Rhinebeck Bancorp (RBKB) 10-Q 10 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-38779
Entity Registrant Name	Rhinebeck Bancorp, Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	83-2117268
Entity Address, Address Line One	2 Jefferson Plaza
Entity Address, City or Town	Poughkeepsie
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	12601
City Area Code	845
Local Phone Number	454-8555
Title of 12(b) Security	Common Stock
Trading Symbol	RBKB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		11,296,770
Entity Central Index Key	0001751783
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 114,587	$ 93,485
Available for sale securities (at fair value)	240,389	102,933
Loans receivable (net of allowance for loan losses of $9,034 and $11,633, respectively)	833,841	873,813
Federal Home Loan Bank stock	1,417	2,787
Accrued interest receivable	3,743	3,819
Cash surrender value of life insurance	28,971	18,877
Deferred tax assets (net of valuation allowance of $1,694 and $1,760, respectively)	3,548	3,703
Premises and equipment, net	19,164	18,839
Other real estate owned	89	139
Goodwill	2,235	1,410
Intangible assets, net	460	199
Other assets	14,261	8,825
Total assets	1,262,705	1,128,829
Deposits
Non-interest bearing	316,521	244,344
Interest bearing	770,866	685,020
Total deposits	1,087,387	929,364
Mortgagors' escrow accounts	4,264	8,494
Advances from the Federal Home Loan Bank	20,145	50,674
Subordinated debt	5,155	5,155
Accrued expenses and other liabilities	21,550	18,643
Total liabilities	1,138,501	1,012,330
Stockholders' Equity
Preferred stock (par value $0.01 per share; 5,000,000 authorized, no shares issued)
Common stock (par value $0.01; authorized 25,000,000; issued and outstanding 11,296,770 at September 31, 2021 and 11,303,059 at December 31, 2020, respectively)	112	111
Additional paid-in capital	46,468	46,038
Unearned common stock held by the employee stock ownership plan ("ESOP")	(3,764)	(3,928)
Retained earnings	86,640	78,069
Accumulated other comprehensive loss:
Net unrealized (loss) gain on available for sale securities, net of taxes	(598)	993
Defined benefit pension plan, net of taxes	(4,654)	(4,784)
Total accumulated other comprehensive loss	(5,252)	(3,791)
Total stockholders' equity	124,204	116,499
Total liabilities and stockholders' equity	$ 1,262,705	$ 1,128,829

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for loan losses on loans receivable	$ 9,034	$ 11,633
Deferred tax valuation allowance	$ 1,694	$ 1,760
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, share authorized	5,000,000	5,000,000
Preferred Stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	25,000,000	25,000,000
Common Stock, shares issued	11,296,770	11,303,059
Common stock, shares outstanding	11,296,770	11,303,059

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest and Dividend Income
Interest and fees on loans	$ 10,402	$ 10,386	$ 30,722	$ 31,001
Interest and dividends on securities	623	476	1,560	1,790
Other income	34	12	66	36
Total interest and dividend income	11,059	10,874	32,348	32,827
Interest Expense
Interest expense on deposits	866	1,553	2,816	5,429
Interest expense on borrowings	134	293	562	1,072
Total interest expense	1,000	1,846	3,378	6,501
Net interest income	10,059	9,028	28,970	26,326
(Credit to) provision for loan losses	(954)	2,250	(2,171)	5,705
Net interest income after (credit to) provision for loan losses	11,013	6,778	31,141	20,621
Non-interest Income
Service charges on deposit accounts	664	558	1,891	1,705
Net realized loss on sales and calls of securities				(29)
Net gain on sales of loans	502	976	2,179	2,382
Increase in cash surrender value of life insurance	158	97	412	290
Net gain from sale of other real estate owned		42	2	42
Gain on disposal of premises and equipment		13	17	13
Gain on life insurance			195
Investment advisory income	237	380	812	942
Other	78	30	228	61
Total non-interest income	1,639	2,096	5,736	5,406
Non-interest Expense
Salaries and employee benefits	5,162	4,158	14,749	12,305
Occupancy	1,060	885	3,052	2,613
Data processing	450	325	1,269	1,040
Professional fees	439	380	1,375	1,055
Marketing	119	95	353	320
FDIC deposit insurance and other insurance	201	248	542	613
Other real estate owned expense	4	54	7	80
Amortization of intangible assets	27	11	69	32
Other	1,676	1,276	4,551	3,438
Total non-interest expense	9,138	7,432	25,967	21,496
Income before income taxes	3,514	1,442	10,910	4,531
Provision for income taxes	829	292	2,339	958
Net income	$ 2,685	$ 1,150	$ 8,571	$ 3,573
Earnings per common share:
Basic (in dollars per share)	$ 0.25	$ 0.10	$ 0.80	$ 0.33
Diluted (in dollars per share)	$ 0.25	$ 0.10	$ 0.79	$ 0.33
Weighted average shares outstanding, basic	10,774,038	10,732,321	10,755,342	10,726,867
Weighted average shares outstanding, diluted	10,946,935	10,732,321	10,914,429	10,726,867

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Income		$ 2,685	$ 1,150	$ 8,571	$ 3,573
Other Comprehensive (Loss) Income:
Unrealized holding (losses) gains arising during the period		(597)	(545)	(2,014)	2,006
Reclassification adjustment for losses included in net realized loss on sales and calls of securities on the consolidated statements of income					29
Net unrealized (losses) gains on available for sale securities		(597)	(545)	(2,014)	2,035
Tax effect	[1]	125	114	423	(429)
Unrealized (losses) gains on available for sale securities, net of tax		(472)	(431)	(1,591)	1,606
Defined benefit pension plan:
Actuarial (losses) gains arising during the period		(152)	806	(105)	(291)
Reclassification adjustment for amortization of net actuarial losses	[2]	90	71	269	214
Total		(62)	877	164	(77)
Tax effect	[3]	13	(184)	(34)	16
Defined benefit pension plan (losses) gains, net of tax		(49)	693	130	(61)
Other comprehensive (loss) income		(521)	262	(1,461)	1,545
Total Comprehensive Income		$ 2,164	$ 1,412	$ 7,110	$ 5,118
[1]	Includes $(6) for the nine months ended September 30, 2020, for tax effect of realized losses which are included in the provision for income taxes on the consolidated statements of income.
[2]	Included in other non-interest expense on the consolidated statements of income.
[3]	Includes $19 and $56 for the three and nine months ended September 30, 2021, respectively, and $15 and $45 for the three and nine months ended September 30, 2020, respectively, for tax effect of amortization of net actuarial loss included in the provision for income taxes on the consolidated statements of income.

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Available-for-sale Securities, gross realized losses	[1]	$ (125)	$ (114)	$ (423)	$ 429
Amortization of net actuarial loss	[2]	13	(184)	(34)	16
Related income tax expense
Available-for-sale Securities, gross realized losses					(6)
Amortization of net actuarial loss		$ 19	$ 15	$ 56	$ 45
[1]	Includes $(6) for the nine months ended September 30, 2020, for tax effect of realized losses which are included in the provision for income taxes on the consolidated statements of income.
[2]	Includes $19 and $56 for the three and nine months ended September 30, 2021, respectively, and $15 and $45 for the three and nine months ended September 30, 2020, respectively, for tax effect of amortization of net actuarial loss included in the provision for income taxes on the consolidated statements of income.

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Unallocated common stock held by the ESOP	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2019	$ 111	$ 45,869	$ (4,146)	$ 72,152	$ (4,104)	$ 109,882
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,075		1,075
Other comprehensive income (loss)					2,885	2,885
ESOP shares committed to be allocated			55			55
Balance at Mar. 31, 2020	111	45,869	(4,091)	73,227	(1,219)	113,897
Balance at Dec. 31, 2019	111	45,869	(4,146)	72,152	(4,104)	109,882
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income						3,573
Other comprehensive income (loss)						1,545
Balance at Sep. 30, 2020	111	45,895	(3,982)	75,725	(2,559)	115,190
Balance at Mar. 31, 2020	111	45,869	(4,091)	73,227	(1,219)	113,897
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,348		1,348
Other comprehensive income (loss)					(1,602)	(1,602)
ESOP shares committed to be allocated		(17)	54			37
Balance at Jun. 30, 2020	111	45,852	(4,037)	74,575	(2,821)	113,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,150		1,150
Other comprehensive income (loss)					262	262
ESOP shares committed to be allocated		(18)	55			37
Share-based compensation expense		61				61
Balance at Sep. 30, 2020	111	45,895	(3,982)	75,725	(2,559)	115,190
Balance at Dec. 31, 2020	111	46,038	(3,928)	78,069	(3,791)	116,499
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,321		3,321
Other comprehensive income (loss)					(1,169)	(1,169)
ESOP shares committed to be allocated		(3)	55			52
Share-based compensation expense		153				153
Balance at Mar. 31, 2021	111	46,188	(3,873)	81,390	(4,960)	118,856
Balance at Dec. 31, 2020	111	46,038	(3,928)	78,069	(3,791)	116,499
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income						8,571
Other comprehensive income (loss)						(1,461)
Balance at Sep. 30, 2021	112	46,468	(3,764)	86,640	(5,252)	124,204
Balance at Mar. 31, 2021	111	46,188	(3,873)	81,390	(4,960)	118,856
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				2,565		2,565
Other comprehensive income (loss)					229	229
ESOP shares committed to be allocated		3	54			57
Share-based compensation expense		155				155
Balance at Jun. 30, 2021	111	46,346	(3,819)	83,955	(4,731)	121,862
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				2,685		2,685
Other comprehensive income (loss)					(521)	(521)
ESOP shares committed to be allocated		4	55			59
Share-based compensation expense		156				156
Exercise of options		39				39
Share redemption for tax withholding on restricted stock vesting	1	(77)				(76)
Balance at Sep. 30, 2021	$ 112	$ 46,468	$ (3,764)	$ 86,640	$ (5,252)	$ 124,204

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash Flows from Operating Activities
Net income			$ 8,571	$ 3,573
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and accretion of premiums and discounts on investments, net			216	542
Net realized loss on sales and calls of securities				29
Net realized gain on sale of other real estate owned		$ (42)	(2)	(42)
(Credit to) provision for loan losses	$ (954)	2,250	(2,171)	5,705
Loans originated for sale			(56,534)	(65,974)
Proceeds from sale of loans			58,518	68,745
Net gain on sale of loans			(2,179)	(2,382)
Amortization of intangible assets	27	11	69	32	$ 42
Depreciation and amortization			1,111	1,014
Gain from disposal of premises and equipment		(13)	(17)	(13)
Deferred income tax expense (benefit)			543	(1,474)
Increase in cash surrender value of insurance			(412)	(290)
Decrease (increase) in accrued interest receivable			76	(994)
Expense of earned ESOP shares			168	129
Share-based compensation expense			464	61
Increase in other assets			(5,426)	(8,315)
Increase in accrued expenses and other liabilities			2,818	5,914
Net cash provided by operating activities			5,813	6,260
Cash Flows from Investing Activities
Proceeds from sales and calls of securities			2,000	6,997
Proceeds from maturities and principal repayments of securities			40,238	28,142
Purchases of securities			(181,924)	(25,210)
Net redemptions of FHLB Stock			1,370	460
Net decrease (increase) in loans			42,337	(104,977)
Purchases of bank owned life insurance			(10,023)	(41)
Purchases of bank premises and equipment			(1,305)	(1,548)
Net proceeds from life insurance			341
Net cash received from acquisition (Note 2)			32,767
Net increase of other real estate owned				(31)
Proceeds from sale of other real estate owned			50	2,221
Net cash used in investing activities			(74,149)	(93,987)
Cash Flows from Financing Activities
Net increase in demand deposits, NOW, money market and savings accounts			156,442	151,023
Net decrease in time deposits			(32,281)	(8,171)
Decrease in mortgagors' escrow accounts			(4,230)	(4,075)
Net decrease in short-term debt			(15,030)	(2,223)
Net decrease in long-term debt			(15,499)	(9,224)
Proceeds from exercise of stock options			36
Net cash provided by financing activities			89,438	127,330
Net increase in cash and due from banks			21,102	39,603
Cash and Due from Banks
Beginning balance			93,485	11,978	11,978
Ending balance	$ 114,587	$ 51,581	114,587	51,581	$ 93,485
Supplemental Disclosures of Cash Flow Information
Cash paid for interest			3,464	6,650
Cash (received) paid for income taxes			(40)	2,897
Noncash Investing Activities
Transfer of loans to other real estate owned				$ 1,858
Fair value of assets acquired			1,277
Fair value of liabilities assumed			$ 34,044

Nature of Business and Signific

Nature of Business and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Nature of Business and Significant Accounting Policies
Nature of Business and Significant Accounting Policies	1. Nature of Business and Significant Accounting Policies The financial statements include accounts of Rhinebeck Bancorp, Inc. (the “Company”), a stock holding company, and its wholly-owned subsidiary, Rhinebeck Bank (the “Bank”), a New York chartered stock savings bank. The primary purpose of the Company is to act as a holding company for the Bank. The Bank provides a full range of banking and financial services to consumer and commercial customers through its fifteen branches and two representative offices located in Dutchess, Ulster, Orange, and Albany counties. Financial services, including investment advisory and financial product sales, are offered through a division of the Bank doing business as Rhinebeck Asset Management (“RAM”). The unaudited consolidated financial statements reflect all adjustments, which in the opinion of management, are necessary for a fair presentation of the results of the interim periods and are of a normal and recurring nature. Operating results for the three or nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021 or for any other period. The unaudited financial statements and other financial information contained in this Quarterly Report on Form 10-Q should be read in conjunction with the audited financial statements, and related notes, of Rhinebeck Bancorp, Inc. at and for the year ended December 31, 2020 contained in the Company’s Annual Report on Form 10-K For more information regarding the Company’s significant accounting policies, see the Notes to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K Annual Report on Form 10-K Basis of Financial Statements Presentation The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and general practices within the banking industry. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities, as of the date of the consolidated statements of financial condition and reported amounts of revenues and expenses for the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, the valuation of securities, the evaluation of investment securities for other-than-temporary impairment, the evaluation of goodwill for impairment, the valuation of deferred tax assets and the determination of pension obligations. Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. All significant intercompany accounts and transactions have been eliminated in consolidation. On March 12, 2021, the Bank completed a branch purchase and assumption transaction with ConnectOne Bank. Management concluded that the acquisition represented a business combination, which is accounted for using the acquisition method, with the results of operations included in the Company’s consolidated financial statements as of the acquisition date. For additional information, see Note 2. Reclassifications Certain amounts in the prior year consolidated financial statements have been reclassified to conform to the current year’s presentation. COVID-19 Significant progress has been made to combat the outbreak of COVID-19; however, the global pandemic has adversely impacted a broad range of industries in which the Company's customers operate and could still impair their ability to fulfill their financial obligations to the Company. The Company’s business is dependent upon the willingness and ability of its employees and customers to conduct banking and other financial transactions. If there is a resurgence in the virus or variant strains of the virus increase, the Company could experience further adverse effects on its business, financial condition, results of operations and cash flows. It is not possible to know the full extent of the impact of COVID-19 and the effects it will have on the Company's future operations. Impact of Recent Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13 on “Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU requires credit losses on most financial assets be measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (“CECL”) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The measurement of expected credit losses is based upon relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of the reported amount. On October 16, 2019, the FASB approved a delay for conversion to the CECL methodology to January 2023 for smaller reporting companies, other public business entities, private companies and non-profits. The Company is currently assessing the effect of ASU No. 2016-13 and has engaged with a software vendor to assist in its efforts. Emerging Growth Company Status As an emerging growth company, the Company may delay adoption of new or revised financial accounting standards until such date that the standards are required to be adopted by non-issuer companies. If such standards would not apply to non-issuer companies, no deferral would be applicable. The Company is taking advantage of the benefits of the extended transition periods allowed under the Jumpstart Our Business Startups Act. Accordingly, the Company’s consolidated financial statements may not be comparable to those of public companies that adopt new or revised financial accounting standards as of an earlier date. The effective dates of the recent accounting standards reflect those that relate to non-issuer companies. ​

Acquisition

Acquisition	9 Months Ended
	Sep. 30, 2021
Acquisition
Acquisition	2. Acquisition On October 26, 2020, the Bank entered into a branch purchase and assumption agreement with ConnectOne Bank, the wholly-owned subsidiary of ConnectOne Bancorp, Inc., to acquire two branches located in Orange County, New York, as well as certain deposits and other assets and liabilities. The transaction closed on March 12, 2021 with the transfer of $33,863 of deposits. Management concluded that the acquisition represented a business combination, which is accounted for using the acquisition method, with the results of operations included in the Company’s consolidated financial statements as of the acquisition date. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed in the March 12, 2021 transaction with ConnectOne, and reflects all adjustments made to the fair value of the opening balance sheet through September 30, 2021: ​ ​ ​ ​ ​ ​ ​ March 12, Fair value of consideration transferred, assets acquired and liabilities assumed ​ 2021 Total cash received on acquisition ​ $ 32,767 ​ ​ ​ ​ Assets acquired ​ ​ ​ Fixed assets ​ ​ 113 Reimbursed expenses ​ ​ 9 Core deposit intangible (1) ​ ​ 330 Total assets acquired ​ ​ 452 ​ ​ ​ ​ Liabilities assumed ​ ​ ​ Deposits ​ ​ 33,863 Mark-to-market adjustment ​ ​ 181 Total liabilities assumed ​ ​ 34,044 Net liabilities acquired ​ ​ (33,592) Goodwill recognized ​ $ 825 _____________________________ (1) The core deposit intangible was determined to have an estimated life of approximately 13 years . The Company incurred $71 in expenses related to the acquisition during the nine months ended September 30, 2021. Acquisition expenses, including professional fees, are included in the total non-interest expense line item in the condensed consolidated statement of income.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2021
Investment Securities
Investment Securities	3. Investment Securities The amortized cost, gross unrealized gains and losses and fair values of available for sale securities are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ ​ ​ Amortized Cost Gains Losses Fair Value U.S. Treasury securities ​ $ 40,397 ​ $ 1 ​ $ (209) ​ $ 40,189 U.S. government agency mortgage-backed securities–residential ​ ​ 157,595 ​ ​ 706 ​ ​ (1,404) ​ ​ 156,897 U.S. government agency securities ​ 26,810 ​ 107 ​ (39) ​ 26,878 Municipal securities (1) ​ 7,005 ​ 32 ​ (27) ​ 7,010 Corporate bonds ​ 8,700 ​ 107 ​ (32) ​ 8,775 Other ​ 640 ​ — ​ — ​ 640 Total ​ $ 241,147 ​ $ 953 ​ $ (1,711) ​ $ 240,389 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ ​ ​ Amortized Cost Gains Losses Fair Value U.S. government agency mortgage-backed securities–residential ​ $ 88,197 ​ $ 1,350 ​ $ (277) ​ $ 89,270 U.S. government agency securities ​ ​ 7,013 ​ 148 ​ — ​ 7,161 Municipal securities (1) ​ 1,445 ​ 31 ​ — ​ 1,476 Corporate bonds ​ ​ 4,400 ​ 49 ​ (3) ​ 4,446 Other ​ ​ 621 ​ — ​ (41) ​ 580 Total ​ $ 101,676 ​ $ 1,578 ​ $ (321) ​ $ 102,933 (1) The issuers of municipal securities are all within New York State. The following table presents the fair value and unrealized losses of the Company’s available for sale securities with gross unrealized losses aggregated by the length of time the individual securities have been in a continuous unrealized loss position: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Less Than 12 Months ​ 12 Months or Longer ​ Total ​ ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities ​ $ 30,169 ​ $ (209) ​ $ — ​ $ — ​ $ 30,169 ​ $ (209) U.S. government agency mortgage-backed securities-residential ​ ​ 103,868 ​ ​ (1,186) ​ ​ 11,974 ​ ​ (218) ​ ​ 115,842 ​ ​ (1,404) U.S. government agency securities ​ ​ 14,719 ​ ​ (39) ​ ​ — ​ ​ — ​ ​ 14,719 ​ ​ (39) Municipal Securities ​ ​ 2,339 ​ ​ (27) ​ ​ — ​ ​ — ​ ​ 2,339 ​ ​ (27) Corporate Bonds ​ ​ 3,474 ​ ​ (26) ​ ​ 244 ​ ​ (6) ​ ​ 3,718 ​ ​ (32) Total ​ $ 154,569 ​ $ (1,487) ​ $ 12,218 ​ $ (224) ​ $ 166,787 ​ $ (1,711) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Less Than 12 Months ​ 12 Months or Longer ​ Total ​ ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. government agency mortgage-backed securities-residential ​ $ 30,243 ​ $ (269) ​ $ 293 ​ $ (8) ​ $ 30,536 ​ $ (277) Corporate Bonds ​ ​ 747 ​ ​ (3) ​ ​ — ​ ​ — ​ ​ 747 ​ ​ (3) Other ​ ​ 522 ​ ​ (41) ​ ​ — ​ ​ — ​ ​ 522 ​ ​ (41) Total ​ $ 31,512 ​ $ (313) ​ $ 293 ​ $ (8) ​ $ 31,805 ​ $ (321) ​ At September 30, 2021, the Company had 119 individual available-for-sale securities in an unrealized loss position with unrealized losses totaling $1,711 with an aggregate depreciation of 1.03% from the Company’s amortized cost. ​ Management believes that none of the unrealized losses on available for sale securities are other-than-temporary because substantially all of the unrealized losses in the Company’s investment portfolio relate to market interest rate changes on debt and mortgage-backed securities issued either directly by the government or from government sponsored enterprises. The Company does not intend to sell the securities and it is not likely that the Company will be required to sell the securities before recovery of their amortized cost basis, which may be maturity; therefore, the Company did not consider those investments to be other-than-temporarily impaired at September 30, 2021. The amortized cost and fair value of available for sale debt securities at September 30, 2021 and December 31, 2020, by contractual maturities, are presented below. Actual maturities of mortgage-backed securities may differ from contractual maturities because the mortgages underlying the securities may be called or repaid without any penalties. Because mortgage-backed securities are not due at a single maturity date, they are not included in the maturity categories in the following maturity summary: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ December 31, 2020 ​ Amortized Cost Fair Value Amortized Cost Fair Value Maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Within 1 year ​ $ 12,916 ​ $ 12,915 ​ $ 102 ​ $ 102 After 1 but within 5 years ​ 48,948 ​ 48,832 ​ 2,155 ​ 2,155 After 5 but within 10 years ​ 20,903 ​ 20,961 ​ 9,946 ​ 10,162 After 10 years ​ 145 ​ 145 ​ 655 ​ 664 Total Maturities ​ 82,912 ​ 82,853 ​ 12,858 ​ 13,083 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mortgage-backed securities ​ 157,595 ​ 156,896 ​ 88,197 ​ 89,270 Other ​ 640 ​ 640 ​ 621 ​ 580 Total ​ $ 241,147 ​ $ 240,389 ​ $ 101,676 ​ $ 102,933 ​ At September 30, 2021 and December 31, 2020, available for sale securities with a carrying value of $11,679 and $18,123, respectively, were pledged to secure Federal Home Loan Bank of New York (“FHLB”) borrowings. In addition, at September 30, 2021 and December 31, 2020, $1,053 and $1,059 of available for sale securities were pledged to secure borrowings at the Federal Reserve Bank of New York (“FRB”), respectively. During the nine months ended September 30, 2021, there was $2,000 in proceeds from the call of available for sale securities with no gross gains or losses

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2021
Loans and Allowance for Loan Losses
Loans and Allowance for Loan Losses	4. Loans and Allowance for Loan Losses A summary of the Company’s loan portfolio is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Commercial real estate loans: ​ ​ Construction ​ $ 5,682 ​ $ 5,392 ​ Non-residential ​ 236,240 ​ 248,349 ​ Multi-family ​ 41,233 ​ 30,379 ​ Residential real estate loans ​ 35,830 ​ 39,239 ​ Commercial and industrial loans (1) ​ 117,755 ​ 154,016 ​ Consumer loans: ​ ​ ​ Indirect automobile ​ 377,116 ​ 376,260 ​ Home equity ​ 12,253 ​ 14,165 ​ Other consumer ​ 8,240 ​ 8,816 ​ Total gross loans ​ 834,349 ​ 876,616 ​ Net deferred loan costs ​ 8,526 ​ 8,830 ​ Allowance for loan losses ​ (9,034) ​ (11,633) ​ Total net loans ​ $ 833,841 ​ $ 873,813 ​ (1) Includes $44,080 and $75,366 in U.S. Small Business Administration (“SBA”), paycheck protection program (“PPP”) loans at September 30, 2021 and December 31, 2020, respectively. At September 30, 2021 and December 31, 2020, the unpaid principal balances of loans held for sale, included in the residential real estate category above, were $2,912 and $2,718, respectively. The following tables present the classes of the loan portfolio summarized by the pass category and the criticized and classified categories of special mention and substandard within the internal risk system: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ Pass Special Mention Substandard Total Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,682 ​ $ — ​ $ — ​ $ 5,682 Non-residential ​ ​ 228,816 ​ ​ 5,189 ​ ​ 2,235 ​ ​ 236,240 Multifamily ​ 41,233 ​ — ​ — ​ 41,233 Residential real estate ​ 33,347 ​ — ​ 2,483 ​ 35,830 Commercial and industrial ​ 111,685 ​ 5,047 ​ 1,023 ​ 117,755 Consumer: ​ ​ ​ ​ ​ Indirect automobile ​ 376,639 ​ — ​ 477 ​ 377,116 Home equity ​ 12,029 ​ — ​ 224 ​ 12,253 Other consumer ​ 8,193 ​ — ​ 47 ​ 8,240 Total ​ $ 817,624 ​ $ 10,236 ​ $ 6,489 ​ $ 834,349 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ Pass Special Mention Substandard Total Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,392 ​ $ — ​ $ — ​ $ 5,392 Non-residential ​ ​ 240,778 ​ ​ 5,468 ​ ​ 2,103 ​ ​ 248,349 Multifamily ​ 30,379 ​ — ​ — ​ 30,379 Residential real estate ​ 36,597 ​ — ​ 2,642 ​ 39,239 Commercial and industrial ​ 147,748 ​ 5,395 ​ 873 ​ 154,016 Consumer: ​ ​ ​ ​ Indirect automobile ​ 375,270 ​ — ​ 990 ​ 376,260 Home equity ​ 13,819 ​ — ​ 346 ​ 14,165 Other consumer ​ 8,768 ​ — ​ 48 ​ 8,816 Total ​ $ 858,751 ​ $ 10,863 ​ $ 7,002 ​ $ 876,616 ​ Management further monitors the performance and credit quality of the loan portfolio by analyzing the age of the portfolio as determined by the length of time a recorded payment is past due. The past due status of all classes of loans is determined based on contractual due dates for loan payments. The following tables present the classes of the loan portfolio summarized by the aging categories of performing loans and non-accrual loans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ 30-59 Days ​ 60-89 Days ​ 90 Days Past ​ Total Loans ​ ​ ​ Current Past Due Past Due Due Receivable Non-accrual Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,682 ​ $ — ​ $ — ​ $ — ​ $ 5,682 ​ $ — Non-residential ​ ​ 232,909 ​ ​ — ​ ​ 1,243 ​ ​ 2,088 ​ ​ 236,240 ​ ​ 2,088 Multifamily ​ ​ 41,233 ​ ​ — ​ ​ — ​ ​ — ​ ​ 41,233 ​ ​ — Residential real estate ​ 34,561 ​ 58 ​ — ​ 1,211 ​ 35,830 ​ 2,483 Commercial and industrial ​ 116,418 ​ 409 ​ 186 ​ 742 ​ 117,755 ​ 884 Consumer: ​ ​ ​ ​ ​ ​ ​ ​ Indirect automobile ​ 371,303 ​ 4,576 ​ ​ 790 ​ 447 ​ 377,116 ​ 477 Home equity ​ 11,868 ​ 214 ​ 45 ​ 126 ​ 12,253 ​ 224 Other consumer ​ 8,051 ​ 107 ​ 35 ​ 47 ​ 8,240 ​ 47 Total ​ $ 822,025 ​ $ 5,364 ​ $ 2,299 ​ $ 4,661 ​ $ 834,349 ​ $ 6,203 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ 30-59 Days ​ 60-89 Days ​ 90 Days Past ​ Total Loans ​ ​ ​ Current Past Due Past Due Due Receivable Non-accrual Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,392 ​ $ — ​ $ — ​ $ — ​ $ 5,392 ​ $ — Non-residential ​ ​ 244,387 ​ ​ 1,985 ​ ​ 33 ​ ​ 1,944 ​ ​ 248,349 ​ ​ 1,944 Multifamily ​ ​ 30,379 ​ ​ — ​ ​ — ​ ​ — ​ ​ 30,379 ​ ​ — Residential real estate ​ 36,581 ​ 1,351 ​ 138 ​ 1,169 ​ 39,239 ​ 2,641 Commercial and industrial ​ 151,771 ​ 1,551 ​ 511 ​ 183 ​ 154,016 ​ 366 Consumer: ​ ​ ​ ​ ​ ​ ​ ​ Indirect automobile ​ 367,929 ​ 6,321 ​ 1,063 ​ 947 ​ 376,260 ​ 990 Home equity ​ 13,506 ​ 310 ​ 101 ​ 248 ​ 14,165 ​ 346 Other consumer ​ 8,663 ​ 98 ​ 7 ​ 48 ​ 8,816 ​ 48 Total ​ $ 858,608 ​ $ 11,616 ​ $ 1,853 ​ $ 4,539 ​ $ 876,616 ​ $ 6,335 ​ The following tables summarize information regarding impaired loans by loan portfolio class: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Recorded ​ Unpaid Principal ​ Related ​ Average Recorded ​ Investment Balance Allowance Investment With no related allowance recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Non-residential ​ $ 2,088 ​ $ 3,148 ​ $ — ​ $ 2,096 Multifamily ​ — ​ — ​ — ​ — Residential real estate ​ 2,483 ​ 3,025 ​ — ​ 2,561 Commercial and industrial ​ 884 ​ 1,156 ​ — ​ 589 Consumer: ​ ​ ​ ​ ​ ​ Indirect automobile ​ 197 ​ 257 ​ — ​ 232 Home equity ​ 224 ​ 225 ​ — ​ 357 Other consumer ​ 47 ​ 48 ​ — ​ 38 Total ​ $ 5,923 ​ $ 7,859 ​ $ — ​ $ 5,873 With an allowance recorded: ​ ​ ​ ​ Commercial and industrial ​ $ — ​ $ — ​ $ — ​ $ 153 Consumer: ​ ​ ​ ​ ​ ​ Indirect automobile ​ ​ 280 ​ ​ 287 ​ ​ 68 ​ ​ 337 Other consumer ​ — ​ — ​ — ​ 12 Total ​ $ 280 ​ $ 287 ​ $ 68 ​ $ 502 Total: ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ Non-residential ​ $ 2,088 ​ $ 3,148 ​ $ — ​ $ 2,096 Multifamily ​ — ​ — ​ — ​ — Residential real estate ​ 2,483 ​ 3,025 ​ — ​ 2,561 Commercial and industrial ​ 884 ​ 1,156 ​ — ​ 742 Consumer: ​ ​ ​ ​ Indirect automobile ​ 477 ​ 544 ​ 68 ​ 569 Home equity ​ 224 ​ 225 ​ — ​ 357 Other consumer ​ 47 ​ 48 ​ — ​ 50 Total ​ $ 6,203 ​ $ 8,146 ​ $ 68 ​ $ 6,375 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Recorded ​ Unpaid Principal ​ Related ​ Average Recorded ​ Investment Balance Allowance Investment With no related allowance recorded: ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Non-residential ​ $ 1,944 ​ $ 2,973 ​ $ — ​ $ 3,086 Multifamily ​ — ​ — ​ — ​ 184 Residential real estate ​ 2,641 ​ 3,086 ​ — ​ 2,554 Commercial and industrial ​ 345 ​ 586 ​ — ​ 426 Consumer: ​ ​ ​ ​ ​ ​ Indirect automobile ​ 397 ​ 467 ​ — ​ 293 Home equity ​ 346 ​ 351 ​ — ​ 449 Other consumer ​ — ​ — ​ — ​ 21 Total ​ $ 5,673 ​ $ 7,463 ​ $ — ​ $ 7,013 With an allowance recorded: ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ Commercial and industrial ​ $ 21 ​ $ 21 ​ $ 11 ​ $ 30 Consumer: ​ ​ ​ ​ ​ Indirect automobile ​ ​ 593 ​ ​ 613 ​ ​ 135 ​ ​ 591 Other consumer ​ 48 ​ 49 ​ 7 ​ 13 Total ​ $ 662 ​ $ 683 ​ $ 153 ​ $ 634 Total: ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ Non-residential ​ $ 1,944 ​ $ 2,973 ​ $ — ​ $ 3,086 Multifamily ​ — ​ — ​ — ​ 184 Residential real estate ​ 2,641 ​ 3,086 ​ — ​ 2,554 Commercial and industrial ​ 366 ​ 607 ​ 11 ​ 456 Consumer: ​ ​ ​ ​ Indirect automobile ​ 990 ​ 1,080 ​ 135 ​ 884 Home equity ​ 346 ​ 351 ​ — ​ 449 Other consumer ​ 48 ​ 49 ​ 7 ​ 34 Total ​ $ 6,335 ​ $ 8,146 ​ $ 153 ​ $ 7,647 ​ A loan is considered impaired when based on current information and events it is probable that the Company will be unable to collect all amounts due from the borrower in accordance with the contractual terms of the loan. Impaired loans include nonperforming loans and loans modified as troubled debt restructurings (“TDRs”). Loan modifications, which resulted in these loans being considered TDRs, are primarily in the form of rate concessions and extensions of maturity dates that are made specifically due to hardships experienced by the customer. The Company does not generally recognize interest income on a loan in an impaired status. At September 30, 2021 and December 31, 2020, three loans totaling $1,468 and $1,571, included in impaired loans, were identified as TDRs. There were no new TDRs in 2020 or the first nine months of 2021. At September 30, 2021 and December 31, 2020, all TDR loans were performing in accordance with their restructured terms. At September 30, 2021 and December 31, 2020, the Company had no commitments to advance additional funds to borrowers under TDR loans. The Company has transferred a portion of its originated commercial real estate loans to participating lenders. The amounts transferred have been accounted for as sales and are therefore not included in the Company’s accompanying statements of financial condition. The Company and participating lenders share ratably in any gains or losses that may result from a borrower’s lack of compliance with contractual terms of the loan. The Company continues to service the loans on behalf of the participating lenders and, as such, collects cash payments from the borrowers, remits payments to participating lenders and disburses required escrow funds to relevant parties. At September 30, 2021 and December 31, 2020, the Company was servicing loans for participants aggregating $4,050 and $4,291, respectively. Residential mortgage and consumer loans secured by residential real estate properties for which formal foreclosure proceedings are in process totaled $946 and $636 at September 30, 2021 and December 31, 2020, respectively. The Company services certain loans that it has sold without recourse to third parties. The aggregate balances of loans serviced for others were $313,037 and $300,700 as of September 30, 2021 and December 31, 2020, respectively. The balances of capitalized servicing rights, included in other assets at September 30, 2021 and December 31, 2020, were $2,639 and $2,390, respectively. Fair value exceeds carrying value, and thus, no impairment charges related to servicing rights were recognized during the period ended September 30, 2021 or the year ended December 31, 2020. The following tables summarize the segments of the loan portfolio and the allowance for loan losses, segregated into the amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment and the activity in the allowance for loan losses for the periods then ended: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Commercial ​ ​ ​ ​ Real Estate Residential and Industrial Indirect Consumer Totals ​ Three months ended September 30, 2021 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 4,833 ​ $ 120 ​ $ 759 ​ $ 4,071 ​ $ 343 ​ $ 10,126 Provision for (credit to) loan losses ​ ​ (792) ​ ​ (67) ​ ​ 491 ​ ​ (294) ​ ​ (292) ​ ​ (954) Loans charged-off ​ ​ — ​ ​ — ​ ​ (12) ​ ​ (527) ​ ​ (5) ​ ​ (544) Recoveries ​ — ​ — ​ 1 ​ 390 ​ 15 ​ 406 Ending balance ​ $ 4,041 ​ $ 53 ​ $ 1,239 ​ $ 3,640 ​ $ 61 ​ $ 9,034 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial ​ Indirect ​ Consumer Totals ​ ​ Three months ended September 30, 2020 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,673 ​ $ 125 ​ $ 859 ​ $ 4,779 ​ $ 136 ​ $ 8,572 Provision for loan losses ​ ​ 1,217 ​ ​ 4 ​ ​ 366 ​ ​ 653 ​ ​ 10 ​ ​ 2,250 Loans charged-off ​ ​ — ​ ​ — ​ ​ (88) ​ ​ (499) ​ ​ (3) ​ ​ (590) Recoveries ​ 4 ​ — ​ (3) ​ 325 ​ 5 ​ 331 Ending balance ​ $ 3,894 ​ $ 129 ​ $ 1,134 ​ $ 5,258 ​ $ 148 ​ $ 10,563 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial Indirect Consumer Totals ​ ​ Nine months ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 5,354 ​ $ 117 ​ $ 1,050 ​ $ 4,974 ​ $ 138 ​ $ 11,633 (Credit to) provision for loan losses ​ ​ (1,313) ​ ​ (67) ​ ​ 113 ​ ​ (803) ​ ​ (101) ​ ​ (2,171) Loans charged-off ​ ​ — ​ ​ — ​ ​ (13) ​ ​ (1,644) ​ ​ (14) ​ ​ (1,671) Recoveries ​ — ​ 3 ​ 89 ​ 1,113 ​ 38 ​ 1,243 Ending balance ​ $ 4,041 ​ $ 53 ​ $ 1,239 ​ $ 3,640 ​ $ 61 ​ $ 9,034 Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ — ​ $ — ​ $ — ​ $ 68 ​ $ — ​ $ 68 Loans not deemed impaired ​ $ 4,041 ​ $ 53 ​ $ 1,239 ​ $ 3,572 ​ $ 61 ​ $ 8,966 Loan receivables: ​ ​ ​ ​ ​ ​ Ending balance ​ $ 283,155 ​ $ 35,830 ​ $ 117,755 ​ $ 377,116 ​ $ 20,493 ​ $ 834,349 Ending balance: ​ ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ 2,088 ​ $ 2,483 ​ $ 884 ​ $ 477 ​ $ 271 ​ $ 6,203 Loans not deemed impaired ​ $ 281,067 ​ $ 33,347 ​ $ 116,871 ​ $ 376,639 ​ $ 20,222 ​ $ 828,146 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial ​ Indirect ​ Consumer Totals ​ ​ Nine months ended September 30, 2020 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,009 ​ $ 99 ​ $ 603 ​ $ 3,117 ​ $ 126 ​ $ 5,954 Provision for loan losses ​ ​ 1,881 ​ ​ 30 ​ ​ 651 ​ ​ 3,114 ​ ​ 29 ​ ​ 5,705 Loans charged-off ​ ​ — ​ ​ — ​ ​ (127) ​ ​ (1,688) ​ ​ (21) ​ ​ (1,836) Recoveries ​ 4 ​ — ​ 7 ​ 715 ​ 14 ​ 740 Ending balance ​ $ 3,894 ​ $ 129 ​ $ 1,134 ​ $ 5,258 ​ $ 148 ​ $ 10,563 Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ — ​ $ — ​ $ 24 ​ $ 204 ​ $ 2 ​ $ 230 Loans not deemed impaired ​ $ 3,894 ​ $ 129 ​ $ 1,110 ​ $ 5,054 ​ $ 146 ​ $ 10,333 Loan receivables: ​ ​ ​ ​ ​ ​ Ending balance ​ $ 284,862 ​ $ 40,605 ​ $ 170,663 ​ $ 372,863 ​ $ 24,147 ​ $ 893,140 Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ 1,291 ​ $ 2,684 ​ $ 422 ​ $ 900 ​ $ 561 ​ $ 5,858 Loans not deemed impaired ​ $ 283,571 ​ $ 37,921 ​ $ 170,241 ​ $ 371,963 ​ $ 23,586 ​ $ 887,282 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial Indirect Consumer Totals ​ ​ December 31, 2020 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ — ​ $ — ​ $ 11 ​ $ 135 ​ $ 7 ​ $ 153 Loans not deemed impaired ​ $ 5,354 ​ $ 117 ​ $ 1,039 ​ $ 4,839 ​ $ 131 ​ $ 11,480 Loan receivables: ​ ​ ​ ​ ​ ​ Ending balance ​ $ 284,120 ​ $ 39,239 ​ $ 154,016 ​ $ 376,260 ​ $ 22,981 ​ $ 876,616 Ending balance: ​ ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ 1,944 ​ $ 2,641 ​ $ 366 ​ $ 990 ​ $ 394 ​ $ 6,335 Loans not deemed impaired ​ $ 282,176 ​ $ 36,598 ​ $ 153,650 ​ $ 375,270 ​ $ 22,587 ​ $ 870,281 ​ In the normal course of business, the Company grants loans to officers, directors and other related parties. Balances and activity of such loans during the periods presented were not material.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets
Goodwill and Intangible Assets	5. Goodwill and Intangible Assets The changes in the carrying value of goodwill are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months ​ Year Ended ​ ​ ​ Ended September 30, ​ December 31, ​ 2021 2020 Beginning balance ​ ​ $ 1,410 ​ $ 1,410 Acquisition activity ​ ​ 825 ​ — ​ ​ ​ ​ Ending balance ​ ​ $ 2,235 ​ $ 1,410 ​ ​ ​ ​ Accumulated impairment ​ ​ $ 1,116 ​ $ 1,116 ​ The Company evaluated goodwill and determined that no write-down was required for the first nine months of 2021 or the year ended December 31, 2020. The changes in the carrying value of the customer list and core deposit intangibles are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months ​ Year Ended ​ ​ Ended September 30, ​ December 31, ​ 2021 2020 Beginning balance ​ $ 199 ​ $ 241 Acquisition activity ​ ​ 330 ​ ​ — Amortization ​ (69) ​ (42) ​ ​ ​ Ending balance ​ $ 460 ​ $ 199 Accumulated amortization and impairment ​ $ 817 ​ $ 748 ​ Core deposit intangibles represent the estimated fair value of acquired customer deposit relationships on the date of acquisition and are amortized over their estimated useful lives. The values assigned to customer lists or core deposit intangibles is based upon the application of the income approach. The intangibles are expected to have useful lives of approximately 13 years. The Company recognized $69 and $32 of amortization expense related to its intangible assets for the nine months ended September 30, 2021 and 2020, respectively. The Company recognized $27 and $11 of amortization expense for the three months ended September 30, 2021 and 2020, respectively. At September 30, 2021, based upon a review of the intangibles, the Company determined that the fair value of the amortizable intangible assets exceeded their carrying values. As of September 30, 2021, the future amortization expense for amortizable intangible assets for the respective years is as follows: ​ ​ ​ ​ ​ 2021 $ 26 2022 ​ 99 2023 ​ 88 2024 ​ 80 2025 ​ 61 Thereafter ​ ​ 106 Total ​ $ 460 ​

Premises and Equipment

Premises and Equipment	9 Months Ended
	Sep. 30, 2021
Premises and Equipment
Premises and Equipment	6. Premises and Equipment Premises and equipment are summarized as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Land ​ $ 3,732 ​ $ 3,732 ​ Buildings and improvements ​ 26,651 ​ 26,431 ​ Furniture, fixtures and equipment ​ 13,762 ​ 13,042 ​ Construction in process ​ 589 ​ 93 ​ Total ​ 44,734 ​ 43,298 ​ Less accumulated depreciation ​ (25,570) ​ (24,459) ​ Net ​ $ 19,164 ​ $ 18,839 ​ ​

Deposits

Deposits	9 Months Ended
	Sep. 30, 2021
Deposits
Deposits	7. Deposits Deposits balances are summarized as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Non-interest bearing demand deposits ​ $ 316,521 ​ $ 244,344 Interest bearing accounts: ​ ​ NOW ​ 156,330 ​ 141,580 Savings ​ 178,913 ​ 157,414 Money market ​ 267,261 ​ 185,383 Time certificates of deposit ​ 168,362 ​ 200,643 Total interest bearing accounts ​ 770,866 ​ 685,020 Total deposits ​ $ 1,087,387 ​ $ 929,364 ​ Included in time certificates of deposit at September 30, 2021 and December 31, 2020 were reciprocal deposits totaling $19,568 and $30,012, respectively, with original maturities of one Contractual maturities of time certificates of deposit at September 30, 2021 are summarized below: ​ ​ ​ ​ ​ ​ ​ September 30, ​ 2021 Within 1 year ​ $ 137,305 1 – 2 years ​ 12,740 2 – 3 years ​ 8,754 3 – 4 years ​ 8,537 4 – 5 years ​ 1,026 Total ​ $ 168,362 ​

Long-Term Debt and FHLB Stock

Long-Term Debt and FHLB Stock	9 Months Ended
	Sep. 30, 2021
Long-Term Debt and FHLB Stock
Long-Term Debt and FHLB Stock	8. Long-Term Debt and FHLB Stock FHLB Borrowings and Stock The Bank is a member of the FHLB. At September 30, 2021 and December 31, 2020, the Bank had access to a preapproved secured line of credit with the FHLB of $631,297 and $564,330, respectively. Borrowings under this line require collateralization through the pledge of specific loans and securities. At September 30, 2021 and December 31, 2020, the Bank had pledged assets of $170,587 and $175,011, respectively. ​ The outstanding principal amounts and the related terms and rates at September 30, 2021 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Principal Maturity Rate ​ Due in one year Long term 3 year amortizing ​ $ 2,571 ​ May 16, 2022 2.49 % ​ $ 2,571 ​ — 3 year bullet ​ ​ 10,000 ​ May 16, 2022 ​ 2.44 % ​ ​ 10,000 ​ ​ — 3 year amortizing ​ ​ 7,574 ​ February 28, 2023 ​ 1.32 % ​ ​ 5,033 ​ ​ 2,541 Total ​ $ 20,145 ​ Weighted Average Rate 2.03 % ​ $ 17,604 ​ $ 2,541 ​ The Bank is required to maintain an investment in capital stock of the FHLB, as collateral, in an amount equal to a certain percentage of its outstanding debt. FHLB stock is considered restricted stock and is carried at cost. The Bank evaluates FHLB stock for impairment based on the ultimate recovery ability of the cost. No impairment was recognized at either September 30, 2021 or December 31, 2020. Subordinated Debt In addition to the Bank, the Company has one other wholly-owned subsidiary, RSB Capital Trust I (the “Trust”). In 2005, the Trust issued $5,000 of pooled trust preferred securities in a private placement and issued 155 shares of common stock at $1 par value per share, now owned by the Company. The Trust, which has no independent assets or operations, was formed in 2005 for the sole purpose of issuing trust preferred securities and investing the proceeds thereof in an equivalent amount of junior subordinated debentures. The proceeds from the issuance of the trust preferred securities were down-streamed to the Bank and are currently considered Tier 1 capital for purposes of determining the Bank’s capital ratios. The trust securities bear interest at 3-month LIBOR plus 2.00%. The duration of the Trust is 30 years. The subordinated debt securities of $5,155 are unsecured obligations of the Company and are subordinate and junior in right of payment to all present and future senior indebtedness of the Company. The Company has entered into a guarantee, which together with its obligations under the subordinated debt securities and the declaration of trust governing the Trust, including its obligations to pay costs, expenses, debts and liabilities, provides a full and unconditional guarantee of amounts on the capital securities. The subordinated debentures, which bear interest at 3-month LIBOR plus 2.00% (2.13% at September 30, 2021 and 2.21% at December 31, 2020) mature on May 23, 2035. As it is anticipated that LIBOR will be discontinued after 2021, the Company is reviewing the agreements for the above debt to determine alternative reference rates and does not anticipate there will be a significant financial statement impact. Other Borrowings The Bank also has an unsecured, uncommitted $10,000 line of credit with Zions Bank. There were no advances outstanding under this line of credit at either September 30, 2021 or December 31, 2020.

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2021
Employee Benefits
Employee Benefits	9. Employee Benefits Pension Plan The Bank maintains a noncontributory defined benefit pension plan covering substantially all of its employees 21 years of age or older who had completed at least one year of service as of September 30, 2012, the effective date on which the Board of Directors of the Bank voted to freeze the defined benefit plan. The following table sets forth the plan’s funded status and amounts recognized in the Company’s consolidated statements of financial condition: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Projected and accumulated benefit obligation ​ $ (23,367) ​ $ (23,964) ​ Plan assets at fair value ​ 22,199 ​ 22,634 ​ Funded status included in accrued expenses and other liabilities ​ $ (1,168) ​ $ (1,330) ​ ​ The net periodic pension cost and amounts recognized in other comprehensive income are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine months ended September 30, ​ ​ 2021 2020 ​ Interest cost ​ $ 442 ​ $ 502 ​ Expected return on plan assets ​ (708) ​ (639) ​ Amortization of unrecognized loss ​ 269 ​ 214 ​ Net periodic cost (benefit) ​ $ 3 ​ $ 77 ​ ​ The expected long-term rate of return on plan assets has been determined by applying historical average investment returns from published indexes relating to the current allocation of assets in the plan. Plan assets are invested in pooled separate accounts consisting of underlying investments in ten diversified investment funds. As of September 30, 2021, the investment funds included seven equity funds and three fixed income bond funds, each with its own investment objectives, investment strategies and risks, as detailed in the Company’s investment policy statement. The Company determines the appropriate strategic asset allocation versus plan liabilities, as governed by the investment policy statement. The assets of the plan are invested under the supervision of the Company’s investment committee in accordance with the investment policy statement. The investment options of the plan are chosen in a manner consistent with generally accepted standards of fiduciary responsibility. The investment performance of the Company’s individual investment managers, with the assistance of the Company’s investment consultant, is monitored on a quarterly basis and is reviewed at least annually relative to the objectives and guidelines as stated in the Company’s investment policy statement. The Company did not make a contribution to the plan in the first nine months of 2021 or 2020. The fair value of the Company’s pension plan assets, by fair value hierarchy, are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ Level 1 Level 2 Level 3 Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment in separate accounts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed income ​ $ 15,560 ​ $ — ​ $ — ​ $ 15,560 Equity ​ 6,639 ​ — ​ — ​ 6,639 Total assets at fair value ​ $ 22,199 ​ $ — ​ $ — ​ $ 22,199 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ Level 1 Level 2 Level 3 Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment in separate accounts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed income ​ $ 15,189 ​ $ — ​ $ — ​ $ 15,189 Equity ​ 6,206 ​ — ​ — ​ 6,206 Other ​ ​ 1,239 ​ ​ — ​ ​ — ​ ​ 1,239 Total assets at fair value ​ $ 22,634 ​ $ — ​ $ — ​ $ 22,634 ​ The pooled separate accounts are valued at the net asset per unit based on either the observable net asset value of the underlying investment or the net asset value of the underlying pool of securities. Net asset value is based on the value of the underlying assets owned by the fund, minus its liabilities and then divided by the number of shares outstanding. For a detailed disclosure on the Bank’s pension and employee benefits plans, please refer to Note 8 of the Company’s Consolidated Financial Statements for the year ended December 31, 2020 included in the Company’s Annual Report on Form 10-K Defined Contribution Plan The Company sponsors a 401(k) defined contribution plan. Participants are permitted, in accordance with the provisions of Section 401(k) of the Internal Revenue Code, to contribute up to 25% of their earnings (as defined) into the plan with the Company matching up to 6%, subject to Internal Revenue Service limitations. The Company’s contributions charged to operations amounted to $798 and $732 for the nine months ended September 30, 2021 and 2020, respectively. ​ ​ Deferred Compensation Arrangements Directors’ Plan The Bank’s Deferred Compensation Plan for Fees of Directors, as amended and restated effective January 1, 2005 (the “Directors’ Plan”), covers Directors who elect to defer receipt of all or a portion of their fees until separation from service. Upon resignation, retirement, or death, the participant’s total deferred compensation, including earnings thereon, will be paid out. At September 30, 2021 and December 31, 2020, total amounts due of $2,749 and $2,483, respectively, are included in accrued expenses and other liabilities. Total expenses related to the Directors’ Plan were $106 and $131 for the nine months ended September 30, 2021 and 2020, respectively, which were included in other non-interest expense in the consolidated statements of income. Executive Long-Term Incentive and Retention Plan The Bank maintains an Executive Long-Term Incentive and Retention Plan (the “Executive Plan”). Participation in the Executive Plan is limited to officers of the Company designated as participants by the Board of Directors and who filed a properly completed and executed participation agreement in accordance with the terms of the Executive Plan. Under the Executive Plan, the Board of Directors may grant annual incentive awards equal to a percentage of a participant’s base salary at the rate in effect on the last day of the Plan year, as determined by the Board of Directors based on the attainment of criteria established annually by the Board of Directors. Incentive awards under the Executive Plan are credited to the participant’s incentive benefit account as of the last day of the Executive Plan year to which the award relates and earn interest at a rate determined annually by the Board of Directors. Participants vest in their benefit accounts in accordance with the vesting schedule approved by the Board of Directors, which ranges from one Group Term Replacement Plan Under the terms of the “Group Term Replacement Plan”, the Company provides postretirement life insurance benefits to certain officers. The liability related to these postretirement benefits is being accrued over the individual participants’ service period and aggregated $1,419 and $1,387, at September 30, 2021 and December 31, 2020, respectively. The Company recognized expenses of $32 and $43 for the nine-month periods ended September 30, 2021 and September 30, 2020, respectively, related to this plan, which are included in salaries and employee benefits expense in the consolidated statements of income. Other Director and Officer Postretirement Benefits The Company has individual fee continuation agreements with certain directors and a supplemental retirement agreement with an executive officer which provide for fixed postretirement benefits to be paid to the directors and the officer, or their beneficiaries, for periods ranging from 15 to 20 years. In addition, the Company has agreements with certain directors which provide for certain postretirement life insurance benefits. The liability related to these postretirement benefits is being accrued over the individual participants’ service period and aggregated $1,977 and $2,148 at September 30, 2021 and December 31, 2020, respectively. The Company recognized expenses of $56 and $65 for the nine months ended September 30, 2021 and 2020, respectively, related to these benefits, which are included in other non-interest expenses in the consolidated statements of income. Employee Stock Ownership Plan On January 1, 2019, the Bank established an Employee Stock Ownership Plan (“ESOP”) to provide eligible employees the opportunity to own Company stock. The plan is a tax-qualified retirement plan for the benefit of Bank employees. On January 16, 2019, the Company granted a loan to the ESOP for the purchase of 436,425 shares of the Company’s common stock at a price of $10.00 per share. The loan obtained by the ESOP from the Company is payable annually over 20 years at a rate per annum equal to the Prime Rate, reset annually on January 1st (3.25% at January 1, 2021). Loan payments are funded by cash contributions from the Bank. The loan is secured by the shares purchased, which are held in a suspense account for allocation among participants as the loan is repaid. The balance of the ESOP loan at September 30, 2021 was $4,087. Contributions are allocated to eligible participants on the basis of compensation, subject to federal tax limits. The number of shares committed to be released annually is 21,821 through 2039. Shares held by the ESOP include the following: ​ ​ ​ ​ ​ ​ ​ ​ Nine months ended ​ Year ended ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 Allocated ​ 43,642 21,821 Committed to be allocated ​ 16,362 21,821 Unallocated ​ 376,421 392,783 Paid out to participants ​ (68) ​ (68) Total shares ​ 436,357 436,357 ​ The fair value of unallocated shares was $4,103 at September 30, 2021. Total compensation expense recognized in connection with the ESOP for the nine months ended September 30, 2021 and 2020 was $168 and $129, respectively. Share-Based Compensation Plan On May 26, 2020, stockholders of the Company approved the 2020 Equity Incentive Plan (the “EIP”). The EIP authorizes the issuance or delivery to participants of up to 763,743 shares of Rhinebeck Bancorp common stock pursuant to grants of incentive and non-qualified stock options, restricted stock awards and restricted stock units. Of this number, the maximum number of shares of Rhinebeck Bancorp common stock that may be issued under the EIP pursuant to the exercise of stock options is 545,531 shares, and the maximum number of shares of Rhinebeck Bancorp common stock that may be issued as restricted stock awards or restricted stock units is 218,212 shares. These amounts represent 4.90% and 1.96%, respectively, of the number of shares of common stock issued in the stock offering of Rhinebeck Bancorp, including the shares issued to Rhinebeck Bancorp, MHC. Pursuant to terms of the EIP, on August 25, 2020, the Board of Directors granted restricted stock and stock options to employees and directors. All of the awards vest annually over a three-year period from the date of the grant and the term of each option is ten years. As of September 30, 2021, there were 97,146 stock options and 48,443 restricted stock awards that remain available for future grants. The fair value of each option granted under the EIP is estimated on the date of grant using the Black-Scholes Option-Pricing Model. The expected volatility is based on the historical volatility of a peer group of comparable SEC-reporting bank holding companies. The dividend yield assumption is based on the Company’s expectation of dividend payouts. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the date of grant. The Company has elected to recognize forfeitures as they occur. ​ ​ A summary of options under the 2020 EIP as of September 30, 2021 is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted - ​ Weighted-Average ​ ​ Number of ​ Average ​ Remaining Contractual ​ ​ Shares ​ Exercise Price ​ Term (in Years) Options outstanding at beginning of year ​ 448,385 ​ $ 6.61 ​ 9.66 Options granted ​ - ​ ​ - ​ - Options exercised ​ (5,455) ​ ​ 6.57 ​ - Forfeited ​ - ​ ​ - ​ - Options outstanding at September 30, 2021 ​ 442,930 ​ $ 6.62 ​ 8.92 Options exercisable at September 30, 2021 ​ 138,997 ​ ​ 6.57 ​ 8.91 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At September 30, 2021, the aggregate intrinsic value of the shares outstanding, which fluctuates based on changes in the fair market value of the Company’s stock, was $1,898 . The aggregate intrinsic value represents the total pre-tax intrinsic value (i.e., the difference between the Company’s closing stock price on the last trading day of period and the weighted-average exercise price, multiplied by the number of shares) that would have been received by the option holders had all option holders exercised their options on September 30, 2021. ​ As of September 30, 2021, there was $476 of unrecognized compensation cost related to the nonvested stock options granted under the 2020 EIP. The cost is expected to be recognized over a remaining period of 1.91 years. The following table summarizes the Company’s restricted stock activity for the nine months ended September 30, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ Number ​ ​ Grant Date ​ ​ of Shares ​ ​ Fair Value per Share Non-vested restricted stock at beginning of year ​ 169,769 ​ $ 6.57 Granted ​ - ​ - Vested ​ (56,582) ​ 6.57 Forfeited ​ - ​ - Non-vested restricted stock at September 30, 2021 ​ 113,187 ​ $ 6.57 ​ As of September 30, 2021, there was $706 of unrecognized compensation cost related to the nonvested restricted stock awards granted under the 2020 EIP. The cost is expected to be recognized over a remaining period of 1.90 years. For the nine months ended September 30, 2021, share-based compensation under the plan was $464.

Leases

Leases	9 Months Ended
	Sep. 30, 2021
Leases
Leases	10. Leases As of September 30, 2021, the Company leases real estate for eight branch offices and two administrative offices under various lease agreements. All of our leases are classified as operating leases, and therefore, were previously not recognized on the Company’s consolidated statements of financial condition. With the adoption of Accounting Standards Update 2016-02, Leases (Topic 842), operating lease agreements are required to be recognized on the consolidated statements of financial condition as a right-of-use (“ROU”) asset and a corresponding lease liability. The calculated amount of the ROU assets and lease liabilities are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s leases have maturities which range from 2021 to 2041, some of which include lessee options to extend the lease term. If the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. The weighted average remaining life of the lease terms for these leases was 12.7 years as of September 30, 2021. As most of our leases do not provide an implicit rate, the Company used its incremental borrowing rate, the rate of interest to borrow on a collateralized basis for a similar term, at the lease commencement date. The Company utilized a weighted average discount rate of 2.56% in determining the lease liability as of September 30, 2021. For the nine months ended September 30, 2021, total operating lease costs were $539 and were included in occupancy and other expense. Deferred rent liability was $152 at September 30, 2021 and $176 at December 31, 2020. The right-of-use asset, included in other assets, accrued expenses and other liabilities, ​ Future minimum payments for operating leases with initial or remaining terms of one year or more as of September 30, 2021 were as follows: ​ ​ ​ ​ ​ Years ending December 31: ​ ​ 2021 ​ $ 198 2022 ​ 754 2023 ​ 732 2024 ​ 729 2025 ​ 743 Thereafter ​ 5,822 Total future minimum lease payments ​ ​ 8,978 Amounts representing interest ​ ​ (1,392) Present Value of Net Future Minimum Lease Payments ​ $ 7,586 ​

Commitments and Contingencies a

Commitments and Contingencies and Derivatives	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies and Derivatives
Commitments and Contingencies and Derivatives	11. Commitments and Contingencies and Derivatives Legal Matters The Company is involved in various legal proceedings which have arisen in the normal course of business. Management believes that resolution of these matters will not have a material effect on the Company’s financial condition or results of operations. Employment Agreements The Company has entered into employment agreements with certain officers. The agreements provide for base salaries and incentive compensation based on performance criteria outlined in the agreements. The agreements also provide for insurance and various other benefits. Financial Instruments with Off-Balance-Sheet Risk In the normal course of business, the Company is a party to financial instruments with off-balance-sheet risk to meet the financing needs of its customers. These financial instruments include standby letters of credit and commitments to extend credit, which include new loan commitments and undisbursed portions of construction loans and other lines of credit. These financial instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the statements of financial condition. The contractual amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. The contractual amounts of commitments to extend credit represent the amounts of potential loss should the contract be fully drawn upon, the customer defaults and the value of any existing collateral become worthless. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. Financial instruments whose contract amounts represent off-balance sheet credit risk are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Commitments to extend credit summarized as follows: ​ ​ ​ ​ ​ ​ ​ Future loan commitments ​ $ 12,236 ​ $ 14,356 ​ Undisbursed construction loans ​ 2,693 ​ 3,493 ​ Undisbursed home equity lines of credit ​ 10,834 ​ 10,686 ​ Undisbursed commercial and other line of credit ​ 72,089 ​ 63,911 ​ Standby letters of credit ​ 3,050 ​ 5,681 ​ Total ​ $ 100,902 ​ $ 98,127 ​ ​ Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Since these commitments could expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the counterparty. Collateral held varies but may include residential and commercial property, deposits and securities. Interest Rate Swaps The Company enters into interest rate swaps that allow commercial loan customers to effectively convert a variable-rate loan agreement to a fixed-rate loan agreement. Under these agreements, the Company simultaneously enters into a variable-rate loan and interest rate swap agreements with a customer. The Company then enters into a corresponding and offsetting swap agreement with a third party to hedge its exposure created by the customer agreements. The interest rate swaps with both the customers and third parties are not designated as hedges under FASB ASC Topic 815, Derivatives and Hedging, and are marked to market through earnings. The fair values of the swaps are recorded as both an asset and a liability, in other assets and other liabilities, respectively, in equal amounts for these transactions. The accrued interest receivable and payable of $9 and $0 related to our swaps is recorded in other assets and other liabilities as of September 30, 2021 and 2020, respectively. Summary information regarding these derivatives is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ Notational amount ​ $ 9,018 ​ ​ $ 1,875 ​ Fair value ​ $ 143 ​ ​ $ 41 ​ Weighted average pay rates ​ ​ 3.51 % ​ ​ 3.10 % Weighted average receive rates ​ ​ 2.29 % ​ ​ 2.22 % Weighted average maturity (in years) ​ ​ 9.61 ​ ​ ​ 9.92 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of Contracts ​ ​ 5 ​ ​ ​ 1 ​ ​

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2021
Regulatory Matters
Regulatory Matters	12. Regulatory Matters The Bank is subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities and certain off-balance-sheet items, as calculated under regulatory accounting practices. The Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. The final rules implementing the BASEL Committee on Banking Supervisor’s Capital Guidance for U.S. Banks (BASEL III) became effective for the Bank on January 1, 2016. Compliance with the requirements was phased in over a four year period with full compliance as of January 1, 2019. All presented capital ratios are calculated using BASEL III rules. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the tables below) of total, common equity Tier 1 and Tier I capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier I capital (as defined) to average assets (as defined). Management believes, as of September 30, 2021 and December 31, 2020, that the Bank met all capital adequacy requirements to which they are subject. The most recent notification from the Federal Deposit Insurance Corporation (“FDIC”) categorized the Bank as “well capitalized” under the regulatory framework. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, common equity Tier 1, Tier I risk-based and Tier I leverage ratios as set forth in the table below. There are no conditions or events since then, which management believes have changed the Bank’s category. The Bank’s actual capital amounts and ratios were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ To be Well Capitalized under ​ ​ ​ ​ ​ ​ ​ For Capital Adequacy ​ Prompt Corrective Action ​ ​ Actual ​ Purposes ​ Provisions ​ Amount Ratio Amount Ratio Amount Ratio ​ ​ September 30, 2021 Rhinebeck Bank ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total capital (to risk-weighted assets) ​ $ 128,554 14.12 % $ 72,810 8.00 % $ 91,012 10.00 % Tier 1 capital (to risk-weighted assets) ​ 119,520 13.13 % 54,607 6.00 % 72,810 8.00 % Common equity tier one capital (to risk weighted assets) ​ 119,520 13.13 % 40,955 4.50 % 59,158 6.50 % Tier 1 capital (to average assets) ​ 119,520 9.58 % 49,922 4.00 % 62,403 5.00 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Rhinebeck Bank ​ ​ ​ ​ Total capital (to risk-weighted assets) ​ $ 121,604 13.97 % $ 69,614 8.00 % $ 87,018 10.00 % Tier 1 capital (to risk-weighted assets) ​ 110,717 12.72 % 52,211 6.00 % 69,614 8.00 % Common equity tier one capital (to risk weighted assets) ​ 110,717 12.72 % 39,158 4.50 % 56,562 6.50 % Tier 1 capital (to average assets) ​ 110,717 9.95 % 44,529 4.00 % 55,662 5.00 % ​

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2021
Fair Value
Fair Value	13. Fair Value The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. A description of the valuation methodologies used for assets and liabilities recorded at fair value and for estimating fair value for financial and non-financial instruments not recorded at fair value, is set forth below. Cash and Due from Banks The carrying amount is a reasonable estimate of fair value. Available for Sale Securities Where quoted prices are available in an active market for identical securities, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities include marketable equity securities and U.S. Treasury obligations. If quoted prices are not available, then fair values are estimated by using pricing models (i.e., matrix pricing) or quoted prices of securities with similar characteristics and are classified within Level 2 of the valuation hierarchy. Examples of such instruments include government agency bonds, mortgage-backed securities and municipal bonds. Level 3 securities include securities for which significant unobservable inputs are utilized. Available for sale securities are recorded at fair value on a recurring basis. FHLB Stock The carrying value of FHLB stock approximates fair value based on the redemption provisions of the FHLB. Loans Loans receivable are carried at cost. For variable rate loans which reprice frequently carrying values are a reasonable estimate of fair values, adjusted for credit losses inherent in the portfolios. The fair value of fixed rate loans is estimated by discounting the future cash flows using the year end rates, estimated using local market data, at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities, adjusted for credit losses inherent in the portfolios. The Company does not record loans at fair value on a recurring basis. However, from time to time, nonrecurring fair value adjustments to collateral-dependent impaired loans are recorded to reflect partial write-downs based on the observable market price or current appraised value of collateral. Other Real Estate Owned Other real estate owned represents real estate acquired through foreclosure and is carried at fair value less estimated selling costs. Fair value is based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. These assets are included as Level 3 fair values, based upon the lowest level of input that is utilized in the fair value measurements. Mortgage Servicing Rights The fair value of mortgage servicing rights is based on a valuation model that calculates the present value of estimated future net servicing income. Mortgage servicing rights are carried at the lower of amortized cost or estimated fair value and are included in other assets on the consolidated statements of financial condition. Deposits Deposit liabilities are carried at cost. The fair value of NOW, savings and money market deposits is the amount payable on demand at the reporting date. The fair value of time certificates of deposit is estimated using a discounted cash flow calculation that applies interest rates currently being offered for deposits of similar remaining maturities estimated using local market data to a schedule of aggregated expected maturities on such deposits. Mortgagors’ escrow account The fair value is estimated using a discounted cash flow calculation that applies interest rates currently being offered on deposited escrow accounts of similarly expected maturities. Advances from the FHLB The fair value of the advances is estimated using a discounted cash flow calculation that applies current FHLB interest rates for advances of similar maturity to a schedule of maturities of such advances. Subordinated Debt Based on the floating rate characteristic of these instruments, the carrying value is considered to approximate fair value. Off-Balance-Sheet Instruments Fair values for off-balance-sheet lending commitments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standings. Such amounts are not significant. Loan level interest rate Swaps The fair value is based on settlement values adjusted for credit risks associated with the counterparties and the Company and observable market interest rate curves. ​ ​ ​ The following tables detail the assets that are carried at fair value on a recurring basis as of the periods shown and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine the fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Significant ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ Balance Assets (Level 1) Inputs (Level 2) Inputs (Level 3) ​ ​ September 30, 2021 Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury securities ​ $ 40,189 ​ $ 40,189 ​ $ — ​ $ — U.S. government agency mortgage-backed securities-residential ​ ​ 156,897 ​ ​ — ​ ​ 156,897 ​ ​ — U.S. government agency securities ​ 26,878 ​ — ​ 26,878 ​ — Municipal securities ​ 7,010 ​ — ​ 6,865 ​ 145 Corporate Bonds ​ ​ 8,775 ​ ​ — ​ ​ 8,775 ​ ​ — Other ​ 640 ​ — ​ 640 ​ — Total available for sale securities ​ ​ 240,389 ​ ​ 40,189 ​ ​ 200,055 ​ ​ 145 Loan level interest rate swaps ​ ​ 143 ​ ​ — ​ ​ 143 ​ ​ — Total assets ​ $ 240,532 ​ $ 40,189 ​ $ 200,198 ​ $ 145 Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loan level interest rate swaps ​ ​ 143 ​ ​ — ​ ​ 143 ​ ​ — Total liabilities ​ $ 143 ​ $ — ​ $ 143 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. government agency mortgage-backed securities – residential ​ $ 89,270 ​ $ — ​ $ 89,270 ​ $ — U.S. government agency securities ​ 7,161 ​ — ​ 7,161 ​ — Municipal securities ​ 1,476 ​ — ​ 1,316 ​ 160 Corporate Bonds ​ ​ 4,446 ​ ​ — ​ ​ 4,446 ​ ​ — Other ​ ​ 580 ​ ​ — ​ 580 ​ — Total available for sale securities ​ ​ 102,933 ​ ​ — ​ ​ 102,773 ​ ​ 160 Loan level interest rate swaps ​ ​ 41 ​ ​ — ​ ​ 41 ​ ​ — Total assets ​ $ 102,974 ​ $ — ​ $ 102,814 ​ $ 160 Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loan level interest rate swaps ​ ​ 41 ​ ​ — ​ ​ 41 ​ ​ — Total liabilities ​ $ 41 ​ $ — ​ $ 41 ​ $ — ​ The following tables detail the assets carried at fair value and measured at fair value on a nonrecurring basis as of September 30, 2021 and December 31, 2020 and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine the fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Significant ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ Balance Assets (Level 1) Inputs (Level 2) Inputs (Level 3) ​ ​ September 30, 2021 Impaired loans, with specific reserves ​ $ 212 ​ $ — ​ $ — ​ $ 212 Other real estate owned ​ 89 ​ — ​ — ​ 89 Total ​ $ 301 ​ $ — ​ $ — ​ $ 301 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Impaired loans, with specific reserves ​ $ 509 ​ $ — ​ $ — ​ $ 509 Other real estate owned ​ 139 ​ — ​ — ​ 139 Total ​ $ 648 ​ $ — ​ $ — ​ $ 648 ​ Impaired loans that are measured for impairment using the fair value of the collateral for collateral dependent loans had recorded investments of $280 and $662 with valuation allowances of $68 and $153, resulting fair values of $212 and $509 at September 30, 2021 and December 31, 2020, respectively. The valuation allowance represents specific allocations for the allowance for credit losses for impaired loans. ​ The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative Information About Level 3 Fair Value Measurements ​ ​ Fair Value ​ Valuation ​ Unobservable ​ Range ​ Estimate Techniques Input (Weighted Average) ​ ​ September 30, 2021 Impaired loans ​ $ 212 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ ​ ​ ​ ​ ​ Appraisal adjustments (2) 0% to 20% Other real estate owned ​ 89 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ ​ ​ ​ Appraisal adjustments (2) 0% to 20% ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Impaired loans ​ $ 509 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ ​ ​ ​ ​ ​ Appraisal adjustments (2) 0% to 20% Other real estate owned ​ 139 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ Appraisal adjustments (2) 0% to 20% (1) Fair value is generally through independent appraisals of the underlying collateral that generally include various level 3 inputs which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraised value. (3) Estimated costs to sell. The Company discloses fair value information about financial instruments, whether or not recognized in the statements of financial condition, for which it is practicable to estimate that value. Certain financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The estimated fair value amounts for 2021 and 2020 have been measured as of their respective reporting dates and have not been reevaluated or updated for purposes of these financial statements subsequent to those respective dates. As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates may be different than amounts reported at each year-end. The information presented should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only required for a limited portion of the Company’s assets and liabilities. Due to the wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Company’s disclosures and those of other companies may not be meaningful. As of the following dates, the carrying value and fair values of the Company’s financial instruments were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ ​ 2021 ​ 2020 ​ ​ Carrying Value Fair Value Carrying Value Fair Value ​ Financial Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and due from banks (Level 1) ​ $ 114,587 ​ $ 114,587 ​ $ 93,485 ​ $ 93,485 ​ Available for sale securities (Level 1) ​ 40,189 ​ 40,189 ​ — ​ — ​ Available for sale securities (Level 2) ​ 200,055 ​ 200,055 ​ 102,773 ​ 102,773 ​ Available for sale securities (Level 3) ​ 145 ​ 145 ​ 160 ​ 160 ​ Loan level interest rate swaps (Level 2) ​ ​ 143 ​ ​ 143 ​ ​ 41 ​ ​ 41 ​ FHLB stock (Level 2) ​ 1,417 ​ 1,417 ​ 2,787 ​ 2,787 ​ Loans, net (Level 3) ​ 833,841 ​ 830,263 ​ 873,813 ​ 876,699 ​ Mortgage servicing rights (Level 3) ​ 2,639 ​ 4,486 ​ 2,390 ​ 3,569 ​ Financial Liabilities: ​ ​ ​ ​ ​ Deposits (Level 2) ​ 1,087,387 ​ 1,077,152 ​ 929,364 ​ 941,460 ​ Mortgagors' escrow accounts (Level 2) ​ 4,264 ​ 4,269 ​ 8,494 ​ 8,501 ​ FHLB advances (Level 2) ​ 20,145 ​ 20,349 ​ 50,674 ​ 51,468 ​ Subordinated debt (Level 2) ​ 5,155 ​ 5,155 ​ 5,155 ​ 5,155 ​ Loan level interest rate swaps (Level 2) ​ ​ 143 ​ ​ 143 ​ ​ 41 ​ ​ 41 ​ ​

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Loss.
Accumulated Other Comprehensive Loss	14. Accumulated Other Comprehensive Loss The activity in accumulated other comprehensive loss for the three and nine months ended September 30, 2021 and 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated Other Comprehensive Loss (1) ​ ​ ​ ​ ​ Unrealized (losses) ​ ​ ​ ​ ​ ​ ​ ​ gains on ​ ​ ​ ​ ​ Defined Benefit ​ available for sale ​ ​ ​ ​ Pension Plan securities Total Balance at June 30, 2021 ​ $ (4,605) ​ $ (126) ​ $ (4,731) Other comprehensive loss before reclassifications ​ (120) ​ (472) ​ (592) Amounts reclassified from accumulated other comprehensive loss ​ 71 ​ — ​ 71 Period change ​ (49) ​ (472) ​ (521) Balance at September 30, 2021 ​ $ (4,654) ​ $ (598) ​ $ (5,252) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at June 30, 2020 ​ $ (4,663) ​ $ 1,842 ​ $ (2,821) Other comprehensive gain (loss) before reclassifications ​ 637 ​ (431) ​ 206 Amounts reclassified from accumulated other comprehensive loss ​ 56 ​ — ​ 56 Period change ​ 693 ​ (431) ​ 262 Balance at September 30, 2020 ​ $ (3,970) ​ $ 1,411 ​ $ (2,559) (1) All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0%. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated Other Comprehensive Loss (1) ​ ​ ​ ​ ​ Unrealized gains ​ ​ ​ ​ ​ ​ ​ ​ (losses) on ​ ​ ​ ​ ​ Defined Benefit ​ available for sale ​ ​ ​ ​ Pension Plan securities Total Balance at December 31, 2020 ​ $ (4,784) ​ $ 993 ​ $ (3,791) Other comprehensive loss before reclassifications ​ (83) ​ (1,591) ​ (1,674) Amounts reclassified from accumulated other comprehensive loss ​ 213 ​ — ​ 213 Period change ​ 130 ​ (1,591) ​ (1,461) Balance at September 30, 2021 ​ $ (4,654) ​ $ (598) ​ $ (5,252) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at December 31, 2019 ​ $ (3,909) ​ $ (195) ​ $ (4,104) Other comprehensive (loss) gain before reclassifications ​ (230) ​ 1,583 ​ 1,353 Amounts reclassified from accumulated other comprehensive loss ​ 169 ​ 23 ​ 192 Period change ​ (61) ​ 1,606 ​ 1,545 Balance at September 30, 2020 ​ $ (3,970) ​ $ 1,411 ​ $ (2,559) (1) All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0%. ​

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share
Earnings Per Share	15. Earnings Per Share Basic earnings per share represent income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed in a manner similar to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental shares (computed using the treasury method) that would have been outstanding if all potentially dilutive common stock equivalents (such as options) were issued during the period. Unearned ESOP shares are not deemed outstanding for earnings per share calculations. There were no potentially dilutive common stock equivalents for the three or nine months ended September 30, 2020. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended September 30, ​ Nine months ended September 30, ​ 2021 2020 ​ 2021 ​ 2020 Net income applicable to common stock ​ $ 2,685 ​ $ 1,150 ​ $ 8,571 ​ $ 3,573 ​ ​ ​ ​ ​ Average number of common shares outstanding ​ 11,153,186 ​ 11,133,290 ​ 11,139,944 ​ 11,133,290 Less: Average unearned ESOP shares ​ 379,148 ​ 400,969 ​ 384,602 ​ 406,423 Average number of common shares outstanding used to calculate basic earnings per common share ​ 10,774,038 ​ 10,732,321 ​ 10,755,342 ​ 10,726,867 Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share ​ ​ 61,444 ​ ​ — ​ ​ 64,311 ​ ​ — Additional common stock equivalents (stock options) used to calculate diluted earnings per share ​ ​ 111,453 ​ ​ — ​ ​ 94,776 ​ ​ — Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share ​ ​ 10,946,935 ​ ​ 10,732,321 ​ ​ 10,914,429 ​ ​ 10,726,867 ​ ​ ​ ​ ​ Earnings per Common share: ​ ​ ​ ​ Basic ​ $ 0.25 ​ $ 0.10 ​ $ 0.80 ​ $ 0.33 Diluted ​ $ 0.25 ​ $ 0.10 ​ $ 0.79 ​ $ 0.33 ​

Nature of Business and Signif_2

Nature of Business and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Nature of Business and Significant Accounting Policies
Basis of Financial Statement Presentation	Basis of Financial Statements Presentation The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and general practices within the banking industry. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities, as of the date of the consolidated statements of financial condition and reported amounts of revenues and expenses for the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, the valuation of securities, the evaluation of investment securities for other-than-temporary impairment, the evaluation of goodwill for impairment, the valuation of deferred tax assets and the determination of pension obligations.
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. All significant intercompany accounts and transactions have been eliminated in consolidation. On March 12, 2021, the Bank completed a branch purchase and assumption transaction with ConnectOne Bank. Management concluded that the acquisition represented a business combination, which is accounted for using the acquisition method, with the results of operations included in the Company’s consolidated financial statements as of the acquisition date. For additional information, see Note 2.
Reclassifications	Reclassifications Certain amounts in the prior year consolidated financial statements have been reclassified to conform to the current year’s presentation.
COVID-19	COVID-19 Significant progress has been made to combat the outbreak of COVID-19; however, the global pandemic has adversely impacted a broad range of industries in which the Company's customers operate and could still impair their ability to fulfill their financial obligations to the Company. The Company’s business is dependent upon the willingness and ability of its employees and customers to conduct banking and other financial transactions. If there is a resurgence in the virus or variant strains of the virus increase, the Company could experience further adverse effects on its business, financial condition, results of operations and cash flows. It is not possible to know the full extent of the impact of COVID-19 and the effects it will have on the Company's future operations.
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13 on “Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU requires credit losses on most financial assets be measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (“CECL”) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The measurement of expected credit losses is based upon relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of the reported amount. On October 16, 2019, the FASB approved a delay for conversion to the CECL methodology to January 2023 for smaller reporting companies, other public business entities, private companies and non-profits. The Company is currently assessing the effect of ASU No. 2016-13 and has engaged with a software vendor to assist in its efforts.
Emerging Growth Company Status	Emerging Growth Company Status As an emerging growth company, the Company may delay adoption of new or revised financial accounting standards until such date that the standards are required to be adopted by non-issuer companies. If such standards would not apply to non-issuer companies, no deferral would be applicable. The Company is taking advantage of the benefits of the extended transition periods allowed under the Jumpstart Our Business Startups Act. Accordingly, the Company’s consolidated financial statements may not be comparable to those of public companies that adopt new or revised financial accounting standards as of an earlier date. The effective dates of the recent accounting standards reflect those that relate to non-issuer companies.

Acquisition (Tables)

Acquisition (Tables)	9 Months Ended
	Sep. 30, 2021
Acquisition
Schedule of estimated fair values of the assets acquired and liabilities assumed	​ ​ ​ ​ ​ ​ ​ March 12, Fair value of consideration transferred, assets acquired and liabilities assumed ​ 2021 Total cash received on acquisition ​ $ 32,767 ​ ​ ​ ​ Assets acquired ​ ​ ​ Fixed assets ​ ​ 113 Reimbursed expenses ​ ​ 9 Core deposit intangible (1) ​ ​ 330 Total assets acquired ​ ​ 452 ​ ​ ​ ​ Liabilities assumed ​ ​ ​ Deposits ​ ​ 33,863 Mark-to-market adjustment ​ ​ 181 Total liabilities assumed ​ ​ 34,044 Net liabilities acquired ​ ​ (33,592) Goodwill recognized ​ $ 825 _____________________________ (1) The core deposit intangible was determined to have an estimated life of approximately 13 years .

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investment Securities
Schedule of amortized cost, gross unrealized gains and losses and fair values of available for sale securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ ​ ​ Amortized Cost Gains Losses Fair Value U.S. Treasury securities ​ $ 40,397 ​ $ 1 ​ $ (209) ​ $ 40,189 U.S. government agency mortgage-backed securities–residential ​ ​ 157,595 ​ ​ 706 ​ ​ (1,404) ​ ​ 156,897 U.S. government agency securities ​ 26,810 ​ 107 ​ (39) ​ 26,878 Municipal securities (1) ​ 7,005 ​ 32 ​ (27) ​ 7,010 Corporate bonds ​ 8,700 ​ 107 ​ (32) ​ 8,775 Other ​ 640 ​ — ​ — ​ 640 Total ​ $ 241,147 ​ $ 953 ​ $ (1,711) ​ $ 240,389 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ ​ ​ Amortized Cost Gains Losses Fair Value U.S. government agency mortgage-backed securities–residential ​ $ 88,197 ​ $ 1,350 ​ $ (277) ​ $ 89,270 U.S. government agency securities ​ ​ 7,013 ​ 148 ​ — ​ 7,161 Municipal securities (1) ​ 1,445 ​ 31 ​ — ​ 1,476 Corporate bonds ​ ​ 4,400 ​ 49 ​ (3) ​ 4,446 Other ​ ​ 621 ​ — ​ (41) ​ 580 Total ​ $ 101,676 ​ $ 1,578 ​ $ (321) ​ $ 102,933 (1) The issuers of municipal securities are all within New York State.
Schedule of gross unrealized losses and fair value, securities in continuous unrealized loss position	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Less Than 12 Months ​ 12 Months or Longer ​ Total ​ ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities ​ $ 30,169 ​ $ (209) ​ $ — ​ $ — ​ $ 30,169 ​ $ (209) U.S. government agency mortgage-backed securities-residential ​ ​ 103,868 ​ ​ (1,186) ​ ​ 11,974 ​ ​ (218) ​ ​ 115,842 ​ ​ (1,404) U.S. government agency securities ​ ​ 14,719 ​ ​ (39) ​ ​ — ​ ​ — ​ ​ 14,719 ​ ​ (39) Municipal Securities ​ ​ 2,339 ​ ​ (27) ​ ​ — ​ ​ — ​ ​ 2,339 ​ ​ (27) Corporate Bonds ​ ​ 3,474 ​ ​ (26) ​ ​ 244 ​ ​ (6) ​ ​ 3,718 ​ ​ (32) Total ​ $ 154,569 ​ $ (1,487) ​ $ 12,218 ​ $ (224) ​ $ 166,787 ​ $ (1,711) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Less Than 12 Months ​ 12 Months or Longer ​ Total ​ ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. government agency mortgage-backed securities-residential ​ $ 30,243 ​ $ (269) ​ $ 293 ​ $ (8) ​ $ 30,536 ​ $ (277) Corporate Bonds ​ ​ 747 ​ ​ (3) ​ ​ — ​ ​ — ​ ​ 747 ​ ​ (3) Other ​ ​ 522 ​ ​ (41) ​ ​ — ​ ​ — ​ ​ 522 ​ ​ (41) Total ​ $ 31,512 ​ $ (313) ​ $ 293 ​ $ (8) ​ $ 31,805 ​ $ (321)
Schedule of maturities of debt securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ December 31, 2020 ​ Amortized Cost Fair Value Amortized Cost Fair Value Maturity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Within 1 year ​ $ 12,916 ​ $ 12,915 ​ $ 102 ​ $ 102 After 1 but within 5 years ​ 48,948 ​ 48,832 ​ 2,155 ​ 2,155 After 5 but within 10 years ​ 20,903 ​ 20,961 ​ 9,946 ​ 10,162 After 10 years ​ 145 ​ 145 ​ 655 ​ 664 Total Maturities ​ 82,912 ​ 82,853 ​ 12,858 ​ 13,083 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mortgage-backed securities ​ 157,595 ​ 156,896 ​ 88,197 ​ 89,270 Other ​ 640 ​ 640 ​ 621 ​ 580 Total ​ $ 241,147 ​ $ 240,389 ​ $ 101,676 ​ $ 102,933

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Loans and Allowance for Loan Losses
Schedule of summary loan portfolio	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Commercial real estate loans: ​ ​ Construction ​ $ 5,682 ​ $ 5,392 ​ Non-residential ​ 236,240 ​ 248,349 ​ Multi-family ​ 41,233 ​ 30,379 ​ Residential real estate loans ​ 35,830 ​ 39,239 ​ Commercial and industrial loans (1) ​ 117,755 ​ 154,016 ​ Consumer loans: ​ ​ ​ Indirect automobile ​ 377,116 ​ 376,260 ​ Home equity ​ 12,253 ​ 14,165 ​ Other consumer ​ 8,240 ​ 8,816 ​ Total gross loans ​ 834,349 ​ 876,616 ​ Net deferred loan costs ​ 8,526 ​ 8,830 ​ Allowance for loan losses ​ (9,034) ​ (11,633) ​ Total net loans ​ $ 833,841 ​ $ 873,813 ​ (1) Includes $44,080 and $75,366 in U.S. Small Business Administration (“SBA”), paycheck protection program (“PPP”) loans at September 30, 2021 and December 31, 2020, respectively.
Schedule of loans by risk rating and portfolio segment	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ Pass Special Mention Substandard Total Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,682 ​ $ — ​ $ — ​ $ 5,682 Non-residential ​ ​ 228,816 ​ ​ 5,189 ​ ​ 2,235 ​ ​ 236,240 Multifamily ​ 41,233 ​ — ​ — ​ 41,233 Residential real estate ​ 33,347 ​ — ​ 2,483 ​ 35,830 Commercial and industrial ​ 111,685 ​ 5,047 ​ 1,023 ​ 117,755 Consumer: ​ ​ ​ ​ ​ Indirect automobile ​ 376,639 ​ — ​ 477 ​ 377,116 Home equity ​ 12,029 ​ — ​ 224 ​ 12,253 Other consumer ​ 8,193 ​ — ​ 47 ​ 8,240 Total ​ $ 817,624 ​ $ 10,236 ​ $ 6,489 ​ $ 834,349 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ Pass Special Mention Substandard Total Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,392 ​ $ — ​ $ — ​ $ 5,392 Non-residential ​ ​ 240,778 ​ ​ 5,468 ​ ​ 2,103 ​ ​ 248,349 Multifamily ​ 30,379 ​ — ​ — ​ 30,379 Residential real estate ​ 36,597 ​ — ​ 2,642 ​ 39,239 Commercial and industrial ​ 147,748 ​ 5,395 ​ 873 ​ 154,016 Consumer: ​ ​ ​ ​ Indirect automobile ​ 375,270 ​ — ​ 990 ​ 376,260 Home equity ​ 13,819 ​ — ​ 346 ​ 14,165 Other consumer ​ 8,768 ​ — ​ 48 ​ 8,816 Total ​ $ 858,751 ​ $ 10,863 ​ $ 7,002 ​ $ 876,616
Schedule of classes of the loan portfolio by the aging categories of performing loans and nonaccrual loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ 30-59 Days ​ 60-89 Days ​ 90 Days Past ​ Total Loans ​ ​ ​ Current Past Due Past Due Due Receivable Non-accrual Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,682 ​ $ — ​ $ — ​ $ — ​ $ 5,682 ​ $ — Non-residential ​ ​ 232,909 ​ ​ — ​ ​ 1,243 ​ ​ 2,088 ​ ​ 236,240 ​ ​ 2,088 Multifamily ​ ​ 41,233 ​ ​ — ​ ​ — ​ ​ — ​ ​ 41,233 ​ ​ — Residential real estate ​ 34,561 ​ 58 ​ — ​ 1,211 ​ 35,830 ​ 2,483 Commercial and industrial ​ 116,418 ​ 409 ​ 186 ​ 742 ​ 117,755 ​ 884 Consumer: ​ ​ ​ ​ ​ ​ ​ ​ Indirect automobile ​ 371,303 ​ 4,576 ​ ​ 790 ​ 447 ​ 377,116 ​ 477 Home equity ​ 11,868 ​ 214 ​ 45 ​ 126 ​ 12,253 ​ 224 Other consumer ​ 8,051 ​ 107 ​ 35 ​ 47 ​ 8,240 ​ 47 Total ​ $ 822,025 ​ $ 5,364 ​ $ 2,299 ​ $ 4,661 ​ $ 834,349 ​ $ 6,203 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ Greater Than ​ ​ ​ ​ ​ ​ ​ ​ 30-59 Days ​ 60-89 Days ​ 90 Days Past ​ Total Loans ​ ​ ​ Current Past Due Past Due Due Receivable Non-accrual Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ $ 5,392 ​ $ — ​ $ — ​ $ — ​ $ 5,392 ​ $ — Non-residential ​ ​ 244,387 ​ ​ 1,985 ​ ​ 33 ​ ​ 1,944 ​ ​ 248,349 ​ ​ 1,944 Multifamily ​ ​ 30,379 ​ ​ — ​ ​ — ​ ​ — ​ ​ 30,379 ​ ​ — Residential real estate ​ 36,581 ​ 1,351 ​ 138 ​ 1,169 ​ 39,239 ​ 2,641 Commercial and industrial ​ 151,771 ​ 1,551 ​ 511 ​ 183 ​ 154,016 ​ 366 Consumer: ​ ​ ​ ​ ​ ​ ​ ​ Indirect automobile ​ 367,929 ​ 6,321 ​ 1,063 ​ 947 ​ 376,260 ​ 990 Home equity ​ 13,506 ​ 310 ​ 101 ​ 248 ​ 14,165 ​ 346 Other consumer ​ 8,663 ​ 98 ​ 7 ​ 48 ​ 8,816 ​ 48 Total ​ $ 858,608 ​ $ 11,616 ​ $ 1,853 ​ $ 4,539 ​ $ 876,616 ​ $ 6,335
Schedule of information to impaired loans by loan portfolio class	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ ​ Recorded ​ Unpaid Principal ​ Related ​ Average Recorded ​ Investment Balance Allowance Investment With no related allowance recorded: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Non-residential ​ $ 2,088 ​ $ 3,148 ​ $ — ​ $ 2,096 Multifamily ​ — ​ — ​ — ​ — Residential real estate ​ 2,483 ​ 3,025 ​ — ​ 2,561 Commercial and industrial ​ 884 ​ 1,156 ​ — ​ 589 Consumer: ​ ​ ​ ​ ​ ​ Indirect automobile ​ 197 ​ 257 ​ — ​ 232 Home equity ​ 224 ​ 225 ​ — ​ 357 Other consumer ​ 47 ​ 48 ​ — ​ 38 Total ​ $ 5,923 ​ $ 7,859 ​ $ — ​ $ 5,873 With an allowance recorded: ​ ​ ​ ​ Commercial and industrial ​ $ — ​ $ — ​ $ — ​ $ 153 Consumer: ​ ​ ​ ​ ​ ​ Indirect automobile ​ ​ 280 ​ ​ 287 ​ ​ 68 ​ ​ 337 Other consumer ​ — ​ — ​ — ​ 12 Total ​ $ 280 ​ $ 287 ​ $ 68 ​ $ 502 Total: ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ Non-residential ​ $ 2,088 ​ $ 3,148 ​ $ — ​ $ 2,096 Multifamily ​ — ​ — ​ — ​ — Residential real estate ​ 2,483 ​ 3,025 ​ — ​ 2,561 Commercial and industrial ​ 884 ​ 1,156 ​ — ​ 742 Consumer: ​ ​ ​ ​ Indirect automobile ​ 477 ​ 544 ​ 68 ​ 569 Home equity ​ 224 ​ 225 ​ — ​ 357 Other consumer ​ 47 ​ 48 ​ — ​ 50 Total ​ $ 6,203 ​ $ 8,146 ​ $ 68 ​ $ 6,375 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ ​ Recorded ​ Unpaid Principal ​ Related ​ Average Recorded ​ Investment Balance Allowance Investment With no related allowance recorded: ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ ​ ​ ​ ​ Non-residential ​ $ 1,944 ​ $ 2,973 ​ $ — ​ $ 3,086 Multifamily ​ — ​ — ​ — ​ 184 Residential real estate ​ 2,641 ​ 3,086 ​ — ​ 2,554 Commercial and industrial ​ 345 ​ 586 ​ — ​ 426 Consumer: ​ ​ ​ ​ ​ ​ Indirect automobile ​ 397 ​ 467 ​ — ​ 293 Home equity ​ 346 ​ 351 ​ — ​ 449 Other consumer ​ — ​ — ​ — ​ 21 Total ​ $ 5,673 ​ $ 7,463 ​ $ — ​ $ 7,013 With an allowance recorded: ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ Commercial and industrial ​ $ 21 ​ $ 21 ​ $ 11 ​ $ 30 Consumer: ​ ​ ​ ​ ​ Indirect automobile ​ ​ 593 ​ ​ 613 ​ ​ 135 ​ ​ 591 Other consumer ​ 48 ​ 49 ​ 7 ​ 13 Total ​ $ 662 ​ $ 683 ​ $ 153 ​ $ 634 Total: ​ ​ ​ ​ Commercial real estate: ​ ​ ​ ​ Non-residential ​ $ 1,944 ​ $ 2,973 ​ $ — ​ $ 3,086 Multifamily ​ — ​ — ​ — ​ 184 Residential real estate ​ 2,641 ​ 3,086 ​ — ​ 2,554 Commercial and industrial ​ 366 ​ 607 ​ 11 ​ 456 Consumer: ​ ​ ​ ​ Indirect automobile ​ 990 ​ 1,080 ​ 135 ​ 884 Home equity ​ 346 ​ 351 ​ — ​ 449 Other consumer ​ 48 ​ 49 ​ 7 ​ 34 Total ​ $ 6,335 ​ $ 8,146 ​ $ 153 ​ $ 7,647
Schedule of loan balances by segment	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Commercial ​ ​ ​ ​ Real Estate Residential and Industrial Indirect Consumer Totals ​ Three months ended September 30, 2021 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 4,833 ​ $ 120 ​ $ 759 ​ $ 4,071 ​ $ 343 ​ $ 10,126 Provision for (credit to) loan losses ​ ​ (792) ​ ​ (67) ​ ​ 491 ​ ​ (294) ​ ​ (292) ​ ​ (954) Loans charged-off ​ ​ — ​ ​ — ​ ​ (12) ​ ​ (527) ​ ​ (5) ​ ​ (544) Recoveries ​ — ​ — ​ 1 ​ 390 ​ 15 ​ 406 Ending balance ​ $ 4,041 ​ $ 53 ​ $ 1,239 ​ $ 3,640 ​ $ 61 ​ $ 9,034 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial ​ Indirect ​ Consumer Totals ​ ​ Three months ended September 30, 2020 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,673 ​ $ 125 ​ $ 859 ​ $ 4,779 ​ $ 136 ​ $ 8,572 Provision for loan losses ​ ​ 1,217 ​ ​ 4 ​ ​ 366 ​ ​ 653 ​ ​ 10 ​ ​ 2,250 Loans charged-off ​ ​ — ​ ​ — ​ ​ (88) ​ ​ (499) ​ ​ (3) ​ ​ (590) Recoveries ​ 4 ​ — ​ (3) ​ 325 ​ 5 ​ 331 Ending balance ​ $ 3,894 ​ $ 129 ​ $ 1,134 ​ $ 5,258 ​ $ 148 ​ $ 10,563 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial Indirect Consumer Totals ​ ​ Nine months ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 5,354 ​ $ 117 ​ $ 1,050 ​ $ 4,974 ​ $ 138 ​ $ 11,633 (Credit to) provision for loan losses ​ ​ (1,313) ​ ​ (67) ​ ​ 113 ​ ​ (803) ​ ​ (101) ​ ​ (2,171) Loans charged-off ​ ​ — ​ ​ — ​ ​ (13) ​ ​ (1,644) ​ ​ (14) ​ ​ (1,671) Recoveries ​ — ​ 3 ​ 89 ​ 1,113 ​ 38 ​ 1,243 Ending balance ​ $ 4,041 ​ $ 53 ​ $ 1,239 ​ $ 3,640 ​ $ 61 ​ $ 9,034 Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ — ​ $ — ​ $ — ​ $ 68 ​ $ — ​ $ 68 Loans not deemed impaired ​ $ 4,041 ​ $ 53 ​ $ 1,239 ​ $ 3,572 ​ $ 61 ​ $ 8,966 Loan receivables: ​ ​ ​ ​ ​ ​ Ending balance ​ $ 283,155 ​ $ 35,830 ​ $ 117,755 ​ $ 377,116 ​ $ 20,493 ​ $ 834,349 Ending balance: ​ ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ 2,088 ​ $ 2,483 ​ $ 884 ​ $ 477 ​ $ 271 ​ $ 6,203 Loans not deemed impaired ​ $ 281,067 ​ $ 33,347 ​ $ 116,871 ​ $ 376,639 ​ $ 20,222 ​ $ 828,146 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial ​ Indirect ​ Consumer Totals ​ ​ Nine months ended September 30, 2020 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 2,009 ​ $ 99 ​ $ 603 ​ $ 3,117 ​ $ 126 ​ $ 5,954 Provision for loan losses ​ ​ 1,881 ​ ​ 30 ​ ​ 651 ​ ​ 3,114 ​ ​ 29 ​ ​ 5,705 Loans charged-off ​ ​ — ​ ​ — ​ ​ (127) ​ ​ (1,688) ​ ​ (21) ​ ​ (1,836) Recoveries ​ 4 ​ — ​ 7 ​ 715 ​ 14 ​ 740 Ending balance ​ $ 3,894 ​ $ 129 ​ $ 1,134 ​ $ 5,258 ​ $ 148 ​ $ 10,563 Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ — ​ $ — ​ $ 24 ​ $ 204 ​ $ 2 ​ $ 230 Loans not deemed impaired ​ $ 3,894 ​ $ 129 ​ $ 1,110 ​ $ 5,054 ​ $ 146 ​ $ 10,333 Loan receivables: ​ ​ ​ ​ ​ ​ Ending balance ​ $ 284,862 ​ $ 40,605 ​ $ 170,663 ​ $ 372,863 ​ $ 24,147 ​ $ 893,140 Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ 1,291 ​ $ 2,684 ​ $ 422 ​ $ 900 ​ $ 561 ​ $ 5,858 Loans not deemed impaired ​ $ 283,571 ​ $ 37,921 ​ $ 170,241 ​ $ 371,963 ​ $ 23,586 ​ $ 887,282 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Residential ​ Commercial ​ ​ ​ ​ ​ ​ ​ Real Estate Real Estate and Industrial Indirect Consumer Totals ​ ​ December 31, 2020 Allowance for loan losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ending balance: ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ — ​ $ — ​ $ 11 ​ $ 135 ​ $ 7 ​ $ 153 Loans not deemed impaired ​ $ 5,354 ​ $ 117 ​ $ 1,039 ​ $ 4,839 ​ $ 131 ​ $ 11,480 Loan receivables: ​ ​ ​ ​ ​ ​ Ending balance ​ $ 284,120 ​ $ 39,239 ​ $ 154,016 ​ $ 376,260 ​ $ 22,981 ​ $ 876,616 Ending balance: ​ ​ ​ ​ ​ ​ ​ Loans deemed impaired ​ $ 1,944 ​ $ 2,641 ​ $ 366 ​ $ 990 ​ $ 394 ​ $ 6,335 Loans not deemed impaired ​ $ 282,176 ​ $ 36,598 ​ $ 153,650 ​ $ 375,270 ​ $ 22,587 ​ $ 870,281

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets
Schedule of changes in the carrying value of goodwill	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months ​ Year Ended ​ ​ ​ Ended September 30, ​ December 31, ​ 2021 2020 Beginning balance ​ ​ $ 1,410 ​ $ 1,410 Acquisition activity ​ ​ 825 ​ — ​ ​ ​ ​ Ending balance ​ ​ $ 2,235 ​ $ 1,410 ​ ​ ​ ​ Accumulated impairment ​ ​ $ 1,116 ​ $ 1,116
Schedule of changes in the carrying value of customer list intangible	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months ​ Year Ended ​ ​ Ended September 30, ​ December 31, ​ 2021 2020 Beginning balance ​ $ 199 ​ $ 241 Acquisition activity ​ ​ 330 ​ ​ — Amortization ​ (69) ​ (42) ​ ​ ​ Ending balance ​ $ 460 ​ $ 199 Accumulated amortization and impairment ​ $ 817 ​ $ 748
Schedule of future amortization expense for amortizable intangible assets	​ ​ ​ ​ ​ 2021 $ 26 2022 ​ 99 2023 ​ 88 2024 ​ 80 2025 ​ 61 Thereafter ​ ​ 106 Total ​ $ 460

Premises and Equipment (Tables)

Premises and Equipment (Tables)	9 Months Ended
	Sep. 30, 2021
Premises and Equipment
Schedule of premises and equipment	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Land ​ $ 3,732 ​ $ 3,732 ​ Buildings and improvements ​ 26,651 ​ 26,431 ​ Furniture, fixtures and equipment ​ 13,762 ​ 13,042 ​ Construction in process ​ 589 ​ 93 ​ Total ​ 44,734 ​ 43,298 ​ Less accumulated depreciation ​ (25,570) ​ (24,459) ​ Net ​ $ 19,164 ​ $ 18,839 ​

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2021
Deposits
Schedule of deposits	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 Non-interest bearing demand deposits ​ $ 316,521 ​ $ 244,344 Interest bearing accounts: ​ ​ NOW ​ 156,330 ​ 141,580 Savings ​ 178,913 ​ 157,414 Money market ​ 267,261 ​ 185,383 Time certificates of deposit ​ 168,362 ​ 200,643 Total interest bearing accounts ​ 770,866 ​ 685,020 Total deposits ​ $ 1,087,387 ​ $ 929,364
Schedule of contractual maturities of time certificates of deposit	​ ​ ​ ​ ​ ​ ​ September 30, ​ 2021 Within 1 year ​ $ 137,305 1 – 2 years ​ 12,740 2 – 3 years ​ 8,754 3 – 4 years ​ 8,537 4 – 5 years ​ 1,026 Total ​ $ 168,362

Long-Term Debt and FHLB Stock (

Long-Term Debt and FHLB Stock (Tables)	9 Months Ended
	Sep. 30, 2021
Long-Term Debt and FHLB Stock
Schedule of outstanding principal amounts and related terms of FHLBNY borrowings	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Term Principal Maturity Rate ​ Due in one year Long term 3 year amortizing ​ $ 2,571 ​ May 16, 2022 2.49 % ​ $ 2,571 ​ — 3 year bullet ​ ​ 10,000 ​ May 16, 2022 ​ 2.44 % ​ ​ 10,000 ​ ​ — 3 year amortizing ​ ​ 7,574 ​ February 28, 2023 ​ 1.32 % ​ ​ 5,033 ​ ​ 2,541 Total ​ $ 20,145 ​ Weighted Average Rate 2.03 % ​ $ 17,604 ​ $ 2,541

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2021
Employee Benefits
Schedule of plan's funded status and amounts recognized in consolidated statement of financial condition	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Projected and accumulated benefit obligation ​ $ (23,367) ​ $ (23,964) ​ Plan assets at fair value ​ 22,199 ​ 22,634 ​ Funded status included in accrued expenses and other liabilities ​ $ (1,168) ​ $ (1,330) ​
Schedule of net periodic pension cost and amounts recognized in other comprehensive income	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine months ended September 30, ​ ​ 2021 2020 ​ Interest cost ​ $ 442 ​ $ 502 ​ Expected return on plan assets ​ (708) ​ (639) ​ Amortization of unrecognized loss ​ 269 ​ 214 ​ Net periodic cost (benefit) ​ $ 3 ​ $ 77 ​
Schedule of fair value of pension plan assets, by fair value hierarchy	The fair value of the Company’s pension plan assets, by fair value hierarchy, are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, 2021 ​ Level 1 Level 2 Level 3 Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment in separate accounts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed income ​ $ 15,560 ​ $ — ​ $ — ​ $ 15,560 Equity ​ 6,639 ​ — ​ — ​ 6,639 Total assets at fair value ​ $ 22,199 ​ $ — ​ $ — ​ $ 22,199 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 ​ Level 1 Level 2 Level 3 Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investment in separate accounts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fixed income ​ $ 15,189 ​ $ — ​ $ — ​ $ 15,189 Equity ​ 6,206 ​ — ​ — ​ 6,206 Other ​ ​ 1,239 ​ ​ — ​ ​ — ​ ​ 1,239 Total assets at fair value ​ $ 22,634 ​ $ — ​ $ — ​ $ 22,634
Schedule of employee stock ownership plan	​ ​ ​ ​ ​ ​ ​ ​ Nine months ended ​ Year ended ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 Allocated ​ 43,642 21,821 Committed to be allocated ​ 16,362 21,821 Unallocated ​ 376,421 392,783 Paid out to participants ​ (68) ​ (68) Total shares ​ 436,357 436,357
Summary of options	A summary of options under the 2020 EIP as of September 30, 2021 is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted - ​ Weighted-Average ​ ​ Number of ​ Average ​ Remaining Contractual ​ ​ Shares ​ Exercise Price ​ Term (in Years) Options outstanding at beginning of year ​ 448,385 ​ $ 6.61 ​ 9.66 Options granted ​ - ​ ​ - ​ - Options exercised ​ (5,455) ​ ​ 6.57 ​ - Forfeited ​ - ​ ​ - ​ - Options outstanding at September 30, 2021 ​ 442,930 ​ $ 6.62 ​ 8.92 Options exercisable at September 30, 2021 ​ 138,997 ​ ​ 6.57 ​ 8.91
Summary of Company's restricted stock activity	The following table summarizes the Company’s restricted stock activity for the nine months ended September 30, 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ Number ​ ​ Grant Date ​ ​ of Shares ​ ​ Fair Value per Share Non-vested restricted stock at beginning of year ​ 169,769 ​ $ 6.57 Granted ​ - ​ - Vested ​ (56,582) ​ 6.57 Forfeited ​ - ​ - Non-vested restricted stock at September 30, 2021 ​ 113,187 ​ $ 6.57

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Leases
Schedule of future minimum payments for operating leases	​ ​ ​ ​ ​ Years ending December 31: ​ ​ 2021 ​ $ 198 2022 ​ 754 2023 ​ 732 2024 ​ 729 2025 ​ 743 Thereafter ​ 5,822 Total future minimum lease payments ​ ​ 8,978 Amounts representing interest ​ ​ (1,392) Present Value of Net Future Minimum Lease Payments ​ $ 7,586

Commitments and Contingencies_2

Commitments and Contingencies and Derivatives (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies and Derivatives
Schedule of contract amounts represent off-balance sheet credit risk	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 2020 ​ Commitments to extend credit summarized as follows: ​ ​ ​ ​ ​ ​ ​ Future loan commitments ​ $ 12,236 ​ $ 14,356 ​ Undisbursed construction loans ​ 2,693 ​ 3,493 ​ Undisbursed home equity lines of credit ​ 10,834 ​ 10,686 ​ Undisbursed commercial and other line of credit ​ 72,089 ​ 63,911 ​ Standby letters of credit ​ 3,050 ​ 5,681 ​ Total ​ $ 100,902 ​ $ 98,127 ​
Schedule of information regarding derivatives	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ Notational amount ​ $ 9,018 ​ ​ $ 1,875 ​ Fair value ​ $ 143 ​ ​ $ 41 ​ Weighted average pay rates ​ ​ 3.51 % ​ ​ 3.10 % Weighted average receive rates ​ ​ 2.29 % ​ ​ 2.22 % Weighted average maturity (in years) ​ ​ 9.61 ​ ​ ​ 9.92 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of Contracts ​ ​ 5 ​ ​ ​ 1 ​

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2021
Regulatory Matters
Schedule of actual capital amounts and ratios	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ To be Well Capitalized under ​ ​ ​ ​ ​ ​ ​ For Capital Adequacy ​ Prompt Corrective Action ​ ​ Actual ​ Purposes ​ Provisions ​ Amount Ratio Amount Ratio Amount Ratio ​ ​ September 30, 2021 Rhinebeck Bank ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total capital (to risk-weighted assets) ​ $ 128,554 14.12 % $ 72,810 8.00 % $ 91,012 10.00 % Tier 1 capital (to risk-weighted assets) ​ 119,520 13.13 % 54,607 6.00 % 72,810 8.00 % Common equity tier one capital (to risk weighted assets) ​ 119,520 13.13 % 40,955 4.50 % 59,158 6.50 % Tier 1 capital (to average assets) ​ 119,520 9.58 % 49,922 4.00 % 62,403 5.00 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Rhinebeck Bank ​ ​ ​ ​ Total capital (to risk-weighted assets) ​ $ 121,604 13.97 % $ 69,614 8.00 % $ 87,018 10.00 % Tier 1 capital (to risk-weighted assets) ​ 110,717 12.72 % 52,211 6.00 % 69,614 8.00 % Common equity tier one capital (to risk weighted assets) ​ 110,717 12.72 % 39,158 4.50 % 56,562 6.50 % Tier 1 capital (to average assets) ​ 110,717 9.95 % 44,529 4.00 % 55,662 5.00 %

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value
Schedule of assets carried at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Significant ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ Balance Assets (Level 1) Inputs (Level 2) Inputs (Level 3) ​ ​ September 30, 2021 Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury securities ​ $ 40,189 ​ $ 40,189 ​ $ — ​ $ — U.S. government agency mortgage-backed securities-residential ​ ​ 156,897 ​ ​ — ​ ​ 156,897 ​ ​ — U.S. government agency securities ​ 26,878 ​ — ​ 26,878 ​ — Municipal securities ​ 7,010 ​ — ​ 6,865 ​ 145 Corporate Bonds ​ ​ 8,775 ​ ​ — ​ ​ 8,775 ​ ​ — Other ​ 640 ​ — ​ 640 ​ — Total available for sale securities ​ ​ 240,389 ​ ​ 40,189 ​ ​ 200,055 ​ ​ 145 Loan level interest rate swaps ​ ​ 143 ​ ​ — ​ ​ 143 ​ ​ — Total assets ​ $ 240,532 ​ $ 40,189 ​ $ 200,198 ​ $ 145 Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loan level interest rate swaps ​ ​ 143 ​ ​ — ​ ​ 143 ​ ​ — Total liabilities ​ $ 143 ​ $ — ​ $ 143 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. government agency mortgage-backed securities – residential ​ $ 89,270 ​ $ — ​ $ 89,270 ​ $ — U.S. government agency securities ​ 7,161 ​ — ​ 7,161 ​ — Municipal securities ​ 1,476 ​ — ​ 1,316 ​ 160 Corporate Bonds ​ ​ 4,446 ​ ​ — ​ ​ 4,446 ​ ​ — Other ​ ​ 580 ​ ​ — ​ 580 ​ — Total available for sale securities ​ ​ 102,933 ​ ​ — ​ ​ 102,773 ​ ​ 160 Loan level interest rate swaps ​ ​ 41 ​ ​ — ​ ​ 41 ​ ​ — Total assets ​ $ 102,974 ​ $ — ​ $ 102,814 ​ $ 160 Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Loan level interest rate swaps ​ ​ 41 ​ ​ — ​ ​ 41 ​ ​ — Total liabilities ​ $ 41 ​ $ — ​ $ 41 ​ $ —
Schedule of assets carried at fair value and measured at fair value on a nonrecurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets ​ Significant ​ Significant ​ ​ ​ ​ ​ for Identical ​ Observable ​ Unobservable ​ Balance Assets (Level 1) Inputs (Level 2) Inputs (Level 3) ​ ​ September 30, 2021 Impaired loans, with specific reserves ​ $ 212 ​ $ — ​ $ — ​ $ 212 Other real estate owned ​ 89 ​ — ​ — ​ 89 Total ​ $ 301 ​ $ — ​ $ — ​ $ 301 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Impaired loans, with specific reserves ​ $ 509 ​ $ — ​ $ — ​ $ 509 Other real estate owned ​ 139 ​ — ​ — ​ 139 Total ​ $ 648 ​ $ — ​ $ — ​ $ 648
Schedule of additional quantitative information about assets measured at fair value on a nonrecurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Quantitative Information About Level 3 Fair Value Measurements ​ ​ Fair Value ​ Valuation ​ Unobservable ​ Range ​ Estimate Techniques Input (Weighted Average) ​ ​ September 30, 2021 Impaired loans ​ $ 212 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ ​ ​ ​ ​ ​ Appraisal adjustments (2) 0% to 20% Other real estate owned ​ 89 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ ​ ​ ​ Appraisal adjustments (2) 0% to 20% ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2020 Impaired loans ​ $ 509 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ ​ ​ ​ ​ ​ Appraisal adjustments (2) 0% to 20% Other real estate owned ​ 139 Appraisal of collateral (1) Liquidation expenses (3) 0% to 6% ​ ​ Appraisal adjustments (2) 0% to 20% (1) Fair value is generally through independent appraisals of the underlying collateral that generally include various level 3 inputs which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraised value. (3) Estimated costs to sell.
Schedule of carrying value and fair values of the financial instruments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ ​ ​ 2021 ​ 2020 ​ ​ Carrying Value Fair Value Carrying Value Fair Value ​ Financial Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and due from banks (Level 1) ​ $ 114,587 ​ $ 114,587 ​ $ 93,485 ​ $ 93,485 ​ Available for sale securities (Level 1) ​ 40,189 ​ 40,189 ​ — ​ — ​ Available for sale securities (Level 2) ​ 200,055 ​ 200,055 ​ 102,773 ​ 102,773 ​ Available for sale securities (Level 3) ​ 145 ​ 145 ​ 160 ​ 160 ​ Loan level interest rate swaps (Level 2) ​ ​ 143 ​ ​ 143 ​ ​ 41 ​ ​ 41 ​ FHLB stock (Level 2) ​ 1,417 ​ 1,417 ​ 2,787 ​ 2,787 ​ Loans, net (Level 3) ​ 833,841 ​ 830,263 ​ 873,813 ​ 876,699 ​ Mortgage servicing rights (Level 3) ​ 2,639 ​ 4,486 ​ 2,390 ​ 3,569 ​ Financial Liabilities: ​ ​ ​ ​ ​ Deposits (Level 2) ​ 1,087,387 ​ 1,077,152 ​ 929,364 ​ 941,460 ​ Mortgagors' escrow accounts (Level 2) ​ 4,264 ​ 4,269 ​ 8,494 ​ 8,501 ​ FHLB advances (Level 2) ​ 20,145 ​ 20,349 ​ 50,674 ​ 51,468 ​ Subordinated debt (Level 2) ​ 5,155 ​ 5,155 ​ 5,155 ​ 5,155 ​ Loan level interest rate swaps (Level 2) ​ ​ 143 ​ ​ 143 ​ ​ 41 ​ ​ 41 ​

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Loss.
Schedule of accumulated other comprehensive loss components	The activity in accumulated other comprehensive loss for the three and nine months ended September 30, 2021 and 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated Other Comprehensive Loss (1) ​ ​ ​ ​ ​ Unrealized (losses) ​ ​ ​ ​ ​ ​ ​ ​ gains on ​ ​ ​ ​ ​ Defined Benefit ​ available for sale ​ ​ ​ ​ Pension Plan securities Total Balance at June 30, 2021 ​ $ (4,605) ​ $ (126) ​ $ (4,731) Other comprehensive loss before reclassifications ​ (120) ​ (472) ​ (592) Amounts reclassified from accumulated other comprehensive loss ​ 71 ​ — ​ 71 Period change ​ (49) ​ (472) ​ (521) Balance at September 30, 2021 ​ $ (4,654) ​ $ (598) ​ $ (5,252) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at June 30, 2020 ​ $ (4,663) ​ $ 1,842 ​ $ (2,821) Other comprehensive gain (loss) before reclassifications ​ 637 ​ (431) ​ 206 Amounts reclassified from accumulated other comprehensive loss ​ 56 ​ — ​ 56 Period change ​ 693 ​ (431) ​ 262 Balance at September 30, 2020 ​ $ (3,970) ​ $ 1,411 ​ $ (2,559) (1) All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0%. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated Other Comprehensive Loss (1) ​ ​ ​ ​ ​ Unrealized gains ​ ​ ​ ​ ​ ​ ​ ​ (losses) on ​ ​ ​ ​ ​ Defined Benefit ​ available for sale ​ ​ ​ ​ Pension Plan securities Total Balance at December 31, 2020 ​ $ (4,784) ​ $ 993 ​ $ (3,791) Other comprehensive loss before reclassifications ​ (83) ​ (1,591) ​ (1,674) Amounts reclassified from accumulated other comprehensive loss ​ 213 ​ — ​ 213 Period change ​ 130 ​ (1,591) ​ (1,461) Balance at September 30, 2021 ​ $ (4,654) ​ $ (598) ​ $ (5,252) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at December 31, 2019 ​ $ (3,909) ​ $ (195) ​ $ (4,104) Other comprehensive (loss) gain before reclassifications ​ (230) ​ 1,583 ​ 1,353 Amounts reclassified from accumulated other comprehensive loss ​ 169 ​ 23 ​ 192 Period change ​ (61) ​ 1,606 ​ 1,545 Balance at September 30, 2020 ​ $ (3,970) ​ $ 1,411 ​ $ (2,559) (1) All amounts are net of tax. Related income tax expense or benefit is calculated using an income tax rate of 21.0%.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share
Schedule of earnings per share, basic and diluted	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended September 30, ​ Nine months ended September 30, ​ 2021 2020 ​ 2021 ​ 2020 Net income applicable to common stock ​ $ 2,685 ​ $ 1,150 ​ $ 8,571 ​ $ 3,573 ​ ​ ​ ​ ​ Average number of common shares outstanding ​ 11,153,186 ​ 11,133,290 ​ 11,139,944 ​ 11,133,290 Less: Average unearned ESOP shares ​ 379,148 ​ 400,969 ​ 384,602 ​ 406,423 Average number of common shares outstanding used to calculate basic earnings per common share ​ 10,774,038 ​ 10,732,321 ​ 10,755,342 ​ 10,726,867 Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share ​ ​ 61,444 ​ ​ — ​ ​ 64,311 ​ ​ — Additional common stock equivalents (stock options) used to calculate diluted earnings per share ​ ​ 111,453 ​ ​ — ​ ​ 94,776 ​ ​ — Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share ​ ​ 10,946,935 ​ ​ 10,732,321 ​ ​ 10,914,429 ​ ​ 10,726,867 ​ ​ ​ ​ ​ Earnings per Common share: ​ ​ ​ ​ Basic ​ $ 0.25 ​ $ 0.10 ​ $ 0.80 ​ $ 0.33 Diluted ​ $ 0.25 ​ $ 0.10 ​ $ 0.79 ​ $ 0.33

Nature of Business and Signif_3

Nature of Business and Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2021item
Nature of Business and Significant Accounting Policies
Number of branches	15
Number of representative offices	2

Acquisition (Narrative) (Detail

Acquisition (Narrative) (Details) - ConnectOne Bank $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)	Mar. 12, 2021USD ($)item
Business Acquisition [Line Items]
Deposits		$ 33,863
Expenses related to the acquisition	$ 71
Monroe and Warwick, New York
Business Acquisition [Line Items]
Number of branch acquired | item		2

Acquisition (Schedule of estima

Acquisition (Schedule of estimated fair values of the assets acquired and liabilities assumed) (Details) - USD ($) $ in Thousands	Mar. 12, 2021	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair value of consideration transferred
Total cash received on acquisition		$ 32,767
Liabilities assumed
Goodwill		$ 2,235	$ 1,410	$ 1,410
Useful life of purchased customer accounts		13 years
ConnectOne Bank
Fair value of consideration transferred
Total cash received on acquisition	$ 32,767
Assets acquired
Fixed assets	113
Reimbursed expenses	9
Core deposit intangible	330
Total assets acquired	452
Liabilities assumed
Deposits	33,863
Mark-to-market adjustment	181
Total liabilities assumed	34,044
Net liabilities acquired	(33,592)
Goodwill	$ 825
ConnectOne Bank | Core deposit
Liabilities assumed
Useful life of purchased customer accounts	13 years

Investment Securities (Schedule

Investment Securities (Schedule of amortized cost, gross unrealized gains and losses and fair values of available for sale securities) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 241,147	$ 101,676
Gross Unrealized Gains		953	1,578
Gross Unrealized Losses		(1,711)	(321)
Fair Value		240,389	102,933
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		40,397
Gross Unrealized Gains		1
Gross Unrealized Losses		(209)
Fair Value		40,189
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		157,595	88,197
Gross Unrealized Gains		706	1,350
Gross Unrealized Losses		(1,404)	(277)
Fair Value		156,897	89,270
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		26,810	7,013
Gross Unrealized Gains		107	148
Gross Unrealized Losses		(39)
Fair Value		26,878	7,161
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	[1]	7,005	1,445
Gross Unrealized Gains	[1]	32	31
Gross Unrealized Losses	[1]	(27)
Fair Value	[1]	7,010	1,476
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		8,700	4,400
Gross Unrealized Gains		107	49
Gross Unrealized Losses		(32)	(3)
Fair Value		8,775	4,446
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		640	621
Gross Unrealized Gains		0
Gross Unrealized Losses		0	(41)
Fair Value		$ 640	$ 580
[1]	The issuers of municipal securities are all within New York State.

Investment Securities (Schedu_2

Investment Securities (Schedule of gross unrealized losses and fair value, securities in continuous unrealized loss position) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	$ 154,569	$ 31,512
Less Than 12 Months Unrealized Losses	(1,487)	(313)
12 Months or Longer Fair Value	12,218	293
12 Months or Longer Unrealized Losses	(224)	(8)
Fair Value	166,787	31,805
Unrealized Losses	(1,711)	(321)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	30,169
Less Than 12 Months Unrealized Losses	(209)
Fair Value	30,169
Unrealized Losses	(209)
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	103,868	30,243
Less Than 12 Months Unrealized Losses	(1,186)	(269)
12 Months or Longer Fair Value	11,974	293
12 Months or Longer Unrealized Losses	(218)	(8)
Fair Value	115,842	30,536
Unrealized Losses	(1,404)	(277)
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	14,719
Less Than 12 Months Unrealized Losses	(39)
Fair Value	14,719
Unrealized Losses	(39)
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	2,339
Less Than 12 Months Unrealized Losses	(27)
Fair Value	2,339
Unrealized Losses	(27)
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	3,474	747
Less Than 12 Months Unrealized Losses	(26)	(3)
12 Months or Longer Fair Value	244
12 Months or Longer Unrealized Losses	(6)
Fair Value	3,718	747
Unrealized Losses	$ (32)	(3)
Other
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value		522
Less Than 12 Months Unrealized Losses		(41)
Fair Value		522
Unrealized Losses		$ (41)

Investment Securities (Schedu_3

Investment Securities (Schedule of maturities of debt securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost
Within 1 year	$ 12,916	$ 102
After 1 but within 5 years	48,948	2,155
After 5 but within 10 years	20,903	9,946
After 10 years	145	655
Total Maturities	82,912	12,858
Mortgage-backed securities	157,595	88,197
Other	640	621
Amortized Cost	241,147	101,676
Fair Value
Within 1 year	12,915	102
After 1 but within 5 years	48,832	2,155
After 5 but within 10 years	20,961	10,162
After 10 years	145	664
Total Maturities	82,853	13,083
Mortgage-backed securities	156,896	89,270
Other	640	580
Fair Value	$ 240,389	$ 102,933

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)security	Dec. 31, 2020USD ($)
Investment Securities
Number of individual available-for-sale securities with unrealized losses | security	119
Unrealized Losses	$ 1,711	$ 321
Aggregate percentage of depreciation	1.03%
Available for sale securities pledged to secure Federal Home Loan Bank of New York ("FHLBNY") borrowings	$ 11,679	18,123
Available for sale securities pledged to secure Federal Reserve Bank of New York ("FRBNY") borrowings	1,053	$ 1,059
Proceeds from the sale of available for sale securities and calls	2,000
Gains on sales of investment securities	0
Losses on sales of investment securities	$ 0

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses (Schedule of summary loan portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 834,349		$ 876,616	$ 893,140
Net deferred loan costs	8,526		8,830
Allowance for loan losses	(9,034)	$ (10,126)	(11,633)	(10,563)	$ (8,572)	$ (5,954)
Total net loans	833,841		873,813
Indirect automobile
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	377,116		376,260	372,863
Allowance for loan losses	(3,640)	(4,071)	(4,974)	(5,258)	(4,779)	(3,117)
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	283,155		284,120	284,862
Allowance for loan losses	(4,041)	(4,833)	(5,354)	(3,894)	(2,673)	(2,009)
Commercial real estate | Construction
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	5,682		5,392
Commercial real estate | Non-residential
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	236,240		248,349
Commercial real estate | Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	41,233		30,379
Residential
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	35,830		39,239	40,605
Allowance for loan losses	(53)	(120)	(117)	(129)	(125)	(99)
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	117,755		154,016	170,663
Allowance for loan losses	(1,239)	(759)	(1,050)	(1,134)	(859)	(603)
Commercial and industrial | Small Business Administration Paycheck Protection Program
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	44,080		75,366
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	20,493		22,981	24,147
Allowance for loan losses	(61)	$ (343)	(138)	$ (148)	$ (136)	$ (126)
Consumer | Indirect automobile
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	377,116		376,260
Consumer | Home equity
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	12,253		14,165
Consumer | Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 8,240		$ 8,816

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses (Schedule of loans by risk rating and portfolio segment) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 834,349	$ 876,616	$ 893,140
Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	817,624	858,751
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	10,236	10,863
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,489	7,002
Indirect automobile
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	377,116	376,260	372,863
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	283,155	284,120	284,862
Commercial real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,682	5,392
Commercial real estate | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,682	5,392
Commercial real estate | Non-residential
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	236,240	248,349
Commercial real estate | Non-residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	228,816	240,778
Commercial real estate | Non-residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,189	5,468
Commercial real estate | Non-residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,235	2,103
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41,233	30,379
Commercial real estate | Multifamily | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41,233	30,379
Residential
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	35,830	39,239	40,605
Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	33,347	36,597
Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,483	2,642
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	117,755	154,016	170,663
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	111,685	147,748
Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,047	5,395
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,023	873
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	20,493	22,981	$ 24,147
Consumer | Indirect automobile
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	377,116	376,260
Consumer | Indirect automobile | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	376,639	375,270
Consumer | Indirect automobile | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	477	990
Consumer | Home equity
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	12,253	14,165
Consumer | Home equity | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	12,029	13,819
Consumer | Home equity | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	224	346
Consumer | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	8,240	8,816
Consumer | Other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	8,193	8,768
Consumer | Other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 47	$ 48

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses (Schedule of classes of the loan portfolio by the aging categories of performing loans and nonaccrual loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	$ 834,349	$ 876,616	$ 893,140
Nonaccrual	6,203	6,335
Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	822,025	858,608
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	5,364	11,616
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,299	1,853
Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4,661	4,539
Indirect automobile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	377,116	376,260	372,863
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	283,155	284,120	284,862
Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	5,682	5,392
Commercial real estate | Construction | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	5,682	5,392
Commercial real estate | Non-residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	236,240	248,349
Nonaccrual	2,088	1,944
Commercial real estate | Non-residential | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	232,909	244,387
Commercial real estate | Non-residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current		1,985
Commercial real estate | Non-residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,243	33
Commercial real estate | Non-residential | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,088	1,944
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	41,233	30,379
Commercial real estate | Multifamily | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	41,233	30,379
Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	35,830	39,239	40,605
Nonaccrual	2,483	2,641
Residential | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	34,561	36,581
Residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	58	1,351
Residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	0	138
Residential | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,211	1,169
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	117,755	154,016	170,663
Nonaccrual	884	366
Commercial and industrial | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	116,418	151,771
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	409	1,551
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	186	511
Commercial and industrial | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	742	183
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	20,493	22,981	$ 24,147
Consumer | Indirect automobile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	377,116	376,260
Nonaccrual	477	990
Consumer | Indirect automobile | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	371,303	367,929
Consumer | Indirect automobile | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4,576	6,321
Consumer | Indirect automobile | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	790	1,063
Consumer | Indirect automobile | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	447	947
Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	12,253	14,165
Nonaccrual	224	346
Consumer | Home equity | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	11,868	13,506
Consumer | Home equity | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	214	310
Consumer | Home equity | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	45	101
Consumer | Home equity | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	126	248
Consumer | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total gross loans	8,240	8,816
Nonaccrual	47	48
Consumer | Other consumer | Financial Asset, Not Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	8,051	8,663
Consumer | Other consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	107	98
Consumer | Other consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	35	7
Consumer | Other consumer | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 47	$ 48

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses (Schedule of information to impaired loans by loan portfolio class) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
With no related allowance recorded:
Recorded Investment	$ 5,923	$ 5,673
Unpaid Principal Balance	7,859	7,463
Average Recorded Investment	5,873	7,013
With an allowance recorded:
Recorded Investment	280	662
Unpaid Principal Balance	287	683
Related Allowance	68	153
Average Recorded Investment	502	634
Total:
Recorded Investment	6,203	6,335
Unpaid Principal Balance	8,146	8,146
Related Allowance	68	153
Average Recorded Investment	6,375	7,647
Commercial real estate | Non-residential
With no related allowance recorded:
Recorded Investment	2,088	1,944
Unpaid Principal Balance	3,148	2,973
Average Recorded Investment	2,096	3,086
Total:
Recorded Investment	2,088	1,944
Unpaid Principal Balance	3,148	2,973
Average Recorded Investment	2,096	3,086
Commercial real estate | Multifamily
With no related allowance recorded:
Average Recorded Investment		184
Total:
Average Recorded Investment		184
Residential
With no related allowance recorded:
Recorded Investment	2,483	2,641
Unpaid Principal Balance	3,025	3,086
Average Recorded Investment	2,561	2,554
Total:
Recorded Investment	2,483	2,641
Unpaid Principal Balance	3,025	3,086
Average Recorded Investment	2,561	2,554
Commercial and industrial
With no related allowance recorded:
Recorded Investment	884	345
Unpaid Principal Balance	1,156	586
Average Recorded Investment	589	426
With an allowance recorded:
Recorded Investment		21
Unpaid Principal Balance		21
Related Allowance		11
Average Recorded Investment	153	30
Total:
Recorded Investment	884	366
Unpaid Principal Balance	1,156	607
Related Allowance		11
Average Recorded Investment	742	456
Consumer | Indirect automobile
With no related allowance recorded:
Recorded Investment	197	397
Unpaid Principal Balance	257	467
Average Recorded Investment	232	293
With an allowance recorded:
Recorded Investment	280	593
Unpaid Principal Balance	287	613
Related Allowance	68	135
Average Recorded Investment	337	591
Total:
Recorded Investment	477	990
Unpaid Principal Balance	544	1,080
Related Allowance	68	135
Average Recorded Investment	569	884
Consumer | Home equity
With no related allowance recorded:
Recorded Investment	224	346
Unpaid Principal Balance	225	351
Average Recorded Investment	357	449
Total:
Recorded Investment	224	346
Unpaid Principal Balance	225	351
Average Recorded Investment	357	449
Consumer | Other consumer
With no related allowance recorded:
Recorded Investment	47
Unpaid Principal Balance	48
Average Recorded Investment	38	21
With an allowance recorded:
Recorded Investment		48
Unpaid Principal Balance		49
Related Allowance		7
Average Recorded Investment	12	13
Total:
Recorded Investment	47	48
Unpaid Principal Balance	48	49
Related Allowance		7
Average Recorded Investment	$ 50	$ 34

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses (Schedule of loan balances by segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Allowance for loan losses:
Beginning balance	$ 10,126	$ 8,572	$ 11,633	$ 5,954
Provision for (credit to) loan losses	(954)	2,250	(2,171)	5,705
Loans charged-off	(544)	(590)	(1,671)	(1,836)
Recoveries	406	331	1,243	740
Ending balance	9,034	10,563	9,034	10,563
Allowance for loan losses:
Ending balance: Individually evaluated for impairment	68	230	68	230	$ 153
Ending balance: Collectively evaluated for impairment	8,966	10,333	8,966	10,333	11,480
Loan receivables:
Ending balance	834,349	893,140	834,349	893,140	876,616
Ending balance: Individually evaluated for impairment	6,203	5,858	6,203	5,858	6,335
Ending balance: Collectively evaluated for impairment	828,146	887,282	828,146	887,282	870,281
Indirect automobile
Allowance for loan losses:
Beginning balance	4,071	4,779	4,974	3,117
Provision for (credit to) loan losses	(294)	653	(803)	3,114
Loans charged-off	(527)	(499)	(1,644)	(1,688)
Recoveries	390	325	1,113	715
Ending balance	3,640	5,258	3,640	5,258
Allowance for loan losses:
Ending balance: Individually evaluated for impairment	68	204	68	204	135
Ending balance: Collectively evaluated for impairment	3,572	5,054	3,572	5,054	4,839
Loan receivables:
Ending balance	377,116	372,863	377,116	372,863	376,260
Ending balance: Individually evaluated for impairment	477	900	477	900	990
Ending balance: Collectively evaluated for impairment	376,639	371,963	376,639	371,963	375,270
Commercial real estate
Allowance for loan losses:
Beginning balance	4,833	2,673	5,354	2,009
Provision for (credit to) loan losses	(792)	1,217	(1,313)	1,881
Recoveries		4		4
Ending balance	4,041	3,894	4,041	3,894
Allowance for loan losses:
Ending balance: Collectively evaluated for impairment	4,041	3,894	4,041	3,894	5,354
Loan receivables:
Ending balance	283,155	284,862	283,155	284,862	284,120
Ending balance: Individually evaluated for impairment	2,088	1,291	2,088	1,291	1,944
Ending balance: Collectively evaluated for impairment	281,067	283,571	281,067	283,571	282,176
Residential
Allowance for loan losses:
Beginning balance	120	125	117	99
Provision for (credit to) loan losses	(67)	4	(67)	30
Recoveries			3
Ending balance	53	129	53	129
Allowance for loan losses:
Ending balance: Collectively evaluated for impairment	53	129	53	129	117
Loan receivables:
Ending balance	35,830	40,605	35,830	40,605	39,239
Ending balance: Individually evaluated for impairment	2,483	2,684	2,483	2,684	2,641
Ending balance: Collectively evaluated for impairment	33,347	37,921	33,347	37,921	36,598
Commercial and industrial
Allowance for loan losses:
Beginning balance	759	859	1,050	603
Provision for (credit to) loan losses	491	366	113	651
Loans charged-off	(12)	(88)	(13)	(127)
Recoveries	1		89	7
Adjustments		(3)
Ending balance	1,239	1,134	1,239	1,134
Allowance for loan losses:
Ending balance: Individually evaluated for impairment		24		24	11
Ending balance: Collectively evaluated for impairment	1,239	1,110	1,239	1,110	1,039
Loan receivables:
Ending balance	117,755	170,663	117,755	170,663	154,016
Ending balance: Individually evaluated for impairment	884	422	884	422	366
Ending balance: Collectively evaluated for impairment	116,871	170,241	116,871	170,241	153,650
Consumer
Allowance for loan losses:
Beginning balance	343	136	138	126
Provision for (credit to) loan losses	(292)	10	(101)	29
Loans charged-off	(5)	(3)	(14)	(21)
Recoveries	15	5	38	14
Ending balance	61	148	61	148
Allowance for loan losses:
Ending balance: Individually evaluated for impairment		2		2	7
Ending balance: Collectively evaluated for impairment	61	146	61	146	131
Loan receivables:
Ending balance	20,493	24,147	20,493	24,147	22,981
Ending balance: Individually evaluated for impairment	271	561	271	561	394
Ending balance: Collectively evaluated for impairment	20,222	$ 23,586	20,222	$ 23,586	22,587
Consumer | Indirect automobile
Loan receivables:
Ending balance	$ 377,116		$ 377,116		$ 376,260

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses (Narrative) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)loan	Dec. 31, 2020USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loan	$ 1,468	$ 1,571
Number of loans default | loan	3	3
Number of new loans default | loan	0	0
Balance of capitalized servicing rights	$ 2,639	$ 2,390
Aggregate balances of loans serviced to participants	4,050	4,291
Aggregate balances of loans serviced to third party	313,037	300,700
Loans and Leases Receivable, Impaired, Commitment to Lend	0	0
Amount of consumer mortgages and loans secured by residential real estate properties in process of foreclosure	946	636
Mortgage Servicing Rights (MSR) Impairment (Recovery)	0	0
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balances of loans held for sale	$ 2,912	$ 2,718

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Schedule of changes in the carrying value of goodwill) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Goodwill and Intangible Assets
Beginning balance	$ 1,410	$ 1,410
Acquisition activity	825
Ending balance	2,235	1,410
Accumulated impairment	1,116	1,116
Impairment loss on goodwill	$ 0	$ 0

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Schedule of changes in the carrying value of customer list and core deposit intangibles) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			$ 199	$ 241	$ 241
Acquisition activity			330
Amortization	$ (27)	$ (11)	(69)	$ (32)	(42)
Ending balance	460		460		199
Accumulated amortization and impairment	$ 817		$ 817		$ 748

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Goodwill and Intangible Assets
Amortization of Intangible Assets	$ 27	$ 11	$ 69	$ 32	$ 42
Useful life of purchased customer accounts			13 years

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Schedule of future amortization expense for amortizable intangible assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets
2021	$ 26
2022	99
2023	88
2024	80
2025	61
Thereafter	106
Total	$ 460	$ 199	$ 241

Premises and Equipment (Schedul

Premises and Equipment (Schedule of premises and equipment) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total	$ 44,734	$ 43,298
Less accumulated depreciation	(25,570)	(24,459)
Net	19,164	18,839
Land
Property, Plant and Equipment [Line Items]
Total	3,732	3,732
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total	26,651	26,431
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Total	13,762	13,042
Construction in progress
Property, Plant and Equipment [Line Items]
Total	$ 589	$ 93

Deposits (Schedule of deposits)

Deposits (Schedule of deposits) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deposits
Non-interest bearing demand deposits	$ 316,521	$ 244,344
Interest bearing accounts:
NOW	156,330	141,580
Savings	178,913	157,414
Money market	267,261	185,383
Time certificates of deposit	168,362	200,643
Total interest bearing accounts	770,866	685,020
Total deposits	$ 1,087,387	$ 929,364

Deposits (Schedule of contractu

Deposits (Schedule of contractual maturities of time certificates of deposit) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deposits
Within 1 year	$ 137,305
1 - 2 years	12,740
2 - 3 years	8,754
3 - 4 years	8,537
4 - 5 years	1,026
Total	$ 168,362	$ 200,643

Deposits (Narrative) (Details)

Deposits (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Deposits [Line Items]
Reciprocal deposits	$ 19,568	$ 30,012
Time certificates of deposit in denominations of $250 or greater	$ 28,252	$ 34,565
Maximum
Deposits [Line Items]
Maturity terms	3 years
Minimum
Deposits [Line Items]
Maturity terms	1 year

Long-Term Debt and FHLB Stock_2

Long-Term Debt and FHLB Stock (Schedule of outstanding principal amounts and related terms of FHLBNY borrowings) (Details) - Federal Home Loan Bank of New York ("FHLBNY") $ in Thousands	Sep. 30, 2021USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 20,145
Rate	2.03%
Due in one year	$ 17,604
Long term	2,541
3 year amortizing on May 16, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 2,571
Rate	2.49%
Due in one year	$ 2,571
Long term	0
3 year bullet on May 16, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 10,000
Rate	2.44%
Due in one year	$ 10,000
Long term	0
3 year amortizing February 28, 2023
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Principal amount	$ 7,574
Rate	1.32%
Due in one year	$ 5,033
Long term	$ 2,541

Long-Term Debt and FHLB Stock_3

Long-Term Debt and FHLB Stock (Narrative) (Details) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)subsidiary$ / shares	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)$ / shares	Dec. 31, 2005USD ($)$ / sharesshares
Long-Term Debt And Federal Home Loan Bank [Line Items]
Advances from Federal Home Loan Banks	$ 20,145		$ 50,674
Number Of Wholly Owned Subsidiaries | subsidiary	1
Common stock, par value (in dollars per share) | $ / shares	$ 0.01		$ 0.01
Funding received	$ (15,030)	$ (2,223)
Zions Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	10,000		$ 10,000
Line of credit facility, maximum amount outstanding during period	$ 0		$ 0
Subordinated Debt.
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest rate, variable rate basis	3-month LIBOR
Interest rate	2.13%		2.21%
Subordinated debt securities	$ 5,155
Stated maturity date	May 23, 2035
Subordinated Debt. | LIBOR
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest LIBOR rate	2.00%
Subordinated Debt. | RSB Capital Trust I
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest rate, variable rate basis	3-month LIBOR
Trust term	30 years
Subordinated Debt. | RSB Capital Trust I | LIBOR
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest LIBOR rate	2.00%
Subordinated Debt. | Private placement | RSB Capital Trust I
Long-Term Debt And Federal Home Loan Bank [Line Items]
Number of preferred securities issued				$ 5,000
Common stock issued | shares				155
Common stock, par value (in dollars per share) | $ / shares				$ 1
Federal Home Loan Bank of New York ("FHLBNY")
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	$ 631,297		$ 564,330
Amount of pledged assets	170,587		175,011
Impairment Related To Federal Home Loan Stock	$ 0		$ 0

Employee Benefits (Schedule of

Employee Benefits (Schedule of plan's funded status and amounts recognized in consolidated statement of financial condition) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Employee Benefits
Projected and accumulated benefit obligation	$ (23,367)	$ (23,964)
Plan assets at fair value	22,199	22,634
Funded status included in accrued expenses and other liabilities	$ (1,168)	$ (1,330)

Employee Benefits (Schedule o_2

Employee Benefits (Schedule of net periodic pension (benefit) cost and amounts recognized in other comprehensive income (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Employee Benefits
Interest cost	$ 442	$ 502
Expected return on plan assets	(708)	(639)
Amortization of unrecognized loss	269	214
Net periodic cost (benefit)	$ 3	$ 77

Employee Benefits (Schedule o_3

Employee Benefits (Schedule of fair value of pension plan assets, by fair value hierarchy) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	$ 22,199	$ 22,634
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	22,199	22,634
Defined Benefit Pension Plan | Investment in separate accounts fixed income
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	15,560	15,189
Defined Benefit Pension Plan | Investment in separate accounts equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	6,639	6,206
Defined Benefit Pension Plan | Investment in separate accounts other
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		1,239
Level 1 | Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	22,199	22,634
Level 1 | Defined Benefit Pension Plan | Investment in separate accounts fixed income
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	15,560	15,189
Level 1 | Defined Benefit Pension Plan | Investment in separate accounts equity
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	$ 6,639	6,206
Level 1 | Defined Benefit Pension Plan | Investment in separate accounts other
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value		$ 1,239

Employee Benefits (Various Bene

Employee Benefits (Various Benefits - Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)fund	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Schedule Of Employee Benefits [Line Items]
Percentage of internal revenue contribution			25.00%
Percentage of internal revenue service limitations			6.00%
Number of investment funds | fund			10
Number of equity funds | fund			7
Number of fixed income funds | fund			3
Accrued expenses and other liabilities	$ 21,550		$ 21,550		$ 18,643
Non-interest expense	9,138	$ 7,432	25,967	$ 21,496
Employer contribution in defined contribution plan			798	732
Postretirement Life Insurance [Member]
Schedule Of Employee Benefits [Line Items]
Liability related to these postretirement benefits	1,419		1,419		1,387
Postemployment benefit expense			32	43
Postemployment Retirement Benefits [Member]
Schedule Of Employee Benefits [Line Items]
Non-interest expense			56	65
Liability related to these postretirement benefits	1,977		1,977		2,148
Officer [Member] | Deferred Compensation, Share-based Payments [Member]
Schedule Of Employee Benefits [Line Items]
Accrued expenses and other liabilities	1,359		1,359		1,312
Non-interest expense			392	419
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member] | Director [Member]
Schedule Of Employee Benefits [Line Items]
Accrued expenses and other liabilities	$ 2,749		2,749		$ 2,483
Non-interest expense			$ 106	$ 131
Maximum | Postemployment Retirement Benefits [Member]
Schedule Of Employee Benefits [Line Items]
Post retirement benefit period			20 years
Maximum | Officer [Member] | Deferred Compensation, Share-based Payments [Member]
Schedule Of Employee Benefits [Line Items]
Terms of services			5 years
Minimum | Postemployment Retirement Benefits [Member]
Schedule Of Employee Benefits [Line Items]
Post retirement benefit period			15 years
Minimum | Officer [Member] | Deferred Compensation, Share-based Payments [Member]
Schedule Of Employee Benefits [Line Items]
Terms of services			1 year

Employee Benefits (Schedule o_4

Employee Benefits (Schedule of employee stock ownership plan) (Details) - shares	Sep. 30, 2021	Dec. 31, 2020
Employee Benefits
Allocated	43,642	21,821
Committed to be allocated	16,362	21,821
Unallocated	376,421	392,783
Paid out to participants	(68)	(68)
Total shares	436,357	436,357

Employee Benefits (Employee Sto

Employee Benefits (Employee Stock Ownership Plan (ESOP) Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 01, 2021	Jan. 16, 2019	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Number of share purchase under ESOP			436,357		436,357
Committed to be allocated			16,362		21,821
Compensation expense			$ 168	$ 129
Employee Stock Ownership Plan (ESOP)
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Number of share purchase under ESOP		436,425
Common stock price per share		$ 10
Terms of repurchase share under ESOP		20 years
Interest rate	3.25%
Balance of ESOP loan			$ 4,087
Committed to be allocated			21,821
Fair value of unallocated shares			$ 4,103
Compensation expense			$ 168	$ 129

Employee Benefits (Share-Based

Employee Benefits (Share-Based Compensation Plan Narrative) (Details) - 2020 EIP - USD ($) $ in Thousands	May 26, 2020	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	763,743
Vesting period	3 years
Maximum term	10 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	545,531
Percentage of shares of common stock issued	4.90%
Available for future grants		97,146
Aggregate intrinsic value of options		$ 1,898
Period for Recognition		1 year 10 months 28 days
Unrecognized compensation cost related to the nonvested restricted stock awards granted		$ 476
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	218,212
Percentage of shares of common stock issued	1.96%
Available for future grants		48,443
Period for Recognition		1 year 10 months 24 days
Unrecognized compensation cost related to the nonvested restricted stock awards granted		$ 706
Allocated share-based compensation expense		$ 464

Employee Benefits (Summary of o

Employee Benefits (Summary of options) (Details) - 2020 EIP - Stock options - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Shares
Options outstanding at beginning of year	448,385
Options exercised	(5,455)
Options outstanding at September 30, 2021	442,930	448,385
Options exercisable at September 30, 2021	138,997
Weighted - Average Exercise Price
Beginning of year	$ 6.61
Exercised	6.57
End of period	6.62	$ 6.61
Exercisable	$ 6.57
Weighted-Average Contractual Term
Weighted-Average Contractual Term, Outstanding	8 years 11 months 1 day	9 years 7 months 28 days
Weighted-Average Contractual Term, Exercisable	8 years 10 months 28 days

Employee Benefits (Summary of C

Employee Benefits (Summary of Company's restricted stock activity) (Details) - Restricted stock	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Number of shares
Balance at beginning of period (in shares) | shares	169,769
Vested (in shares) | shares	(56,582)
Balance at end of period (in shares) | shares	113,187
Weighted-Average Grant Date Fair Value per Share
Balance at beginning of period (in dollars per share) | $ / shares	$ 6.57
Vested (in dollars per share) | $ / shares	6.57
Balance at end of period (in dollars per share) | $ / shares	$ 6.57

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)item	Dec. 31, 2020USD ($)
Leases
Number of leased branch offices | item	8
Number of leased administrative offices | item	2
Weighted average remaining life of the lease terms	12 years 8 months 12 days
Weighted average discount rate	2.56%
Operating lease costs	$ 539
Deferred rent liability	152	$ 176
Operating lease right-of-use asset	$ 7,586
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets.
Operating lease liability	$ 7,586
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities and Other Liabilities

Leases - Future minimum payment

Leases - Future minimum payments for operating leases (Details) $ in Thousands	Sep. 30, 2021USD ($)
Leases
2021	$ 198
2022	754
2023	732
2024	729
2025	743
Thereafter	5,822
Total future minimum lease payments	8,978
Amounts representing interest	(1,392)
Present Value of Net Future Minimum Lease Payments	$ 7,586

Commitments and Contingencies_3

Commitments and Contingencies and Derivatives (Schedule of contract amounts represent off-balance sheet credit risk) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	$ 100,902	$ 98,127
Future loan commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	12,236	14,356
Construction
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	2,693	3,493
Undisbursed home equity lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	10,834	10,686
Undisbursed commercial and other line of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	72,089	63,911
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	$ 3,050	$ 5,681

Commitments and Contingencies_4

Commitments and Contingencies and Derivatives (Schedule of information regarding derivatives) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)contract	Dec. 31, 2020USD ($)contract	Sep. 30, 2020USD ($)
Derivative [Line Items]
Accrued interest receivable	$ 3,743	$ 3,819
Interest rate swap
Derivative [Line Items]
Notional amount	9,018	1,875
Fair value	$ 143	$ 41
Weighted average pay rates	3.51%	3.10%
Weighted average receive rates	2.29%	2.22%
Weighted average maturity (in years)	9 years 7 months 9 days	9 years 11 months 1 day
Number of Contracts | contract	5	1
Interest rate swap | Other assets
Derivative [Line Items]
Accrued interest receivable	$ 9
Interest rate swap | Other liabilities
Derivative [Line Items]
Accrued interest payable			$ 0

Regulatory Matters (Schedule of

Regulatory Matters (Schedule of actual capital amounts and ratios) (Details) - Rhinebeck Bank $ in Thousands	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets) Actual Amount	$ 128,554	$ 121,604
Total capital (to risk-weighted assets) Actual Ratio	14.12	13.97
Total capital (to risk-weighted assets) For Capital Adequacy Purposes Amount	$ 72,810	$ 69,614
Total capital (to risk-weighted assets) For Capital Adequacy Purposes Ratio	8	8
Total capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 91,012	$ 87,018
Total capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	10	10
Tier 1 capital (to risk-weighted assets) Actual Amount	$ 119,520	$ 110,717
Tier 1 capital (to risk-weighted assets) Actual Ratio	13.13	12.72
Tier 1 capital (to risk-weighted assets) For Capital Adequacy Purposes Amount	$ 54,607	$ 52,211
Tier 1 capital (to risk-weighted assets) For Capital Adequacy Purposes Ratio	6	6
Tier 1 capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 72,810	$ 69,614
Tier 1 capital (to risk-weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	8	8
Common equity tier one capital (to risk weighted assets) Actual Amount	$ 119,520	$ 110,717
Common equity tier one capital (to risk weighted assets) Actual Ratio	13.13	12.72
Common equity tier one capital (to risk weighted assets) For Capital Adequacy Purposes Amount	$ 40,955	$ 39,158
Common equity tier one capital (to risk weighted assets) For Capital Adequacy Purposes Ratio	4.50%	4.50%
Common equity tier one capital (to risk weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 59,158	$ 56,562
Common equity tier one capital (to risk weighted assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 capital (to average assets) Actual Amount	$ 119,520	$ 110,717
Tier 1 capital (to average assets) Actual Ratio	9.58	9.95
Tier 1 capital (to average assets) For Capital Adequacy Purposes Amount	$ 49,922	$ 44,529
Tier 1 capital (to average assets) For Capital Adequacy Purposes Ratio	4	4
Tier 1 capital (to average assets) To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 62,403	$ 55,662
Tier 1 capital (to average assets) To be Well Capitalized under Prompt Corrective Action Provisions Ratio	5	5

Fair Value (Schedule of assets

Fair Value (Schedule of assets carried at fair value on a recurring basis) (Details) - Recurring basis - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 240,532	$ 102,974
Total liabilities	143	41
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	40,189
U.S. government agency mortgage-backed securities-residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	156,897	89,270
U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	26,878	7,161
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	7,010	1,476
Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	8,775	4,446
Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	640	580
Unrealized gains (losses) on available for sale securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	240,389	102,933
Loan level interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	143	41
Total liabilities	143	41
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	40,189
Level 1 | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	40,189
Level 1 | Unrealized gains (losses) on available for sale securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	40,189
Significant Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	200,198	102,814
Total liabilities	143	41
Significant Observable Inputs (Level 2) | U.S. government agency mortgage-backed securities-residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	156,897	89,270
Significant Observable Inputs (Level 2) | U.S. government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	26,878	7,161
Significant Observable Inputs (Level 2) | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	6,865	1,316
Significant Observable Inputs (Level 2) | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	8,775	4,446
Significant Observable Inputs (Level 2) | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	640	580
Significant Observable Inputs (Level 2) | Unrealized gains (losses) on available for sale securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	200,055	102,773
Significant Observable Inputs (Level 2) | Loan level interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	143	41
Total liabilities	143	41
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	145	160
Significant Unobservable Inputs (Level 3) | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	145	160
Significant Unobservable Inputs (Level 3) | Unrealized gains (losses) on available for sale securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 145	$ 160

Fair Value (Schedule of asset_2

Fair Value (Schedule of assets carried at fair value and measured at fair value on a nonrecurring basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, recorded investments	$ 280	$ 662
Related Allowance	68	153
Nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	301	648
Nonrecurring basis | Impaired loans, with specific reserves
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	212	509
Impaired loans, recorded investments	280	662
Related Allowance	68	153
Nonrecurring basis | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	89	139
Nonrecurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	0	0
Nonrecurring basis | Level 1 | Impaired loans, with specific reserves
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	0	0
Nonrecurring basis | Level 1 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	0	0
Nonrecurring basis | Significant Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	0	0
Nonrecurring basis | Significant Observable Inputs (Level 2) | Impaired loans, with specific reserves
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	0	0
Nonrecurring basis | Significant Observable Inputs (Level 2) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	0	0
Nonrecurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	301	648
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Impaired loans, with specific reserves
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	212	509
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	212	509
Nonrecurring basis | Significant Unobservable Inputs (Level 3) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held at fair value	$ 89	$ 139

Fair Value (Schedule of additio

Fair Value (Schedule of additional quantitative information about assets measured at fair value on a nonrecurring basis) (Details) - Nonrecurring basis $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets held at fair value	$ 301	$ 648
Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets held at fair value	89	139
Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets held at fair value	$ 301	$ 648
Impaired Loans, Valuation Technique [Extensible List]	Appraisal of collateral	Appraisal of collateral
Other Real Estate Owned, Valuation Technique [Extensible List]	Appraisal of collateral	Appraisal of collateral
Significant Unobservable Inputs (Level 3) | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets held at fair value	$ 212	$ 509
Significant Unobservable Inputs (Level 3) | Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets held at fair value	$ 89	$ 139
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Liquidation expenses | Minimum | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, unobservable input (in percent)	0	0
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Liquidation expenses | Minimum | Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, unobservable input (in percent)	0	0
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Liquidation expenses | Maximum | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, unobservable input (in percent)	0.06	0.06
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Liquidation expenses | Maximum | Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, unobservable input (in percent)	0.06	0.06
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Appraisal adjustments | Minimum | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, unobservable input (in percent)	0	0
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Appraisal adjustments | Minimum | Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, unobservable input (in percent)	0	0
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Appraisal adjustments | Maximum | Impaired loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, unobservable input (in percent)	0.20	0.20
Significant Unobservable Inputs (Level 3) | Appraisal of collateral | Appraisal adjustments | Maximum | Other real estate owned
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, unobservable input (in percent)	0.20	0.20

Fair Value (Schedule of carryin

Fair Value (Schedule of carrying value and fair values of the financial instruments) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Level 1 | Carrying Value
Financial Assets:
Cash and due from banks (Level 1)	$ 114,587	$ 93,485
Available for sale securities (Level 1, 2 and 3)	40,189
Level 1 | Fair Value
Financial Assets:
Cash and due from banks (Level 1)	114,587	93,485
Available for sale securities (Level 1, 2 and 3)	40,189
Significant Observable Inputs (Level 2) | Carrying Value
Financial Assets:
Available for sale securities (Level 1, 2 and 3)	200,055	102,773
Loan level interest rate swaps (Level 2)	143	41
FHLB stock (Level 2)	1,417	2,787
Financial Liabilities:
Deposits (Level 2)	1,087,387	929,364
Mortgagors escrow accounts (Level 2)	4,264	8,494
FHLB advances (Level 2)	20,145	50,674
Subordinated debt (Level 2)	5,155	5,155
Loan level interest rate swaps (Level 2)	143	41
Significant Observable Inputs (Level 2) | Fair Value
Financial Assets:
Available for sale securities (Level 1, 2 and 3)	200,055	102,773
Loan level interest rate swaps (Level 2)	143	41
FHLB stock (Level 2)	1,417	2,787
Financial Liabilities:
Deposits (Level 2)	1,077,152	941,460
Mortgagors escrow accounts (Level 2)	4,269	8,501
FHLB advances (Level 2)	20,349	51,468
Subordinated debt (Level 2)	5,155	5,155
Loan level interest rate swaps (Level 2)	143	41
Significant Unobservable Inputs (Level 3) | Carrying Value
Financial Assets:
Available for sale securities (Level 1, 2 and 3)	145	160
Loans, net (Level 3)	833,841	873,813
Mortgage servicing rights (Level 3)	2,639	2,390
Significant Unobservable Inputs (Level 3) | Fair Value
Financial Assets:
Available for sale securities (Level 1, 2 and 3)	145	160
Loans, net (Level 3)	830,263	876,699
Mortgage servicing rights (Level 3)	$ 4,486	$ 3,569

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Schedule of accumulated other comprehensive loss activity) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 121,862	$ 113,680	$ 116,499	$ 109,882
Balance	$ 124,204	$ 115,190	$ 124,204	$ 115,190
Income tax rate	21.00%	21.00%	21.00%	21.00%
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (4,731)	$ (2,821)	$ (3,791)	$ (4,104)
Other comprehensive (loss) gain before reclassifications	(592)	206	(1,674)	1,353
Amounts reclassified from accumulated other comprehensive loss	71	56	213	192
Period change	(521)	262	(1,461)	1,545
Balance	(5,252)	(2,559)	(5,252)	(2,559)
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(4,605)	(4,663)	(4,784)	(3,909)
Other comprehensive (loss) gain before reclassifications	(120)	637	(83)	(230)
Amounts reclassified from accumulated other comprehensive loss	71	56	213	169
Period change	(49)	693	130	(61)
Balance	(4,654)	(3,970)	(4,654)	(3,970)
Unrealized Losses on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(126)	1,842	993	(195)
Other comprehensive (loss) gain before reclassifications	(472)	(431)	(1,591)	1,583
Amounts reclassified from accumulated other comprehensive loss				23
Period change	(472)	(431)	(1,591)	1,606
Balance	$ (598)	$ 1,411	$ (598)	$ 1,411

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income applicable to common stock	$ 2,685	$ 2,565	$ 3,321	$ 1,150	$ 1,348	$ 1,075	$ 8,571	$ 3,573
Average number of common shares outstanding	11,153,186			11,133,290			11,139,944	11,133,290
Less: Average unearned ESOP shares	379,148			400,969			384,602	406,423
Average number of common shares outstanding used to calculate basic earnings per common share	10,774,038			10,732,321			10,755,342	10,726,867
Additional common stock equivalents used to calculate diluted earnings per share				0				0
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share	10,946,935			10,732,321			10,914,429	10,726,867
Earnings per Common share:
Basic (in dollars per share)	$ 0.25			$ 0.10			$ 0.80	$ 0.33
Diluted (in dollars per share)	$ 0.25			$ 0.10			$ 0.79	$ 0.33
Non vested Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Additional common stock equivalents used to calculate diluted earnings per share	61,444						64,311
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Additional common stock equivalents used to calculate diluted earnings per share	111,453						94,776