amortization of Core Deposit Intangible	626,000	639,000	228,000
Accretion of Discount on Acquired Loans	(166,000)	(47,000)	(153,000)
Net (Gain) Loss on Sale of Investment Securities	(40,000)	(1,000)	1,260,000
Net Loss (Gain) on Sale of Property & Equipment	(32,000)	87,000	(273,000)
Earnings from Equity Investment	0	0	(66,000)
Dividends from Equity Investment	0	0	63,000
Gain on Remeasurement of Previously Held Equity Investment	0	0	(997,000)
Net Change in Operating Assets & Liabilities:
Net (Increase) Decrease in Interest Receivable and Other Assets	(3,333,000)	18,949,000	(2,098,000)
Net (Decrease) Increase in Interest Payable and Other Liabilities	(4,136,000)	4,983,000	6,000
Net Cash Provided by Operating Activities	58,119,000	80,858,000	57,774,000
Investing Activities:
Purchase of Investment Securities Available-for-Sale	(670,550,000)	(652,280,000)	(465,414,000)
Proceeds from Sold, Matured, or Called Securities Available-for-Sale	383,257,000	644,244,000	550,727,000
Purchase of Investment Securities Held-to-Maturity	(22,020,000)	(16,376,000)	(9,813,000)
Proceeds from Matured, or Called Securities Held-to-Maturity	13,299,000	10,871,000	10,647,000
Net Loans & Leases Paid, Originated or Acquired	(427,573,000)	(102,413,000)	(276,066,000)
Principal Collected on Loans & Leases Previously Charged Off	524,000	220,000	158,000
Cash Paid for Acquisition, Net	0	0	(5,987,000)
Additions to Premises and Equipment, Net	(7,709,000)	(15,537,000)	(4,577,000)
Purchase of Other Investments	(6,063,000)	(4,400,000)	(5,750,000)
Proceeds from Sale of Property & Equipment	81,000	41,000	986,000
Net Cash Used in Investing Activities	(736,754,000)	(135,630,000)	(205,089,000)
Financing Activities:
Net Increase in Deposits	782,248,000	215,187,000	148,033,000
Stock Repurchases	(2,834,000)	0	(31,152,000)
Cash Dividends	(11,700,000)	(11,221,000)	(11,151,000)
Net Cash Provided by Financing Activities	767,714,000	203,966,000	105,730,000
Net Change in Cash and Cash Equivalents	89,079,000	149,194,000	(41,585,000)
Cash and Cash Equivalents at Beginning of Year	294,758,000	145,564,000	187,149,000
Cash and Cash Equivalents at End of Year	383,837,000	294,758,000	145,564,000
Supplementary Data
Cash Payments Made for Income Taxes	9,581,000	7,342,000	7,971,000
Issuance of Common Stock to the Bank's Non-Qualified Retirement Plans	403,000	6,973,000	10,502,000
Interest Paid	10,903,000	11,755,000	7,731,000
Supplementary Noncash Disclosure
Lease Liabilities Arising from Obtaining Right-of-Use Assets	0	5,645,000	0
Acquisitions:
Fair Value of Assets Acquired	0	0	234,456,000
Fair Value of Liabilities Acquired	$ 0	$ 0	$ 192,809,000

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Significant Accounting Policies	1. Significant Accounting Policies Farmers & Merchants Bancorp (the “Company”) was organized March 10, 1999. Primary operations are related to traditional banking activities through its subsidiary Farmers & Merchants Bank of Central California (the “Bank”) which was established in 1916. The Bank’s wholly owned subsidiaries include Farmers & Merchants Investment Corporation and Farmers/Merchants Corp. Farmers & Merchants Investment Corporation has been dormant since 1991. Farmers/Merchants Corp. acts as trustee on deeds of trust originated by the Bank. The Company’s other wholly owned subsidiaries include F & M Bancorp, Inc. and FMCB Statutory Trust I. F & M Bancorp, Inc. was created in March 2002 to protect the name F & M Bank. During 2002, the Company completed a fictitious name filing in California to begin using the streamlined name “F & M Bank” as part of a larger effort to enhance the Company’s image and build brand name recognition. In December 2003, the Company formed a wholly owned subsidiary, FMCB Statutory Trust I, for the sole purpose of issuing Trust Preferred Securities and related subordinated debentures, in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). FMCB Statutory Trust I is a non-consolidated subsidiary. On October 10, 2018, Farmers & Merchants Bancorp completed the acquisition of the Bank of Rio Vista, headquartered in Rio Vista, California, a locally owned and operated community bank established in 1904. As of the acquisition date, Bank of Rio Vista had approximately $217.5 million in assets and three branch locations in the communities of Rio Vista, Walnut Grove, and Lodi. Since the Company had a 39.65% interest in Bank of Rio Vista prior to the acquisition of the remaining interest, the transaction was accounted for as a business combination achieved in stages or a step acquisition. The Company, through an independent valuation, remeasured its previously held equity interest in Bank of Rio Vista at fair value, which resulted in a gain for the excess of the acquisition-date fair value over its carrying value of $997,000 which is included in other non-interest income in the consolidated statements of income. At the effective time of the acquisition, Bank of Rio Vista was merged into Farmers & Merchants Bank of Central California. Basis of Presentation The accounting and reporting policies of the Company conform to U.S. GAAP and prevailing practice within the banking industry. The accompanying consolidated financial statements and notes thereto have been prepared in accordance with accounting principles generally accepted in the United States of America for financial information. The accompanying consolidated financial statements include the accounts of the Company and the Company’s wholly owned subsidiaries, F & M Bancorp, Inc. and the Bank, along with the Bank’s wholly owned subsidiaries, Farmers & Merchants Investment Corporation and Farmers/Merchants Corp. Significant inter-company transactions have been eliminated in consolidation. The preparation of consolidated financial statements in conformity with U.S. GAAP and under the rules and regulations of U.S. Securities and Exchange Commission, requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates Certain amounts in the prior years' financial Accounting Guidance Pending Adoption at December 31, 2020 The following paragraphs provide descriptions of newly issued but not yet effective accounting standards that could have a material effect on the Company’s financial position or results of operations. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU will require the earlier recognition of credit losses on loans and other financial instruments based on an expected loss model, replacing the incurred loss model that is currently in use. Under the new guidance, an entity will measure all expected credit losses for financial instruments held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. The expected loss model will apply to loans and leases, unfunded lending commitments, held-to-maturity debt securities and other debt instruments measured at amortized cost. The impairment model for available-for-sale debt securities will require the recognition of credit losses through a valuation allowance when fair value is less than amortized cost, regardless of whether the impairment is considered to be other-than-temporary. During 2019, the Company completed an assessment of its CECL data and system needs, and engaged a third-party vendor to assist in developing a CECL model. The Company, in conjunction with this vendor, researched and analyzed modeling standards, loan segmentation, as well as potential external inputs to supplement our historical loss history. Model validation began in the third quarter, enabling the Company to complete parallel runs using data beginning with the second quarter of 2019 The new guidance had been effective on January 1, 2020. However, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) and H.R. 133, resulted in federal banking regulators issuing an interim final rule allowing banks the option of delaying the implementation of CECL until January 1, 2022. In addition, the national banking regulators have issued a joint statement allowing financial institutions to mitigate the effects of CECL in their regulatory capital calculations for up to two years. The Company has elected to delay CECL adoption, but continues to run its CECL model quarterly to accumulate data for the ultimate implementation. Management is currently evaluating the impact that the standard will have on its consolidated financial statements Out of Period Adjustment During the quarter ended September 30, 2018, while preparing 2017 tax returns, the Company identified certain items related to IRS Code Section 162(m) that were not appropriately reflected in the 2014 through 2017 Provision for Income Taxes. To reflect this change, the cumulative impact of $990,000 was recognized by reducing the Company’s Provision for Income Taxes in the third quarter of 2018. After evaluating the quantitative and qualitative aspects of the adjustment, the Company concluded that its 2017 financial statements were not materially misstated and, therefore, no restatement was required. Cash and Cash Equivalents For purposes of the Consolidated Statements of Cash Flows, the Company has defined cash and cash equivalents as those amounts included in the balance sheet captions Cash and Due from Banks, Interest Bearing Deposits with Banks and Federal Funds Sold, which have original maturity dates of 3 months or less. For these instruments, the carrying amount is a reasonable estimate of fair value. Investment Securities Investment securities are classified at the time of purchase as held-to-maturity (“HTM”) if it is management’s intent and the Company has the ability to hold the securities until maturity. These securities are carried at cost, adjusted for amortization of premium over the term through the earliest call date and accretion of discount using a level yield of interest over the estimated remaining period until maturity. Losses, reflecting a decline in value judged by the Company to be other than temporary, are recognized in the period in which they occur. Securities are classified as available-for-sale (“AFS”) if it is management’s intent, at the time of purchase, to hold the securities for an unstated period of time and may be used as part of the Company’s asset/liability management strategy. These securities are reported at fair value with aggregate unrealized gains or losses excluded from income and included as a separate component of shareholders’ equity, net of related income taxes. Fair values are based on quoted market prices or broker/dealer price quotations on a specific identification basis. Gains or losses on the sale of these securities are computed using the specific identification method. Trading securities, if any, are acquired for short-term appreciation and are recorded in a trading portfolio and are carried at fair value, with unrealized gains and losses recorded in earnings. Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss, and the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: (1) OTTI related to credit loss, which must be recognized in the income statement; and (2) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. Equity securities, are carried at fair value, with unrealized and realized gains recognized through earnings Loans & Leases Loans & leases are reported at the principal amount outstanding net of unearned discounts and deferred loan & lease fees and costs. Interest income on loans & leases is accrued daily on the outstanding balances using the simple interest method. Loan & lease origination fees are deferred and recognized over the contractual life of the loan or lease as an adjustment to the yield. Loans & leases are placed on non-accrual status when the collection of principal or interest is in doubt or when they become past due for 90 days or more unless they are both well-secured and in the process of collection. For this purpose, a loan or lease is considered well-secured if it is collateralized by property having a net realizable value in excess of the amount of the loan or lease or is guaranteed by a financially capable party. When a loan or lease is placed on non-accrual status, the accrued and unpaid interest receivable is reversed and charged against current income; thereafter, interest income is recognized only as it is collected in cash. Additionally, cash would be applied to principal if all principal was not expected to be collected. Loans & leases placed on non-accrual status are returned to accrual status when the loans or leases are paid current as to principal and interest and future payments are expected to be made in accordance with the contractual terms of the loan or lease. A loan or lease is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due, including principal and interest, according to the contractual terms of the original agreement. Impaired loans & leases are either: (1) non-accrual loans & leases; or (2) restructured loans & leases that are still accruing interest. Loans or leases determined to be impaired are individually evaluated for impairment. When a loan or lease is impaired, the Company measures impairment based on the present value of expected future cash flows discounted at the loan or lease's effective interest rate, except that as a practical expedient, it may measure impairment based on a loan or lease's observable market price, or the fair value of the collateral if the loan or lease is collateral dependent. A loan or lease is collateral dependent if the repayment of the loan or lease is expected to be provided solely by the underlying collateral A restructuring of a loan or lease constitutes a troubled debt restructuring (TDR) if the Company for economic or legal reasons related to the borrower’s (the term “borrower” is used herein to describe a customer who has entered into either a loan or lease transaction) financial difficulties grants a concession to the borrower that it would not otherwise consider. Restructured loans & leases typically present an elevated level of credit risk as the borrowers are not able to perform according to the original contractual terms. If the restructured loan or lease was current on all payments at the time of restructure and management reasonably expects the borrower will continue to perform after the restructure, management may keep the loan or lease on accrual. Loans & leases that are on nonaccrual status at the time they become TDR, remain on nonaccrual status until the borrower demonstrates a sustained period of performance, which the Company generally believes to be six Generally, the Company will not restructure loans or leases for borrowers unless: (1) the existing loan or lease is brought current as to principal and interest payments; and (2) the restructured loan or lease can be underwritten to reasonable underwriting standards. If these standards are not met other actions will be pursued (e.g., foreclosure) to collect outstanding loan or lease amounts. After restructure, a determination is made whether the loan or lease will be kept on accrual status based upon the underwriting and historical performance of the restructured credit. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law, and was amended and extended by the Consolidated Appropriations Act of 2021 (“H.R. 133”) on December 21, 2020. The CARES Act and H.R. 133 provide financial institutions, under specific circumstances, the opportunity to temporarily suspend certain requirements under generally accepted accounting principles related to modifications for a limited period of time to account for the effects of COVID-19. In March 2020, a joint statement was issued by federal and state regulatory agencies, after consultation with the FASB, to clarify that short-term loan modifications are not TDRs if made on a good-faith basis in response to COVID-19 to borrowers who were current prior to any relief. Under this guidance, six months is provided as an example of short-term, and current is defined as less than 30 days past due at the time the modification program is implemented. The guidance also provides that these modified loans generally will not be classified as nonaccrual during the term of the modification. See “Note 2 – Risks and Uncertainties” for additional information on the CARES Act, H.R. 133 and the impact of COVID-19 on the Company Allowance for Credit Losses The allowance for credit losses is an estimate of probable incurred credit losses inherent in the Company's loan & lease portfolio as of the balance sheet date The determination of the general reserve for loans & leases that are collectively evaluated for impairment is based on estimates made by management, to include, but not limited to, consideration of historical losses by portfolio segment, internal asset classifications, qualitative factors that include economic trends in the Company's service areas, industry experience and trends, geographic concentrations, estimated collateral values, the Company's underwriting policies, the character of the loan & lease portfolio, and probable losses inherent in the portfolio taken as a whole The Company maintains a separate allowance for each portfolio segment (loan & lease type). These portfolio segments include: (1) commercial real estate; (2) agricultural real estate; (3) real estate construction (including land and development loans); (4) residential 1 st determine the Company's overall allowance, which is included on the consolidated balance The Company assigns a risk rating to all loans & leases and periodically performs detailed reviews of all such loans & leases over a certain threshold to identify credit risks and assess overall collectability. For smaller balance loans & leases, such as consumer and residential real estate, a credit grade is established at inception, and then updated only when the loan or lease becomes contractually delinquent or when the borrower requests a modification. For larger balance loans, management monitors and analyzes the financial condition of borrowers and guarantors, trends in the industries in which borrowers operate and the fair values of collateral securing these loans & leases. These credit quality indicators are used to assign a risk rating to each individual loan or lease. These risk ratings are also subject to examination by independent specialists engaged by the Company. The risk ratings can be grouped into five major categories, defined as follows: Pass and Watch – A pass loan or lease is a strong credit with no existing or known potential weaknesses deserving of management's close attention. This category also includes “Watch” loans, which is a loan with an emerging weakness in either the individual credit or industry that requires additional attention. A credit may also be classified Watch if cash flows have not yet stabilized, such as in the case of a development project. Included in this category are all loans in which the Bank entered into a CARES Act modification Special Mention – A special mention loan or lease has potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or lease or in the Company's credit position at some future date. Special mention loans & leases are not adversely classified and do not expose the Company to sufficient risk to warrant adverse classification Substandard – A substandard loan or lease is not adequately protected by the current financial condition and paying capacity of the borrower or the value of the collateral pledged, if any. Loans or leases classified as substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Well-defined weaknesses include a project's lack of marketability, inadequate cash flow or collateral support, failure to complete construction on time or the project's failure to fulfill economic expectations. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected Doubtful – Loans or leases classified doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, based on currently known facts, conditions and values, highly questionable or improbable. Loss – Loans or leases classified as loss are considered uncollectible. Once a loan or lease becomes delinquent and repayment becomes questionable, the Company will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Company will estimate its probable loss and immediately charge-off some or all of the balance. The general reserve component of the allowance for credit losses also consists of reserve factors that are based on management's assessment Commercial Real Estate – Commercial real estate mortgage loans are generally considered to possess a higher inherent risk of loss than the Company’s commercial, agricultural and consumer loan types. Adverse economic developments or an overbuilt market impact commercial real estate projects and may result in troubled loans. Trends in vacancy rates of commercial properties impact the credit quality of these loans. High vacancy rates reduce operating revenues and the ability for properties to produce sufficient cash flow to service debt obligations. Real Estate Construction – Real estate construction loans, including land loans, are generally considered to possess a higher inherent risk of loss than the Company’s commercial, agricultural and consumer loan types. A major risk arises from the necessity to complete projects within specified cost and time lines. Trends in the construction industry significantly impact the credit quality of these loans, as demand drives construction activity. In addition, trends in real estate values significantly impact the credit quality of these loans, as property values determine the economic viability of construction projects. Commercial – These loans are generally considered to possess a moderate inherent risk of loss because they are shorter-term; typically made to relationship customers; generally underwritten to existing cash flows of operating businesses; and may be collateralized by fixed assets, inventory and/or accounts receivable. Debt coverage is provided by business cash flows and economic trends influenced by unemployment rates and other key economic indicators are closely correlated to the credit quality of these loans. Agricultural Real Estate and Agricultural – These loans are generally considered to possess a moderate inherent risk of loss since they are typically made to relationship customers and are secured by crop production, livestock and related real estate. These loans are vulnerable to two risk factors that are largely outside the control of Company and borrowers: commodity prices and weather conditions. Leases – Equipment leases are generally considered to possess a moderate inherent risk of loss. As lessor, the Company is subject to both the credit risk of the borrower and the residual value risk of the equipment. Credit risks are underwritten using the same credit criteria the Company would use when making an equipment term loan. Residual value risk is managed through the use of qualified, independent appraisers that establish the residual values the Company uses in structuring a lease. Residential 1st Mortgages and Home Equity Lines and Loans – These loans are generally considered to possess a lower inherent risk of loss. The degree of risk in residential real estate lending depends primarily on the loan amount in relation to collateral value, the interest rate and the borrower's ability to repay in an orderly fashion. Economic trends determined by unemployment rates and other key economic indicators are closely correlated to the credit quality of these loans. Weak economic trends indicate that the borrowers' capacity to repay their obligations may be deteriorating Consumer & Other – A consumer installment loan portfolio is usually comprised of a large number of small loans scheduled to be amortized over a specific period. Most installment loans are made for consumer purchases. Economic trends determined by unemployment rates and other key economic indicators are closely correlated to the credit quality of these loans. Weak economic trends indicate that the borrowers' capacity to repay their obligations may be deteriorating At least quarterly, the Board of Directors reviews the adequacy of the allowance, including consideration of the relative risks in the portfolio, current economic conditions and other factors. If the Board of Directors and management determine that changes are warranted based on those reviews, the allowance is adjusted. In addition, the Company's and Bank's regulators, including the Federal Reserve Board (“FRB”), the Department of Financial Protection and Innovation (“DFPI”) and the Federal Deposit Insurance Corporation (“FDIC”), as an integral part of their examination process, review the adequacy of the allowance. These regulatory agencies may require additions to the allowance based on their judgment about information available at the time of their examinations Acquired Loans Loans acquired through purchase or through a business combination are recorded at their fair value at the acquisition date. Credit discounts, which reflect estimates of credit losses, expected to be incurred over the life of the loan, are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date. Allowance for Credit Losses on Off-Balance-Sheet Credit Exposures The Company also maintains a separate allowance for off-balance-sheet commitments. Management estimates anticipated losses using historical data and utilization assumptions. The allowance for off-balance-sheet commitments is included in Interest Payable and Other Liabilities on the Company’s Consolidated Balance Sheet. Right of Use Lease Asset & Lease Liability The Company leases retail space and office space under operating leases. Most leases require the Company to pay real estate taxes, maintenance, insurance and other similar costs in addition to the base rent. Certain leases also contain lease incentives, such as tenant improvement allowances and rent abatement. Variable lease payments are recognized as lease expense as they are incurred. We record an operating lease right of use (ROU) asset and an operating lease liability (lease liability) for operating leases with a lease term greater than 12 months. The ROU asset and lease liability are recorded in other assets and other liabilities, respectively, in the consolidated statement of financial condition. 12 ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Accordingly, ROU assets are reduced by tenant improvement allowances from landlords plus any prepaid rent. We do not separate lease and non-lease components of contracts. As most of our leases do not provide an implicit rate, we generally use our incremental borrowing rate based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. Many of our leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule, which are factored into our determination of lease payments when appropriate. A majority of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. The ROU asset and lease liability terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Revenue from Contracts with Customers The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods. The Company’s primary sources of revenue are derived from interest and dividends earned on loans, investment securities, and other financial instruments that are not within the scope of Topic 606. The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is limited judgment involved in applying Topic 606 that significantly affects the determination of the amount and timing of revenue from contracts with customers. Premises and Equipment Premises, equipment, and leasehold improvements are stated at cost, less accumulated depreciation and amortization. Depreciation is computed principally by the straight-line method over the estimated useful lives of the assets. Estimated useful lives of buildings range from 30 to 40 years, and for furniture and equipment from 3 to 7 years. Leasehold improvements are amortized over the lesser of the terms of the respective leases, or their useful lives, which are generally 5 to 10 years. Remodeling and capital improvements are capitalized while maintenance and repairs are charged directly to occupancy expense. Other Real Estate Other real estate, which is included in other assets, is expected to be sold and is comprised of properties no longer utilized for business operations and property acquired through foreclosure in satisfaction of indebtedness. These properties are recorded at fair value less estimated selling costs upon acquisition. Revised estimates to the fair value less cost to sell are reported as adjustments to the carrying amount of the asset, provided that such adjusted value is not in excess of the carrying amount at acquisition. Initial losses on properties acquired through full or partial satisfaction of debt are treated as credit losses and charged to the allowance for credit losses at the time of acquisition. Subsequent declines in value from the recorded amounts, routine holding costs, and gains or losses upon disposition, if any, are included in non-interest expense as incurred. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law, and was amended and extended by H.R. 133 on December 21, 2020. The CARES Act and H.R. 133 restrict the ability of financial institutions to exercise their foreclosure rights on residential and multi-family properties backed by federally guaranteed mortgage loans. The State of California has gone further and temporarily suspended all residential and commercial foreclosures through June 30, 2021. The Company is working with its borrowers when they make requests to defer payments on their mortgage loans. See “Note 2 – Risks and Uncertainties” for additional information on the CARES Act and the impact of COVID-19 on the Company. Income Taxes The Company uses the liability method of accounting for income taxes. This method results in the recognition of deferred tax assets and liabilities that are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. The deferred provision for income taxes is the result of the net change in the deferred tax asset and deferred tax liability balances during the year. This amount combined with the current taxes payable or refundable results in the income tax expense for the current year. The Company follows the standards set forth in the “Income Taxes” topic of the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”), which clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements. This standard prescribes a recognition threshold and measurement standard for the financial statement recognition and measurement of an income tax position taken or expected to be taken in a tax return. It also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. The Company accounts for leases with Investment Tax Credits (ITC) under the deferred method as established in ASC 740-10. ITC are viewed and accounted for as a reduction of the cost of the related assets and presented as deferred income on the Company’s financial statement. The Company accounts for its interest in LIHTC using the cost method as established in ASC 323-740. As an investor, the Company obtains income tax credits and deductions from

Risks and Uncertainties

Risks and Uncertainties	12 Months Ended
	Dec. 31, 2020
Risks and Uncertainties [Abstract]
Risks and Uncertainties	2. Risks and Uncertainties The COVID-19 pandemic has affected all of us. Designated as an “essential business”, the Company’s subsidiary, Farmers & Merchants Bank of Central California, has kept all branches open and maintained regular business hours during these difficult times. Our staffing levels have remained stable during the COVID-19 crisis. We have taken what we believe are prudent measures to protect our employees and customers, while still providing core banking services. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law, and was amended and extended by the Consolidated Appropriations Act of 2021 (“H.R. 133”) on December 21, 2020. Through this legislation, as well as related federal and state regulatory actions, the federal government has taken extraordinary efforts to provide financial assistance to individuals and companies to help them move through these difficult times. However, there are no guarantees how long the COVID-19 virus may continue to impact our economy, and therefore, the Company. While we expect the effects of COVID-19 could have an adverse future impact on our business, financial condition and results of operations, we are unable to predict the full extent or nature of these impacts at the current time.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2020
Investment Securities [Abstract]
Investment Securities	3. Investment Securities The amortized cost, fair values, and unrealized gains and losses of the securities available-for-sale (in thousands) Amortized Gross Unrealized Fair/Book December 31, 2020 Cost Gains Losses Value US Treasury Notes $ 14,859 $ 429 $ - $ 15,288 US Government Agency SBA 8,252 1 93 8,160 Mortgage Backed Securities (1) 720,562 17,359 48 737,873 Corporate Securities 45,010 927 18 45,919 Other 492 - - 492 Total $ 789,175 $ 18,716 $ 159 $ 807,732 Amortized Gross Unrealized Fair/Book December 31, 2019 Cost Gains Losses Value US Treasury Notes $ 54,745 $ 250 $ - $ 54,995 US Government Agency SBA 10,902 9 113 10,798 Mortgage Backed Securities (1) 436,531 4,646 99 441,078 Other 515 - - 515 Total $ 502,693 $ 4,905 $ 212 $ 507,386 (1) The book values, estimated fair values and unrealized gains and losses of investments classified as held-to-maturity (in thousands) Amortized Gross Unrealized Fair December 31, 2020 Cost Gains Losses Value Obligations of States and Political Subdivisions $ 68,933 $ 1,116 $ - $ 70,049 Total $ 68,933 $ 1,116 $ - $ 70,049 Amortized Gross Unrealized Fair December 31, 2019 Cost Gains Losses Value Obligations of States and Political Subdivisions $ 60,229 $ 880 $ 12 $ 61,097 Total $ 60,229 $ 880 $ 12 $ 61,097 Fair values are based on quoted market prices or dealer quotes. If a quoted market price or dealer quote is not available, fair value is estimated using quoted market prices for similar securities. The amortized cost and estimated fair values of investment securities at December 31, 2020 by contractual maturity are shown in the following tables. (in thousands) Available-for-Sale Held-to-Maturity December 31, 2020 Amortized Cost Fair/Book Value Amortized Cost Fair Value Within One Year $ 5,479 $ 5,512 $ 8,309 $ 8,309 After One Year Through Five Years 25,427 26,096 5,137 5,179 After Five Years Through Ten Years 30,281 30,912 23,493 24,451 After Ten Years 7,426 7,339 31,994 32,110 68,613 69,859 68,933 70,049 Investment Securities Not Due at a Single Maturity Date: Mortgage Backed Securities 720,562 737,873 - - Total $ 789,175 $ 807,732 $ 68,933 $ 70,049 Expected maturities of mortgage-backed securities may differ from contractual maturities because borrowers have the right to call or prepay obligations with or without call or prepayment penalties. The following tables show those investments with gross unrealized losses and their market value aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at the dates indicated. (in thousands) Less Than 12 Months 12 Months or More Total December 31, 2020 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Securities Available-for-Sale US Government Agency SBA $ 1,741 $ 3 $ 6,126 $ 90 $ 7,867 $ 93 Mortgage Backed Securities 20,142 45 177 3 20,319 48 Corporate Securities 4,041 18 - - 4,041 18 Total $ 25,924 $ 66 $ 6,303 $ 93 $ 32,227 $ 159 There were HTM investments with gross unrealized losses at December 31, 2020. Less Than 12 Months 12 Months or More Total December 31, 2019 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Securities Available-for-Sale US Government Agency SBA $ 2,693 $ 6 $ 5,198 $ 107 $ 7,891 $ 113 Mortgage Backed Securities 131,005 88 713 11 131,718 99 Total $ 133,698 $ 94 $ 5,911 $ 118 $ 139,609 $ 212 Securities Held-to-Maturity Obligations of States and Political Subdivisions $ 355 $ 12 $ - $ - $ 355 $ 12 Total $ 355 $ 12 $ - $ - $ 355 $ 12 As of December 31, 2020, the Company held 649 investment securities of which 13 were in an unrealized loss position for less than twelve months and 83 securities were in an unrealized loss position for twelve months or more. Management periodically evaluates each investment security for other-than-temporary impairment relying primarily on industry analyst reports and observations of market conditions and interest rate fluctuations. Management believes it will be able to collect all amounts due according to the contractual terms of the underlying investment securities. Securities of Government Agency and Government Sponsored Entities U.S. Treasury Notes and December 31, 2019 U.S. Government SBA – At December 31, 2020, U.S. Government SBA security investments were in a loss position for less than 12 months and were in a loss position for 12 months or more. The unrealized losses on the Company's investment in U.S. Government SBA were $ at December 31, 2020 and $ at December 31, 2019. The unrealized losses were caused by interest rate fluctuations. Because the decline in market value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell the securities and it is more likely than not that the Company will not have to sell the securities before recovery of their cost basis, the Company did not consider these investments to be other-than-temporarily impaired at December 31, 2020 and December 31, 2019. Mortgage Backed Securities the Company's investment Company's the Company did not consider these investments to be other-than-temporarily impaired at December 31, 2020 or 2019. Corporate Securities - At December 30, 2020, corporate securities were in an unrealized loss position for less than 12 months and ne were in a loss position for 12 months or more. The unrealized losses on the Company’s investment in corporate securities were $ . Changes in the prices of corporate securities are primarily influenced by: (1) changes in market interest rates; (2) changes in perceived credit risk in the general economy or in particular industries; (3) changes in the perceived credit risk of a particular company; and (4) day to day trading supply, demand and liquidity. The Company monitors the status of each of our corporate securities and at the current time does not believe any of them to be exhibiting financial problems that could result in a loss in any individual security. Because the Company does not intend to sell the securities and it is more likely than not that the Company will not have to sell the securities before recovery of their cost basis, the Company does not consider these investments to be other-than-temporarily impaired at December 30, 2020. Obligations of States and Political Subdivisions one-hundred percent The unrealized losses on the Company’s investment in obligation of states and political subdivisions were $0 at December 31, 2020 and $12,000 at December 31, 2019. Management believes that any unrealized losses on the Company's Proceeds from sales and calls of these securities were as follows: (in thousands) Gross Proceeds Gross Gains Gross Losses 2020 $ 5,080 $ 40 $ - 2019 $ 5,300 $ 1 $ - 2018 $ 99,323 $ 78 $ 1,338 Pledged Securities As of December 31, 2020, securities carried at $439.7 million were pledged to secure public deposits, Federal Home Loan Bank (“FHLB”) borrowings, and other government agency deposits as required by law. This amount was $352.5 million at December 31, 2019.

Federal Home Loan Bank Stock an

Federal Home Loan Bank Stock and Other Equity Securities, at Cost	12 Months Ended
	Dec. 31, 2020
Federal Home Loan Bank Stock and Other Equity Securities, at Cost [Abstract]
Federal Home Loan Bank Stock and Other Equity Securities, at Cost	4. Federal Home Loan Bank Stock and Other Equity Securities, at Cost The Bank is a member of the FHLB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock and other equity securities are carried at cost, classified as restricted securities, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. FHLB stock and other equity securities are reported in Interest Receivable and Other Assets on the Company’s Consolidated Balance Sheets and totaled $12.7 million at December 31, 2020 and 2019.

Loans & Leases

Loans & Leases	12 Months Ended
	Dec. 31, 2020
Loans & Leases [Abstract]
Loans & Leases	5. Loans & Leases Loans & leases as of December 31 consisted of the following: (in thousands) 2020 2019 Commercial Real Estate $ 971,326 $ 846,486 Agricultural Real Estate 643,014 625,767 Real Estate Construction 185,741 115,644 Residential 1st Mortgages 299,379 255,253 Home Equity Lines and Loans 34,239 39,270 Agricultural 264,372 292,904 Commercial 374,816 384,795 Consumer & Other (1) 235,529 15,422 Leases 103,117 104,470 Total Gross Loans & Leases 3,111,533 2,680,011 Less: Unearned Income 11,941 6,984 Subtotal 3,099,592 2,673,027 Less: Allowance for Credit Losses 58,862 55,012 Loans & Leases, Net $ 3,040,730 $ 2,618,015 (1) Includes CARES Act Small Business Administration Paycheck Protection Program loans of $ as of December 31, 2020. Paycheck Protection Program (“PPP”) … Under the CARES Act and H.R. 133 (see “Note 2 – Risks and Uncertainties”) the Small Business Administration (“SBA”) was directed by Congress to provide loans to small businesses with less than 500 employees to assist these businesses in meeting their payroll and other financial obligations during the COVID-19 pandemic. These government guaranteed loans are made with an interest rate of 1%, a risk weight of 0% under risk-based capital rules, have a term of 2 years, and under certain conditions the SBA will forgive them. The Bank actively participated in the PPP, and since April 2020, the Bank has funded $ million of loans for small business customers. At December 31, 2020, the portion of loans that were approved for pledging as collateral on borrowing lines with the Federal Home Loan Bank (“FHLB”) and the Federal Reserve Bank (“FRB”) were $808.9 million and $706.2 million, respectively. The borrowing capacity on these loans was $630.5 million from FHLB and $438.1 million from the FRB.

Allowance for Credit Losses

Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2020
Allowance for Credit Losses [Abstract]
Allowance for Credit Losses	6. Allowance for Credit Losses The Company was originally scheduled to implement ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments (“CECL”) as of January 1, 2020. The CARES Act and H.R. 133 provide the election to defer CECL implementation until January 1, 2022. The Company has elected to delay CECL implementation. The following tables show the allocation of the allowance for credit losses at December 31, 2020 and December 31, 2019 by portfolio segment and by impairment methodology (in thousands) December 31, 2020 Commercial Real Estate Agricultural Real Estate Real Estate Construction Residential 1st Mortgages Home Equity Lines & Loans Agricultural Commercial Consumer & Other Leases Unallocated Total Year-To-Date Allowance for Credit Losses: Beginning Balance- January 1, 2020 $ 11,053 $ 15,128 $ 1,949 $ 855 $ 2,675 $ 8,076 $ 11,466 $ 456 $ 3,162 $ 192 $ 55,012 Charge-Offs - - - - (7 ) - (1,101 ) (66 ) - - (1,174 ) Recoveries - 81 - 52 78 - 280 33 - - 524 Provision 16,626 (6,576 ) (306 ) 53 (722 ) (3,262 ) (684 ) (90 ) (1,431 ) 892 4,500 Ending Balance- December 31, 2020 $ 27,679 $ 8,633 $ 1,643 $ 960 $ 2,024 $ 4,814 $ 9,961 $ 333 $ 1,731 $ 1,084 $ 58,862 Ending Balance Individually Evaluated for Impairment - - - 117 8 92 20 52 - - 289 Ending Balance Collectively Evaluated for Impairment 27,679 8,633 1,643 843 2,016 4,722 9,941 281 1,731 1,084 58,573 Loans & Leases: Ending Balance $ 958,980 $ 643,014 $ 185,741 $ 299,379 $ 34,239 $ 264,372 $ 374,816 $ 235,529 $ 103,522 $ - $ 3,099,592 Ending Balance Individually Evaluated for Impairment 104 5,629 - 2,365 158 495 233 254 - - 9,238 Ending Balance Collectively Evaluated for Impairment 958,876 637,385 185,741 297,014 34,081 263,877 374,583 235,275 103,522 - 3,090,354 December 31, 2019 Commercial Real Estate Agricultural Real Estate Real Estate Construction Residential 1st Mortgages Home Equity Lines & Loans Agricultural Commercial Consumer & Other Leases Unallocated Total Year-To-Date Allowance for Credit Losses: Beginning Balance- January 1, 2019 $ 11,609 $ 14,092 $ 1,249 $ 880 $ 2,761 $ 8,242 $ 11,656 $ 494 $ 4,022 $ 261 $ 55,266 Charge-Offs - - - - - - (592 ) (83 ) - - (675 ) Recoveries - 38 - 13 28 - 90 52 - - 221 Provision (556 ) 998 700 (38 ) (114 ) (166 ) 312 (7 ) (860 ) (69 ) 200 Ending Balance- December 31, 2019 $ 11,053 $ 15,128 $ 1,949 $ 855 $ 2,675 $ 8,076 $ 11,466 $ 456 $ 3,162 $ 192 $ 55,012 Ending Balance Individually Evaluated for Impairment 234 - - 118 12 99 137 61 - - 661 Ending Balance Collectively Evaluated for Impairment 10,819 15,128 1,949 737 2,663 7,977 11,329 395 3,162 192 54,351 Loans & Leases: Ending Balance $ 838,570 $ 625,767 $ 115,644 $ 255,253 $ 39,270 $ 292,904 $ 384,795 $ 15,422 $ 105,402 $ - $ 2,673,027 Ending Balance Individually Evaluated for Impairment 4,524 5,654 - 2,368 229 188 1,528 200 - - 14,691 Ending Balance Collectively Evaluated for Impairment 834,046 620,113 115,644 252,885 39,041 292,716 383,267 15,222 105,402 - 2,658,336 The ending balance of loans individually evaluated for impairment includes restructured loans in the amount of $876,000 and $2.6 million at December 31, 2020 and 2019, respectively, which are no longer disclosed or classified as TDR’s, since they were restructured at market terms. The following tables show the loan & lease portfolio, including unearned income allocated by management’s internal risk ratings at December 31, 2020 and December 31, 2019 (in thousands) December 31, 2020 Pass (1) Special Mention Substandard Total Loans Loans & Leases: Commercial Real Estate $ 946,621 $ 7,849 $ 4,510 $ 958,980 Agricultural Real Estate 631,043 400 11,571 643,014 Real Estate Construction 185,741 - - 185,741 Residential 1st Mortgages 298,689 - 690 299,379 Home Equity Lines and Loans 34,058 - 181 34,239 Agricultural 263,781 96 495 264,372 Commercial 373,038 1,060 718 374,816 Consumer & Other 235,063 - 466 235,529 Leases 103,522 - - 103,522 Total $ 3,071,556 $ 9,405 $ 18,631 $ 3,099,592 (1) Includes “Watch” loans of $ million. December 31, 2019 Pass (1) Special Mention Substandard Total Loans Loans & Leases: Commercial Real Estate $ 831,941 $ 6,629 $ - $ 838,570 Agricultural Real Estate 611,792 1,136 12,839 625,767 Real Estate Construction 115,644 - - 115,644 Residential 1st Mortgages 254,459 - 794 255,253 Home Equity Lines and Loans 39,092 - 178 39,270 Agricultural 289,276 2,617 1,011 292,904 Commercial 380,650 3,239 906 384,795 Consumer & Other 14,934 - 488 15,422 Leases 105,402 - - 105,402 Total $ 2,643,190 $ 13,621 $ 16,216 $ 2,673,027 (1) Includes “Watch” loans of $ million. See Note 1. “Significant Accounting Policies – Allowance for Credit Losses” for a description of the internal risk ratings used by the Company. There were no loans & leases outstanding at December 31, 2020 and 2019 rated doubtful or loss. The following tables show an aging analysis of the loan & lease portfolio, including unearned income, by the time past due at December 31, 2020 and December 31, 2019 (in thousands) December 31, 2020 30-59 Days Past Due 60-89 Days Past Due 90 Days and Still Accruing Nonaccrual Total Past Due Current Total Loans & Leases Loans & Leases: Commercial Real Estate $ - $ - $ - $ - $ - $ 958,980 $ 958,980 Agricultural Real Estate - - - 495 495 642,519 643,014 Real Estate Construction - - - - - 185,741 185,741 Residential 1st Mortgages - - - - - 299,379 299,379 Home Equity Lines and Loans - - - - - 34,239 34,239 Agricultural - - - - - 264,372 264,372 Commercial - - - - - 374,816 374,816 Consumer & Other 11 - - - 11 235,518 235,529 Leases - - - - - 103,522 103,522 Total $ 11 $ - $ - $ 495 $ 506 $ 3,099,086 $ 3,099,592 December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 Days and Still Accruing Nonaccrual Total Past Due Current Total Loans & Leases Loans & Leases: Commercial Real Estate $ - $ - $ - $ - $ - $ 838,570 $ 838,570 Agricultural Real Estate - - - - - 625,767 625,767 Real Estate Construction 240 - - - 240 115,404 115,644 Residential 1st Mortgages - - - - - 255,253 255,253 Home Equity Lines and Loans - - - - - 39,270 39,270 Agricultural - - - - - 292,904 292,904 Commercial 77 - - - 77 384,718 384,795 Consumer & Other 35 - - - 35 15,387 15,422 Leases - - - - - 105,402 105,402 Total $ 352 $ - $ - $ - $ 352 $ 2,672,675 $ 2,673,027 Non-accrual loans & leases at December 31, 2020 were $ . There were non-accrual loans & leases at December 31, 2019. Foregone interest income on non-accrual loans & leases, which would have been recognized during the period, if all such loans & leases had been current in accordance with their original terms, totaled $ , $ , and $ at December 31, 2020, 2019, and 2018 respectively. The following tables show information related to impaired loans & leases at and for the year ended December 31, 2020 and December 31, 2019 (in thousands) December 31, 2020 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Real Estate $ 84 $ 84 $ - $ 764 $ 35 Agricultural Real Estate 5,629 5,629 - 5,629 352 Agricultural 3 3 - 2 - Commercial - - - 377 16 $ 5,716 $ 5,716 $ - $ 6,772 $ 403 With an allowance recorded: Commercial Real Estate $ - $ - $ - $ 21 $ 1 Agricultural Real Estate - - - 137 - Residential 1st Mortgages 1,671 1,895 84 1,652 76 Home Equity Lines and Loans 64 75 3 66 4 Agricultural 492 534 92 410 59 Commercial 234 234 13 123 18 Consumer & Other 190 191 56 194 13 $ 2,651 $ 2,929 $ 248 $ 2,603 $ 171 Total $ 8,367 $ 8,645 $ 248 $ 9,375 $ 574 December 31, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Real Estate $ 86 $ 86 $ - $ 90 $ 8 Agricultural Real Estate 5,654 5,654 - 6,069 379 Commercial - - - 8 1 $ 5,740 $ 5,740 $ - $ 6,167 $ 388 With an allowance recorded: Commercial Real Estate $ 2,822 $ 2,822 $ 234 $ 2,853 $ 94 Residential 1st Mortgages 1,562 1,770 74 1,601 73 Home Equity Lines and Loans 68 79 7 71 4 Agricultural 188 188 99 195 6 Commercial 1,528 1,528 137 1,554 53 Consumer & Other 200 200 61 54 - $ 6,368 $ 6,587 $ 612 $ 6,328 $ 230 Total $ 12,108 $ 12,327 $ 612 $ 12,495 $ 618 Total recorded investment shown in the prior table will not equal the total ending balance of loans & leases individually evaluated for impairment on the allocation of allowance table. This is because this table does not include impaired loans that were previously modified in a troubled debt restructuring, are currently performing and are no longer disclosed or classified as TDR’s, since they were restructured at market terms. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law, and was amended and extended by the Consolidated Appropriations Act 2021 (“H.R. 133”) on December 21, 2020. The CARES Act and H.R. 133 provide financial institutions, under specific circumstances, the opportunity to temporarily suspend certain requirements under generally accepted accounting principles related to TDR’s for a limited period of time to account for the effects of COVID-19. In March 2020, a joint statement was issued by federal and state regulatory agencies, after consultation with the FASB, to clarify that short-term loan modifications are not TDRs if made on a good-faith basis in response to COVID-19 to borrowers who were current prior to any relief. Under this guidance, six months is provided as an example of short-term, and current is defined as less than 30 days past due at the time the modification program is implemented. The guidance also provides that these modified loans generally will not be classified as nonaccrual during the term of the modification. Since April 2020, we have restructured $ million of loans under the CARES Act and H.R. 133 guidelines. As of December 31, 2020, $ million of these loans remain in a deferral status, the other loans having returned to making principal and/or interest payments. We believe that these actions will assist these borrowers in getting through these difficult times, but no guaranties can be made that at some time in the future these loans will not be required to be accounted for as a TDR. For borrowers who are 30 days or more past due when enrolling in a loan modification program related to the COVID-19 pandemic, we evaluate the loan modifications under our existing TDR framework, and where such a loan modification would result in a more than insignificant concession to a borrower experiencing financial difficulty, the loan will be accounted for as a TDR and will generally not accrue interest. See “Note 2 – Risks and Uncertainties” for additional information on the CARES Act, H.R. 133 and the impact of COVID-19 on the Company. At December 31, 2020, there were no formal foreclosure proceedings in process for consumer mortgage loans secured by residential real estate properties. At December 31, 2020, the Company allocated $158,000 of specific reserves to $7.9 million of troubled debt restructured loans, all of which were performing. At December 31, 2019, the Company allocated $612,000 of specific reserves to $12.1 million of troubled debt restructured loans, all of which were performing. The Company had no commitments at December 31, 2020 and December 31, 2019 to lend additional amounts to customers with outstanding loans that are classified as troubled debt restructurings. The modification of the terms of such loans included one or a combination of the following: a reduction of the stated interest rate of the loan; an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk; or a permanent reduction of the recorded investment in the loan. Modifications involving a reduction of the stated interest rate of the loan were for 5 years. Modifications involving an extension of the maturity date range from 3 months to 10 years. The following table presents loans by class modified as troubled debt restructured loans for the year ended December 31, 2020 (in thousands) December 31, 2020 Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Residential 1st Mortgages 2 $ 156 $ 156 Agricultural 3 495 495 Commercial 1 224 224 Total 6 $ 875 $ 875 The troubled debt restructurings described above increased the allowance for credit losses by $120,000. There were no charge-offs for the twelve months ended December 31, 2020. During the year ended December 31, 2020, there were no payment defaults on loans modified as troubled debt restructurings within twelve months following the modification. The following table presents loans by class modified as troubled debt restructured loans for the year ended December 31, 2019 (in thousands) December 31, 2019 Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Agricultural 1 $ 201 $ 201 Consumer & Other 1 195 195 Total 2 $ 396 $ 396 The troubled debt restructurings described above increased the allowance for credit losses by $ . There were charge-offs for the twelve months ended December 31, 2019. During the year ended December 31, 2019, there were payment defaults on loans modified as troubled debt restructurings within twelve months following the modification.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2020
Premises and Equipment [Abstract]
Premises and Equipment	7. Premises and Equipment Premises and equipment as of December 31 consisted of the following: (in thousands) 2020 2019 Land and Buildings $ 60,246 $ 53,997 Furniture, Fixtures and Equipment 21,750 21,058 Leasehold Improvement 3,753 3,745 Subtotal 85,749 78,800 Less: Accumulated Depreciation and Amortization 35,602 33,529 Total $ 50,147 $ 45,271 Depreciation and amortization on premises and equipment included in occupancy and equipment expense amounted to $2,769,000, $2,756,000, and $2,421,000 for the years ended December 31, 2020, 2019 and 2018, respectively. Rental income was $434,000, $183,000, and $173,000 for the years ended December 31, 2020, 2019, and 2018, respectively.

Other Real Estate

Other Real Estate	12 Months Ended
	Dec. 31, 2020
Other Real Estate [Abstract]
Other Real Estate	8. Other Real Estate The Bank reported $873,000 in other real estate at December 31, 2020, and December 31, 2019. Other real estate includes property no longer utilized for business operations and property acquired through foreclosure proceedings. These properties are carried at fair value less selling costs determined at the date acquired. Losses, if any, arising from properties acquired through foreclosure are charged against the allowance for loan losses at the time of foreclosure. Subsequent declines in value, periodic holding costs, and net gains or losses on disposition are included in other operating expense as incurred. Other real estate is reported in Interest Receivable and Other Assets on the Company’s Consolidated Balance Sheets.

Time Deposits

Time Deposits	12 Months Ended
	Dec. 31, 2020
Time Deposits [Abstract]
Time Deposits	9. Time Deposits Time Deposits of $250,000 or more as of December 31 were as follows: (in thousands) 2020 2019 Balance $ 185,944 $ 257,392 At December 31, 2020, the scheduled maturities of time deposits were as follows: (in thousands) Scheduled Maturities 2021 $ 373,332 2022 38,620 2023 7,571 2024 715 2025 1,630 Total $ 421,868

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Taxes [Abstract]
Income Taxes	10. Income Taxes Current and deferred income tax expense (benefit) provided for the years ended December 31 consisted of the following: (in thousands) 2020 2019 2018 Current Federal $ 12,174 $ 14,798 $ 2,517 State 9,005 7,733 6,224 Total Current 21,179 22,531 8,741 Deferred Federal (1,115 ) (3,500 ) 5,622 State (847 ) 246 (160 ) Total Deferred (1,962 ) (3,254 ) 5,462 Total Provision for Taxes $ 19,217 $ 19,277 $ 14,203 The total provision for income taxes differs from the federal statutory rate as follows: 2020 2019 2018 (in thousands) Amount Rate Amount Rate Amount Rate Tax Provision at Federal Statutory Rate $ 16,370 21.0 % $ 15,816 21.0 % $ 12,543 21.0 % Interest on Obligations of States and Political Subdivisions exempt from Federal Taxation (350 ) (0.4 %) (358 ) (0.5 %) (338 ) (0.5 %) State and Local Income Taxes, Net of Federal Income Tax Benefit 6,445 8.3 % 6,304 8.4 % 4,791 7.9 % Bank Owned Life Insurance (444 ) (0.6 %) (460 ) (0.6 %) (434 ) (0.7 %) Low-Income Housing Tax Credit (2,655 ) (3.4 %) (2,078 ) (2.8 %) (1,624 ) (2.7 %) Out of Period Adjustment - 0.0 % - 0.0 % (802 ) (1.3 %) Other, Net (149 ) (0.2 %) 53 0.1 % 67 0.1 % Total Provision for Taxes $ 19,217 24.7 % $ 19,277 25.6 % $ 14,203 23.8 % The components of net deferred tax assets as of December 31 are as follows: The net deferred tax assets are reported in Interest Receivable and Other Assets on the Company’s Consolidated Balance Sheet. (in thousands) 2020 2019 Deferred Tax Assets Allowance for Credit Losses $ 17,248 $ 15,925 Accrued Liabilities 8,526 8,452 Deferred Compensation 13,707 14,200 State Franchise Tax 1,891 1,624 Tax Credit Carry Forward - 1,266 Lease Liability 1,454 1,487 Acquired Net Operating Loss 643 673 Fair Value Adjustment on Loans Acquired 237 286 Fair Value Adjustment on ORE Acquired 108 108 PPP Loan Service Fee Income 1,367 - Low-Income Housing Investment 384 286 Other 7 2 Total Deferred Tax Assets $ 45,572 $ 44,309 Deferred Tax Liabilities Premises and Equipment (1,684 ) (1,974 ) Securities Accretion (588 ) (370 ) Unrealized Gain on Securities Available-for-Sale (5,156 ) (935 ) Leasing Activities (17,183 ) (19,226 ) Core Deposit Intangible Asset (1,186 ) (1,372 ) ROU Lease Asset (1,428 ) (1,471 ) Prepaid (45 ) (66 ) Other (1,209 ) (898 ) Total Deferred Tax Liabilities (28,479 ) (26,312 ) Net Deferred Tax Assets $ 17,093 $ 17,997 On March the Coronavirus Aid, Relief and Economic Security Act (CARES Act) was enacted in response to the COVID- pandemic. The CARES Act provides options for accelerating refunds associated with previously paid alternative minimum taxes. The Company benefited from the alternative minimum tax refund provisions of the CARES Act and submitted accelerated refund claims during the year ended December Based upon the level of historical taxable income and projections for future taxable income over the periods during which the deferred tax assets are expected to be deductible, Management believes it is more likely than not we will realize the benefit of the remaining deferred tax assets. The Company and its subsidiaries file income tax returns in the U.S. federal and California jurisdictions. With few exceptions, the Company is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by the tax authorities for the years before 2016.

Short Term Borrowings

Short Term Borrowings	12 Months Ended
	Dec. 31, 2020
Short Term Borrowings [Abstract]
Short Term Borrowings	11. Short Term Borrowings The Company had unused lines of credit available for short-term liquidity purposes of at December and . Federal Funds purchased and advances are generally issued on an overnight basis. There were advances from the FHLB at December 31, 2020 or 2019. There were Federal Funds purchased or advances from the FRB at December 31, 2020 or 2019.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	12 Months Ended
	Dec. 31, 2020
Federal Home Loan Bank Advances [Abstract]
Federal Home Loan Bank Advances	12. Federal Home Loan Bank Advances The Company had no short-term or long-term advances from the Federal Home Loan Bank of San Francisco at December 31, 2020 or 2019. In accordance with the Collateral Pledge and Security Agreement, advances are secured by all FHLB stock held by the Company. At December 31, 2020, $808.9 million in loans were approved for pledging as collateral on borrowing lines with the FHLB. The borrowing capacity on these loans was $630.5 million.

Long-term Subordinated Debentur

Long-term Subordinated Debentures	12 Months Ended
	Dec. 31, 2020
Long-term Subordinated Debentures [Abstract]
Long-term Subordinated Debentures	13. Long-term Subordinated Debentures In December 2003, the Company formed a wholly owned Connecticut statutory business trust, FMCB Statutory Trust I (“Statutory Trust I”), which issued $10.0 million of guaranteed preferred beneficial interests in the Company’s junior subordinated deferrable interest debentures (the “Trust Preferred Securities”). The Company is not considered the primary beneficiary of the trust (variable interest entity), therefore the trust is not consolidated in the Company’s financial statements, but rather the subordinated debentures are shown as a liability. These debentures qualify as Tier 1 capital under current regulatory guidelines. All of the common securities of Statutory Trust I are owned by the Company. The proceeds from the issuance of the common securities and the Trust Preferred Securities were used by FMCB Statutory Trust to purchase $10.3 million of junior subordinated debentures of the Company, which carry a floating rate based on three-month LIBOR plus 2.85%. The debentures represent the sole asset of Statutory Trust I. The Trust Preferred Securities accrue and pay distributions at a floating rate of three-month LIBOR plus 2.85% per annum of the stated liquidation value of $1,000 per capital security. The Company has entered into contractual arrangements which, taken collectively, fully and unconditionally guarantee payment to the extent that Statutory Trust I has funds available therefore of: (i) accrued and unpaid distributions required to be paid on the Trust Preferred Securities; (ii) the redemption price with respect to any Trust Preferred Securities called for redemption by Statutory Trust I; and (iii) payments due upon a voluntary or involuntary dissolution, winding up, or liquidation of Statutory Trust I. The Trust Preferred Securities are mandatorily redeemable upon maturity of the subordinated debentures on December 17, 2033, or upon earlier redemption as provided in the indenture. The Company has the right to redeem the subordinated debentures purchased by Statutory Trust I, in whole or in part, on or after December 17, 2008. As specified in the indenture, if the subordinated debentures are redeemed prior to maturity, the redemption price will be the principal amount and any accrued but unpaid interest. Additionally, if the Company decided to defer interest on the subordinated debentures, the Company would be prohibited from paying cash dividends on the Company’s common stock.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2020
Shareholders' Equity [Abstract]
Shareholders' Equity	14. Shareholders’ Equity In 1998, the Board approved the Company’s first common stock repurchase program. This program has been extended and expanded several times since then, and most recently, on November 6, 2018, the Board of Directors approved an extension of the $20 million stock repurchase program to December 31, 2021. Repurchases under the program may be made from time to time on the open market or through private transactions. The repurchase program also requires that no repurchases may be made if the Bank would not remain “well-capitalized” after the repurchase. There were no stock repurchases made in 2020 or 2019 under the Common Stock Repurchase Plan. On November the Board of Directors of Farmers & Merchants Bancorp approved, and all applicable regulators provided statements of non-objection regarding, the Company’s repurchase and retirement of up to of its outstanding common stock during the quarter of and the half of These repurchases will be done outside of the Company’s current repurchase plan. All repurchases will be made at the then prevailing market prices. In the quarter of the Company repurchased of shares from shareholders. On August 5, 2008, the Board of Directors approved a Share Purchase Rights Plan (the “Rights Plan”), pursuant to which the Company entered into a Rights Agreement dated August 5, 2008, with Computershare as Rights Agent, and the Company declared a dividend of a right to acquire one preferred share purchase right (a “Right”) for each outstanding share of the Company’s common stock, $0.01 par value per share, to stockholders of record at the close of business on August 15, 2008. Generally, the Rights are only triggered and become exercisable if a person or group (the “Acquiring Person”) acquires beneficial ownership of 10 percent or more of the Company’s common stock or announces a tender offer for 10 percent or more of the Company’s common stock. The Rights Plan is similar to plans adopted by many other publicly traded companies. The effect of the Rights Plan is to discourage any potential acquirer from triggering the Rights without first convincing the Company’s Board of Directors that the proposed acquisition is fair to, and in the best interest of, all of the stockholders of the Company. The provisions of the Plan, if triggered by the Acquiring Person, will substantially dilute the equity and voting interest of any potential acquirer unless the Board of Directors approves of the proposed acquisition (under Article XV of the Company’s Certificate of Incorporation, the Board of Directors has the authority to consider any and all factors in determining whether an acquisition is in the best interests of the Company and its stockholders). Each Right, if and when exercisable, will entitle the registered holder to purchase from the Company one one-hundredth The Rights Plan was set to expire on August 5, 2018. On November 19, 2015, the Board of Directors approved a seven-year extension of the term of the Rights Plan. Pursuant to an Amendment to the Rights Agreement dated February 18, 2016, the term of the Rights Plan was extended from August 5, 2018 to August 5, 2025. The extension of the term of the Rights Plan was intended as a means to continue to guard against abusive takeover tactics and was not in response to any particular proposal. The Board also increased the purchase price under the Rights Plan to $1,600 per one one-hundredth Dividends from the Bank constitute the principal source of cash to the Company. The Company is a legal entity separate and distinct from the Bank. Under regulations controlling California state chartered banks, the Bank is, to some extent, limited in the amount of dividends that can be paid to the Company without prior approval of the California DFPI. These regulations require approval if total dividends declared by a state chartered bank in any calendar year exceed the Bank’s net profits for that year combined with its retained net profits for the preceding two calendar years. During the Company issued a combined total shares of common stock to the Bank’s non-qualified deferred compensation retirement plans. All of the shares were issued at a price of per share based upon valuations completed during the quarter of issuance by a nationally recognized bank consulting and advisory firm and in reliance upon the exemption in Section (a) of the Securities Act of as amended, and the regulations promulgated thereunder. The proceeds were contributed to the Bank as equity capital. During 2019, the Company issued a combined total 9,312 shares of common stock to the Bank’s non-qualified deferred compensation retirement plans. All of the shares were issued at prices ranging from $715.00 to $770.00 per share based upon valuations completed during the quarter of issuance by a nationally recognized bank consulting and advisory firm and in reliance upon the exemption in Section 4(a)(2) of the Securities Act of 1933, as amended, and the regulations promulgated thereunder. The proceeds were contributed to the Bank as equity capital. During 2018, the Company issued a combined total 13,520 shares of common stock to the Bank’s non-qualified deferred compensation retirement plans. There were also 2,400 shares issued to individuals during 2018. All of the shares were issued at prices ranging from $635.00 to $690.00 per share based upon valuations completed during the quarter of issuance by a nationally recognized bank consulting and advisory firm and in reliance upon the exemption in Section 4(a)(2) of the Securities Act of 1933, as amended, and the regulations promulgated thereunder. The proceeds were contributed to the Bank as equity capital. The Company and the Bank are subject to various federal regulatory capital requirements under the Basel III Capital Rules. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly discretionary, actions by regulators that, if undertaken, could have a direct material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company and the Bank’s assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. The implementation of Basel III requirements increased the required capital levels that the Company and the Bank must maintain. The final rules included new minimum risk-based capital and leverage ratios, which have been fully phased in. The new minimum capital level requirements applicable to the Company and the Bank under the final rules are: (i) a common equity Tier 1 capital ratio of 4.5% of risk-weighted assets (“RWA”); (ii) a Tier 1 capital ratio of 6% of RWA; (iii) a total capital ratio of 8% of RWA; and (iv) a Tier 1 leverage ratio of 4% of total assets. The final rules also established a “capital conservation buffer” of 2.5% above each of the new regulatory minimum capital ratios, which resulted in the following minimum ratios: (i) a common equity Tier 1 capital ratio of 7.0% of RWA; (ii) a Tier 1 capital ratio of 8.5% of RWA; and (iii) a total capital ratio of 10.5% of RWA. An institution will be subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses if its capital level falls below the buffer amount. The final rules also permit the Company’s subordinated debentures issued in 2003 to continue to be counted as Tier 1 capital. The Company believes that it is currently in compliance with all of these capital requirements and that they will not result in any restrictions on the Company’s business activity. In addition, the most recent notification from the FDIC categorized the Bank as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since that notification that management believes have changed the Bank’s category. (in thousands) Actual Minimum Regulatory Capital Requirements Well Capitalized Under Prompt Corrective Action December 31, 2020 Amount Ratio Amount Ratio Amount Ratio Total Bank Capital to Risk Weighted Assets $ 446,251 12.46 % $ 286,462 8.00 % $ 358,077 10.00 % Total Consolidated Capital to Risk Weighted Assets $ 450,890 12.59 % $ 286,539 8.00 % N/A N/A Total Bank Common Equity Tier 1 Capital Ratio $ 401,313 11.21 % $ 161,135 4.50 % $ 232,750 6.50 % Total Consolidated Common Equity Tier 1 Capital Ratio $ 395,941 11.05 % $ 161,178 4.50 % N/A N/A Tier 1 Bank Capital to Risk Weighted Assets $ 401,313 11.21 % $ 214,846 6.00 % $ 286,462 8.00 % Tier 1 Consolidated Capital to Risk Weighted Assets $ 405,941 11.33 % $ 214,904 6.00 % N/A N/A Tier 1 Bank Capital to Average Assets $ 401,313 9.04 % $ 177,605 4.00 % $ 222,006 5.00 % Tier 1 Consolidated Capital to Average Assets $ 405,941 9.13 % $ 177,820 4.00 % N/A N/A (in thousands) Actual Minimum Regulatory Capital Requirements Well Capitalized Under Prompt Corrective Action December 31, 2019 Amount Ratio Amount Ratio Amount Ratio Total Bank Capital to Risk Weighted Assets $ 399,230 12.33 % $ 259,012 8.00 % $ 323,765 10.00 % Total Consolidated Capital to Risk Weighted Assets $ 400,258 12.36 % $ 259,028 8.00 % N/A N/A Total Bank Common Equity Tier 1 Capital Ratio $ 358,576 11.08 % $ 145,694 4.50 % $ 210,447 6.50 % Total Consolidated Common Equity Tier 1 Capital Ratio $ 349,601 10.80 % $ 145,703 4.50 % N/A N/A Tier 1 Bank Capital to Risk Weighted Assets $ 358,576 11.08 % $ 194,259 6.00 % $ 259,012 8.00 % Tier 1 Consolidated Capital to Risk Weighted Assets $ 359,601 11.11 % $ 194,271 6.00 % N/A N/A Tier 1 Bank Capital to Average Assets $ 358,576 9.89 % $ 145,079 3.00 % $ 181,349 5.00 % Tier 1 Consolidated Capital to Average Assets $ 359,601 9.90 % $ 145,255 3.00 % N/A N/A

Dividends and Basic and Diluted

Dividends and Basic and Diluted Earnings Per Common Share	12 Months Ended
	Dec. 31, 2020
Dividends and Basic and Diluted Earnings Per Common Share [Abstract]
Dividends and Basic and Diluted Earnings Per Common Share	15. Dividends and Basic and Diluted Earnings Per Common Share Total cash dividends during 2020 were $11,700,000 or $14.75 per share of common stock, an increase of 3.9% per share from $11,221,000 or $14.20 per share in 2019. In 2018, cash dividends totaled $11,151,000 or $13.90 per share. Basic earnings per common share amounts are computed by dividing net income by the weighted average number of common shares outstanding for the period. The Company has no securities or other contracts, such as stock options, that could require the issuance of additional common stock. Accordingly, diluted earnings per share are equal to basic earnings per share. The following table calculates the basic and diluted earnings per common share for the periods indicated. ( net income in thousands 2020 2019 2018 Net Income $ 58,734 $ 56,036 $ 45,527 Weighted Average Number of Common Shares Outstanding 793,337 787,227 801,229 Basic and Diluted Earnings Per Common Share $ 74.03 $ 71.18 $ 56.82

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2020
Employee Benefit Plans [Abstract]
Employee Benefit Plans	16. Employee Benefit Plans Profit Sharing Plan The Company, through the Bank, sponsors a Profit Sharing Plan for substantially all full-time employees of the Company with one Executive Retirement Plan and Life Insurance Arrangements The Company, through the Bank, sponsors an Executive Retirement Plan (“ERP”) for certain executive level employees. The ERP is a non-qualified deferred compensation plan and was developed to supplement the Company’s Profit Sharing Plan, which, as a qualified retirement plan, has a ceiling on benefits as set by the Internal Revenue Service. The ERP is comprised of: (1) a Performance Component which makes contributions based upon long-term cumulative profitability and increase in market value of the Company; (2) a Salary Component which makes contributions based upon participant salary levels; and (3) an Equity Component for which contributions are discretionary and subject to Board of Directors approval. The Company maintains a Rabbi Trust to fund, in part, the ERP. The Rabbi Trust is an irrevocable grantor trust to which the Company may contribute assets for the limited purpose of funding a nonqualified deferred compensation plan. The Company may not use the assets of the Rabbi Trust for any purpose other than meeting its obligations under the ERP, however, the assets of the Rabbi Trust remain subject to the claims of its creditors and are included in the consolidated financial statements. The Company contributes cash to the Rabbi Trust from time to time for the sole purpose of funding the ERP. The Rabbi Trust will use any cash the Company contributes to purchase shares of common stock of the Company, and other financial instruments, on the open market. ERP contributions are invested in a mix of financial instruments; however, the Equity Component contributions are invested primarily in common stock of the Company. The Company expensed $6.8 million to the ERP during the year ended December 31, 2020, $6.6 million during the year ended December 31, 2019 and $6.2 million during the year ended December 31, 2018. The Company’s carrying value of the liability under the ERP was $56.7 million as of December 31, 2020 and $50.5 million as of December 31, 2019. The Company’s shares of common stock held as investments in the Rabbi Trust of the ERP as of December 31, 2020 and 2019 totaled 52,980 and 48,133 with an historical cost basis of $31.2 million and $29.1 million, respectively. All amounts have been fully funded into the Rabbi Trust as of December 31, 2020 and 2019. The consolidated investments held in the Rabbi Trust are recorded at fair value with changes in unrealized gains or losses recorded within non-interest income and the equal and offsetting charges in the related liability are recorded in non-interest expense in the consolidated statements of income. Net gains on ERP plan investments were $1.8 million in 2020 compared to net gains of $2.6 million in 2019. Balances in non-qualified deferred compensation plans may be invested in financial instruments whose market value fluctuates based upon trends in interest rates and stock prices. The Company has purchased single premium life insurance policies on the lives of certain key employees of the Company. These policies provide: (1) financial protection to the Company in the event of the death of a key employee; and (2) significant income to the Company to offset the expense associated with the Executive Retirement Plan and other employee benefit plans, since the interest earned on the cash surrender value of the policies is tax exempt as long as the policies are used to finance employee benefits. As compensation to each employee for agreeing to allow the Company to purchase an insurance policy on his or her life, split dollar agreements have been entered into with those employees. These agreements provide for a division of the life insurance death proceeds between the Company and each employee’s designated beneficiary or beneficiaries. The Company earned tax-exempt interest on the life insurance policies of $2.1 million for the year ended December 31, 2020, $2.0 million for the year ended December 31, 2019, and $1.9 million for the year ended December 31, 2018. As of December 31, 2020 and 2019, the total cash surrender value of the insurance policies was $69.2 million and $67.1 million, respectively. Senior Management Retention Plan The Company, through the Bank, sponsors a Senior Management Retention Plan (“SMRP”) for certain senior level employees. The SMRP is a non-qualified deferred compensation plan and was developed to supplement the Company’s Profit Sharing Plan, which, as a qualified retirement plan, has a ceiling on benefits as set by the Internal Revenue Service. All contributions are discretionary and subject to the Board of Directors approval. The Company expensed $2.3 million to the SMRP during the year ended December 31, 2020, $1.3 million during the year ended December 31, 2019 and $1.5 million during the year ended December 31, 2018. The Company’s carrying value of the liability under the SMRP was $8.6 million as of December 31, 2020 and $6.3 million as of December 31, 2019. The Company’s shares of stock held as investments in the Rabbi Trust of the SMRP as of December 31, 2020 and December 31, 2019 totaled 12,548 and 9,822 shares with an historical cost basis of $7.9 million and $5.8 million, respectively. All amounts have been fully funded into the Rabbi Trust as of December 31, 2020 and 2019. The consolidated investments held in the Rabbi Trust are recorded at fair value with changes in unrealized gains or losses recorded within non-interest income and the equal and offsetting charges in the related liability are recorded in non-interest expense in the consolidated statements of income. Net gains on SMRP plan investments were $0.1 million in 2020 compared to zero in 2019. Balances in non-qualified deferred compensation plans may be invested in financial instruments whose market value fluctuates based upon trends in interest rates and stock prices .

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2020
Fair Value Measurements [Abstract]
Fair Value Measurements	17. Fair Value Measurements The Company follows the “Fair Value Measurement and Disclosures” topic of the FASB ASC, which establishes a framework for measuring fair value in U.S. GAAP and expands disclosures about fair value measurements. This standard applies whenever other standards require, or permit, assets or liabilities to be measured at fair value but does not expand the use of fair value in any new circumstances. In this standard, the FASB clarifies the principle that fair value should be based on the assumptions market participants would use when pricing the asset or liability. In support of this principle, this standard establishes a fair value hierarchy that prioritizes the information used to develop those assumptions. The fair value hierarchy is as follows: Level 1 inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the entity has the ability to access at the measurement date. Level 2 inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability, such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. Management monitors the availability of observable market data to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. Management evaluates the significance of transfers between levels based upon the nature of the financial instrument and size of the transfer relative to total assets, total liabilities or total earnings. Securities classified as available-for-sale are reported at fair value on a recurring basis utilizing Level 1, 2 and 3 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. The Company does not record all loans & leases at fair value on a recurring basis. However, from time to time, a loan or lease is considered impaired and an allowance for credit losses is established. Once a loan or lease is identified as individually impaired, management measures impairment in accordance with the “Receivable” topic of the FASB ASC. The fair value of impaired loans or leases is estimated using one of several methods, including collateral value when the loan is collateral dependent, market value of similar debt, enterprise value, and discounted cash flows. Impaired loans & leases not requiring an allowance represent loans & leases for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans & leases. Impaired loans & leases where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. The fair value of collateral dependent impaired loans is generally based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including sales comparison, cost and the income approach. Adjustments are often made in the appraisal process by the appraisers to take in to account differences between the comparable sales and income and other available data. Such adjustments can be significant and typically result in a Level 3 classification of the inputs for determining fair value. The valuation technique used for Level 3 nonrecurring impaired loans is primarily the sales comparison approach less selling costs of 10%. Other Real Estate (“ORE”) is reported at fair value on a non-recurring basis. Fair values are based on recent real estate appraisals. These appraisals may use a single valuation approach or a combination of approaches including sales comparison, cost and the income approach. Adjustments are often made in the appraisal process by the appraisers to take in to account differences between the comparable sales and income and other available data. Such adjustments can be significant and typically result in a Level 3 classification of the inputs for determining fair value. The valuation technique used for Level 3 nonrecurring ORE is primarily the sales comparison approach less selling costs of 10%. The following tables present information about the Company’s assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value for the periods indicated. Fair Value Measurements At December 31, 2020, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available-for-Sale Securities: US Treasury Notes $ 15,288 $ 15,288 $ - $ - US Government Agency SBA 8,160 - 8,160 - Mortgage Backed Securities 737,873 - 737,873 - Corporate Securities 45,919 - 45,919 - Other 492 182 310 - Total Assets Measured at Fair Value On a Recurring Basis $ 807,732 $ 15,470 $ 792,262 $ - Fair Value Measurements At December 31, 2019, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available-for-Sale Securities: US Treasury Notes $ 54,995 $ 54,995 $ - $ - US Government Agency SBA 10,798 - 10,798 - Mortgage Backed Securities 441,078 - 441,078 - Other 515 205 310 - Total Assets Measured at Fair Value On a Recurring Basis $ 507,386 $ 55,200 $ 452,186 $ - Fair values for Level 2 available-for-sale investment securities are based on quoted market prices for similar securities. During the year ended December 31, 2020, there were no transfers in or out of level 1, 2, or 3. The following tables present information about the Company’s impaired loans & leases and other real estate, classes of assets or liabilities that the Company carries at fair value on a non-recurring basis, and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value for the periods indicated. Not all impaired loans & leases are carried at fair value. Impaired loans & leases are only included in the following tables when their fair value is based upon an appraisal of the collateral, and if that appraisal results in a partial charge-off or the establishment of a specific reserve. Fair Value Measurements At December 31, 2020, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Impaired Loans: Residential 1st Mortgage $ 1,584 $ - $ - $ 1,584 Home Equity Lines and Loans 61 - - 61 Agricultural 400 - - 400 Commercial 213 - - 213 Consumer 138 - - 138 Total Impaired Loans 2,396 - - 2,396 Other Real Estate: Real Estate Construction 873 - - 873 Total Other Real Estate 873 - - 873 Total Assets Measured at Fair Value On a Non-Recurring Basis $ 3,269 $ - $ - $ 3,269 Fair Value Measurements At December 31, 2019, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Impaired Loans: Commercial Real Estate $ 2,588 $ - $ - $ 2,588 Residential 1st Mortgage 1,403 - - 1,403 Home Equity Lines and Loans 142 - - 142 Agricultural 88 - - 88 Commercial 1,391 - - 1,391 Consumer 139 - - 139 Total Impaired Loans 5,751 - - 5,751 Other Real Estate: Real Estate Construction 873 - - 873 Total Other Real Estate 873 - - 873 Total Assets Measured at Fair Value On a Non-Recurring Basis $ 6,624 $ - $ - $ 6,624 The Company’s property appraisals are primarily based on the sales comparison approach and the income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property. The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2020 and 2019: December 31, 2020 (in thousands) Fair Value Valuation Technique Unobservable Inputs Range, Weighted Avg. Impaired Loans: Residential 1st Mortgage $ 1,584 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 0.72% - 4.13%, 2.57 % Home Equity Lines and Loans $ 61 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 1.1% - 1.4%, 1.25 % Agricultural $ 400 Income Approach Capitalization Rate 10%, 10 % Commercial $ 213 Income Approach Capitalization Rate 10%, 10 % Consumer $ 138 Income Approach Adjustment for Difference Between Comparable Sales 10%, 10 % Other Real Estate: Real Estate Construction $ 873 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 10%, 10 % December 31, 2019 (in thousands) Fair Value Valuation Technique Unobservable Inputs Range, Weighted Avg. Impaired Loans: Commercial Real Estate $ 2,588 Income Approach Capitalization Rate 3.3 % Residential 1st Mortgages $ 1,403 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 0.8% - 6.4%, 3 % Home Equity Lines and Loans $ 142 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 1% - 2%, 1.3 % Agricultural $ 88 Income Approach Capitalization Rate 4.3 % Commercial $ 1,391 Income Approach Capitalization Rate 3.3 % Consumer $ 139 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 40.6 % Other Real Estate: Real Estate Construction $ 873 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 10 %

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2020
Fair Value of Financial Instruments [Abstract]
Fair Value of Financial Instruments	18. Fair Value of Financial Instruments U.S. GAAP requires disclosure of fair value information about financial instruments, whether or not recognized on the balance sheet, for which it is practical to estimate that value. The estimated fair value amounts have been determined by the Company using available market information and appropriate valuation methodologies. The use of assumptions and various valuation techniques, as well as the absence of secondary markets for certain financial instruments, will likely reduce the comparability of fair value disclosures between financial institutions. In some cases, book value is a reasonable estimate of fair value due to the relatively short period of time between origination of the instrument and its expected realization. The fair value of loans held for investment, excluding previously presented impaired loans measured at fair value on a non-recurring basis, is estimated using discounted cash flow analyses consistent with ASC 820. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, risk premium, credit, and nonperformance risk of the loans. Loans are considered a Level 3 classification. The following tables summarize the carrying value and estimated fair value of financial instruments for the periods indicated: Fair Value of Financial Instruments Using December 31, 2020 (in thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value Assets: Cash and Cash Equivalents $ 383,837 $ 383,837 $ - $ - $ 383,837 Investment Securities Available-for-Sale 807,732 15,470 792,262 - 807,732 Investment Securities Held-to-Maturity 68,933 - 26,262 43,787 70,049 Loans & Leases, Net 3,040,730 - - 3,045,911 3,045,911 Accrued Interest Receivable 20,333 - 20,333 - 20,333 Liabilities: Deposits 4,060,267 3,638,400 - 422,840 4,061,240 Subordinated Debentures 10,310 - 6,888 - 6,888 Accrued Interest Payable 1,383 - 1,383 - 1,383 Fair Value of Financial Instruments Using December 31, 2019 (in thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value Assets: Cash and Cash Equivalents $ 294,758 $ 294,758 $ - $ - $ 294,758 Investment Securities Available-for-Sale 507,386 55,200 452,186 - 507,386 Investment Securities Held-to-Maturity 60,229 - 31,253 29,844 61,097 Loans & Leases, Net 2,618,015 - - 2,584,805 2,584,805 Accrued Interest Receivable 16,733 - 16,733 - 16,733 Liabilities: Deposits 3,278,019 2,760,097 - 517,172 3,277,269 Subordinated Debentures 10,310 - 7,325 - 7,325 Accrued Interest Payable 2,795 - 2,795 - 2,795

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies [Abstract]
Commitments and Contingencies	19. Commitments and Contingencies In the normal course of business, the Company enters into financial instruments with off balance sheet risk in order to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These instruments include commitments to extend credit, letters of credit, and other types of financial guarantees. The Company had the following off balance sheet commitments as of the dates indicated. (in thousands) December 31, 2020 December 31, 2019 Commitments to Extend Credit $ 1,040,844 $ 919,982 Letters of Credit 18,846 20,346 Performance Guarantees Under Interest Rate Swap Contracts Entered Into Between Our Borrowing Customers and Third Parties 2,786 1,513 The Company’s exposure to credit loss in the event of nonperformance by the other party with regard to standby letters of credit, undisbursed loan commitments, and financial guarantees is represented by the contractual notional amount of those instruments. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. The Company uses the same credit policies in making commitments and conditional obligations as it does for recorded balance sheet items. The Company may or may not require collateral or other security to support financial instruments with credit risk. Evaluations of each customer’s creditworthiness are performed on a case-by-case basis. Standby letters of credit are conditional commitments issued by the Company to guarantee performance of or payment for a customer to a third party. Outstanding standby letters of credit have maturity dates ranging from 1 to 25 months with final expiration in January 2022. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. In the ordinary course of business, the Company becomes involved in litigation arising out of its normal business activities. Management, after consultation with legal counsel, believes that the ultimate liability, if any, resulting from the disposition of such claims would not be material in relation to the financial position of the Company. The Company may be required to maintain average reserves on deposit with the Federal Reserve Bank primarily based on deposits outstanding. Reserve requirements are offset by the Company’s vault cash and deposit balances maintained with the Federal Reserve Bank.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Leases	20. Leases Lessee – Operating Leases Effective January 1, 2019, the Company adopted the provisions of Accounting Standards Update (“ASU”) No. 2016-02, “Leases (Topic 842),” for all open leases with a term greater than one year as of the adoption date, using the modified retrospective approach. Prior comparable periods are presented in accordance with previous guidance under Accounting Standards Codification ASC 840. Operating leases in which we are the lessee are recorded as operating lease right-of-use (“ROU”) assets and operating lease liabilities, included in other assets other liabilities Operating lease ROU assets represent our right to use an underlying asset during the lease term and operating lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and operating lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using a discount rate that represents our incremental borrowing rate at the lease commencement date. ROU assets are further adjusted for lease incentives. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term, and is recorded net in occupancy expense in the consolidated statements of income. Our leases relate primarily to office space and bank branches with remaining lease terms of generally 1 to 10 years. Certain lease arrangements contain extension options which typically range from 5 to 10 years at the then fair market rental rates. ASC 842 requires lessees to evaluate whether option periods, if available, will be exercised in order to determine the full life of the lease. The Company used the first option period, unless it is a relatively new lease that has a long initial lease term or other extenuating circumstances. As of December 31, 2020, operating lease ROU assets and liabilities were $4.80 million and $4.92 million, respectively. Operating lease expenses totaled $833,000 for the year ended December 31, 2020. As of December 31, 2019, operating lease ROU assets and liabilities were $ million and $ million, respectively. Operating leases totaled $ for the year ended December 31, 2019. The table below summarizes the information related to our operating leases: (in thousands except for percent and period data) Year Ended December 31, 2020 Year Ended December 31, 2019 Cash Paid for Amounts Included in the Measurement of Lease Liabilities Operating Cash Flow from Operating Leases $ 795 $ 783 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities $ - $ 5,645 Weighted-Average Remaining Lease Term - Operating Leases, in Years 7.33 7.88 Weighted-Average Discount Rate - Operating Leases 2.9 % 3.2 % The table below summarizes the maturity of remaining lease liability: (in thousands) December 31, 2020 2021 727 2022 695 2023 705 2024 721 2025 731 2026 and thereafter 1,907 Total Lease Payments 5,486 Less: Interest (568 ) Present Value of Lease Liabilities $ 4,918 As of December 31, 2020, we have no additional operating leases for office space that have not yet commenced or that are anticipated to commence during the first quarter of 2021. Lessor - Direct Financing Leases The Company is the lessor in direct finance lease arrangements. Leases are recorded at the principal balance outstanding, net of unearned income and charge-offs. Interest income is recognized using the interest method. Leases typically have a maturity of three Lease payments due to the Company are typically fixed and paid in equal installments over the lease term. Variable lease payments that do not depend on an index or a rate (e.g., property taxes) that are paid directly by the Company are minimal. The majority of property taxes are paid directly by the client to a third party and are not considered part of variable payments and therefore are not recorded by the Company. As a lessor, the Company leases certain types of agriculture equipment, solar equipment, construction equipment and other equipment to its customers. The Company’s net investment in direct financing leases was $103.5 million at December 31, 2020 and $105.4 million at December 31, 2019.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2020
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	21. Recent Accounting Pronouncements Accounting Guidance Pending Adoption at December 31, 2020 The following paragraphs provide descriptions of newly issued but not yet effective accounting standards that could have a material effect on the Company’s financial position or results of operations. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740). In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848)

Parent Company Financial Inform

Parent Company Financial Information	12 Months Ended
	Dec. 31, 2020
Parent Company Financial Information [Abstract]
Parent Company Financial Information	22. Parent Company Financial Information The following financial information is presented as of December 31 for the periods indicated. Farmers & Merchants Bancorp Condensed Balance Sheets (in thousands) 2020 2019 Cash $ 4,551 $ 1,341 Investment in Farmers & Merchants Bank of Central California 429,037 378,271 Investment Securities 434 411 Other Assets 832 102 Total Assets $ 434,854 $ 380,125 Subordinated Debentures $ 10,310 $ 10,310 Liabilities 879 519 Shareholders’ Equity 423,665 369,296 Total Liabilities and Shareholders’ Equity $ 434,854 $ 380,125 Farmers & Merchants Bancorp Condensed Statements of Income Year Ended December 31, (in thousands) 2020 2019 2018 Equity (Loss) in Undistributed Earnings in Farmers & Merchants Bank of Central California $ 40,597 $ 44,571 $ (26,488 ) Dividends from Subsidiary 19,874 13,166 73,010 Interest Income 11 17 16 Other Expenses, Net (2,477 ) (2,416 ) (1,527 ) Tax Benefit 729 698 516 Net Income $ 58,734 $ 56,036 $ 45,527 Farmers & Merchants Bancorp Condensed Statements of Cash Flows Year Ended December 31, (in thousands) 2020 2019 2018 Cash Flows from Operating Activities: Net Income $ 58,734 $ 56,036 $ 45,527 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: (Equity) Loss in Undistributed Net Earnings from Subsidiary (40,597 ) (44,571 ) 26,488 Net (Increase) in Other Assets (753 ) (160 ) (125 ) Net Increase (Decrease) in Liabilities 360 222 (942 ) Net Cash Provided by Operating Activities 17,744 11,527 70,948 Investing Activities: Payments for Business Acquisition - - (28,642 ) Payments for Investments in Non-Qualified Retirement Plan (403 ) (6,273 ) (10,503 ) Net Cash Used by Investing Activities (403 ) (6,273 ) (39,145 ) Financing Activities: Stock Repurchased (2,834 ) - (31,152 ) Issuance of Common Stock 403 6,973 10,503 Cash Dividends (11,700 ) (11,221 ) (11,151 ) Net Cash Used by Financing Activities (14,131 ) (4,248 ) (31,800 ) Increase in Cash and Cash Equivalents 3,210 1,006 3 Cash and Cash Equivalents at Beginning of Year 1,341 335 332 Cash and Cash Equivalents at End of Year $ 4,551 $ 1,341 $ 335

Quarterly Unaudited Financial D

Quarterly Unaudited Financial Data	12 Months Ended
	Dec. 31, 2020
Quarterly Unaudited Financial Data [Abstract]
Quarterly Unaudited Financial Data	23. Quarterly Unaudited Financial Data The following tables set forth certain unaudited historical quarterly financial data for each of the eight consecutive quarters in 2020 and 2019. This information is derived from unaudited consolidated financial statements that include, in management’s opinion, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation when read in conjunction with the consolidated financial statements and notes thereto included elsewhere in this Form 10-K. 2020 (in thousands except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter Total Total Interest Income $ 38,689 $ 37,967 $ 39,793 $ 42,203 $ 158,652 Total Interest Expense 3,263 2,552 2,094 1,582 9,491 Net Interest Income 35,426 35,415 37,699 40,621 149,161 Provision for Credit Losses - 300 1,700 2,500 4,500 Net Interest Income After Provision for Credit Losses 35,426 35,115 35,999 38,121 144,661 Total Non-Interest Income 2,927 3,514 4,539 4,716 15,696 Total Non-Interest Expense 19,790 19,787 20,783 22,046 82,406 Income Before Income Taxes 18,563 18,842 19,755 20,791 77,951 Provision for Income Taxes 4,441 4,533 4,945 5,298 19,217 Net Income $ 14,122 $ 14,309 $ 14,810 $ 15,493 $ 58,734 Basic and Diluted Earnings Per Common Share $ 17.80 $ 18.03 $ 18.66 $ 19.54 $ 74.03 2019 (in thousands except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter Total Total Interest Income $ 37,173 $ 38,626 $ 38,810 $ 39,099 $ 153,708 Total Interest Expense 2,966 3,253 3,530 3,445 13,194 Net Interest Income 34,207 35,373 35,280 35,654 140,514 Provision for Credit Losses - 200 - - 200 Net Interest Income After Provision for Credit Losses 34,207 35,173 35,280 35,654 140,314 Total Non-Interest Income 4,464 4,400 3,974 4,403 17,241 Total Non-Interest Expense 20,445 20,565 20,856 20,376 82,242 Income Before Income Taxes 18,226 19,008 18,398 19,681 75,313 Provision for Income Taxes 4,677 4,903 4,660 5,037 19,277 Net Income $ 13,549 $ 14,105 $ 13,738 $ 14,644 $ 56,036 Basic and Diluted Earnings Per Common Share $ 17.27 $ 17.92 $ 17.45 $ 18.54 $ 71.18

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accounting and reporting policies of the Company conform to U.S. GAAP and prevailing practice within the banking industry. The accompanying consolidated financial statements and notes thereto have been prepared in accordance with accounting principles generally accepted in the United States of America for financial information. The accompanying consolidated financial statements include the accounts of the Company and the Company’s wholly owned subsidiaries, F & M Bancorp, Inc. and the Bank, along with the Bank’s wholly owned subsidiaries, Farmers & Merchants Investment Corporation and Farmers/Merchants Corp. Significant inter-company transactions have been eliminated in consolidation. The preparation of consolidated financial statements in conformity with U.S. GAAP and under the rules and regulations of U.S. Securities and Exchange Commission, requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates Certain amounts in the prior years' financial
Accounting Guidance Pending Adoption	Accounting Guidance Pending Adoption at December 31, 2020 The following paragraphs provide descriptions of newly issued but not yet effective accounting standards that could have a material effect on the Company’s financial position or results of operations. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU will require the earlier recognition of credit losses on loans and other financial instruments based on an expected loss model, replacing the incurred loss model that is currently in use. Under the new guidance, an entity will measure all expected credit losses for financial instruments held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. The expected loss model will apply to loans and leases, unfunded lending commitments, held-to-maturity debt securities and other debt instruments measured at amortized cost. The impairment model for available-for-sale debt securities will require the recognition of credit losses through a valuation allowance when fair value is less than amortized cost, regardless of whether the impairment is considered to be other-than-temporary. During 2019, the Company completed an assessment of its CECL data and system needs, and engaged a third-party vendor to assist in developing a CECL model. The Company, in conjunction with this vendor, researched and analyzed modeling standards, loan segmentation, as well as potential external inputs to supplement our historical loss history. Model validation began in the third quarter, enabling the Company to complete parallel runs using data beginning with the second quarter of 2019 The new guidance had been effective on January 1, 2020. However, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) and H.R. 133, resulted in federal banking regulators issuing an interim final rule allowing banks the option of delaying the implementation of CECL until January 1, 2022. In addition, the national banking regulators have issued a joint statement allowing financial institutions to mitigate the effects of CECL in their regulatory capital calculations for up to two years. The Company has elected to delay CECL adoption, but continues to run its CECL model quarterly to accumulate data for the ultimate implementation. Management is currently evaluating the impact that the standard will have on its consolidated financial statements
Out of Period Adjustment	Out of Period Adjustment During the quarter ended September 30, 2018, while preparing 2017 tax returns, the Company identified certain items related to IRS Code Section 162(m) that were not appropriately reflected in the 2014 through 2017 Provision for Income Taxes. To reflect this change, the cumulative impact of $990,000 was recognized by reducing the Company’s Provision for Income Taxes in the third quarter of 2018. After evaluating the quantitative and qualitative aspects of the adjustment, the Company concluded that its 2017 financial statements were not materially misstated and, therefore, no restatement was required.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of the Consolidated Statements of Cash Flows, the Company has defined cash and cash equivalents as those amounts included in the balance sheet captions Cash and Due from Banks, Interest Bearing Deposits with Banks and Federal Funds Sold, which have original maturity dates of 3 months or less. For these instruments, the carrying amount is a reasonable estimate of fair value.
Investment Securities	Investment Securities Investment securities are classified at the time of purchase as held-to-maturity (“HTM”) if it is management’s intent and the Company has the ability to hold the securities until maturity. These securities are carried at cost, adjusted for amortization of premium over the term through the earliest call date and accretion of discount using a level yield of interest over the estimated remaining period until maturity. Losses, reflecting a decline in value judged by the Company to be other than temporary, are recognized in the period in which they occur. Securities are classified as available-for-sale (“AFS”) if it is management’s intent, at the time of purchase, to hold the securities for an unstated period of time and may be used as part of the Company’s asset/liability management strategy. These securities are reported at fair value with aggregate unrealized gains or losses excluded from income and included as a separate component of shareholders’ equity, net of related income taxes. Fair values are based on quoted market prices or broker/dealer price quotations on a specific identification basis. Gains or losses on the sale of these securities are computed using the specific identification method. Trading securities, if any, are acquired for short-term appreciation and are recorded in a trading portfolio and are carried at fair value, with unrealized gains and losses recorded in earnings. Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss, and the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: (1) OTTI related to credit loss, which must be recognized in the income statement; and (2) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. Equity securities, are carried at fair value, with unrealized and realized gains recognized through earnings
Loans & Leases	Loans & Leases Loans & leases are reported at the principal amount outstanding net of unearned discounts and deferred loan & lease fees and costs. Interest income on loans & leases is accrued daily on the outstanding balances using the simple interest method. Loan & lease origination fees are deferred and recognized over the contractual life of the loan or lease as an adjustment to the yield. Loans & leases are placed on non-accrual status when the collection of principal or interest is in doubt or when they become past due for 90 days or more unless they are both well-secured and in the process of collection. For this purpose, a loan or lease is considered well-secured if it is collateralized by property having a net realizable value in excess of the amount of the loan or lease or is guaranteed by a financially capable party. When a loan or lease is placed on non-accrual status, the accrued and unpaid interest receivable is reversed and charged against current income; thereafter, interest income is recognized only as it is collected in cash. Additionally, cash would be applied to principal if all principal was not expected to be collected. Loans & leases placed on non-accrual status are returned to accrual status when the loans or leases are paid current as to principal and interest and future payments are expected to be made in accordance with the contractual terms of the loan or lease. A loan or lease is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due, including principal and interest, according to the contractual terms of the original agreement. Impaired loans & leases are either: (1) non-accrual loans & leases; or (2) restructured loans & leases that are still accruing interest. Loans or leases determined to be impaired are individually evaluated for impairment. When a loan or lease is impaired, the Company measures impairment based on the present value of expected future cash flows discounted at the loan or lease's effective interest rate, except that as a practical expedient, it may measure impairment based on a loan or lease's observable market price, or the fair value of the collateral if the loan or lease is collateral dependent. A loan or lease is collateral dependent if the repayment of the loan or lease is expected to be provided solely by the underlying collateral A restructuring of a loan or lease constitutes a troubled debt restructuring (TDR) if the Company for economic or legal reasons related to the borrower’s (the term “borrower” is used herein to describe a customer who has entered into either a loan or lease transaction) financial difficulties grants a concession to the borrower that it would not otherwise consider. Restructured loans & leases typically present an elevated level of credit risk as the borrowers are not able to perform according to the original contractual terms. If the restructured loan or lease was current on all payments at the time of restructure and management reasonably expects the borrower will continue to perform after the restructure, management may keep the loan or lease on accrual. Loans & leases that are on nonaccrual status at the time they become TDR, remain on nonaccrual status until the borrower demonstrates a sustained period of performance, which the Company generally believes to be six Generally, the Company will not restructure loans or leases for borrowers unless: (1) the existing loan or lease is brought current as to principal and interest payments; and (2) the restructured loan or lease can be underwritten to reasonable underwriting standards. If these standards are not met other actions will be pursued (e.g., foreclosure) to collect outstanding loan or lease amounts. After restructure, a determination is made whether the loan or lease will be kept on accrual status based upon the underwriting and historical performance of the restructured credit. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law, and was amended and extended by the Consolidated Appropriations Act of 2021 (“H.R. 133”) on December 21, 2020. The CARES Act and H.R. 133 provide financial institutions, under specific circumstances, the opportunity to temporarily suspend certain requirements under generally accepted accounting principles related to modifications for a limited period of time to account for the effects of COVID-19. In March 2020, a joint statement was issued by federal and state regulatory agencies, after consultation with the FASB, to clarify that short-term loan modifications are not TDRs if made on a good-faith basis in response to COVID-19 to borrowers who were current prior to any relief. Under this guidance, six months is provided as an example of short-term, and current is defined as less than 30 days past due at the time the modification program is implemented. The guidance also provides that these modified loans generally will not be classified as nonaccrual during the term of the modification. See “Note 2 – Risks and Uncertainties” for additional information on the CARES Act, H.R. 133 and the impact of COVID-19 on the Company
Allowance for Credit Losses	Allowance for Credit Losses The allowance for credit losses is an estimate of probable incurred credit losses inherent in the Company's loan & lease portfolio as of the balance sheet date The determination of the general reserve for loans & leases that are collectively evaluated for impairment is based on estimates made by management, to include, but not limited to, consideration of historical losses by portfolio segment, internal asset classifications, qualitative factors that include economic trends in the Company's service areas, industry experience and trends, geographic concentrations, estimated collateral values, the Company's underwriting policies, the character of the loan & lease portfolio, and probable losses inherent in the portfolio taken as a whole The Company maintains a separate allowance for each portfolio segment (loan & lease type). These portfolio segments include: (1) commercial real estate; (2) agricultural real estate; (3) real estate construction (including land and development loans); (4) residential 1 st determine the Company's overall allowance, which is included on the consolidated balance The Company assigns a risk rating to all loans & leases and periodically performs detailed reviews of all such loans & leases over a certain threshold to identify credit risks and assess overall collectability. For smaller balance loans & leases, such as consumer and residential real estate, a credit grade is established at inception, and then updated only when the loan or lease becomes contractually delinquent or when the borrower requests a modification. For larger balance loans, management monitors and analyzes the financial condition of borrowers and guarantors, trends in the industries in which borrowers operate and the fair values of collateral securing these loans & leases. These credit quality indicators are used to assign a risk rating to each individual loan or lease. These risk ratings are also subject to examination by independent specialists engaged by the Company. The risk ratings can be grouped into five major categories, defined as follows: Pass and Watch – A pass loan or lease is a strong credit with no existing or known potential weaknesses deserving of management's close attention. This category also includes “Watch” loans, which is a loan with an emerging weakness in either the individual credit or industry that requires additional attention. A credit may also be classified Watch if cash flows have not yet stabilized, such as in the case of a development project. Included in this category are all loans in which the Bank entered into a CARES Act modification Special Mention – A special mention loan or lease has potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or lease or in the Company's credit position at some future date. Special mention loans & leases are not adversely classified and do not expose the Company to sufficient risk to warrant adverse classification Substandard – A substandard loan or lease is not adequately protected by the current financial condition and paying capacity of the borrower or the value of the collateral pledged, if any. Loans or leases classified as substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Well-defined weaknesses include a project's lack of marketability, inadequate cash flow or collateral support, failure to complete construction on time or the project's failure to fulfill economic expectations. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected Doubtful – Loans or leases classified doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, based on currently known facts, conditions and values, highly questionable or improbable. Loss – Loans or leases classified as loss are considered uncollectible. Once a loan or lease becomes delinquent and repayment becomes questionable, the Company will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Company will estimate its probable loss and immediately charge-off some or all of the balance. The general reserve component of the allowance for credit losses also consists of reserve factors that are based on management's assessment Commercial Real Estate – Commercial real estate mortgage loans are generally considered to possess a higher inherent risk of loss than the Company’s commercial, agricultural and consumer loan types. Adverse economic developments or an overbuilt market impact commercial real estate projects and may result in troubled loans. Trends in vacancy rates of commercial properties impact the credit quality of these loans. High vacancy rates reduce operating revenues and the ability for properties to produce sufficient cash flow to service debt obligations. Real Estate Construction – Real estate construction loans, including land loans, are generally considered to possess a higher inherent risk of loss than the Company’s commercial, agricultural and consumer loan types. A major risk arises from the necessity to complete projects within specified cost and time lines. Trends in the construction industry significantly impact the credit quality of these loans, as demand drives construction activity. In addition, trends in real estate values significantly impact the credit quality of these loans, as property values determine the economic viability of construction projects. Commercial – These loans are generally considered to possess a moderate inherent risk of loss because they are shorter-term; typically made to relationship customers; generally underwritten to existing cash flows of operating businesses; and may be collateralized by fixed assets, inventory and/or accounts receivable. Debt coverage is provided by business cash flows and economic trends influenced by unemployment rates and other key economic indicators are closely correlated to the credit quality of these loans. Agricultural Real Estate and Agricultural – These loans are generally considered to possess a moderate inherent risk of loss since they are typically made to relationship customers and are secured by crop production, livestock and related real estate. These loans are vulnerable to two risk factors that are largely outside the control of Company and borrowers: commodity prices and weather conditions. Leases – Equipment leases are generally considered to possess a moderate inherent risk of loss. As lessor, the Company is subject to both the credit risk of the borrower and the residual value risk of the equipment. Credit risks are underwritten using the same credit criteria the Company would use when making an equipment term loan. Residual value risk is managed through the use of qualified, independent appraisers that establish the residual values the Company uses in structuring a lease. Residential 1st Mortgages and Home Equity Lines and Loans – These loans are generally considered to possess a lower inherent risk of loss. The degree of risk in residential real estate lending depends primarily on the loan amount in relation to collateral value, the interest rate and the borrower's ability to repay in an orderly fashion. Economic trends determined by unemployment rates and other key economic indicators are closely correlated to the credit quality of these loans. Weak economic trends indicate that the borrowers' capacity to repay their obligations may be deteriorating Consumer & Other – A consumer installment loan portfolio is usually comprised of a large number of small loans scheduled to be amortized over a specific period. Most installment loans are made for consumer purchases. Economic trends determined by unemployment rates and other key economic indicators are closely correlated to the credit quality of these loans. Weak economic trends indicate that the borrowers' capacity to repay their obligations may be deteriorating At least quarterly, the Board of Directors reviews the adequacy of the allowance, including consideration of the relative risks in the portfolio, current economic conditions and other factors. If the Board of Directors and management determine that changes are warranted based on those reviews, the allowance is adjusted. In addition, the Company's and Bank's regulators, including the Federal Reserve Board (“FRB”), the Department of Financial Protection and Innovation (“DFPI”) and the Federal Deposit Insurance Corporation (“FDIC”), as an integral part of their examination process, review the adequacy of the allowance. These regulatory agencies may require additions to the allowance based on their judgment about information available at the time of their examinations
Acquired Loans	Acquired Loans Loans acquired through purchase or through a business combination are recorded at their fair value at the acquisition date. Credit discounts, which reflect estimates of credit losses, expected to be incurred over the life of the loan, are included in the determination of fair value; therefore, an allowance for loan losses is not recorded at the acquisition date.
Allowance for Credit Losses on Off-Balance-Sheet Credit Exposures	Allowance for Credit Losses on Off-Balance-Sheet Credit Exposures The Company also maintains a separate allowance for off-balance-sheet commitments. Management estimates anticipated losses using historical data and utilization assumptions. The allowance for off-balance-sheet commitments is included in Interest Payable and Other Liabilities on the Company’s Consolidated Balance Sheet.
Right of Use Lease Asset & Lease Liability	Right of Use Lease Asset & Lease Liability The Company leases retail space and office space under operating leases. Most leases require the Company to pay real estate taxes, maintenance, insurance and other similar costs in addition to the base rent. Certain leases also contain lease incentives, such as tenant improvement allowances and rent abatement. Variable lease payments are recognized as lease expense as they are incurred. We record an operating lease right of use (ROU) asset and an operating lease liability (lease liability) for operating leases with a lease term greater than 12 months. The ROU asset and lease liability are recorded in other assets and other liabilities, respectively, in the consolidated statement of financial condition. 12 ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Accordingly, ROU assets are reduced by tenant improvement allowances from landlords plus any prepaid rent. We do not separate lease and non-lease components of contracts. As most of our leases do not provide an implicit rate, we generally use our incremental borrowing rate based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. Many of our leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule, which are factored into our determination of lease payments when appropriate. A majority of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. The ROU asset and lease liability terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.
Revenue from Contracts with Customers	Revenue from Contracts with Customers The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods. The Company’s primary sources of revenue are derived from interest and dividends earned on loans, investment securities, and other financial instruments that are not within the scope of Topic 606. The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is limited judgment involved in applying Topic 606 that significantly affects the determination of the amount and timing of revenue from contracts with customers.
Premises and Equipment	Premises and Equipment Premises, equipment, and leasehold improvements are stated at cost, less accumulated depreciation and amortization. Depreciation is computed principally by the straight-line method over the estimated useful lives of the assets. Estimated useful lives of buildings range from 30 to 40 years, and for furniture and equipment from 3 to 7 years. Leasehold improvements are amortized over the lesser of the terms of the respective leases, or their useful lives, which are generally 5 to 10 years. Remodeling and capital improvements are capitalized while maintenance and repairs are charged directly to occupancy expense.
Other Real Estate	Other Real Estate Other real estate, which is included in other assets, is expected to be sold and is comprised of properties no longer utilized for business operations and property acquired through foreclosure in satisfaction of indebtedness. These properties are recorded at fair value less estimated selling costs upon acquisition. Revised estimates to the fair value less cost to sell are reported as adjustments to the carrying amount of the asset, provided that such adjusted value is not in excess of the carrying amount at acquisition. Initial losses on properties acquired through full or partial satisfaction of debt are treated as credit losses and charged to the allowance for credit losses at the time of acquisition. Subsequent declines in value from the recorded amounts, routine holding costs, and gains or losses upon disposition, if any, are included in non-interest expense as incurred. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (“CARES Act”) was signed into law, and was amended and extended by H.R. 133 on December 21, 2020. The CARES Act and H.R. 133 restrict the ability of financial institutions to exercise their foreclosure rights on residential and multi-family properties backed by federally guaranteed mortgage loans. The State of California has gone further and temporarily suspended all residential and commercial foreclosures through June 30, 2021. The Company is working with its borrowers when they make requests to defer payments on their mortgage loans. See “Note 2 – Risks and Uncertainties” for additional information on the CARES Act and the impact of COVID-19 on the Company.
Income Taxes	Income Taxes The Company uses the liability method of accounting for income taxes. This method results in the recognition of deferred tax assets and liabilities that are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. The deferred provision for income taxes is the result of the net change in the deferred tax asset and deferred tax liability balances during the year. This amount combined with the current taxes payable or refundable results in the income tax expense for the current year. The Company follows the standards set forth in the “Income Taxes” topic of the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”), which clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements. This standard prescribes a recognition threshold and measurement standard for the financial statement recognition and measurement of an income tax position taken or expected to be taken in a tax return. It also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. The Company accounts for leases with Investment Tax Credits (ITC) under the deferred method as established in ASC 740-10. ITC are viewed and accounted for as a reduction of the cost of the related assets and presented as deferred income on the Company’s financial statement. The Company accounts for its interest in LIHTC using the cost method as established in ASC 323-740. As an investor, the Company obtains income tax credits and deductions from the operating losses of these tax credit entities. The income tax credits and deductions are allocated to the investors based on their ownership percentages and are recorded as a reduction of income tax expense (or an increase to income tax benefit) and a reduction of federal income taxes payable. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the position taken or the amount of the position that would be ultimately sustained. The benefit of a tax position is recognized in the consolidated financial statements in the period during which, based on all available evidence, management believes it is more likely than not that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Tax positions taken are not offset or aggregated with other positions. Tax positions that meet the more-likely-than-not recognition threshold are measured as the largest amount of tax benefit that is more than 50 percent likely of being realized upon settlement with the applicable taxing authority. The portion of the benefits associated with tax positions taken that exceeds the amount measured as described above is reflected as a liability for unrecognized tax benefits in the accompanying consolidated balance sheet along with any associated interest and penalties that would be payable to the taxing authorities upon examination. At December 31, 2020 and 2019, the Company has no material uncertain tax positions and recognized no interest or penalties. The Company's policy is to recognize interest and penalties related to income taxes in the provision for income taxes in the Consolidated Statement of Income
Basic and Diluted Earnings Per Common Share	Basic and Diluted Earnings Per Common Share The Company’s common stock is not traded on any exchange. However, trades are reported on the OTCQX under the symbol "FMCB". The shares are primarily held by local residents and are not actively traded. Basic earnings per common share amounts are computed by dividing net income by the weighted average number of common shares outstanding for the period. There are common stock equivalent shares. Therefore, there is no difference between presentation of diluted and basic earnings per common share. See Note 15 – “Dividends and Basic and Diluted Earnings Per Common Share” for additional information
Segment Reporting	Segment Reporting The “Segment Reporting” topic of the FASB ASC requires that public companies report certain information about operating segments. It also requires that public companies report certain information about their products and services, the geographic areas in which they operate, and their major customers. The Company is a holding company for a community bank, which offers a wide array of products and services to its customers. Pursuant to its banking strategy, emphasis is placed on building relationships with its customers, as opposed to building specific lines of business. As a result, the Company is not organized around discernible lines of business and prefers to work as an integrated unit to customize solutions for its customers, with business line emphasis and product offerings changing over time as needs and demands change.
Comprehensive Income	Comprehensive Income The “Comprehensive Income” topic of the FASB ASC establishes standards for the reporting and display of comprehensive income and its components in the financial statements. Other comprehensive income refers to revenues, expenses, gains, and losses that U.S. GAAP recognize as changes in value to an enterprise but are excluded from net income. For the Company, comprehensive income includes net income and changes in fair value of its available-for-sale investment securities.
Loss Contingencies	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there now are such matters that will have a material effect on the consolidated financial statements.
Business Combinations and Related Matters	Business Combinations And Related Matters Business combinations are accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. Under the acquisition method, the acquiring entity in a business combination recognizes 100 percent of the acquired assets and assumed liabilities, regardless of the percentage owned, at their estimated fair values as of the date of acquisition. Any excess of the fair value over the purchase price of net assets and other identifiable intangible assets acquired is recorded as bargain purchase gain. Assets acquired and liabilities assumed from contingencies must also be recognized at fair value, if the fair value can be determined during the measurement period. Results of operations of an acquired business are included in the statement of operations from the date of acquisition. Acquisition-related costs, including conversion charges, are expensed as incurred.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets intangible ("CDI") represents (in thousands) 2021 2022 2023 2024 2025 Thereafter Total Core Deposit Intangible Amortization $ 611 $ 593 $ 573 $ 549 $ 522 $ 1,165 $ 4,013 We make a qualitative assessment of whether it is more likely than not that the fair value of a reporting unit where goodwill is assigned is less than its carrying amount. If we conclude that it is more likely than not that the fair value is more than its carrying amount, no impairment is recorded. Goodwill is tested for impairment on an interim basis if circumstances change or an event occurs between annual tests that would more likely than not reduce the fair value of the reporting unit below its carrying amount. The qualitative assessment includes adverse events or circumstances identified that could negatively affect the reporting units’ fair value as well as positive and mitigating events. Such indicators may include, among others, a significant change in legal factors or in the general business climate, significant change in our stock price and market capitalization, unanticipated competition, and an action or assessment by a regulator. If the fair value of a reporting unit is less than its carrying amount, an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Policies)	12 Months Ended
	Dec. 31, 2020
Recent Accounting Pronouncements [Abstract]
Accounting Guidance Pending Adoption	Accounting Guidance Pending Adoption at December 31, 2020 The following paragraphs provide descriptions of newly issued but not yet effective accounting standards that could have a material effect on the Company’s financial position or results of operations. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740). In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848)

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Future Estimated Amortization Expense for CDI	Goodwill and Other Intangible Assets intangible ("CDI") represents (in thousands) 2021 2022 2023 2024 2025 Thereafter Total Core Deposit Intangible Amortization $ 611 $ 593 $ 573 $ 549 $ 522 $ 1,165 $ 4,013

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2020
Investment Securities [Abstract]
Amortized Cost, Fair Values, and Unrealized Gains and Losses of Securities Available-For-Sale	The amortized cost, fair values, and unrealized gains and losses of the securities available-for-sale (in thousands) Amortized Gross Unrealized Fair/Book December 31, 2020 Cost Gains Losses Value US Treasury Notes $ 14,859 $ 429 $ - $ 15,288 US Government Agency SBA 8,252 1 93 8,160 Mortgage Backed Securities (1) 720,562 17,359 48 737,873 Corporate Securities 45,010 927 18 45,919 Other 492 - - 492 Total $ 789,175 $ 18,716 $ 159 $ 807,732 Amortized Gross Unrealized Fair/Book December 31, 2019 Cost Gains Losses Value US Treasury Notes $ 54,745 $ 250 $ - $ 54,995 US Government Agency SBA 10,902 9 113 10,798 Mortgage Backed Securities (1) 436,531 4,646 99 441,078 Other 515 - - 515 Total $ 502,693 $ 4,905 $ 212 $ 507,386 (1)
Book Values, Estimated Fair Values and Unrealized Gains and Losses of Investments Classified as Held-To-Maturity	The book values, estimated fair values and unrealized gains and losses of investments classified as held-to-maturity (in thousands) Amortized Gross Unrealized Fair December 31, 2020 Cost Gains Losses Value Obligations of States and Political Subdivisions $ 68,933 $ 1,116 $ - $ 70,049 Total $ 68,933 $ 1,116 $ - $ 70,049 Amortized Gross Unrealized Fair December 31, 2019 Cost Gains Losses Value Obligations of States and Political Subdivisions $ 60,229 $ 880 $ 12 $ 61,097 Total $ 60,229 $ 880 $ 12 $ 61,097
Amortized Cost and Estimated Fair Values of Investment Securities by Contractual Maturity	The amortized cost and estimated fair values of investment securities at December 31, 2020 by contractual maturity are shown in the following tables. (in thousands) Available-for-Sale Held-to-Maturity December 31, 2020 Amortized Cost Fair/Book Value Amortized Cost Fair Value Within One Year $ 5,479 $ 5,512 $ 8,309 $ 8,309 After One Year Through Five Years 25,427 26,096 5,137 5,179 After Five Years Through Ten Years 30,281 30,912 23,493 24,451 After Ten Years 7,426 7,339 31,994 32,110 68,613 69,859 68,933 70,049 Investment Securities Not Due at a Single Maturity Date: Mortgage Backed Securities 720,562 737,873 - - Total $ 789,175 $ 807,732 $ 68,933 $ 70,049
Investments with Gross Unrealized Losses and Market Value Aggregated by Investment Category and Length of Time That Individual Securities Have Been In a Continuous Unrealized Loss Position	The following tables show those investments with gross unrealized losses and their market value aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at the dates indicated. (in thousands) Less Than 12 Months 12 Months or More Total December 31, 2020 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Securities Available-for-Sale US Government Agency SBA $ 1,741 $ 3 $ 6,126 $ 90 $ 7,867 $ 93 Mortgage Backed Securities 20,142 45 177 3 20,319 48 Corporate Securities 4,041 18 - - 4,041 18 Total $ 25,924 $ 66 $ 6,303 $ 93 $ 32,227 $ 159 There were HTM investments with gross unrealized losses at December 31, 2020. Less Than 12 Months 12 Months or More Total December 31, 2019 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Securities Available-for-Sale US Government Agency SBA $ 2,693 $ 6 $ 5,198 $ 107 $ 7,891 $ 113 Mortgage Backed Securities 131,005 88 713 11 131,718 99 Total $ 133,698 $ 94 $ 5,911 $ 118 $ 139,609 $ 212 Securities Held-to-Maturity Obligations of States and Political Subdivisions $ 355 $ 12 $ - $ - $ 355 $ 12 Total $ 355 $ 12 $ - $ - $ 355 $ 12
Proceeds from Sales and Calls of Securities	Proceeds from sales and calls of these securities were as follows: (in thousands) Gross Proceeds Gross Gains Gross Losses 2020 $ 5,080 $ 40 $ - 2019 $ 5,300 $ 1 $ - 2018 $ 99,323 $ 78 $ 1,338

Loans & Leases (Tables)

Loans & Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Loans & Leases [Abstract]
Loans and Leases	Loans & leases as of December 31 consisted of the following: (in thousands) 2020 2019 Commercial Real Estate $ 971,326 $ 846,486 Agricultural Real Estate 643,014 625,767 Real Estate Construction 185,741 115,644 Residential 1st Mortgages 299,379 255,253 Home Equity Lines and Loans 34,239 39,270 Agricultural 264,372 292,904 Commercial 374,816 384,795 Consumer & Other (1) 235,529 15,422 Leases 103,117 104,470 Total Gross Loans & Leases 3,111,533 2,680,011 Less: Unearned Income 11,941 6,984 Subtotal 3,099,592 2,673,027 Less: Allowance for Credit Losses 58,862 55,012 Loans & Leases, Net $ 3,040,730 $ 2,618,015 (1) Includes CARES Act Small Business Administration Paycheck Protection Program loans of $ as of December 31, 2020.

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2020
Allowance for Credit Losses [Abstract]
Allocation of Allowance for Credit Losses by Portfolio Segment and by Impairment Methodology	The following tables show the allocation of the allowance for credit losses at December 31, 2020 and December 31, 2019 by portfolio segment and by impairment methodology (in thousands) December 31, 2020 Commercial Real Estate Agricultural Real Estate Real Estate Construction Residential 1st Mortgages Home Equity Lines & Loans Agricultural Commercial Consumer & Other Leases Unallocated Total Year-To-Date Allowance for Credit Losses: Beginning Balance- January 1, 2020 $ 11,053 $ 15,128 $ 1,949 $ 855 $ 2,675 $ 8,076 $ 11,466 $ 456 $ 3,162 $ 192 $ 55,012 Charge-Offs - - - - (7 ) - (1,101 ) (66 ) - - (1,174 ) Recoveries - 81 - 52 78 - 280 33 - - 524 Provision 16,626 (6,576 ) (306 ) 53 (722 ) (3,262 ) (684 ) (90 ) (1,431 ) 892 4,500 Ending Balance- December 31, 2020 $ 27,679 $ 8,633 $ 1,643 $ 960 $ 2,024 $ 4,814 $ 9,961 $ 333 $ 1,731 $ 1,084 $ 58,862 Ending Balance Individually Evaluated for Impairment - - - 117 8 92 20 52 - - 289 Ending Balance Collectively Evaluated for Impairment 27,679 8,633 1,643 843 2,016 4,722 9,941 281 1,731 1,084 58,573 Loans & Leases: Ending Balance $ 958,980 $ 643,014 $ 185,741 $ 299,379 $ 34,239 $ 264,372 $ 374,816 $ 235,529 $ 103,522 $ - $ 3,099,592 Ending Balance Individually Evaluated for Impairment 104 5,629 - 2,365 158 495 233 254 - - 9,238 Ending Balance Collectively Evaluated for Impairment 958,876 637,385 185,741 297,014 34,081 263,877 374,583 235,275 103,522 - 3,090,354 December 31, 2019 Commercial Real Estate Agricultural Real Estate Real Estate Construction Residential 1st Mortgages Home Equity Lines & Loans Agricultural Commercial Consumer & Other Leases Unallocated Total Year-To-Date Allowance for Credit Losses: Beginning Balance- January 1, 2019 $ 11,609 $ 14,092 $ 1,249 $ 880 $ 2,761 $ 8,242 $ 11,656 $ 494 $ 4,022 $ 261 $ 55,266 Charge-Offs - - - - - - (592 ) (83 ) - - (675 ) Recoveries - 38 - 13 28 - 90 52 - - 221 Provision (556 ) 998 700 (38 ) (114 ) (166 ) 312 (7 ) (860 ) (69 ) 200 Ending Balance- December 31, 2019 $ 11,053 $ 15,128 $ 1,949 $ 855 $ 2,675 $ 8,076 $ 11,466 $ 456 $ 3,162 $ 192 $ 55,012 Ending Balance Individually Evaluated for Impairment 234 - - 118 12 99 137 61 - - 661 Ending Balance Collectively Evaluated for Impairment 10,819 15,128 1,949 737 2,663 7,977 11,329 395 3,162 192 54,351 Loans & Leases: Ending Balance $ 838,570 $ 625,767 $ 115,644 $ 255,253 $ 39,270 $ 292,904 $ 384,795 $ 15,422 $ 105,402 $ - $ 2,673,027 Ending Balance Individually Evaluated for Impairment 4,524 5,654 - 2,368 229 188 1,528 200 - - 14,691 Ending Balance Collectively Evaluated for Impairment 834,046 620,113 115,644 252,885 39,041 292,716 383,267 15,222 105,402 - 2,658,336
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings	The following tables show the loan & lease portfolio, including unearned income allocated by management’s internal risk ratings at December 31, 2020 and December 31, 2019 (in thousands) December 31, 2020 Pass (1) Special Mention Substandard Total Loans Loans & Leases: Commercial Real Estate $ 946,621 $ 7,849 $ 4,510 $ 958,980 Agricultural Real Estate 631,043 400 11,571 643,014 Real Estate Construction 185,741 - - 185,741 Residential 1st Mortgages 298,689 - 690 299,379 Home Equity Lines and Loans 34,058 - 181 34,239 Agricultural 263,781 96 495 264,372 Commercial 373,038 1,060 718 374,816 Consumer & Other 235,063 - 466 235,529 Leases 103,522 - - 103,522 Total $ 3,071,556 $ 9,405 $ 18,631 $ 3,099,592 (1) Includes “Watch” loans of $ million. December 31, 2019 Pass (1) Special Mention Substandard Total Loans Loans & Leases: Commercial Real Estate $ 831,941 $ 6,629 $ - $ 838,570 Agricultural Real Estate 611,792 1,136 12,839 625,767 Real Estate Construction 115,644 - - 115,644 Residential 1st Mortgages 254,459 - 794 255,253 Home Equity Lines and Loans 39,092 - 178 39,270 Agricultural 289,276 2,617 1,011 292,904 Commercial 380,650 3,239 906 384,795 Consumer & Other 14,934 - 488 15,422 Leases 105,402 - - 105,402 Total $ 2,643,190 $ 13,621 $ 16,216 $ 2,673,027 (1) Includes “Watch” loans of $ million.
Aging Analysis of Loan & Lease Portfolio by Time Past Due	The following tables show an aging analysis of the loan & lease portfolio, including unearned income, by the time past due at December 31, 2020 and December 31, 2019 (in thousands) December 31, 2020 30-59 Days Past Due 60-89 Days Past Due 90 Days and Still Accruing Nonaccrual Total Past Due Current Total Loans & Leases Loans & Leases: Commercial Real Estate $ - $ - $ - $ - $ - $ 958,980 $ 958,980 Agricultural Real Estate - - - 495 495 642,519 643,014 Real Estate Construction - - - - - 185,741 185,741 Residential 1st Mortgages - - - - - 299,379 299,379 Home Equity Lines and Loans - - - - - 34,239 34,239 Agricultural - - - - - 264,372 264,372 Commercial - - - - - 374,816 374,816 Consumer & Other 11 - - - 11 235,518 235,529 Leases - - - - - 103,522 103,522 Total $ 11 $ - $ - $ 495 $ 506 $ 3,099,086 $ 3,099,592 December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 Days and Still Accruing Nonaccrual Total Past Due Current Total Loans & Leases Loans & Leases: Commercial Real Estate $ - $ - $ - $ - $ - $ 838,570 $ 838,570 Agricultural Real Estate - - - - - 625,767 625,767 Real Estate Construction 240 - - - 240 115,404 115,644 Residential 1st Mortgages - - - - - 255,253 255,253 Home Equity Lines and Loans - - - - - 39,270 39,270 Agricultural - - - - - 292,904 292,904 Commercial 77 - - - 77 384,718 384,795 Consumer & Other 35 - - - 35 15,387 15,422 Leases - - - - - 105,402 105,402 Total $ 352 $ - $ - $ - $ 352 $ 2,672,675 $ 2,673,027
Impaired Loans & Leases	The following tables show information related to impaired loans & leases at and for the year ended December 31, 2020 and December 31, 2019 (in thousands) December 31, 2020 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Real Estate $ 84 $ 84 $ - $ 764 $ 35 Agricultural Real Estate 5,629 5,629 - 5,629 352 Agricultural 3 3 - 2 - Commercial - - - 377 16 $ 5,716 $ 5,716 $ - $ 6,772 $ 403 With an allowance recorded: Commercial Real Estate $ - $ - $ - $ 21 $ 1 Agricultural Real Estate - - - 137 - Residential 1st Mortgages 1,671 1,895 84 1,652 76 Home Equity Lines and Loans 64 75 3 66 4 Agricultural 492 534 92 410 59 Commercial 234 234 13 123 18 Consumer & Other 190 191 56 194 13 $ 2,651 $ 2,929 $ 248 $ 2,603 $ 171 Total $ 8,367 $ 8,645 $ 248 $ 9,375 $ 574 December 31, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial Real Estate $ 86 $ 86 $ - $ 90 $ 8 Agricultural Real Estate 5,654 5,654 - 6,069 379 Commercial - - - 8 1 $ 5,740 $ 5,740 $ - $ 6,167 $ 388 With an allowance recorded: Commercial Real Estate $ 2,822 $ 2,822 $ 234 $ 2,853 $ 94 Residential 1st Mortgages 1,562 1,770 74 1,601 73 Home Equity Lines and Loans 68 79 7 71 4 Agricultural 188 188 99 195 6 Commercial 1,528 1,528 137 1,554 53 Consumer & Other 200 200 61 54 - $ 6,368 $ 6,587 $ 612 $ 6,328 $ 230 Total $ 12,108 $ 12,327 $ 612 $ 12,495 $ 618
Loans & Leases by Class Modified as Troubled Debt Restructured Loans	The following table presents loans by class modified as troubled debt restructured loans for the year ended December 31, 2020 (in thousands) December 31, 2020 Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Residential 1st Mortgages 2 $ 156 $ 156 Agricultural 3 495 495 Commercial 1 224 224 Total 6 $ 875 $ 875 The following table presents loans by class modified as troubled debt restructured loans for the year ended December 31, 2019 (in thousands) December 31, 2019 Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Agricultural 1 $ 201 $ 201 Consumer & Other 1 195 195 Total 2 $ 396 $ 396

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Premises and Equipment [Abstract]
Premises and Equipment	Premises and equipment as of December 31 consisted of the following: (in thousands) 2020 2019 Land and Buildings $ 60,246 $ 53,997 Furniture, Fixtures and Equipment 21,750 21,058 Leasehold Improvement 3,753 3,745 Subtotal 85,749 78,800 Less: Accumulated Depreciation and Amortization 35,602 33,529 Total $ 50,147 $ 45,271

Time Deposits (Tables)

Time Deposits (Tables)	12 Months Ended
	Dec. 31, 2020
Time Deposits [Abstract]
Time Deposits of $250,000 or More	Time Deposits of $250,000 or more as of December 31 were as follows: (in thousands) 2020 2019 Balance $ 185,944 $ 257,392
Maturities of Time Deposits	At December 31, 2020, the scheduled maturities of time deposits were as follows: (in thousands) Scheduled Maturities 2021 $ 373,332 2022 38,620 2023 7,571 2024 715 2025 1,630 Total $ 421,868

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Taxes [Abstract]
Current and Deferred Income Tax Expense (Benefit)	Current and deferred income tax expense (benefit) provided for the years ended December 31 consisted of the following: (in thousands) 2020 2019 2018 Current Federal $ 12,174 $ 14,798 $ 2,517 State 9,005 7,733 6,224 Total Current 21,179 22,531 8,741 Deferred Federal (1,115 ) (3,500 ) 5,622 State (847 ) 246 (160 ) Total Deferred (1,962 ) (3,254 ) 5,462 Total Provision for Taxes $ 19,217 $ 19,277 $ 14,203
Total Provision for Income Taxes Reconciliation with Federal Statutory Rate	The total provision for income taxes differs from the federal statutory rate as follows: 2020 2019 2018 (in thousands) Amount Rate Amount Rate Amount Rate Tax Provision at Federal Statutory Rate $ 16,370 21.0 % $ 15,816 21.0 % $ 12,543 21.0 % Interest on Obligations of States and Political Subdivisions exempt from Federal Taxation (350 ) (0.4 %) (358 ) (0.5 %) (338 ) (0.5 %) State and Local Income Taxes, Net of Federal Income Tax Benefit 6,445 8.3 % 6,304 8.4 % 4,791 7.9 % Bank Owned Life Insurance (444 ) (0.6 %) (460 ) (0.6 %) (434 ) (0.7 %) Low-Income Housing Tax Credit (2,655 ) (3.4 %) (2,078 ) (2.8 %) (1,624 ) (2.7 %) Out of Period Adjustment - 0.0 % - 0.0 % (802 ) (1.3 %) Other, Net (149 ) (0.2 %) 53 0.1 % 67 0.1 % Total Provision for Taxes $ 19,217 24.7 % $ 19,277 25.6 % $ 14,203 23.8 %
Components of Net Deferred Tax Assets	The components of net deferred tax assets as of December 31 are as follows: The net deferred tax assets are reported in Interest Receivable and Other Assets on the Company’s Consolidated Balance Sheet. (in thousands) 2020 2019 Deferred Tax Assets Allowance for Credit Losses $ 17,248 $ 15,925 Accrued Liabilities 8,526 8,452 Deferred Compensation 13,707 14,200 State Franchise Tax 1,891 1,624 Tax Credit Carry Forward - 1,266 Lease Liability 1,454 1,487 Acquired Net Operating Loss 643 673 Fair Value Adjustment on Loans Acquired 237 286 Fair Value Adjustment on ORE Acquired 108 108 PPP Loan Service Fee Income 1,367 - Low-Income Housing Investment 384 286 Other 7 2 Total Deferred Tax Assets $ 45,572 $ 44,309 Deferred Tax Liabilities Premises and Equipment (1,684 ) (1,974 ) Securities Accretion (588 ) (370 ) Unrealized Gain on Securities Available-for-Sale (5,156 ) (935 ) Leasing Activities (17,183 ) (19,226 ) Core Deposit Intangible Asset (1,186 ) (1,372 ) ROU Lease Asset (1,428 ) (1,471 ) Prepaid (45 ) (66 ) Other (1,209 ) (898 ) Total Deferred Tax Liabilities (28,479 ) (26,312 ) Net Deferred Tax Assets $ 17,093 $ 17,997

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Shareholders' Equity [Abstract]
Compliance with Regulatory Capital Requirements under Banking Regulations	In addition, the most recent notification from the FDIC categorized the Bank as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since that notification that management believes have changed the Bank’s category. (in thousands) Actual Minimum Regulatory Capital Requirements Well Capitalized Under Prompt Corrective Action December 31, 2020 Amount Ratio Amount Ratio Amount Ratio Total Bank Capital to Risk Weighted Assets $ 446,251 12.46 % $ 286,462 8.00 % $ 358,077 10.00 % Total Consolidated Capital to Risk Weighted Assets $ 450,890 12.59 % $ 286,539 8.00 % N/A N/A Total Bank Common Equity Tier 1 Capital Ratio $ 401,313 11.21 % $ 161,135 4.50 % $ 232,750 6.50 % Total Consolidated Common Equity Tier 1 Capital Ratio $ 395,941 11.05 % $ 161,178 4.50 % N/A N/A Tier 1 Bank Capital to Risk Weighted Assets $ 401,313 11.21 % $ 214,846 6.00 % $ 286,462 8.00 % Tier 1 Consolidated Capital to Risk Weighted Assets $ 405,941 11.33 % $ 214,904 6.00 % N/A N/A Tier 1 Bank Capital to Average Assets $ 401,313 9.04 % $ 177,605 4.00 % $ 222,006 5.00 % Tier 1 Consolidated Capital to Average Assets $ 405,941 9.13 % $ 177,820 4.00 % N/A N/A (in thousands) Actual Minimum Regulatory Capital Requirements Well Capitalized Under Prompt Corrective Action December 31, 2019 Amount Ratio Amount Ratio Amount Ratio Total Bank Capital to Risk Weighted Assets $ 399,230 12.33 % $ 259,012 8.00 % $ 323,765 10.00 % Total Consolidated Capital to Risk Weighted Assets $ 400,258 12.36 % $ 259,028 8.00 % N/A N/A Total Bank Common Equity Tier 1 Capital Ratio $ 358,576 11.08 % $ 145,694 4.50 % $ 210,447 6.50 % Total Consolidated Common Equity Tier 1 Capital Ratio $ 349,601 10.80 % $ 145,703 4.50 % N/A N/A Tier 1 Bank Capital to Risk Weighted Assets $ 358,576 11.08 % $ 194,259 6.00 % $ 259,012 8.00 % Tier 1 Consolidated Capital to Risk Weighted Assets $ 359,601 11.11 % $ 194,271 6.00 % N/A N/A Tier 1 Bank Capital to Average Assets $ 358,576 9.89 % $ 145,079 3.00 % $ 181,349 5.00 % Tier 1 Consolidated Capital to Average Assets $ 359,601 9.90 % $ 145,255 3.00 % N/A N/A

Dividends and Basic and Dilut_2

Dividends and Basic and Diluted Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2020
Dividends and Basic and Diluted Earnings Per Common Share [Abstract]
Calculation of Basic and Diluted Earnings per Common Share	Basic earnings per common share amounts are computed by dividing net income by the weighted average number of common shares outstanding for the period. The Company has no securities or other contracts, such as stock options, that could require the issuance of additional common stock. Accordingly, diluted earnings per share are equal to basic earnings per share. The following table calculates the basic and diluted earnings per common share for the periods indicated. ( net income in thousands 2020 2019 2018 Net Income $ 58,734 $ 56,036 $ 45,527 Weighted Average Number of Common Shares Outstanding 793,337 787,227 801,229 Basic and Diluted Earnings Per Common Share $ 74.03 $ 71.18 $ 56.82

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Measurements [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables present information about the Company’s assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value for the periods indicated. Fair Value Measurements At December 31, 2020, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available-for-Sale Securities: US Treasury Notes $ 15,288 $ 15,288 $ - $ - US Government Agency SBA 8,160 - 8,160 - Mortgage Backed Securities 737,873 - 737,873 - Corporate Securities 45,919 - 45,919 - Other 492 182 310 - Total Assets Measured at Fair Value On a Recurring Basis $ 807,732 $ 15,470 $ 792,262 $ - Fair Value Measurements At December 31, 2019, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available-for-Sale Securities: US Treasury Notes $ 54,995 $ 54,995 $ - $ - US Government Agency SBA 10,798 - 10,798 - Mortgage Backed Securities 441,078 - 441,078 - Other 515 205 310 - Total Assets Measured at Fair Value On a Recurring Basis $ 507,386 $ 55,200 $ 452,186 $ -
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis	The following tables present information about the Company’s impaired loans & leases and other real estate, classes of assets or liabilities that the Company carries at fair value on a non-recurring basis, and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value for the periods indicated. Not all impaired loans & leases are carried at fair value. Impaired loans & leases are only included in the following tables when their fair value is based upon an appraisal of the collateral, and if that appraisal results in a partial charge-off or the establishment of a specific reserve. Fair Value Measurements At December 31, 2020, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Impaired Loans: Residential 1st Mortgage $ 1,584 $ - $ - $ 1,584 Home Equity Lines and Loans 61 - - 61 Agricultural 400 - - 400 Commercial 213 - - 213 Consumer 138 - - 138 Total Impaired Loans 2,396 - - 2,396 Other Real Estate: Real Estate Construction 873 - - 873 Total Other Real Estate 873 - - 873 Total Assets Measured at Fair Value On a Non-Recurring Basis $ 3,269 $ - $ - $ 3,269 Fair Value Measurements At December 31, 2019, Using (in thousands) Fair Value Total Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Impaired Loans: Commercial Real Estate $ 2,588 $ - $ - $ 2,588 Residential 1st Mortgage 1,403 - - 1,403 Home Equity Lines and Loans 142 - - 142 Agricultural 88 - - 88 Commercial 1,391 - - 1,391 Consumer 139 - - 139 Total Impaired Loans 5,751 - - 5,751 Other Real Estate: Real Estate Construction 873 - - 873 Total Other Real Estate 873 - - 873 Total Assets Measured at Fair Value On a Non-Recurring Basis $ 6,624 $ - $ - $ 6,624
Quantitative Information about Level 3 Fair Value Measurements for Financial Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2020 and 2019: December 31, 2020 (in thousands) Fair Value Valuation Technique Unobservable Inputs Range, Weighted Avg. Impaired Loans: Residential 1st Mortgage $ 1,584 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 0.72% - 4.13%, 2.57 % Home Equity Lines and Loans $ 61 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 1.1% - 1.4%, 1.25 % Agricultural $ 400 Income Approach Capitalization Rate 10%, 10 % Commercial $ 213 Income Approach Capitalization Rate 10%, 10 % Consumer $ 138 Income Approach Adjustment for Difference Between Comparable Sales 10%, 10 % Other Real Estate: Real Estate Construction $ 873 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 10%, 10 % December 31, 2019 (in thousands) Fair Value Valuation Technique Unobservable Inputs Range, Weighted Avg. Impaired Loans: Commercial Real Estate $ 2,588 Income Approach Capitalization Rate 3.3 % Residential 1st Mortgages $ 1,403 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 0.8% - 6.4%, 3 % Home Equity Lines and Loans $ 142 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 1% - 2%, 1.3 % Agricultural $ 88 Income Approach Capitalization Rate 4.3 % Commercial $ 1,391 Income Approach Capitalization Rate 3.3 % Consumer $ 139 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 40.6 % Other Real Estate: Real Estate Construction $ 873 Sales Comparison Approach Adjustment for Difference Between Comparable Sales 10 %

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value of Financial Instruments [Abstract]
Book Value and Estimated Fair Value of Financial Instruments	The following tables summarize the carrying value and estimated fair value of financial instruments for the periods indicated: Fair Value of Financial Instruments Using December 31, 2020 (in thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value Assets: Cash and Cash Equivalents $ 383,837 $ 383,837 $ - $ - $ 383,837 Investment Securities Available-for-Sale 807,732 15,470 792,262 - 807,732 Investment Securities Held-to-Maturity 68,933 - 26,262 43,787 70,049 Loans & Leases, Net 3,040,730 - - 3,045,911 3,045,911 Accrued Interest Receivable 20,333 - 20,333 - 20,333 Liabilities: Deposits 4,060,267 3,638,400 - 422,840 4,061,240 Subordinated Debentures 10,310 - 6,888 - 6,888 Accrued Interest Payable 1,383 - 1,383 - 1,383 Fair Value of Financial Instruments Using December 31, 2019 (in thousands) Carrying Amount Quoted Prices in Active Markets for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Estimated Fair Value Assets: Cash and Cash Equivalents $ 294,758 $ 294,758 $ - $ - $ 294,758 Investment Securities Available-for-Sale 507,386 55,200 452,186 - 507,386 Investment Securities Held-to-Maturity 60,229 - 31,253 29,844 61,097 Loans & Leases, Net 2,618,015 - - 2,584,805 2,584,805 Accrued Interest Receivable 16,733 - 16,733 - 16,733 Liabilities: Deposits 3,278,019 2,760,097 - 517,172 3,277,269 Subordinated Debentures 10,310 - 7,325 - 7,325 Accrued Interest Payable 2,795 - 2,795 - 2,795

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies [Abstract]
Off Balance Sheet Arrangements	In the normal course of business, the Company enters into financial instruments with off balance sheet risk in order to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These instruments include commitments to extend credit, letters of credit, and other types of financial guarantees. The Company had the following off balance sheet commitments as of the dates indicated. (in thousands) December 31, 2020 December 31, 2019 Commitments to Extend Credit $ 1,040,844 $ 919,982 Letters of Credit 18,846 20,346 Performance Guarantees Under Interest Rate Swap Contracts Entered Into Between Our Borrowing Customers and Third Parties 2,786 1,513

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Information Related to Operating Leases	The table below summarizes the information related to our operating leases: (in thousands except for percent and period data) Year Ended December 31, 2020 Year Ended December 31, 2019 Cash Paid for Amounts Included in the Measurement of Lease Liabilities Operating Cash Flow from Operating Leases $ 795 $ 783 Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities $ - $ 5,645 Weighted-Average Remaining Lease Term - Operating Leases, in Years 7.33 7.88 Weighted-Average Discount Rate - Operating Leases 2.9 % 3.2 %
Maturity of Remaining Lease Liability	The table below summarizes the maturity of remaining lease liability: (in thousands) December 31, 2020 2021 727 2022 695 2023 705 2024 721 2025 731 2026 and thereafter 1,907 Total Lease Payments 5,486 Less: Interest (568 ) Present Value of Lease Liabilities $ 4,918

Parent Company Financial Info_2

Parent Company Financial Information (Tables)	12 Months Ended
	Dec. 31, 2020
Parent Company Financial Information [Abstract]
Condensed Balance Sheets	The following financial information is presented as of December 31 for the periods indicated. Farmers & Merchants Bancorp Condensed Balance Sheets (in thousands) 2020 2019 Cash $ 4,551 $ 1,341 Investment in Farmers & Merchants Bank of Central California 429,037 378,271 Investment Securities 434 411 Other Assets 832 102 Total Assets $ 434,854 $ 380,125 Subordinated Debentures $ 10,310 $ 10,310 Liabilities 879 519 Shareholders’ Equity 423,665 369,296 Total Liabilities and Shareholders’ Equity $ 434,854 $ 380,125
Condensed Statements of Income	Farmers & Merchants Bancorp Condensed Statements of Income Year Ended December 31, (in thousands) 2020 2019 2018 Equity (Loss) in Undistributed Earnings in Farmers & Merchants Bank of Central California $ 40,597 $ 44,571 $ (26,488 ) Dividends from Subsidiary 19,874 13,166 73,010 Interest Income 11 17 16 Other Expenses, Net (2,477 ) (2,416 ) (1,527 ) Tax Benefit 729 698 516 Net Income $ 58,734 $ 56,036 $ 45,527
Condensed Statements of Cash Flows	Farmers & Merchants Bancorp Condensed Statements of Cash Flows Year Ended December 31, (in thousands) 2020 2019 2018 Cash Flows from Operating Activities: Net Income $ 58,734 $ 56,036 $ 45,527 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: (Equity) Loss in Undistributed Net Earnings from Subsidiary (40,597 ) (44,571 ) 26,488 Net (Increase) in Other Assets (753 ) (160 ) (125 ) Net Increase (Decrease) in Liabilities 360 222 (942 ) Net Cash Provided by Operating Activities 17,744 11,527 70,948 Investing Activities: Payments for Business Acquisition - - (28,642 ) Payments for Investments in Non-Qualified Retirement Plan (403 ) (6,273 ) (10,503 ) Net Cash Used by Investing Activities (403 ) (6,273 ) (39,145 ) Financing Activities: Stock Repurchased (2,834 ) - (31,152 ) Issuance of Common Stock 403 6,973 10,503 Cash Dividends (11,700 ) (11,221 ) (11,151 ) Net Cash Used by Financing Activities (14,131 ) (4,248 ) (31,800 ) Increase in Cash and Cash Equivalents 3,210 1,006 3 Cash and Cash Equivalents at Beginning of Year 1,341 335 332 Cash and Cash Equivalents at End of Year $ 4,551 $ 1,341 $ 335

Quarterly Unaudited Financial_2

Quarterly Unaudited Financial Data (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Unaudited Financial Data [Abstract]
Quarterly Financial Information	The following tables set forth certain unaudited historical quarterly financial data for each of the eight consecutive quarters in 2020 and 2019. This information is derived from unaudited consolidated financial statements that include, in management’s opinion, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation when read in conjunction with the consolidated financial statements and notes thereto included elsewhere in this Form 10-K. 2020 (in thousands except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter Total Total Interest Income $ 38,689 $ 37,967 $ 39,793 $ 42,203 $ 158,652 Total Interest Expense 3,263 2,552 2,094 1,582 9,491 Net Interest Income 35,426 35,415 37,699 40,621 149,161 Provision for Credit Losses - 300 1,700 2,500 4,500 Net Interest Income After Provision for Credit Losses 35,426 35,115 35,999 38,121 144,661 Total Non-Interest Income 2,927 3,514 4,539 4,716 15,696 Total Non-Interest Expense 19,790 19,787 20,783 22,046 82,406 Income Before Income Taxes 18,563 18,842 19,755 20,791 77,951 Provision for Income Taxes 4,441 4,533 4,945 5,298 19,217 Net Income $ 14,122 $ 14,309 $ 14,810 $ 15,493 $ 58,734 Basic and Diluted Earnings Per Common Share $ 17.80 $ 18.03 $ 18.66 $ 19.54 $ 74.03 2019 (in thousands except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter Total Total Interest Income $ 37,173 $ 38,626 $ 38,810 $ 39,099 $ 153,708 Total Interest Expense 2,966 3,253 3,530 3,445 13,194 Net Interest Income 34,207 35,373 35,280 35,654 140,514 Provision for Credit Losses - 200 - - 200 Net Interest Income After Provision for Credit Losses 34,207 35,173 35,280 35,654 140,314 Total Non-Interest Income 4,464 4,400 3,974 4,403 17,241 Total Non-Interest Expense 20,445 20,565 20,856 20,376 82,242 Income Before Income Taxes 18,226 19,008 18,398 19,681 75,313 Provision for Income Taxes 4,677 4,903 4,660 5,037 19,277 Net Income $ 13,549 $ 14,105 $ 13,738 $ 14,644 $ 56,036 Basic and Diluted Earnings Per Common Share $ 17.27 $ 17.92 $ 17.45 $ 18.54 $ 71.18

Significant Accounting Polici_4

Significant Accounting Policies (Details)	Oct. 10, 2018USD ($)Branch	Oct. 09, 2018USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Acquisitions [Abstract]
Gain on remeasurement of previously held equity investment			$ 0	$ 0	$ 997,000
Assets			$ 4,550,453,000	$ 3,721,830,000
Bank of Rio Vista [Member]
Acquisitions [Abstract]
Percentage of equity interest in acquiree prior to acquisition of remaining interest		39.65%
Gain on remeasurement of previously held equity investment		$ 997,000
Assets	$ 217,500,000
Number of branches | Branch	3

Significant Accounting Polici_5

Significant Accounting Policies, Out of Period Adjustment (Details)	3 Months Ended
	Sep. 30, 2018USD ($)
Out of Period Adjustment [Member]
Out of Period Adjustment [Abstract]
Cumulative impact of out of period adjustment on provision for income taxes	$ (990,000)

Significant Accounting Polici_6

Significant Accounting Policies, Investment Securities (Details)	12 Months Ended
	Dec. 31, 2020Component
Investment Securities [Abstract]
Number of components into which amount of impairment is split	2

Significant Accounting Polici_7

Significant Accounting Policies, Loans & Leases and Allowance for Credit Losses (Details)	12 Months Ended
	Dec. 31, 2020CategoryComponentFactor
Loans & Leases [Abstract]
Consecutive months of payments to demonstrate sustained period of performance	6 months
Allowance for Credit Losses [Abstract]
Number of primary components of overall allowance for credit losses | Component	3
Number of categories into which risk ratings are grouped | Category	5
Minimum [Member]
Loans & Leases [Abstract]
Period after which loans are placed on non accrual status	90 days
Agricultural Real Estate [Member]
Allowance for Credit Losses [Abstract]
Number of risk factors on loans	2
Agricultural [Member]
Allowance for Credit Losses [Abstract]
Number of risk factors on loans	2

Significant Accounting Polici_8

Significant Accounting Policies, Premises and Equipment (Details)	12 Months Ended
	Dec. 31, 2020
Buildings [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Estimated useful lives	30 years
Buildings [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Estimated useful lives	40 years
Furniture and Equipment [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Estimated useful lives	3 years
Furniture and Equipment [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Estimated useful lives	7 years
Leasehold Improvements [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Estimated useful lives	5 years
Leasehold Improvements [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Estimated useful lives	10 years

Significant Accounting Polici_9

Significant Accounting Policies, Income Taxes (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Income Tax Penalties and Interest Expense [Abstract]
Interest	$ 0
Penalties	$ 0

Significant Accounting Polic_10

Significant Accounting Policies, Basic and Diluted Earnings Per Common Share (Details)	12 Months Ended
	Dec. 31, 2020shares
Basic and Diluted Earnings Per Common Share [Abstract]
Common stock equivalent shares (in shares)	0

Significant Accounting Polic_11

Significant Accounting Policies, Goodwill and Other Intangible Assets (Details) - Core Deposit Intangible [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Goodwill and Other Intangible Assets [Abstract]
Estimated useful life	10 years
Future estimated amortization expense for CDI [Abstract]
2021	$ 611
2022	593
2023	573
2024	549
2025	522
Thereafter	1,165
Total	$ 4,013

Investment Securities, Securiti

Investment Securities, Securities Available-for-Sale (Details) - USD ($)		Dec. 31, 2020	Dec. 31, 2019
Amortized cost, fair values, and unrealized gains and losses of securities available-for-sale [Abstract]
Amortized cost		$ 789,175,000	$ 502,693,000
Gross unrealized gains		18,716,000	4,905,000
Gross unrealized losses		159,000	212,000
Fair/Book value		807,732,000	507,386,000
US Treasury Notes [Member]
Amortized cost, fair values, and unrealized gains and losses of securities available-for-sale [Abstract]
Amortized cost		14,859,000	54,745,000
Gross unrealized gains		429,000	250,000
Gross unrealized losses		0	0
Fair/Book value		15,288,000	54,995,000
US Government Agency SBA [Member]
Amortized cost, fair values, and unrealized gains and losses of securities available-for-sale [Abstract]
Amortized cost		8,252,000	10,902,000
Gross unrealized gains		1,000	9,000
Gross unrealized losses		93,000	113,000
Fair/Book value		8,160,000	10,798,000
Mortgage Backed Securities [Member]
Amortized cost, fair values, and unrealized gains and losses of securities available-for-sale [Abstract]
Amortized cost	[1]	720,562,000	436,531,000
Gross unrealized gains	[1]	17,359,000	4,646,000
Gross unrealized losses	[1]	48,000	99,000
Fair/Book value	[1]	737,873,000	441,078,000
Corporate Securities [Member]
Amortized cost, fair values, and unrealized gains and losses of securities available-for-sale [Abstract]
Amortized cost		45,010,000
Gross unrealized gains		927,000
Gross unrealized losses		18,000
Fair/Book value		45,919,000
Other [Member]
Amortized cost, fair values, and unrealized gains and losses of securities available-for-sale [Abstract]
Amortized cost		492,000	515,000
Gross unrealized gains		0	0
Gross unrealized losses		0	0
Fair/Book value		$ 492,000	$ 515,000
[1]	All Mortgage Backed Securities were issued by an agency or government sponsored entity of the U.S. government.

Investment Securities, Securi_2

Investment Securities, Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Book values, estimated fair values and unrealized gains and losses of investments classified as held-to-maturity [Abstract]
Amortized cost	$ 68,933	$ 60,229
Gross unrealized gains	1,116	880
Gross unrealized losses	0	12
Fair value	70,049	61,097
Obligations of States and Political Subdivisions [Member]
Book values, estimated fair values and unrealized gains and losses of investments classified as held-to-maturity [Abstract]
Amortized cost	68,933	60,229
Gross unrealized gains	1,116	880
Gross unrealized losses	0	12
Fair value	$ 70,049	$ 61,097

Investment Securities, Contract

Investment Securities, Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Amortized Cost [Abstract]
Within one year	$ 5,479
After one year through five years	25,427
After five years through ten years	30,281
After ten years	7,426
Amortized cost, excluding securities without single maturity date	68,613
Investment securities not due at a single maturity date, mortgage-backed securities	720,562
Amortized cost	789,175	$ 502,693
Fair Value [Abstract]
Within one year	5,512
After one year through five years	26,096
After five years through ten years	30,912
After ten years	7,339
Fair value, excluding investment securities not due at a single maturity date	69,859
Investment securities not due at a single maturity date, mortgage-backed securities	737,873
Fair value	807,732	507,386
Amortized Cost [Abstract]
Within one year	8,309
After one year through five years	5,137
After five years through ten years	23,493
After ten years	31,994
Book value, excluding securities without single maturity date	68,933
Investment securities not due at a single maturity date, mortgage-backed securities	0
Amortized cost	68,933	60,229
Fair Value [Abstract]
Within one year	8,309
After one year through five years	5,179
After five years through ten years	24,451
After ten years	32,110
Fair/Book value, excluding securities without single maturity date	70,049
Investment securities not due at a single maturity date, mortgage-backed securities	0
Fair value	$ 70,049	$ 61,097

Investment Securities, Securi_3

Investment Securities, Securities in Continuous Unrealized Loss Position (Details)	12 Months Ended
	Dec. 31, 2020USD ($)Security	Dec. 31, 2019USD ($)
Investment Securities, Qualitative Disclosure [Abstract]
Number of investment securities held | Security	649
Less than 12 months, number of positions | Security	13
12 months or more, number of positions | Security	83
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 25,924,000	$ 133,698,000
Less than 12 months unrealized loss	66,000	94,000
12 months or more fair value	6,303,000	5,911,000
12 months or more unrealized loss	93,000	118,000
Total fair value	32,227,000	139,609,000
Total unrealized loss	$ 159,000	212,000
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value		355,000
12 months or more fair value		0
Total fair value		355,000
Less than 12 months unrealized loss		12,000
12 months or more unrealized loss		0
Total unrealized loss		12,000
Number of HTM investments with gross unrealized losses | Security	0
Obligations of States and Political Subdivisions [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value		355,000
12 months or more fair value		0
Total fair value		355,000
Less than 12 months unrealized loss		12,000
12 months or more unrealized loss		0
Total unrealized loss	$ 0	12,000
Less than 12 months, number of positions | Security	0
12 months or more, number of positions | Security	0
Percentage of portfolio rated at either issue or issuer level	100.00%
Government Agency & Government-Sponsored Entities [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, number of positions | Security	0
12 months or more, number of positions | Security	0
US Treasury Notes [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, number of positions | Security	0
12 months or more, number of positions | Security	0
US Government Agency SBA [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 1,741,000	2,693,000
Less than 12 months unrealized loss	3,000	6,000
12 months or more fair value	6,126,000	5,198,000
12 months or more unrealized loss	90,000	107,000
Total fair value	7,867,000	7,891,000
Total unrealized loss	$ 93,000	113,000
Less than 12 months, number of positions | Security	8
12 months or more, number of positions | Security	65
Mortgage Backed Securities [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 20,142,000	131,005,000
Less than 12 months unrealized loss	45,000	88,000
12 months or more fair value	177,000	713,000
12 months or more unrealized loss	3,000	11,000
Total fair value	20,319,000	131,718,000
Total unrealized loss	$ 48,000	$ 99,000
Less than 12 months, number of positions | Security	3
12 months or more, number of positions | Security	18
Corporate Securities [Member]
Available-for-sale Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months fair value	$ 4,041,000
Less than 12 months unrealized loss	18,000
12 months or more fair value	0
12 months or more unrealized loss	0
Total fair value	4,041,000
Total unrealized loss	$ 18,000
Less than 12 months, number of positions | Security	2
12 months or more, number of positions | Security	0

Investment Securities, Proceeds

Investment Securities, Proceeds From Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Proceeds from sales and calls of securities [Abstract]
Gross proceeds	$ 5,080	$ 5,300	$ 99,323
Gross gains	40	1	78
Gross losses	$ 0	$ 0	$ 1,338

Investment Securities, Pledged

Investment Securities, Pledged Securities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Investment Securities [Abstract]
Carrying amount of pledged securities	$ 439.7	$ 352.5

Federal Home Loan Bank Stock _2

Federal Home Loan Bank Stock and Other Equity Securities, at Cost (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank Stock and Other Equity Securities, at Cost [Abstract]
FHLB stock and other equity securities	$ 12.7	$ 12.7

Loans & Leases (Details)

Loans & Leases (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2020USD ($)Loan	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		$ 3,111,533	$ 2,680,011
Less: Unearned Income		11,941	6,984
Total Loans & Leases		3,099,592	2,673,027
Less: Allowance for Credit Losses		58,862	55,012	$ 55,266
Loans & Leases, Net		3,040,730	2,618,015
Federal Home Loan Bank [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Collateral on borrowing lines		808,900
Maximum borrowing capacity		630,500
Federal Reserve Bank [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Collateral on borrowing lines		706,200
Maximum borrowing capacity		438,100
Paycheck Protection Program [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		224,309
Loans funded for the small business customers		$ 347,400
Number of small business customers | Loan		1,540
Commercial Real Estate [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		$ 971,326	846,486
Total Loans & Leases		958,980	838,570
Less: Allowance for Credit Losses		27,679	11,053	11,609
Agricultural Real Estate [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		643,014	625,767
Total Loans & Leases		643,014	625,767
Less: Allowance for Credit Losses		8,633	15,128	14,092
Real Estate Construction [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		185,741	115,644
Total Loans & Leases		185,741	115,644
Less: Allowance for Credit Losses		1,643	1,949	1,249
Residential 1st Mortgages [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		299,379	255,253
Total Loans & Leases		299,379	255,253
Less: Allowance for Credit Losses		960	855	880
Home Equity Lines and Loans [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		34,239	39,270
Total Loans & Leases		34,239	39,270
Less: Allowance for Credit Losses		2,024	2,675	2,761
Agricultural [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		264,372	292,904
Total Loans & Leases		264,372	292,904
Less: Allowance for Credit Losses		4,814	8,076	8,242
Commercial [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		374,816	384,795
Total Loans & Leases		374,816	384,795
Less: Allowance for Credit Losses		9,961	11,466	11,656
Consumer & Other [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases	[1]	235,529	15,422
Total Loans & Leases		235,529	15,422
Less: Allowance for Credit Losses		333	456	494
Leases [Member]
Loans and Leases Receivable, Net Amount [Abstract]
Total Gross Loans & Leases		103,117	104,470
Total Loans & Leases		103,522	105,402
Less: Allowance for Credit Losses		$ 1,731	$ 3,162	$ 4,022
[1]	Includes CARES Act Small Business Administration Paycheck Protection Program loans of $224,309 as of December 31, 2020.

Allowance for Credit Losses, Al

Allowance for Credit Losses, Allocation of The Allowance For Loan Losses by Portfolio Segment and By Impairment Methodology (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for Credit Losses [Roll Forward]
Beginning Balance				$ 55,012,000				$ 55,266,000	$ 55,012,000	$ 55,266,000
Charge-Offs									(1,174,000)	(675,000)
Recoveries									524,000	221,000
Provision	$ 2,500,000	$ 1,700,000	$ 300,000	0	$ 0	$ 0	$ 200,000	0	4,500,000	200,000	$ 5,533,000
Ending Balance	58,862,000				55,012,000				58,862,000	55,012,000	55,266,000
Ending Balance Individually Evaluated for Impairment	289,000				661,000				289,000	661,000
Ending Balance Collectively Evaluated for Impairment	58,573,000				54,351,000				58,573,000	54,351,000
Loans & Leases [Abstract]
Ending Balance	3,099,592,000				2,673,027,000				3,099,592,000	2,673,027,000
Ending Balance Individually Evaluated for Impairment	9,238,000				14,691,000				9,238,000	14,691,000
Ending Balance Collectively Evaluated for Impairment	3,090,354,000				2,658,336,000				3,090,354,000	2,658,336,000
Commercial Real Estate [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				11,053,000				11,609,000	11,053,000	11,609,000
Charge-Offs									0	0
Recoveries									0	0
Provision									16,626,000	(556,000)
Ending Balance	27,679,000				11,053,000				27,679,000	11,053,000	11,609,000
Ending Balance Individually Evaluated for Impairment	0				234,000				0	234,000
Ending Balance Collectively Evaluated for Impairment	27,679,000				10,819,000				27,679,000	10,819,000
Loans & Leases [Abstract]
Ending Balance	958,980,000				838,570,000				958,980,000	838,570,000
Ending Balance Individually Evaluated for Impairment	104,000				4,524,000				104,000	4,524,000
Ending Balance Collectively Evaluated for Impairment	958,876,000				834,046,000				958,876,000	834,046,000
Agricultural Real Estate [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				15,128,000				14,092,000	15,128,000	14,092,000
Charge-Offs									0	0
Recoveries									81,000	38,000
Provision									(6,576,000)	998,000
Ending Balance	8,633,000				15,128,000				8,633,000	15,128,000	14,092,000
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	8,633,000				15,128,000				8,633,000	15,128,000
Loans & Leases [Abstract]
Ending Balance	643,014,000				625,767,000				643,014,000	625,767,000
Ending Balance Individually Evaluated for Impairment	5,629,000				5,654,000				5,629,000	5,654,000
Ending Balance Collectively Evaluated for Impairment	637,385,000				620,113,000				637,385,000	620,113,000
Real Estate Construction [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				1,949,000				1,249,000	1,949,000	1,249,000
Charge-Offs									0	0
Recoveries									0	0
Provision									(306,000)	700,000
Ending Balance	1,643,000				1,949,000				1,643,000	1,949,000	1,249,000
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	1,643,000				1,949,000				1,643,000	1,949,000
Loans & Leases [Abstract]
Ending Balance	185,741,000				115,644,000				185,741,000	115,644,000
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	185,741,000				115,644,000				185,741,000	115,644,000
Residential 1st Mortgages [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				855,000				880,000	855,000	880,000
Charge-Offs									0	0
Recoveries									52,000	13,000
Provision									53,000	(38,000)
Ending Balance	960,000				855,000				960,000	855,000	880,000
Ending Balance Individually Evaluated for Impairment	117,000				118,000				117,000	118,000
Ending Balance Collectively Evaluated for Impairment	843,000				737,000				843,000	737,000
Loans & Leases [Abstract]
Ending Balance	299,379,000				255,253,000				299,379,000	255,253,000
Ending Balance Individually Evaluated for Impairment	2,365,000				2,368,000				2,365,000	2,368,000
Ending Balance Collectively Evaluated for Impairment	297,014,000				252,885,000				297,014,000	252,885,000
Home Equity Lines and Loans [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				2,675,000				2,761,000	2,675,000	2,761,000
Charge-Offs									(7,000)	0
Recoveries									78,000	28,000
Provision									(722,000)	(114,000)
Ending Balance	2,024,000				2,675,000				2,024,000	2,675,000	2,761,000
Ending Balance Individually Evaluated for Impairment	8,000				12,000				8,000	12,000
Ending Balance Collectively Evaluated for Impairment	2,016,000				2,663,000				2,016,000	2,663,000
Loans & Leases [Abstract]
Ending Balance	34,239,000				39,270,000				34,239,000	39,270,000
Ending Balance Individually Evaluated for Impairment	158,000				229,000				158,000	229,000
Ending Balance Collectively Evaluated for Impairment	34,081,000				39,041,000				34,081,000	39,041,000
Agricultural [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				8,076,000				8,242,000	8,076,000	8,242,000
Charge-Offs									0	0
Recoveries									0	0
Provision									(3,262,000)	(166,000)
Ending Balance	4,814,000				8,076,000				4,814,000	8,076,000	8,242,000
Ending Balance Individually Evaluated for Impairment	92,000				99,000				92,000	99,000
Ending Balance Collectively Evaluated for Impairment	4,722,000				7,977,000				4,722,000	7,977,000
Loans & Leases [Abstract]
Ending Balance	264,372,000				292,904,000				264,372,000	292,904,000
Ending Balance Individually Evaluated for Impairment	495,000				188,000				495,000	188,000
Ending Balance Collectively Evaluated for Impairment	263,877,000				292,716,000				263,877,000	292,716,000
Commercial [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				11,466,000				11,656,000	11,466,000	11,656,000
Charge-Offs									(1,101,000)	(592,000)
Recoveries									280,000	90,000
Provision									(684,000)	312,000
Ending Balance	9,961,000				11,466,000				9,961,000	11,466,000	11,656,000
Ending Balance Individually Evaluated for Impairment	20,000				137,000				20,000	137,000
Ending Balance Collectively Evaluated for Impairment	9,941,000				11,329,000				9,941,000	11,329,000
Loans & Leases [Abstract]
Ending Balance	374,816,000				384,795,000				374,816,000	384,795,000
Ending Balance Individually Evaluated for Impairment	233,000				1,528,000				233,000	1,528,000
Ending Balance Collectively Evaluated for Impairment	374,583,000				383,267,000				374,583,000	383,267,000
Consumer & Other [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				456,000				494,000	456,000	494,000
Charge-Offs									(66,000)	(83,000)
Recoveries									33,000	52,000
Provision									(90,000)	(7,000)
Ending Balance	333,000				456,000				333,000	456,000	494,000
Ending Balance Individually Evaluated for Impairment	52,000				61,000				52,000	61,000
Ending Balance Collectively Evaluated for Impairment	281,000				395,000				281,000	395,000
Loans & Leases [Abstract]
Ending Balance	235,529,000				15,422,000				235,529,000	15,422,000
Ending Balance Individually Evaluated for Impairment	254,000				200,000				254,000	200,000
Ending Balance Collectively Evaluated for Impairment	235,275,000				15,222,000				235,275,000	15,222,000
Leases [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				3,162,000				4,022,000	3,162,000	4,022,000
Charge-Offs									0	0
Recoveries									0	0
Provision									(1,431,000)	(860,000)
Ending Balance	1,731,000				3,162,000				1,731,000	3,162,000	4,022,000
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	1,731,000				3,162,000				1,731,000	3,162,000
Loans & Leases [Abstract]
Ending Balance	103,522,000				105,402,000				103,522,000	105,402,000
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	103,522,000				105,402,000				103,522,000	105,402,000
Unallocated [Member]
Allowance for Credit Losses [Roll Forward]
Beginning Balance				$ 192,000				$ 261,000	192,000	261,000
Charge-Offs									0	0
Recoveries									0	0
Provision									892,000	(69,000)
Ending Balance	1,084,000				192,000				1,084,000	192,000	$ 261,000
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	1,084,000				192,000				1,084,000	192,000
Loans & Leases [Abstract]
Ending Balance	0				0				0	0
Ending Balance Individually Evaluated for Impairment	0				0				0	0
Ending Balance Collectively Evaluated for Impairment	0				0				0	0
Restructured Loans [Member]
Loans & Leases [Abstract]
Ending Balance Individually Evaluated for Impairment	$ 876,000				$ 2,600,000				$ 876,000	$ 2,600,000

Allowance for Credit Losses, Lo

Allowance for Credit Losses, Loan & Lease Portfolio Including Unearned Income Allocated by Management's Internal Credit Ratings (Details) - USD ($) $ in Thousands	Dec. 31, 2020		Dec. 31, 2019
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	$ 3,099,592		$ 2,673,027
Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	3,071,556	[1]	2,643,190	[2]
Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	9,405		13,621
Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	18,631		16,216
Doubtful [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Loss [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Watch [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	958,200		744,700
Commercial Real Estate [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	958,980		838,570
Commercial Real Estate [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	946,621	[1]	831,941	[2]
Commercial Real Estate [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	7,849		6,629
Commercial Real Estate [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	4,510		0
Agricultural Real Estate [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	643,014		625,767
Agricultural Real Estate [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	631,043	[1]	611,792	[2]
Agricultural Real Estate [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	400		1,136
Agricultural Real Estate [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	11,571		12,839
Real Estate Construction [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	185,741		115,644
Real Estate Construction [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	185,741	[1]	115,644	[2]
Real Estate Construction [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Real Estate Construction [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Residential 1st Mortgages [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	299,379		255,253
Residential 1st Mortgages [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	298,689	[1]	254,459	[2]
Residential 1st Mortgages [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Residential 1st Mortgages [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	690		794
Home Equity Lines and Loans [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	34,239		39,270
Home Equity Lines and Loans [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	34,058	[1]	39,092	[2]
Home Equity Lines and Loans [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Home Equity Lines and Loans [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	181		178
Agricultural [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	264,372		292,904
Agricultural [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	263,781	[1]	289,276	[2]
Agricultural [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	96		2,617
Agricultural [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	495		1,011
Commercial [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	374,816		384,795
Commercial [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	373,038	[1]	380,650	[2]
Commercial [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	1,060		3,239
Commercial [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	718		906
Consumer & Other [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	235,529		15,422
Consumer & Other [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	235,063	[1]	14,934	[2]
Consumer & Other [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Consumer & Other [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	466		488
Leases [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	103,522		105,402
Leases [Member] | Pass [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	103,522	[1]	105,402	[2]
Leases [Member] | Special Mention [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	0		0
Leases [Member] | Substandard [Member]
Loan & Lease Portfolio Allocated by Management's Internal Risk Ratings [Abstract]
Loans & leases	$ 0		$ 0
[1]	Includes “Watch” loans of $958.2 million.
[2]	Includes “Watch” loans of $744.7 million.

Allowance for Credit Losses, Ag

Allowance for Credit Losses, Aging Analysis of Loan & Lease Portfolio Including Unearned Income by the Time Past Due (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	$ 0	$ 0
Nonaccrual	495,000	0
Total Past Due	506,000	352,000
Current	3,099,086,000	2,672,675,000
Total Loans & Leases	3,099,592,000	2,673,027,000
Interest income forgone on nonaccrual loans	22,000	0	$ 0
30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	11,000	352,000
60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Commercial Real Estate [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	0
Current	958,980,000	838,570,000
Total Loans & Leases	958,980,000	838,570,000
Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Agricultural Real Estate [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	495,000	0
Total Past Due	495,000	0
Current	642,519,000	625,767,000
Total Loans & Leases	643,014,000	625,767,000
Agricultural Real Estate [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Agricultural Real Estate [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Real Estate Construction [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	240,000
Current	185,741,000	115,404,000
Total Loans & Leases	185,741,000	115,644,000
Real Estate Construction [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	240,000
Real Estate Construction [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Residential 1st Mortgages [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	0
Current	299,379,000	255,253,000
Total Loans & Leases	299,379,000	255,253,000
Residential 1st Mortgages [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Residential 1st Mortgages [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Home Equity Lines and Loans [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	0
Current	34,239,000	39,270,000
Total Loans & Leases	34,239,000	39,270,000
Home Equity Lines and Loans [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Home Equity Lines and Loans [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Agricultural [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	0
Current	264,372,000	292,904,000
Total Loans & Leases	264,372,000	292,904,000
Agricultural [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Agricultural [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Commercial [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	77,000
Current	374,816,000	384,718,000
Total Loans & Leases	374,816,000	384,795,000
Commercial [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	77,000
Commercial [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Consumer & Other [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	11,000	35,000
Current	235,518,000	15,387,000
Total Loans & Leases	235,529,000	15,422,000
Consumer & Other [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	11,000	35,000
Consumer & Other [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Leases [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	0
Current	103,522,000	105,402,000
Total Loans & Leases	103,522,000	105,402,000
Leases [Member] | 30-59 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	0	0
Leases [Member] | 60-89 Days Past Due [Member]
Aging Analysis of Loan & Lease Portfolio by Time Past Due [Abstract]
Total Past Due	$ 0	$ 0

Allowance for Credit Losses, Im

Allowance for Credit Losses, Impaired Loans & Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
With no related allowance recorded [Abstract]
Recorded Investment	$ 5,716	$ 5,740
Unpaid Principal Balance	5,716	5,740
Average Recorded Investment	6,772	6,167
Interest Income Recognized	403	388
With an allowance recorded [Abstract]
Recorded Investment	2,651	6,368
Unpaid Principal Balance	2,929	6,587
Related Allowance	248	612
Average Recorded Investment	2,603	6,328
Interest Income Recognized	171	230
Total [Abstract]
Recorded Investment	8,367	12,108
Unpaid Principal Balance	8,645	12,327
Related Allowance	248	612
Average Recorded Investment	9,375	12,495
Interest Income Recognized	574	618
Commercial Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment	84	86
Unpaid Principal Balance	84	86
Average Recorded Investment	764	90
Interest Income Recognized	35	8
With an allowance recorded [Abstract]
Recorded Investment	0	2,822
Unpaid Principal Balance	0	2,822
Related Allowance	0	234
Average Recorded Investment	21	2,853
Interest Income Recognized	1	94
Total [Abstract]
Related Allowance	0	234
Agricultural Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment	5,629	5,654
Unpaid Principal Balance	5,629	5,654
Average Recorded Investment	5,629	6,069
Interest Income Recognized	352	379
With an allowance recorded [Abstract]
Recorded Investment	0
Unpaid Principal Balance	0
Related Allowance	0
Average Recorded Investment	137
Interest Income Recognized	0
Total [Abstract]
Related Allowance	0
Residential 1st Mortgages [Member]
With an allowance recorded [Abstract]
Recorded Investment	1,671	1,562
Unpaid Principal Balance	1,895	1,770
Related Allowance	84	74
Average Recorded Investment	1,652	1,601
Interest Income Recognized	76	73
Total [Abstract]
Related Allowance	84	74
Home Equity Lines and Loans [Member]
With an allowance recorded [Abstract]
Recorded Investment	64	68
Unpaid Principal Balance	75	79
Related Allowance	3	7
Average Recorded Investment	66	71
Interest Income Recognized	4	4
Total [Abstract]
Related Allowance	3	7
Agricultural [Member]
With no related allowance recorded [Abstract]
Recorded Investment	3
Unpaid Principal Balance	3
Average Recorded Investment	2
Interest Income Recognized	0
With an allowance recorded [Abstract]
Recorded Investment	492	188
Unpaid Principal Balance	534	188
Related Allowance	92	99
Average Recorded Investment	410	195
Interest Income Recognized	59	6
Total [Abstract]
Related Allowance	92	99
Commercial [Member]
With no related allowance recorded [Abstract]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	377	8
Interest Income Recognized	16	1
With an allowance recorded [Abstract]
Recorded Investment	234	1,528
Unpaid Principal Balance	234	1,528
Related Allowance	13	137
Average Recorded Investment	123	1,554
Interest Income Recognized	18	53
Total [Abstract]
Related Allowance	13	137
Consumer & Other [Member]
With an allowance recorded [Abstract]
Recorded Investment	190	200
Unpaid Principal Balance	191	200
Related Allowance	56	61
Average Recorded Investment	194	54
Interest Income Recognized	13	0
Total [Abstract]
Related Allowance	$ 56	$ 61

Allowance for Credit Losses, _2

Allowance for Credit Losses, Loans by Class Modified as Troubled Debt Restructured Loans (Details)	9 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020USD ($)Loan	Dec. 31, 2019USD ($)Loan
CARES Act [Abstract]
Loans restructured under the CARES act	$ 277,600,000
Loans remaining in deferral status	3,700,000	$ 3,700,000
Troubled Debt Restructured Loans [Abstract]
Specific reserves allocated to troubled debt restructured loans & leases	158,000	158,000	$ 612,000
Commitments to lend additional amounts to customers with outstanding loans that are classified as troubled debt restructurings	0	$ 0	$ 0
Loans by class modified as troubled debt restructured loans [Abstract]
Number of Loans | Loan		6	2
Pre-Modification Outstanding Recorded Investment		$ 875,000	$ 396,000
Post-Modification Recorded Outstanding Investment		875,000	396,000
Increase in allowance for loan losses due to TDR		120,000	101,000
TDR's charge-offs		$ 0	$ 0
Number of loans modified as troubled debt restructurings with subsequent payment defaults | Loan		0	0
Stated Interest Rate Reduction [Member]
Troubled Debt Restructured Loans [Abstract]
Period of modifications		5 years
Extended Maturity [Member] | Minimum [Member]
Troubled Debt Restructured Loans [Abstract]
Period of modifications		3 months
Extended Maturity [Member] | Maximum [Member]
Troubled Debt Restructured Loans [Abstract]
Period of modifications		10 years
Performing [Member]
Troubled Debt Restructured Loans [Abstract]
Troubled debt restructured loans	$ 7,900,000	$ 7,900,000	$ 12,100,000
Residential 1st Mortgages [Member]
Loans by class modified as troubled debt restructured loans [Abstract]
Number of Loans | Loan		2
Pre-Modification Outstanding Recorded Investment		$ 156,000
Post-Modification Recorded Outstanding Investment		$ 156,000
Agricultural [Member]
Loans by class modified as troubled debt restructured loans [Abstract]
Number of Loans | Loan		3	1
Pre-Modification Outstanding Recorded Investment		$ 495,000	$ 201,000
Post-Modification Recorded Outstanding Investment		$ 495,000	$ 201,000
Commercial [Member]
Loans by class modified as troubled debt restructured loans [Abstract]
Number of Loans | Loan		1
Pre-Modification Outstanding Recorded Investment		$ 224,000
Post-Modification Recorded Outstanding Investment		$ 224,000
Consumer & Other [Member]
Loans by class modified as troubled debt restructured loans [Abstract]
Number of Loans | Loan			1
Pre-Modification Outstanding Recorded Investment			$ 195,000
Post-Modification Recorded Outstanding Investment			$ 195,000

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment, Net [Abstract]
Subtotal	$ 85,749,000	$ 78,800,000
Less: Accumulated Depreciation and Amortization	35,602,000	33,529,000
Total	50,147,000	45,271,000
Depreciation and amortization	2,769,000	2,756,000	$ 2,421,000
Rental income	434,000	183,000	$ 173,000
Land and Buildings [Member]
Property, Plant and Equipment, Net [Abstract]
Subtotal	60,246,000	53,997,000
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment, Net [Abstract]
Subtotal	21,750,000	21,058,000
Leasehold Improvements [Member]
Property, Plant and Equipment, Net [Abstract]
Subtotal	$ 3,753,000	$ 3,745,000

Other Real Estate (Details)

Other Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Real Estate [Abstract]
Other real estate, net	$ 873,000	$ 873,000

Time Deposits (Details)

Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Time Deposits $250,000 or more [Abstract]
Balance	$ 185,944	$ 257,392
Maturities of Time Deposits [Abstract]
2021	373,332
2022	38,620
2023	7,571
2024	715
2025	1,630
Total	$ 421,868	$ 517,922

Income Taxes, Current and Defer

Income Taxes, Current and Deferred Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current [Abstract]
Federal									$ 12,174	$ 14,798	$ 2,517
State									9,005	7,733	6,224
Total Current									21,179	22,531	8,741
Deferred [Abstract]
Federal									(1,115)	(3,500)	5,622
State									(847)	246	(160)
Total Deferred									(1,962)	(3,254)	5,462
Total Provision for Taxes	$ 5,298	$ 4,945	$ 4,533	$ 4,441	$ 5,037	$ 4,660	$ 4,903	$ 4,677	$ 19,217	$ 19,277	$ 14,203

Income Taxes, Effective Income

Income Taxes, Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax Provision at Federal Statutory Rate									$ 16,370	$ 15,816	$ 12,543
Interest on Obligations of States and Political Subdivisions exempt from Federal Taxation									(350)	(358)	(338)
State and Local Income Taxes, Net of Federal Income Tax Benefit									6,445	6,304	4,791
Bank Owned Life Insurance									(444)	(460)	(434)
Low-Income Housing Tax Credit									(2,655)	(2,078)	(1,624)
Out of Period Adjustment									0	0	(802)
Other, Net									(149)	53	67
Total Provision for Taxes	$ 5,298	$ 4,945	$ 4,533	$ 4,441	$ 5,037	$ 4,660	$ 4,903	$ 4,677	$ 19,217	$ 19,277	$ 14,203
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax Provision at Federal Statutory Rate									21.00%	21.00%	21.00%
Interest on Obligations of States and Political Subdivisions exempt from Federal Taxation									(0.40%)	(0.50%)	(0.50%)
State and Local Income Taxes, Net of Federal Income Tax Benefit									8.30%	8.40%	7.90%
Bank Owned Life Insurance									(0.60%)	(0.60%)	(0.70%)
Low-Income Housing Tax Credit									(3.40%)	(2.80%)	(2.70%)
Out of Period Adjustment									0.00%	0.00%	(1.30%)
Other, Net									(0.20%)	0.10%	0.10%
Total Provision for Taxes									24.70%	25.60%	23.80%

Income Taxes, Components of Net

Income Taxes, Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Tax Assets [Abstract]
Allowance for Credit Losses	$ 17,248	$ 15,925
Accrued Liabilities	8,526	8,452
Deferred Compensation	13,707	14,200
State Franchise Tax	1,891	1,624
Tax Credit Carry Forward	0	1,266
Lease Liability	1,454	1,487
Acquired Net Operating Loss	643	673
Fair Value Adjustment on Loans Acquired	237	286
Fair Value Adjustment on ORE Acquired	108	108
PPP Loan Service Fee Income	1,367	0
Low-Income Housing Investment	384	286
Other	7	2
Total Deferred Tax Assets	45,572	44,309
Deferred Tax Liabilities [Abstract]
Premises and Equipment	(1,684)	(1,974)
Securities Accretion	(588)	(370)
Unrealized Gain on Securities Available-for-Sale	(5,156)	(935)
Leasing Activities	(17,183)	(19,226)
Core Deposit Intangible Asset	(1,186)	(1,372)
ROU Lease Asset	(1,428)	(1,471)
Prepaid	(45)	(66)
Other	(1,209)	(898)
Total Deferred Tax Liabilities	(28,479)	(26,312)
Net Deferred Tax Assets	$ 17,093	$ 17,997

Short Term Borrowings (Details)

Short Term Borrowings (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Short Term Borrowings [Abstract]
Unused lines of credit	$ 1,300	$ 1,300
Advances from FHLB	0	0
Federal Funds purchased or advances from FRB	$ 0	$ 0

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Federal Home Loan Bank Advances, short term	$ 0	$ 0
Federal Home Loan Bank [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Collateral on borrowing lines	808.9
Federal Home Loan Bank of San Francisco [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Federal Home Loan Bank Advances, short term	0	0
Federal Home Loan Bank Advances, long term	0	$ 0
Borrowing capacity	630.5
Federal Home Loan Bank of San Francisco [Member] | Federal Home Loan Bank [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures [Abstract]
Collateral on borrowing lines	$ 808.9

Long-term Subordinated Debent_2

Long-term Subordinated Debentures (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)$ / shares
Subordinated Debentures [Abstract]
Guaranteed preferred beneficial interests	$ 10
Liquidation value (per capital security) | $ / shares	$ 1,000
Junior Subordinated Debentures [Member]
Subordinated Debentures [Abstract]
Junior subordinated debentures	$ 10.3
Debt instrument, maturity date	Dec. 17, 2033
Junior Subordinated Debentures [Member] | LIBOR [Member]
Subordinated Debentures [Abstract]
Term of variable rate	3 months
Basis spread on variable rate	2.85%

Shareholders' Equity, Stock Rep

Shareholders' Equity, Stock Repurchase Program, Dividends and Issuance of Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 05, 2008	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 23, 2020	Feb. 18, 2016
Stock Repurchased [Abstract]
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01	$ 0.01
Stock Issued [Abstract]
Per share price of shares issued (in dollars per share)		$ 770	$ 770
Minimum [Member]
Stock Issued [Abstract]
Per share price of shares issued (in dollars per share)				715	$ 635
Maximum [Member]
Stock Issued [Abstract]
Per share price of shares issued (in dollars per share)				$ 770	$ 690
Directors and Officers [Member]
Stock Issued [Abstract]
Issuance of Common Stock (in shares)					2,400
Non-qualified Deferred Compensation Retirement Plans [Member]
Stock Issued [Abstract]
Issuance of common stock (in shares)			523	9,312	13,520
1998 Common Stock Repurchase Plan [Member]
Stock Repurchased [Abstract]
Approved funds available for common stock repurchase program		$ 20	$ 20
Number of shares of stock purchased (in shares)			0	0
2020 Common Stock Repurchase Plan [Member]
Stock Repurchased [Abstract]
Shares repurchased from shareholders		$ 2.8
2020 Common Stock Repurchase Plan [Member] | Maximum [Member]
Stock Repurchased [Abstract]
Approved funds available for common stock repurchase program						$ 8.5
Share Purchase Rights Plan [Member]
Stock Repurchased [Abstract]
Number of preferred stock purchase rights declared as dividend for each share of common stock (in shares)	1
Common stock, par value (in dollars per share)	$ 0.01
Dividend, declared date			Aug. 5, 2008
Dividend, record date			Aug. 15, 2008
Threshold percentage of beneficial ownership or tender offer of Acquiring Person for triggering exercise of rights	10.00%
Number of shares of preferred stock which the registered holder of each right is entitled to purchase (in shares)							0.01
Redeemable price for a right issue (in dollars per share)		$ 0.001	$ 0.001
Market value of common stock shares as multiple of exercise price of right	2
Term of extension of expiration date	7 years
Stock Issued [Abstract]
Per share price of shares issued (in dollars per share)		$ 1,600	$ 1,600				$ 1,200
Share Purchase Rights Plan [Member] | Series A Junior Participating Preferred Stock [Member]
Stock Repurchased [Abstract]
Number of shares of preferred stock which the registered holder of each right is entitled to purchase (in shares)		0.01	0.01
Preferred stock, par value (in dollars per share)		$ 0	$ 0
Stock Issued [Abstract]
Per share price of shares issued (in dollars per share)	$ 1,600

Shareholders' Equity, Complianc

Shareholders' Equity, Compliance with Regulatory Capital Requirements (Details) $ in Thousands	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Total Capital to Risk Weighted Assets [Abstract]
Actual Amount	$ 450,890	$ 400,258
Minimum Regulatory Capital Requirements, Amount	$ 286,539	$ 259,028
Total Capital to Risk Weighted Assets, Ratio [Abstract]
Actual Ratio	0.1259	0.1236
Minimum Regulatory Capital Requirements, Ratio	0.0800	0.0800
Total Common Equity Tier 1 Capital [Abstract]
Actual Amount	$ 395,941	$ 349,601
Minimum Regulatory Capital Requirements, Amount	$ 161,178	$ 145,703
Total Common Equity Tier 1 Capital, Ratio [Abstract]
Actual Ratio	0.1105	0.1080
Minimum Regulatory Capital Requirements, Ratio	0.0450	0.0450
Tier 1 Capital to Risk Weighted Assets [Abstract]
Actual Amount	$ 405,941	$ 359,601
Minimum Regulatory Capital Requirements, Amount	$ 214,904	$ 194,271
Tier 1 Capital to Risk Weighted Assets, Ratio [Abstract]
Actual Ratio	0.1133	0.1111
Minimum Regulatory Capital Requirements, Ratio	0.0600	0.0600
Tier 1 Capital to Average Assets [Abstract]
Actual Amount	$ 405,941	$ 359,601
Minimum Regulatory Capital Requirements, Amount	$ 177,820	$ 145,255
Tier 1 Capital to Average Assets, Ratio [Abstract]
Actual Ratio	0.0913	0.0990
Minimum Regulatory Capital Requirements, Ratio	0.0400	0.0300
Bank [Member]
Total Capital to Risk Weighted Assets [Abstract]
Actual Amount	$ 446,251	$ 399,230
Minimum Regulatory Capital Requirements, Amount	286,462	259,012
Well Capitalized Under Prompt Corrective Action, Amount	$ 358,077	$ 323,765
Total Capital to Risk Weighted Assets, Ratio [Abstract]
Actual Ratio	0.1246	0.1233
Minimum Regulatory Capital Requirements, Ratio	0.0800	0.0800
Well Capitalized Under Prompt Corrective Action, Ratio	0.1000	0.1000
Total Common Equity Tier 1 Capital [Abstract]
Actual Amount	$ 401,313	$ 358,576
Minimum Regulatory Capital Requirements, Amount	161,135	145,694
Well Capitalized Under Prompt Corrective Action, Amount	$ 232,750	$ 210,447
Total Common Equity Tier 1 Capital, Ratio [Abstract]
Actual Ratio	0.1121	0.1108
Minimum Regulatory Capital Requirements, Ratio	0.0450	0.0450
Well Capitalized Under Prompt Corrective Action, Ratio	0.0650	0.0650
Tier 1 Capital to Risk Weighted Assets [Abstract]
Actual Amount	$ 401,313	$ 358,576
Minimum Regulatory Capital Requirements, Amount	214,846	194,259
Well Capitalized Under Prompt Corrective Action, Amount	$ 286,462	$ 259,012
Tier 1 Capital to Risk Weighted Assets, Ratio [Abstract]
Actual Ratio	0.1121	0.1108
Minimum Regulatory Capital Requirements, Ratio	0.0600	0.0600
Well Capitalized Under Prompt Corrective Action, Ratio	0.0800	0.0800
Tier 1 Capital to Average Assets [Abstract]
Actual Amount	$ 401,313	$ 358,576
Minimum Regulatory Capital Requirements, Amount	177,605	145,079
Well Capitalized Under Prompt Corrective Action, Amount	$ 222,006	$ 181,349
Tier 1 Capital to Average Assets, Ratio [Abstract]
Actual Ratio	0.0904	0.0989
Minimum Regulatory Capital Requirements, Ratio	0.0400	0.0300
Well Capitalized Under Prompt Corrective Action, Ratio	0.0500	0.0500

Dividends and Basic and Dilut_3

Dividends and Basic and Diluted Earnings Per Common Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends and Basic and Diluted Earnings Per Common Share [Abstract]
Cash dividends declared on common stock									$ 11,700,000	$ 11,221,000	$ 11,151,000
Cash dividends paid per share of common stock (in dollars per share)									$ 14.75	$ 14.20	$ 13.90
Percentage increase in cash dividend per share									3.90%
Basic and Diluted Earnings per Common Share [Abstract]
Net Income	$ 15,493,000	$ 14,810,000	$ 14,309,000	$ 14,122,000	$ 14,644,000	$ 13,738,000	$ 14,105,000	$ 13,549,000	$ 58,734,000	$ 56,036,000	$ 45,527,000
Weighted Average Number of Common Shares Outstanding (in shares)									793,337	787,227	801,229
Basic and Diluted Earnings Per Common Share (in dollars per share)	$ 19.54	$ 18.66	$ 18.03	$ 17.80	$ 18.54	$ 17.45	$ 17.92	$ 17.27	$ 74.03	$ 71.18	$ 56.82

Employee Benefit Plans (Details

Employee Benefit Plans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Contributionshares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)
Executive Retirement Plan, Life Insurance Arrangements and Senior Management Retention Plan [Abstract]
Net gains on deferred compensation plan investments	$ 1,777	$ 2,625	$ 1,088
Tax-exempt interest earned on the life insurance policies	2,088	2,031	1,900
Executive Officers [Member]
Executive Retirement Plan, Life Insurance Arrangements and Senior Management Retention Plan [Abstract]
Employer contribution	6,800	6,600	6,200
Carrying value of liability	$ 56,700	$ 50,500
Common stock held as investments in Rabbi Trust of ERP (in shares) | shares	52,980	48,133
Common stock held as investments in Rabbi Trust of ERP, historical cost basis amount	$ 31,200	$ 29,100
Net gains on deferred compensation plan investments	1,800	2,600
Tax-exempt interest earned on the life insurance policies	2,100	2,000	1,900
Cash surrender value of life insurance policies	69,200	67,100
Senior Level Employees [Member] | Senior Management Retention Plan [Member]
Executive Retirement Plan, Life Insurance Arrangements and Senior Management Retention Plan [Abstract]
Employer contribution	2,300	1,300	1,500
Carrying value of liability	$ 8,600	$ 6,300
Common stock held as investments in Rabbi Trust of ERP (in shares) | shares	12,548	9,822
Common stock held as investments in Rabbi Trust of ERP, historical cost basis amount	$ 7,900	$ 5,800
Net gains on deferred compensation plan investments	$ 100	0
Profit Sharing Plan [Member]
Profit Sharing Plan [Abstract]
Minimum requisite service period	1 year
Number of annual employer contribution | Contribution	2
Employer discretionary contribution amount	$ 1,500	1,400	1,200
Employer mandatory contributions amount	$ 1,700	$ 1,600	$ 1,400
Annual vesting percentage, first year	0.00%
Annual vesting percentage, full year thereafter	25.00%
Benefit vesting period	5 years

Fair Value Measurements (Detail

Fair Value Measurements (Details)	12 Months Ended
	Dec. 31, 2020
Impaired Loans [Member]
Fair Value Measurements [Abstract]
Percentage of selling costs	10.00%
ORE [Member]
Fair Value Measurements [Abstract]
Percentage of selling costs	10.00%

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		$ 807,732	$ 507,386
Transfer into Level 3		0
Transfer out of Level 3		0
US Treasury Notes [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		15,288	54,995
US Government Agency SBA [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		8,160	10,798
Mortgage Backed Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale	[1]	737,873	441,078
Corporate Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		45,919
Other [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		492	515
Recurring [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		807,732	507,386
Recurring [Member] | US Treasury Notes [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		15,288	54,995
Recurring [Member] | US Government Agency SBA [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		8,160	10,798
Recurring [Member] | Mortgage Backed Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		737,873	441,078
Recurring [Member] | Corporate Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		45,919
Recurring [Member] | Other [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		492	515
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		15,470	55,200
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | US Treasury Notes [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		15,288	54,995
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | US Government Agency SBA [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Backed Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		182	205
Recurring [Member] | Other Observable Inputs (Level 2) [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		792,262	452,186
Recurring [Member] | Other Observable Inputs (Level 2) [Member] | US Treasury Notes [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Other Observable Inputs (Level 2) [Member] | US Government Agency SBA [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		8,160	10,798
Recurring [Member] | Other Observable Inputs (Level 2) [Member] | Mortgage Backed Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		737,873	441,078
Recurring [Member] | Other Observable Inputs (Level 2) [Member] | Corporate Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		45,919
Recurring [Member] | Other Observable Inputs (Level 2) [Member] | Other [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		310	310
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | US Treasury Notes [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | US Government Agency SBA [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Backed Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Corporate Securities [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other [Member]
Assets Measured at Fair Value on Recurring Basis by Fair Value Hierarchy [Abstract]
Investment Securities Available-for-Sale		$ 0	$ 0
[1]	All Mortgage Backed Securities were issued by an agency or government sponsored entity of the U.S. government.

Fair Value Measurements, Asse_2

Fair Value Measurements, Assets or Liabilities Measured at Fair Value on a Non-recurring Basis (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	$ 2,396	$ 5,751
Other Real Estate	873	873
Total Assets Measured at Fair Value On a Non-Recurring Basis	3,269	6,624
Commercial Real Estate [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans		2,588
Residential 1st Mortgages [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	1,584	1,403
Home Equity Lines and Loans [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	61	142
Agricultural [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	400	88
Commercial [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	213	1,391
Consumer [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	138	139
Real Estate Construction [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Other Real Estate	873	873
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Real Estate	0	0
Total Assets Measured at Fair Value On a Non-Recurring Basis	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Real Estate [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential 1st Mortgages [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Home Equity Lines and Loans [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Agricultural [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Consumer [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate Construction [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Other Real Estate	0	0
Other Observable Inputs (Level 2) [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Real Estate	0	0
Total Assets Measured at Fair Value On a Non-Recurring Basis	0	0
Other Observable Inputs (Level 2) [Member] | Commercial Real Estate [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans		0
Other Observable Inputs (Level 2) [Member] | Residential 1st Mortgages [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Observable Inputs (Level 2) [Member] | Home Equity Lines and Loans [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Observable Inputs (Level 2) [Member] | Agricultural [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Observable Inputs (Level 2) [Member] | Commercial [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Observable Inputs (Level 2) [Member] | Consumer [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	0	0
Other Observable Inputs (Level 2) [Member] | Real Estate Construction [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Other Real Estate	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	2,396	5,751
Other Real Estate	873	873
Total Assets Measured at Fair Value On a Non-Recurring Basis	3,269	6,624
Significant Unobservable Inputs (Level 3) [Member] | Commercial Real Estate [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans		2,588
Significant Unobservable Inputs (Level 3) [Member] | Residential 1st Mortgages [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	1,584	1,403
Significant Unobservable Inputs (Level 3) [Member] | Home Equity Lines and Loans [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	61	142
Significant Unobservable Inputs (Level 3) [Member] | Agricultural [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	400	88
Significant Unobservable Inputs (Level 3) [Member] | Commercial [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	213	1,391
Significant Unobservable Inputs (Level 3) [Member] | Consumer [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Impaired Loans	138	139
Significant Unobservable Inputs (Level 3) [Member] | Real Estate Construction [Member]
Fair Value on Non-recurring Basis by Fair Value Hierarchy [Abstract]
Other Real Estate	$ 873	$ 873

Fair Value Measurements, Quanti

Fair Value Measurements, Quantitative Information (Details) $ in Thousands	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Level 3 [Member] | Commercial Real Estate [Member] | Income Approach [Member] | Capitalization Rate [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input		0.033
Level 3 [Member] | Residential 1st Mortgages [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Minimum [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.0072	0.008
Level 3 [Member] | Residential 1st Mortgages [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Maximum [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.0413	0.064
Level 3 [Member] | Residential 1st Mortgages [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.0257	0.03
Level 3 [Member] | Home Equity Lines and Loans [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Minimum [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.011	0.01
Level 3 [Member] | Home Equity Lines and Loans [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Maximum [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.014	0.02
Level 3 [Member] | Home Equity Lines and Loans [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.0125	0.013
Level 3 [Member] | Agricultural [Member] | Income Approach [Member] | Capitalization Rate [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10
Level 3 [Member] | Agricultural [Member] | Income Approach [Member] | Capitalization Rate [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10	0.043
Level 3 [Member] | Commercial [Member] | Income Approach [Member] | Capitalization Rate [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10
Level 3 [Member] | Commercial [Member] | Income Approach [Member] | Capitalization Rate [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10	0.033
Level 3 [Member] | Consumer [Member] | Income Approach [Member] | Adjustment for Difference Between Comparable Sales [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10
Level 3 [Member] | Consumer [Member] | Income Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10
Level 3 [Member] | Consumer [Member] | Sales Comparison Approach [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input		0.406
Level 3 [Member] | Real Estate Construction [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member]
Quantitative Information [Abstract]
Impaired loans, measurement input	0.10
Level 3 [Member] | Real Estate Construction [Member] | Sales Comparison Approach [Member] | Adjustment for Difference Between Comparable Sales [Member] | Weighted Average [Member]
Quantitative Information [Abstract]
Other Real Estate Owned, Measurement Input	0.10	0.10
Nonrecurring [Member]
Quantitative Information [Abstract]
Impaired Loans	$ 2,396	$ 5,751
Other Real Estate	873	873
Nonrecurring [Member] | Commercial Real Estate [Member]
Quantitative Information [Abstract]
Impaired Loans		2,588
Nonrecurring [Member] | Residential 1st Mortgages [Member]
Quantitative Information [Abstract]
Impaired Loans	1,584	1,403
Nonrecurring [Member] | Home Equity Lines and Loans [Member]
Quantitative Information [Abstract]
Impaired Loans	61	142
Nonrecurring [Member] | Agricultural [Member]
Quantitative Information [Abstract]
Impaired Loans	400	88
Nonrecurring [Member] | Commercial [Member]
Quantitative Information [Abstract]
Impaired Loans	213	1,391
Nonrecurring [Member] | Consumer [Member]
Quantitative Information [Abstract]
Impaired Loans	138	139
Nonrecurring [Member] | Real Estate Construction [Member]
Quantitative Information [Abstract]
Other Real Estate	873	873
Nonrecurring [Member] | Level 3 [Member]
Quantitative Information [Abstract]
Impaired Loans	2,396	5,751
Other Real Estate	873	873
Nonrecurring [Member] | Level 3 [Member] | Commercial Real Estate [Member]
Quantitative Information [Abstract]
Impaired Loans		2,588
Nonrecurring [Member] | Level 3 [Member] | Residential 1st Mortgages [Member]
Quantitative Information [Abstract]
Impaired Loans	1,584	1,403
Nonrecurring [Member] | Level 3 [Member] | Home Equity Lines and Loans [Member]
Quantitative Information [Abstract]
Impaired Loans	61	142
Nonrecurring [Member] | Level 3 [Member] | Agricultural [Member]
Quantitative Information [Abstract]
Impaired Loans	400	88
Nonrecurring [Member] | Level 3 [Member] | Commercial [Member]
Quantitative Information [Abstract]
Impaired Loans	213	1,391
Nonrecurring [Member] | Level 3 [Member] | Consumer [Member]
Quantitative Information [Abstract]
Impaired Loans	138	139
Nonrecurring [Member] | Level 3 [Member] | Real Estate Construction [Member]
Quantitative Information [Abstract]
Other Real Estate	$ 873	$ 873

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets [Abstract]
Investment Securities Available-for-Sale	$ 807,732	$ 507,386
Carrying Amount [Member]
Assets [Abstract]
Cash and Cash Equivalents	383,837	294,758
Investment Securities Available-for-Sale	807,732	507,386
Investment Securities Held-to-Maturity	68,933	60,229
Loans & Leases, Net	3,040,730	2,618,015
Accrued Interest Receivable	20,333	16,733
Liabilities [Abstract]
Deposits	4,060,267	3,278,019
Subordinated Debentures	10,310	10,310
Accrued Interest Payable	1,383	2,795
Estimated Fair Value [Member]
Assets [Abstract]
Cash and Cash Equivalents	383,837	294,758
Investment Securities Available-for-Sale	807,732	507,386
Investment Securities Held-to-Maturity	70,049	61,097
Loans & Leases, Net	3,045,911	2,584,805
Accrued Interest Receivable	20,333	16,733
Liabilities [Abstract]
Deposits	4,061,240	3,277,269
Subordinated Debentures	6,888	7,325
Accrued Interest Payable	1,383	2,795
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Cash and Cash Equivalents	383,837	294,758
Investment Securities Available-for-Sale	15,470	55,200
Investment Securities Held-to-Maturity	0	0
Loans & Leases, Net	0	0
Accrued Interest Receivable	0	0
Liabilities [Abstract]
Deposits	3,638,400	2,760,097
Subordinated Debentures	0	0
Accrued Interest Payable	0	0
Estimated Fair Value [Member] | Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0
Investment Securities Available-for-Sale	792,262	452,186
Investment Securities Held-to-Maturity	26,262	31,253
Loans & Leases, Net	0	0
Accrued Interest Receivable	20,333	16,733
Liabilities [Abstract]
Deposits	0	0
Subordinated Debentures	6,888	7,325
Accrued Interest Payable	1,383	2,795
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Cash and Cash Equivalents	0	0
Investment Securities Available-for-Sale	0	0
Investment Securities Held-to-Maturity	43,787	29,844
Loans & Leases, Net	3,045,911	2,584,805
Accrued Interest Receivable	0	0
Liabilities [Abstract]
Deposits	422,840	517,172
Subordinated Debentures	0	0
Accrued Interest Payable	$ 0	$ 0

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Commitments to Extend Credit [Member]
Off Balance Sheet Commitments [Abstract]
Off-balance sheet risks, amount, liability	$ 1,040,844	$ 919,982
Letters of Credit [Member]
Off Balance Sheet Commitments [Abstract]
Off-balance sheet risks, amount, liability	$ 18,846	20,346
Letters of Credit [Member] | Minimum [Member]
Off Balance Sheet Commitments [Abstract]
Off balance sheet risks maturity period	1 month
Letters of Credit [Member] | Maximum [Member]
Off Balance Sheet Commitments [Abstract]
Off balance sheet risks maturity period	25 months
Performance Guarantees under Interest Rate Swap Contracts Entered into between our Borrowing Customers and Third Parties [Member]
Off Balance Sheet Commitments [Abstract]
Off-balance sheet risks, amount, liability	$ 2,786	$ 1,513

Leases (Details)

Leases (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)Lease	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Operating Leases [Abstract]
Operating lease ROU assets	$ 4,800,000	$ 4,800,000	$ 4,980,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:InterestReceivableAndOtherAssets	us-gaap:InterestReceivableAndOtherAssets	us-gaap:InterestReceivableAndOtherAssets
Operating lease liability	$ 4,918,000	$ 4,918,000	$ 5,030,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	fmcb:InterestPayableAndOtherLiabilities	fmcb:InterestPayableAndOtherLiabilities	fmcb:InterestPayableAndOtherLiabilities
Operating lease cost		$ 833,000	$ 836,000
Number of leases modified | Lease	1
Additional operating lease ROU assets resulting from modification of lease term and payment	$ 542,000	542,000
Additional operating lease liabilities resulting from modification of lease term and payment	$ 542,000	$ 542,000
Minimum [Member]
Operating Leases [Abstract]
Remaining lease term	1 year	1 year
Lease extension option term	5 years	5 years
Maximum [Member]
Operating Leases [Abstract]
Remaining lease term	10 years	10 years
Lease extension option term	10 years	10 years

Leases, Information Related to

Leases, Information Related to Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash Paid for Amounts Included in the Measurement of Lease Liabilities [Abstract]
Operating Cash Flow from Operating Leases	$ 795	$ 783
Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities	$ 0	$ 5,645
Weighted-Average Remaining Lease Term - Operating Leases	7 years 3 months 29 days	7 years 10 months 17 days
Weighted-Average Discount Rate - Operating Leases	2.90%	3.20%

Leases, Maturity of Remaining L

Leases, Maturity of Remaining Lease Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Maturity of Remaining Lease Liability [Abstract]
2021	$ 727
2022	695
2023	705
2024	721
2025	731
2026 and thereafter	1,907
Total Lease Payments	5,486
Less: Interest	(568)
Present Value of Lease Liabilities	$ 4,918	$ 5,030

Leases, Lessor - Direct Financi

Leases, Lessor - Direct Financing Leases (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Lessor - Direct Financing Leases [Abstract]
Net investment in direct financing leases	$ 103.5	$ 105.4
Minimum [Member]
Lessor - Direct Financing Leases [Abstract]
Term of direct financing leases	3 years
Maximum [Member]
Lessor - Direct Financing Leases [Abstract]
Term of direct financing leases	10 years

Parent Company Financial Info_3

Parent Company Financial Information, Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Balance Sheets [Abstract]
Investment Securities	$ 876,665	$ 567,615
Total Assets	4,550,453	3,721,830
Subordinated Debentures	10,310	10,310
Liabilities	4,126,788	3,352,534
Shareholders' Equity	423,665	369,296	$ 311,215	$ 299,660
Total Liabilities and Shareholders' Equity	4,550,453	3,721,830
Parent Company [Member]
Condensed Balance Sheets [Abstract]
Cash	4,551	1,341	$ 335	$ 332
Investment in Farmers & Merchants Bank of Central California	429,037	378,271
Investment Securities	434	411
Other Assets	832	102
Total Assets	434,854	380,125
Subordinated Debentures	10,310	10,310
Liabilities	879	519
Shareholders' Equity	423,665	369,296
Total Liabilities and Shareholders' Equity	$ 434,854	$ 380,125

Parent Company Financial Info_4

Parent Company Financial Information, Condensed Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Statements of Income [Abstract]
Interest Income	$ 40,621	$ 37,699	$ 35,415	$ 35,426	$ 35,654	$ 35,280	$ 35,373	$ 34,207	$ 149,161	$ 140,514	$ 125,503
Tax Benefit	(5,298)	(4,945)	(4,533)	(4,441)	(5,037)	(4,660)	(4,903)	(4,677)	(19,217)	(19,277)	(14,203)
Net Income	$ 15,493	$ 14,810	$ 14,309	$ 14,122	$ 14,644	$ 13,738	$ 14,105	$ 13,549	58,734	56,036	45,527
Parent Company [Member]
Condensed Statements of Income [Abstract]
Equity (Loss) in Undistributed Earnings in Farmers & Merchants Bank of Central California									40,597	44,571	(26,488)
Dividends from Subsidiary									19,874	13,166	73,010
Interest Income									11	17	16
Other Expenses, Net									(2,477)	(2,416)	(1,527)
Tax Benefit									729	698	516
Net Income									$ 58,734	$ 56,036	$ 45,527

Parent Company Financial Info_5

Parent Company Financial Information, Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows from Operating Activities [Abstract]
Net Income	$ 15,493	$ 14,810	$ 14,309	$ 14,122	$ 14,644	$ 13,738	$ 14,105	$ 13,549	$ 58,734	$ 56,036	$ 45,527
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities [Abstract]
Net Cash Provided by Operating Activities									58,119	80,858	57,774
Investing Activities [Abstract]
Net Cash Used in Investing Activities									(736,754)	(135,630)	(205,089)
Financing Activities [Abstract]
Stock Repurchased									(2,834)	0	(31,152)
Cash Dividends									(11,700)	(11,221)	(11,151)
Net Cash Provided by Financing Activities									767,714	203,966	105,730
Net Change in Cash and Cash Equivalents									89,079	149,194	(41,585)
Parent Company [Member]
Cash Flows from Operating Activities [Abstract]
Net Income									58,734	56,036	45,527
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities [Abstract]
(Equity) Loss in Undistributed Net Earnings from Subsidiary									(40,597)	(44,571)	26,488
Net (Increase) in Other Assets									(753)	(160)	(125)
Net Increase (Decrease) in Liabilities									360	222	(942)
Net Cash Provided by Operating Activities									17,744	11,527	70,948
Investing Activities [Abstract]
Payments for Business Acquisition									0	0	(28,642)
Payments for Investments in Non-Qualified Retirement Plan									(403)	(6,273)	(10,503)
Net Cash Used in Investing Activities									(403)	(6,273)	(39,145)
Financing Activities [Abstract]
Stock Repurchased									(2,834)	0	(31,152)
Issuance of Common Stock									403	6,973	10,503
Cash Dividends									(11,700)	(11,221)	(11,151)
Net Cash Provided by Financing Activities									(14,131)	(4,248)	(31,800)
Net Change in Cash and Cash Equivalents									3,210	1,006	3
Cash and Cash Equivalents at Beginning of Year				$ 1,341				$ 335	1,341	335	332
Cash and Cash Equivalents at End of Year	$ 4,551				$ 1,341				$ 4,551	$ 1,341	$ 335

Quarterly Unaudited Financial_3

Quarterly Unaudited Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Unaudited Financial Data [Abstract]
Total Interest Income	$ 42,203	$ 39,793	$ 37,967	$ 38,689	$ 39,099	$ 38,810	$ 38,626	$ 37,173	$ 158,652	$ 153,708	$ 133,453
Total Interest Expense	1,582	2,094	2,552	3,263	3,445	3,530	3,253	2,966	9,491	13,194	7,950
Net Interest Income	40,621	37,699	35,415	35,426	35,654	35,280	35,373	34,207	149,161	140,514	125,503
Provision for Credit Losses	2,500	1,700	300	0	0	0	200	0	4,500	200	5,533
Net Interest Income After Provision for Credit Losses	38,121	35,999	35,115	35,426	35,654	35,280	35,173	34,207	144,661	140,314	119,970
Total Non-Interest Income	4,716	4,539	3,514	2,927	4,403	3,974	4,400	4,464	15,696	17,241	15,219
Total Non-Interest Expense	22,046	20,783	19,787	19,790	20,376	20,856	20,565	20,445	82,406	82,242	75,459
Income Before Provision for Income Taxes	20,791	19,755	18,842	18,563	19,681	18,398	19,008	18,226	77,951	75,313	59,730
Provision for Income Taxes	5,298	4,945	4,533	4,441	5,037	4,660	4,903	4,677	19,217	19,277	14,203
Net Income	$ 15,493	$ 14,810	$ 14,309	$ 14,122	$ 14,644	$ 13,738	$ 14,105	$ 13,549	$ 58,734	$ 56,036	$ 45,527
Basic and Diluted Earnings Per Common Share (in dollars per share)	$ 19.54	$ 18.66	$ 18.03	$ 17.80	$ 18.54	$ 17.45	$ 17.92	$ 17.27	$ 74.03	$ 71.18	$ 56.82