Arrow Financial (AROW) 10-Q 9 Nov 23 2023 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 27, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	0-12507
Entity Registrant Name	ARROW FINANCIAL CORPORATION
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	22-2448962
Entity Address, Address Line One	250 Glen Street
Entity Address, City or Town	Glens Falls
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	12801
City Area Code	518
Local Phone Number	745-1000
Title of 12(b) Security	Common Stock, Par Value $1.00 per share
Trading Symbol	AROW
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		17,055,266
Entity Central Index Key	0000717538
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
ASSETS
Cash and Due From Banks	$ 39,778	$ 31,886	$ 44,872
Interest-Bearing Deposits at Banks	254,961	32,774	328,557
Investment Securities:
Available-for-Sale at Fair Value	519,240	573,495	575,054
Held-to-Maturity (Fair Value of $134,811 at September 30, 2023; $171,623 at December 31, 2022; and $175,800 at September 30, 2022)	140,577	175,364	182,178
Equity Securities	1,960	2,174	2,126
FHLB and Federal Reserve Bank Stock	5,110	6,064	4,720
Loans	3,138,617	2,983,207	2,924,794
Allowance for Credit Losses	(31,112)	(29,952)	(29,232)
Net Loans	3,107,505	2,953,255	2,895,562
Premises and Equipment, Net	60,311	56,491	54,015
Goodwill	21,873	21,873	21,873
Other Intangible Assets, Net	1,205	1,500	1,604
Other Assets	120,391	114,633	122,217
Total Assets	4,272,911	3,969,509	4,232,778
LIABILITIES
Noninterest-Bearing Deposits	798,392	836,871	910,221
Interest-Bearing Checking Accounts	920,250	997,694	1,113,850
Savings Deposits	1,496,193	1,454,364	1,584,373
Time Deposits over $250,000	167,614	76,224	59,059
Other Time Deposits	284,036	133,211	127,602
Total Deposits	3,666,485	3,498,364	3,795,105
Borrowings	174,300	54,800	25,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Finance Leases	5,080	5,119	5,131
Other Liabilities	47,032	37,688	41,992
Total Liabilities	3,912,897	3,615,971	3,887,228
STOCKHOLDERS’ EQUITY
Preferred Stock, $1 Par Value and 1,000,000 Shares Authorized at September 30, 2023, December 31, 2022 and September 30, 2022	0	0	0
Common Stock, $1 Par Value; 30,000,000 Shares Authorized (22,066,559 Shares Issued at September 30, 2023 and 21,423,992 Shares Issued at December 31, 2022 and September 30, 2022)	22,067	21,424	21,424
Additional Paid-in Capital	412,397	400,270	399,461
Retained Earnings	62,647	65,401	57,778
Accumulated Other Comprehensive Loss	(52,584)	(49,655)	(49,070)
Treasury Stock, at Cost (5,017,063 Shares at September 30, 2023; 4,872,355 Shares at December 31, 2022 and 4,900,975 Shares at September 30, 2022)	(84,513)	(83,902)	(84,043)
Total Stockholders’ Equity	360,014	353,538	345,550
Total Liabilities and Stockholders’ Equity	$ 4,272,911	$ 3,969,509	$ 4,232,778
Common Stock, shares issued (in shares)	22,066,559	21,423,992	21,423,992

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity securities, at fair value	$ 134,811	$ 171,623	$ 175,800
STOCKHOLDERS’ EQUITY
Preferred Stock, par value (in dollars per share)	$ 1	$ 1	$ 1
Preferred Stock, shares authorized (in shares)	1,000,000	1,000,000	1,000,000
Common Stock, par value (in dollars per share)	$ 1	$ 1	$ 1
Common Stock, shares authorized (in shares)	30,000,000	30,000,000	30,000,000
Common Stock, shares issued (in shares)	22,066,559	21,423,992	21,423,992
Treasury Stock (in shares)	5,017,063	4,872,355	4,900,975

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
INTEREST AND DIVIDEND INCOME
Interest and Fees on Loans		$ 36,699	$ 29,618	$ 103,203	$ 82,263
Interest on Deposits at Banks		1,805	1,201	3,958	1,826
Interest and Dividends on Investment Securities:
Fully Taxable		2,924	2,603	8,823	7,236
Exempt from Federal Taxes		689	785	2,256	2,422
Total Interest and Dividend Income		42,117	34,207	118,240	93,747
INTEREST EXPENSE
Interest-Bearing Checking Accounts		1,156	267	2,346	629
Savings Deposits		9,729	2,469	23,830	3,778
Time Deposits over $250,000		1,466	89	3,159	143
Other Time Deposits		2,051	150	3,721	370
Borrowings		2,143	110	5,309	405
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts		173	173	513	513
Interest on Financing Leases		46	48	143	145
Total Interest Expense		16,764	3,306	39,021	5,983
NET INTEREST INCOME		25,353	30,901	79,219	87,764
Provision for Credit Losses		354	1,715	2,856	3,389
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES		24,999	29,186	76,363	84,375
NON-INTEREST INCOME
Insurance Commissions		1,695	1,650	4,775	4,783
Net Gain (Loss) on Securities		71	95	(214)	379
Net Gain on Sales of Loans		21	18	25	80
Other Operating Income		1,124	652	1,893	2,121
Total Non-Interest Income		8,050	7,827	21,633	23,733
NON-INTEREST EXPENSE
Salaries and Employee Benefits		11,988	12,427	35,974	35,400
Occupancy Expenses, Net		1,517	1,521	4,728	4,721
Technology and Equipment Expense		4,371	4,049	13,150	11,802
FDIC Assessments		515	295	1,478	893
Other Operating Expense		5,088	3,156	14,528	7,922
Total Non-Interest Expense		23,479	21,448	69,858	60,738
INCOME BEFORE PROVISION FOR INCOME TAXES		9,570	15,565	28,138	47,370
Provision for Income Taxes		1,827	3,402	5,786	10,658
NET INCOME		$ 7,743	$ 12,163	$ 22,352	$ 36,712
Average Shares Outstanding:
Basic (in shares)	[1]	17,050	17,007	17,049	17,001
Diluted (in shares)	[1]	17,050	17,054	17,049	17,050
Per Common Share:
Basic Earnings (in dollars per share)		$ 0.46	$ 0.72	$ 1.31	$ 2.16
Diluted Earnings (in dollars per share)		$ 0.46	$ 0.72	$ 1.31	$ 2.15
Income From Fiduciary Activities
NON-INTEREST INCOME
Revenue from contract with customer		$ 2,378	$ 2,341	$ 7,081	$ 7,454
Fees for Other Services to Customers
NON-INTEREST INCOME
Revenue from contract with customer		$ 2,761	$ 3,071	$ 8,073	$ 8,916
[1] 2022 Share and Per Share Amounts have been restated for the September 26, 2023 3% stock dividend.

Consolidated Statements of In_2

Consolidated Statements of Income (Parenthetical)	Sep. 30, 2023	Sep. 26, 2023	Sep. 30, 2022
Income Statement [Abstract]
Stock dividend, percent	300%	3%	300%

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 7,743	$ 12,163	$ 22,352	$ 36,712
Other Comprehensive Income (Loss), Net of Tax:
Net Unrealized Securities Holding Loss Arising During the Period	(5,786)	(20,801)	(3,536)	(52,808)
Net Unrealized Gain on Cash Flow Hedge Agreements	625	778	91	2,781
Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense	181	55	491	42
Amortization of Net Retirement Plan Actuarial (Gain) Loss	(30)	420	(90)	441
Amortization of Net Retirement Plan Prior Service Cost	39	42	115	127
Other Comprehensive Loss	(4,971)	(19,506)	(2,929)	(49,417)
Comprehensive Income (Loss)	$ 2,772	$ (7,343)	$ 19,423	$ (12,705)

Consolidated Statements of Chan

Consolidated Statements of Changes In Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Stockholders' equity, beginning balance at Dec. 31, 2021		$ 371,186	$ 20,800	$ 377,996	$ 54,078	$ 347	$ (82,035)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		36,712			36,712
Other Comprehensive Income (Loss)		(49,417)				(49,417)
Stock Dividend		0	624	19,408	(20,032)
Cash Dividends Paid	[1]	(12,980)			(12,980)
Stock Options Exercised, Net		366		215			151
Shares Issued Under the Directors' Stock Plan		285		210			75
Shares Issued Under the Employee Stock Purchase Plan		361		261			100
Shares Issued for Dividend Reinvestment Plans		1,420		1,033			387
Stock-Based Compensation Expense		338		338
Purchases of Treasury Stock		(2,721)					(2,721)
Stockholders' equity, ending balance at Sep. 30, 2022		345,550	21,424	399,461	57,778	(49,070)	(84,043)
Stockholders' equity, beginning balance at Jun. 30, 2022		356,498	20,800	379,423	69,980	(29,564)	(84,141)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		12,163
Other Comprehensive Income (Loss)		(19,506)				(19,506)
Stock Dividend		0	624	19,408	(20,032)
Cash Dividends Paid	[1]	(4,333)			(4,333)
Stock Options Exercised, Net		40		27			13
Shares Issued Under the Directors' Stock Plan		92		67			25
Shares Issued Under the Employee Stock Purchase Plan		119		85			34
Shares Issued for Dividend Reinvestment Plans		471		337			134
Stock-Based Compensation Expense		114		114
Purchases of Treasury Stock		(108)					(108)
Stockholders' equity, ending balance at Sep. 30, 2022		345,550	21,424	399,461	57,778	(49,070)	(84,043)
Stockholders' equity, beginning balance at Dec. 31, 2022		353,538	21,424	400,270	65,401	(49,655)	(83,902)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		22,352			22,352
Other Comprehensive Income (Loss)		(2,929)				(2,929)
Stock Dividend		0	643	11,058	(11,701)
Cash Dividends Paid	[1]	(13,405)			(13,405)
Stock Options Exercised, Net		83		50			33
Shares Issued Under the Directors' Stock Plan		114		85			29
Shares Issued Under the Employee Stock Purchase Plan		120		87			33
Shares Issued for Dividend Reinvestment Plans		472		330			142
Stock-Based Compensation Expense		517		517
Purchases of Treasury Stock		(848)					(848)
Stockholders' equity, ending balance at Sep. 30, 2023		360,014	22,067	412,397	62,647	(52,584)	(84,513)
Stockholders' equity, beginning balance at Jun. 30, 2023		361,443	21,424	401,069	71,076	(47,613)	(84,513)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		7,743			7,743
Other Comprehensive Income (Loss)		(4,971)				(4,971)
Stock Dividend		0	643	11,058	(11,701)
Cash Dividends Paid		(4,471)			(4,471)
Stock-Based Compensation Expense		270		270
Stockholders' equity, ending balance at Sep. 30, 2023		$ 360,014	$ 22,067	$ 412,397	$ 62,647	$ (52,584)	$ (84,513)
[1]Cash dividends paid per share have been adjusted for the September 26, 2023 3% stock dividend.

Consolidated Statements of Ch_2

Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Cash Dividends Paid, per Share (in dollars per share)	$ 0.262	$ 0.255	$ 0.786	$ 0.764
Stock Options Exercised (in shares)		1,406	3,772	17,284
Shares Issued Under the Directors' Stock Plan (in shares)		2,923	3,418	8,693
Shares Issued Under Employee Stock Purchase Plan (in shares)		3,855	3,872	11,416
Shares Issued for Dividend Reinvestment Plans (in shares)		14,521	17,753	43,673
Purchase of Treasury Stock (in shares)		3,329	27,395	79,881
Stock dividend, percent	300%	300%	300%	300%
Stock dividends (in shares)	642,567	623,848	642,567	623,848

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities:
Net Income	$ 22,352	$ 36,712
Provision for Credit Losses	2,856	3,389
Depreciation and Amortization	4,962	5,845
Net Loss (Gain) on Securities Transactions	214	(379)
Loans Originated and Held-for-Sale	491	(626)
Proceeds from the Sale of Loans Held-for-Sale	25	1,377
Net Gain on the Sale of Loans	(25)	(80)
Net Loss on the Sale of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	135	136
Contributions to Retirement Benefit Plans	(400)	(478)
Deferred Income Tax Benefit	0	(670)
Shares Issued Under the Directors’ Stock Plan	114	285
Stock-Based Compensation Expense	517	338
Tax Benefit from Exercise of Stock Options	11	22
Net Decrease in Other Assets	(1,338)	(1,076)
Net Decrease in Other Liabilities	6,985	3,415
Net Cash Provided By Operating Activities	36,899	48,210
Cash Flows from Investing Activities:
Proceeds from the Maturities and Calls of Securities Available-for-Sale	48,499	61,620
Purchases of Securities Available-for-Sale	0	(149,674)
Proceeds from the Maturities and Calls of Securities Held-to-Maturity	41,919	24,231
Purchases of Securities Held-to-Maturity	(7,490)	(10,293)
Net Increase in Loans	(159,518)	(260,179)
Proceeds from the Sales of Premises and Equipment, Other Real Estate Owned and Repossessed Assets	1,978	1,055
Purchase of Premises and Equipment	(6,474)	(10,913)
Net Decrease in FHLB and Federal Reserve Bank Stock	954	660
Purchase of Bank Owned Life Insurance	(692)	0
Net Cash Used By Investing Activities	(80,824)	(343,493)
Cash Flows from Financing Activities:
Net Increase in Deposits	168,121	244,608
Finance Lease Payments	(39)	(38)
Other Borrowings - Advances	256,500	0
Other Borrowings - Paydowns	(137,000)	(20,000)
Purchase of Treasury Stock	(848)	(2,721)
Stock Options Exercised, Net	83	366
Shares Issued Under the Employee Stock Purchase Plan	120	361
Shares Issued for Dividend Reinvestment Plans	472	1,420
Cash Dividends Paid	(13,405)	(12,980)
Net Cash Provided By Financing Activities	274,004	211,016
Net Increase (Decrease) in Cash and Cash Equivalents	230,079	(84,267)
Cash and Cash Equivalents at Beginning of Period	64,660	457,696
Cash and Cash Equivalents at End of Period	294,739	373,429
Supplemental Disclosures to Statements of Cash Flow Information:
Interest on Deposits and Borrowings	31,976	5,911
Income Taxes	5,819	8,918
Transfer of Loans to Other Real Estate Owned and Repossessed Assets	$ 1,921	$ 1,217

Risks and Uncertainties

Risks and Uncertainties	9 Months Ended
	Sep. 30, 2023
Risks and Uncertainties [Abstract]
Risks and Uncertainties	RISKS AND UNCERTAINTIES Nature of Operations - Arrow Financial Corporation, a New York corporation ("Arrow," the "Company," "we," or "us"), was incorporated on March 21, 1983 and is registered as a bank holding company within the meaning of the Bank Holding Company Act of 1956. The banking subsidiaries are Glens Falls National Bank and Trust Company ("GFNB") whose main office is located in Glens Falls, New York, and Saratoga National Bank and Trust Company ("SNB") whose main office is located in Saratoga Springs, New York. The two subsidiary banks provide a full range of services to individuals and small to mid-size businesses in northeastern New York State from Albany, the State's capitol, to the Canadian border. Both banks have wealth management departments which provide investment management and administrative services. An active subsidiary of GFNB is Upstate Agency LLC, offering insurance services including property and casualty insurance, group health insurance and individual life insurance products. North Country Investment Advisers, Inc., a registered investment adviser that provides investment advice to our proprietary mutual fund, and Arrow Properties, Inc., a real estate investment trust (REIT), are subsidiaries of GFNB. Arrow also owns directly two subsidiary business trusts, organized in 2003 and 2004 to issue trust preferred securities (TRUPs), which are still outstanding. Concentrations of Credit - With the exception of some indirect auto lending, Arrow's loans are primarily with borrowers in upstate New York. Although the loan portfolios of the subsidiary banks are well diversified, tourism has a substantial impact on the northeastern New York economy. The commitments to extend credit are fairly consistent with the distribution of loans presented in Note 5, " Loans, " generally have the same credit risk and are subject to normal credit policies. Generally, the loans are secured by assets and are expected to be repaid from cash flow or the sale of selected assets of the borrowers. Arrow evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by Arrow upon extension of credit, is based upon Management's credit evaluation of the counterparty. The nature of the collateral varies with the type of loan and may include: residential real estate, cash and securities, inventory, accounts receivable, property, plant and equipment, income producing commercial properties and automobiles. Liquidity - The objective of effective liquidity management is to ensure that Arrow has the ability to raise cash when needed at a reasonable cost. This includes the capability of meeting expected and unexpected obligations to Arrow's customers at any time. Given the uncertain nature of customer demands and the need to maximize earnings, Arrow must have available reasonably priced sources of funds, both on- and off-balance sheet, that can be accessed quickly in times of need. Arrow’s liquidity position should provide the Company with the necessary flexibility to address any unexpected near-term disruptions such as reduced cash flows from the investment and loan portfolio, unexpected deposit runoff, or increased loan originations. Arrow's primary sources of available liquidity are overnight investments in federal funds sold, interest-bearing bank balances at the Federal Reserve Bank of New York, advances from the Federal Reserve Bank of New York Bank Term Funding Program ("BTFP") and cash flow from investment securities and loans.

Accounting Policies

Accounting Policies	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Accounting Policies	ACCOUNTING POLICIES In the opinion of the management of Arrow, the accompanying unaudited interim consolidated financial statements contain all of the adjustments necessary to present fairly the financial position as of September 30, 2023, December 31, 2022 and September 30, 2022; the results of operations for the three and nine month periods ended September 30, 2023 and 2022; the consolidated statements of comprehensive income for the three and nine month periods ended September 30, 2023 and 2022; the changes in stockholders' equity for the three and nine month periods ended September 30, 2023 and 2022; and the cash flows for the nine month periods ended September 30, 2023 and 2022. All such adjustments are of a normal recurring nature. The unaudited interim consolidated financial statements should be read in conjunction with the audited annual consolidated financial statements of Arrow for the year ended December 31, 2022 included in Arrow's Annual Report on Form 10-K for the year ended December 31, 2022 (the "2022 Form 10-K"). Management’s Use of Estimates The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. Management utilized estimates and assumptions in its evaluation of potential impairment of Arrow's right-of-use lease assets, goodwill and intangible assets. Our most significant estimate is the allowance for credit losses. Other estimates include the fair value of financial instruments, evaluation of pension and other post-retirement liabilities, an analysis of a need for a valuation allowance for deferred tax assets and a reserve for unfunded loan commitments recorded as an other liability. Actual results could differ from those estimates. A material estimate that is particularly susceptible to significant change in the near term is the allowance for credit losses. In connection with the determination of the allowance for credit losses management obtains economic forecasts from reliable sources and appraisals for properties. The allowance for credit losses is management’s best estimate of the life of loan losses as of the balance sheet date. While management uses available information to recognize losses on loans, future adjustments to the allowance for credit losses may be necessary based on changes in economic conditions. Allowance for Credit Losses – Loans - Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (CECL) approach requires an estimate of the credit losses expected over the life of a loan (or pool of loans). It replaces the incurred loss approach’s threshold that required the recognition of a credit loss when it was probable that a loss event was incurred. The allowance for credit losses is a valuation account that is deducted from, or added to, the loans’ amortized cost basis to present the net lifetime amount expected to be collected on the loans. Credit losses are charged off against the allowance when management believes a loan balance is confirmed to be uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged off and expected to be charged off. Management estimates the allowance using relevant available information from internal and external sources related to past events, current conditions, and a reasonable and supportable single economic forecast. Historical credit loss experience provides the basis for the estimation of expected credit losses. Arrow's historical loss experience was supplemented with peer information when there was insufficient loss data for Arrow. Peer selection was based on a review of institutions with comparable loss experience as well as loan yield, bank size, portfolio concentration and geography. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in credit concentrations, delinquency level, collateral values and underwriting standards as well as changes in economic conditions or other relevant factors. Management judgment is required at each point in the measurement process. Portfolio segment is defined as the level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses. Upon adoption of CECL, management revised the manner in which loans were pooled for similar risk characteristics. Management developed portfolio segments for estimating loss based on type of borrower and collateral as follows: Commercial Loans Commercial Real Estate Loans Consumer Loans Residential Loans Further details related to loan portfolio segments is included in Note 5 Loans. Historical credit loss experience for both Arrow and segment-specific peers provides the basis for the estimation of expected credit losses. Arrow utilized regression analyses of peer data, of which Arrow is included, where observed credit losses and selected economic factors were utilized to determine suitable loss drivers for modeling lifetime probability of default (PD) rates. Arrow uses the discounted cash flow (DCF) method to estimate expected credit losses for the commercial, commercial real estate, and residential segments. For each of these loan segments, Arrow generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, PD, and segment-specific loss given default (LGD) risk factors. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data and adjusted, if necessary, based on the reasonable and supportable forecast of economic conditions. For the loan segments utilizing the DCF method, (commercial, commercial real estate, and residential) management utilizes externally developed economic forecast of the following economic factors as loss drivers: national unemployment, gross domestic product and Case-Shiller U.S. National Home Price Index ("HPI"). The economic forecast is applied over a reasonable and supportable forecast period. Arrow utilizes a six quarter reasonable and supportable forecast period with an eight quarter reversion to the historic mean on a straight-line basis. The combination of adjustments for credit expectations (default and loss) and timing expectations (prepayment, curtailment, and time to recovery) produces an expected cash flow stream at the instrument level. Instrument effective yield is calculated, net of the impacts of prepayment assumptions, and the instrument expected cash flows are then discounted at that effective yield to produce an instrument-level net present value (NPV) of expected cash flows. An allowance for credit loss is established for the difference between the instrument’s NPV and amortized cost basis. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring (TDR) will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by Arrow. Arrow uses the vintage analysis method to estimate expected credit losses for the consumer loan segment. The vintage method was selected since the loans within the consumer loan segment are homogeneous, not just by risk characteristic, but by loan structure. Under the vintage analysis method, a loss rate is calculated based on the quarterly net charge-offs to the outstanding loan balance for each vintage year over the lookback period. Once this periodic loss rate is calculated for each quarter in the lookback period, the periodic rates are averaged into the loss rate. The loss rate is then applied to the outstanding loan balances based on the loan's vintage year. Arrow maintains, over the life of the loan, the loss curve by vintage year. If estimated losses computed by the vintage method need to be adjusted based on current conditions and the reasonable and supportable economic forecast, these adjustments would be incorporated over a six quarter reasonable and supportable forecast period, reverting to historical losses using a straight-line method over an eight quarter period. Based on current conditions and the reasonable and supportable economic forecast, no adjustment to the loss rate for each vintage is currently required. The vintage and DCF models also consider the need to qualitatively adjust expected loss estimates for information not already captured in the quantitative loss estimation process. Qualitative considerations include limitations inherent in the quantitative model; trends experienced in nonperforming and delinquent loans; changes in value of underlying collateral; changes in lending policies and procedures; nature and composition of loans; portfolio concentrations that may affect loss experience across one or more components or the portfolio; the experience, ability and depth of lending management and staff; Arrow's credit review system; and the effect of external factors such as competition, legal and regulatory requirements. These qualitative factor adjustments may increase or decrease Arrow's estimate of expected credit losses so that the allowance for credit loss is reflective of the estimate of lifetime losses that exist in the loan portfolio at the balance sheet date. All loans not included in the vintage analysis method that exceed $250,000 which are on nonaccrual, are evaluated on an individual basis. For collateral dependent financial assets where Arrow has determined that foreclosure of the collateral is probable, or where the borrower is experiencing financial difficulty and Arrow expects repayment of the financial asset to be provided substantially through the operation or sale of the collateral, Arrow has elected a practical expedient to measure the allowance for credit loss as the difference between the fair value of the collateral less cost to sell, and the amortized cost basis of the asset as of the measurement date. In the event the repayment of a collateral dependent financial asset is expected to be provided substantially through the operating of the collateral, Arrow will use fair value of the collateral at the reporting date when recording the net carrying amount of the asset and determining the allowance for credit losses. When repayment is expected to be from the sale of the collateral, expected credit losses are calculated as the amount by which the amortized cost basis of the financial asset exceeds the fair value of the underlying collateral less estimated cost to sell. The allowance for credit losses may be zero if the fair value of the collateral at the measurement date exceeds the amortized cost basis of the financial asset. ASU No. 2022-02, “Troubled Debt Restructurings and Vintage Disclosures” (“ASU 2022-02”), was issued in March 2022 to provide updates on the accounting treatment for TDRs and related disclosures requirements, as well as modifying the disclosure requirement associated with the existing credit quality indicators “vintage” disclosure. With respect to TDRs, ASU 2022-02 eliminates the recognition and measurement guidance for TDRs under current GAAP and instead requires that Arrow evaluate whether the modification represents a new loan or a continuation of an existing loan, consistent with the current GAAP treatment for other loan modifications. In addition, ASU 2022-02 eliminates existing disclosure requirements on TDRs and replaces with enhanced disclosure requirements related to certain loan modifications made to borrowers experiencing financial difficulty. ASU 2022-02 also provides an update to the existing credit quality indicators “vintage” tabular disclosure requiring current period gross write-offs to be disclosed by year of origination for each loan segment. The provisions of ASU 2022-02 were effective January 1, 2023 and Arrow adopted the provisions on a prospective basis. Historical disclosures on TDRs were removed from this report in accordance with the provisions of this ASU. The adoption of this ASU did not have a material impact on the consolidated financial statements. Estimated Credit Losses on Off-Balance Sheet Credit Exposures Recognized as Other Liabilities - Arrow estimates expected credit losses over the contractual period in which Arrow has exposure to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by Arrow. The allowance for credit losses on off-balance sheet credit exposures recognized in other liabilities, is adjusted as an expense in other non-interest expense. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over their estimated lives. Estimating credit losses on unfunded commitments requires Arrow to consider the following categories of off-balance sheet credit exposure: unfunded commitments to extend credit, unfunded lines of credit, and standby letters of credit. Each of these unfunded commitments is then analyzed for a probability of funding to calculate a probable funding amount. The life of loan loss factor by related portfolio segment from the loan allowance for credit loss calculation is then applied to the probable funding amount to calculate the estimated credit losses on off-balance sheet credit exposures recognized as other liabilities. Accrued Interest Receivable - Upon adoption of CECL on January 1, 2021, Arrow made the following elections regarding accrued interest receivable: (1) presented accrued interest receivable balances separately within the other assets balance sheet line item; (2) excluded interest receivable that is included in amortized cost of financing receivables from related disclosures requirements and (3) continued its policy to write off accrued interest receivable by reversing interest income. For loans, write off typically occurs upon becoming over 90 to 120 days past due and therefore the amount of such write offs are immaterial. Historically, Arrow has not experienced uncollectible accrued interest receivable on investment securities. Allowance for Credit Losses – Held-to-Maturity (HTM) Debt Securities - Arrow's HTM debt securities are also required to utilize the CECL approach to estimate expected credit losses. Management measures expected credit losses on HTM debt securities on a collective basis by major security types that share similar risk characteristics, such as financial asset type and collateral type adjusted for current conditions and reasonable and supportable forecasts. Management classifies the HTM portfolio into the following major security types: U.S. government agency or U.S. government sponsored mortgage-backed and collateralized mortgage obligations securities, and state and municipal debt securities. The mortgage-backed and collateralized mortgage obligations HTM securities are issued by U.S. government entities and agencies. These securities are either explicitly or implicitly guaranteed by the U.S. government as to timely repayment of principal and interest, are highly rated by major rating agencies, and have a long history of no credit losses. Therefore, Arrow did not record a credit loss for these securities. State and municipal bonds carry an investment grade from an accredited ratings agency, primarily with an investment grade rating. In addition, Arrow has a limited amount of New York state local municipal bonds that are not rated. The estimate of expected credit losses on the HTM portfolio is based on the expected cash flows of each individual CUSIP over its contractual life and utilized a municipal loss forecast model for determining PD and LGD rates. Management may exercise discretion to make adjustments based on environmental factors. A calculated expected credit loss for individual securities was determined using the PD and LGD rates. Arrow determined that the expected credit loss on its municipal bond portfolio was de minimis, and therefore, an allowance for credit losses was not recorded. Allowance for Credit Losses – Available-for-Sale (AFS) Debt Securities - The impairment model for AFS debt securities differs from the CECL approach utilized by HTM debt securities since AFS debt securities are measured at fair value rather than amortized cost. For AFS debt securities in an unrealized loss position, Arrow first assesses whether it intends to sell, or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through income. For AFS debt securities that do not meet the aforementioned criteria, in making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, adverse conditions specifically related to the security, failure of the issuer of the debt security to make scheduled interest or principal payments, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. The cash flows are estimated using information relevant to the collectability of the security, including information about past events, current conditions and reasonable and supportable forecasts. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Investments in Federal Reserve Bank ("FRB") and Federal Home Loan Bank ("FHLB") stock are required for membership in those organizations and are carried at cost since there is no market value available. The FHLB New York ("FHLBNY") continues to pay dividends and repurchase stock. As such, the Company has not recognized any impairment on its holdings of FRB and FHLB stock. Cybersecurity Risk Management, Strategy, Governance and Incident Disclosure: In July 2023, the SEC adopted amendments intended to enhance and standardize disclosures related to cybersecurity. The amendments will be effective December 18, 2023 and will require timely disclosure of material cybersecurity incidents and annual disclosures related to cybersecurity risk management, strategy, and governance. Under the new rules, a material cybersecurity incident will be required to be disclosed on a Form 8-K within four business days after the learning of a material incident. The SEC has defined a cybersecurity incident to mean “an unauthorized occurrence, or a series of related unauthorized occurrences, on or conducted through a registrant’s information systems that jeopardizes the confidentiality, integrity, or availability of a registrant’s information systems or any information residing therein.” Risk management and strategy - Annually, Registrants will be required to describe the processes, if any, for assessing, identifying,and managing material risks from cybersecurity threats in sufficient detail for a reasonable investor to understand those processes. The registrant must also describe whether and how any risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected or are reasonably likely to materially affect the registrant, including its business strategy, results of operations, or financial condition. Governance - Disclosure is required about management’s and the board of directors’ oversight of cybersecurity risk, including a description of the board of directors’ oversight of risks from cybersecurity threats and a description of management’s role in assessing and managing the registrant’s material risks from cybersecurity threats. The annual disclosure requirements will be effective for the Company beginning with annual report for the year ending on December 31, 2023.

Cash and Cash Equivalents

Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2023
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	CASH AND CASH EQUIVALENTS (In Thousands) The following table is the schedule of Cash and Cash Equivalents at September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Cash and Due From Banks $ 39,778 $ 31,886 $ 44,872 Interest-bearing Deposits at Banks 254,961 32,774 328,557 Total Cash and Cash Equivalents $ 294,739 64,660 373,429

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES (In Thousands) The following table is the schedule of Available-For-Sale Securities at September 30, 2023, December 31, 2022 and September 30, 2022: Available-For-Sale Securities U.S. Government & Agency State and Mortgage- Corporate Total September 30, 2023 Available-For-Sale Securities, $ 190,000 $ 280 $ 398,323 $ 1,000 $ 589,603 Gross Unrealized Gains — — 1 — 1 Gross Unrealized Losses (13,579) — (56,585) (200) (70,364) Available-For-Sale Securities, 176,421 280 341,739 800 519,240 Available-For-Sale Securities, 390,923 Maturities of Debt Securities, Within One Year $ 15,000 $ — $ 586 $ — $ 15,586 From 1 - 5 Years 175,000 — 215,671 — 390,671 From 5 - 10 Years — 280 182,066 1,000 183,346 Over 10 Years — — — — — Maturities of Debt Securities, Within One Year $ 14,736 $ — $ 569 $ — $ 15,305 From 1 - 5 Years 161,685 — 193,699 — 355,384 From 5 - 10 Years — 280 147,471 800 148,551 Over 10 Years — — — — — Securities in a Continuous Less than 12 Months $ 14,914 $ — $ 11,262 $ — $ 26,176 12 Months or Longer 161,506 — 330,190 800 492,496 Total $ 176,420 $ — $ 341,452 $ 800 $ 518,672 Number of Securities in a 25 — 154 1 180 Unrealized Losses on Less than 12 Months $ 86 $ — $ 317 $ — $ 403 12 Months or Longer 13,493 — 56,268 200 69,961 Total $ 13,579 $ — $ 56,585 $ 200 $ 70,364 Available-For-Sale Securities U.S. Government & Agency State and Mortgage- Corporate Total Disaggregated Details: US Agency Obligations, $ 190,000 US Agency Obligations, 176,421 Local Municipal Obligations, $ 280 Local Municipal Obligations, 280 US Government Agency $ 7,416 US Government Agency 6,885 Government Sponsored Entity 390,907 Government Sponsored Entity 334,854 Corporate Trust Preferred Securities, at Amortized Cost $ 1,000 Corporate Trust Preferred Securities, at Fair Value 800 December 31, 2022 Available-For-Sale Securities, $ 190,000 $ 340 $ 447,755 $ 1,000 $ 639,095 Gross Unrealized Gains 15 — 65 — 80 Gross Unrealized Losses (14,816) — (50,664) (200) (65,680) Available-For-Sale Securities, 175,199 340 397,156 800 573,495 Available-For-Sale Securities, 308,266 Securities in a Continuous Less than 12 Months $ 66,690 $ — $ 183,868 $ — $ 250,558 12 Months or Longer 93,493 — 199,262 800 293,555 Total $ 160,183 $ — $ 383,130 $ 800 $ 544,113 Number of Securities in a 23 — 150 1 174 Unrealized Losses on Less than 12 Months $ 3,310 $ — $ 18,756 $ — $ 22,066 12 Months or Longer 11,506 — 31,908 200 43,614 Total $ 14,816 $ — $ 50,664 $ 200 $ 65,680 Disaggregated Details: US Agency Obligations, $ 190,000 US Agency Obligations, 175,199 Local Municipal Obligations, $ 340 Local Municipal Obligations, 340 US Government Agency $ 7,934 Available-For-Sale Securities U.S. Government & Agency State and Mortgage- Corporate Total US Government Agency 7,433 Government Sponsored Entity 439,821 Government Sponsored Entity 389,723 Corporate Trust Preferred Securities, at Amortized Cost $ 1,000 Corporate Trust Preferred Securities, at Fair Value 800 September 30, 2022 Available-For-Sale Securities, $ 180,000 $ 340 $ 465,485 $ 1,000 $ 646,825 Gross Unrealized Gains — — 3 — 3 Gross Unrealized Losses (16,035) — (55,539) (200) (71,774) Available-For-Sale Securities, 163,965 340 409,949 800 575,054 Available-For-Sale Securities, 414,929 Securities in a Continuous Less than 12 Months $ 71,419 $ — $ 274,491 $ — $ 345,910 12 Months or Longer 92,545 — 135,329 800 228,674 Total $ 163,964 $ — $ 409,820 $ 800 $ 574,584 Number of Securities in a 24 — 156 1 181 Unrealized Losses on Securities Less than 12 Months $ 3,581 $ — $ 30,521 $ — $ 34,102 12 Months or Longer 12,454 — 25,018 200 37,672 Total $ 16,035 $ — $ 55,539 $ 200 $ 71,774 Disaggregated Details: US Agency Obligations, $ 180,000 US Agency Obligations, 163,965 Local Municipal Obligations, $ 340 Local Municipal Obligations, 340 US Government Agency $ 8,243 US Government Agency 7,842 Government Sponsored Entity 457,242 Government Sponsored Entity 402,107 Corporate Trust Preferred Securities, at Amortized Cost $ 1,000 Corporate Trust Preferred Securities, at Fair Value 800 At September 30, 2023, there was no allowance for credit losses for the AFS debt securities portfolio. The following table is the schedule of Held-To-Maturity Securities at September 30, 2023, December 31, 2022 and September 30, 2022: Held-To-Maturity Securities State and Mortgage- Total September 30, 2023 Held-To-Maturity Securities, $ 131,017 $ 9,560 $ 140,577 Gross Unrealized Gains — — — Gross Unrealized Losses (5,204) (562) (5,766) Held-To-Maturity Securities, 125,813 8,998 134,811 Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value 117,723 Held-To-Maturity Securities, 111,957 Maturities of Debt Securities, Within One Year $ 56,686 $ — $ 56,686 From 1 - 5 Years 71,994 9,560 81,554 From 5 - 10 Years 2,308 — 2,308 Over 10 Years 29 — 29 Maturities of Debt Securities, Within One Year $ 55,883 $ — $ 55,883 From 1 - 5 Years 67,716 8,998 76,714 From 5 - 10 Years 2,185 — 2,185 Over 10 Years 29 — 29 Securities in a Continuous Less than 12 Months $ 1,575 $ — $ 1,575 12 Months or Longer 108,092 8,998 117,090 Total $ 109,667 $ 8,998 $ 118,665 Number of Securities in a 339 16 355 Unrealized Losses on Securities Less than 12 Months $ 86 $ — $ 86 12 Months or Longer 5,118 562 5,680 Total $ 5,204 $ 562 $ 5,766 Disaggregated Details: Municipal Obligations, at Amortized Cost $ 131,017 Municipal Obligations, at Fair Value 125,813 US Government Agency $ 3,292 US Government Agency 3,075 Held-To-Maturity Securities State and Mortgage- Total Government Sponsored Entity 6,268 Government Sponsored Entity 5,923 December 31, 2022 Held-To-Maturity Securities, $ 163,600 $ 11,764 $ 175,364 Gross Unrealized Gains 1 — 1 Gross Unrealized Losses (3,131) (611) (3,742) Held-To-Maturity Securities, 160,470 11,153 171,623 Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value 146,722 Held-To-Maturity Securities, 142,982 Securities in a Continuous Less than 12 Months $ 137,773 $ 11,153 $ 148,926 12 Months or Longer — — — Total $ 137,773 $ 11,153 $ 148,926 Number of Securities in a 397 16 413 Unrealized Losses on Less than 12 Months $ 3,131 $ 611 $ 3,742 12 Months or Longer — — — Total $ 3,131 $ 611 $ 3,742 Disaggregated Details: Municipal Obligations, at Amortized Cost $ 163,600 Held-To-Maturity Securities State and Mortgage- Total Municipal Obligations, at Fair Value 160,470 US Government Agency $ 3,898 US Government Agency 3,687 Government Sponsored Entity 7,866 Government Sponsored Entity 7,466 September 30, 2022 Held-To-Maturity Securities, $ 169,619 $ 12,559 $ 182,178 Gross Unrealized Gains 1 — 1 Gross Unrealized Losses (5,771) (608) (6,379) Held-To-Maturity Securities, 163,849 11,951 175,800 Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value 159,742 Held-To-Maturity Securities, 153,364 Securities in a Continuous Less than 12 Months $ 141,132 $ 11,951 $ 153,083 12 Months or Longer — — — Total $ 141,132 $ 11,951 $ 153,083 Number of Securities in a 419 16 435 Unrealized Losses on Less than 12 Months $ 5,771 $ 608 $ 6,379 12 Months or Longer — — — Total $ 5,771 $ 608 $ 6,379 September 30, 2022 Disaggregated Details: Municipal Obligations, at Amortized Cost $ 169,619 Municipal Obligations, at Fair Value 163,849 US Government Agency $ 4,115 US Government Agency 3,924 Government Sponsored Entity 8,444 Government Sponsored Entity 8,027 In the tables above, maturities of mortgage-backed securities are included based on their contractual lives. Actual maturities will differ because issuers may have the right to call or prepay obligations with or without prepayment penalties. Arrow's investment policy requires that investments held in our portfolio be investment grade or better at the time of purchase. Arrow performs an analysis of the creditworthiness of municipal obligations to determine if a security is of investment grade. The analysis may include but may not solely rely upon credit analysis conducted by external credit rating agencies. Arrow evaluates AFS debt securities in unrealized loss positions at each measurement date to determine whether the decline in the fair value below the amortized cost basis (impairment) is due to credit-related factors or non-credit-related factors. Any impairment that is not credit related is recognized in other comprehensive income, net of applicable taxes. Credit-related impairment is recognized within the allowance for credit losses on the balance sheet, limited to the amount by which the amortized cost basis exceeds the fair value, with a corresponding adjustment to earnings via credit loss expense. Arrow determined that at September 30, 2023, gross unrealized losses were primarily attributable to changes in interest rates, relative to when the investment securities were purchased, and not due to the credit quality of the investment securities. Arrow does not intend to sell, nor is it more likely than not that Arrow will be required to sell any securities before recovery of its amortized cost basis, which may be at maturity. Therefore, Arrow carried no allowance for credit loss at September 30, 2023 and there was no credit loss expense recognized by Arrow with respect to the securities portfolio during the three months ended September 30, 2023. Arrow's HTM debt securities are comprised of U.S. government-sponsored enterprises (GSEs) or state and municipal obligations. GSE securities carry the explicit and/or implicit guarantee of the U.S. government, are widely recognized as “risk free,” and have a long history of zero credit loss. Arrow determined that the expected credit loss on its HTM debt portfolio was immaterial and therefore no allowance for credit loss was recorded as of September 30, 2023. The following table is the schedule of Equity Securities at September 30, 2023, December 31, 2022 and September 30, 2022: Equity Securities September 30, 2023 December 31, 2022 September 30, 2022 Equity Securities, at Fair Value $1,960 $2,174 $2,126 The following is a summary of realized and unrealized gains and losses recognized in net income on equity securities during the three and nine month periods ended September 30, 2023 and 2022: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2023 2022 2023 2022 Net (Loss) Gain on Equity Securities $ 71 $ 95 $ (214) $ 379 Less: Net gain recognized during the reporting period on equity securities sold during the period — — — — Unrealized net (loss) gain recognized during the reporting period on equity securities still held at the reporting date $ 71 $ 95 $ (214) $ 379

Loans

Loans	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans	LOANS (In Thousands) Loan Categories and Past Due Loans The following two tables present loan balances outstanding as of September 30, 2023 and an analysis of the recorded investment in loans that are past due at these dates. Generally, Arrow considers a loan past due 30 or more days when the borrower is two payments past due. Loans held-for-sale of $165, $656 and $483 as of September 30, 2023, December 31, 2022 and September 30, 2022, respectively, are included in the residential real estate balances for current loans. Schedule of Past Due Loans by Loan Category Commercial Commercial Real Estate Consumer Residential Total September 30, 2023 Loans Past Due 30-59 Days $ 247 $ 13,787 $ 11,864 $ 1,692 $ 27,590 Loans Past Due 60-89 Days 59 1,977 4,953 18 7,007 Loans Past Due 90 or more Days 3 — 1,504 3,271 4,778 Total Loans Past Due 309 15,764 18,321 4,981 39,375 Current Loans 147,757 718,840 1,089,316 1,143,329 3,099,242 Total Loans $ 148,066 $ 734,604 $ 1,107,637 $ 1,148,310 $ 3,138,617 December 31, 2022 Loans Past Due 30-59 Days $ 48 $ 370 $ 13,657 $ 1,833 $ 15,908 Loans Past Due 60-89 Days 33 — 4,517 112 4,662 Loans Past Due 90 or more Days 44 — 3,503 4,790 8,337 Total Loans Past Due 125 370 21,677 6,735 28,907 Current Loans 140,168 706,652 1,043,458 1,064,022 2,954,300 Total Loans $ 140,293 $ 707,022 $ 1,065,135 $ 1,070,757 $ 2,983,207 September 30, 2022 Loans Past Due 30-59 Days $ 86 $ — $ 8,870 $ 393 $ 9,349 Loans Past Due 60-89 Days 80 — 4,397 1,266 5,743 Loans Past Due 90 or more Days — 235 1,708 3,487 5,430 Total Loans Past Due 166 235 14,975 5,146 20,522 Current Loans 138,807 678,982 1,040,610 1,045,873 2,904,272 Total Loans $ 138,973 $ 679,217 $ 1,055,585 $ 1,051,019 $ 2,924,794 The increase in loans past due 30-59 days within Commercial Real Estate is primarily attributable to one commercial loan relationship. The Company is actively working with the borrower to allow the borrower to stabilize the property’s cash flow. The property's collateral value exceeds the loan exposure. Schedule of Non Accrual Loans by Category Commercial September 30, 2023 Commercial Real Estate Consumer Residential Total Loans 90 or More Days Past Due $ — $ — $ — $ 251 $ 251 Nonaccrual Loans 3 — 1,572 4,448 6,023 Nonaccrual With No Allowance for Credit Loss 3 — 1,572 4,448 6,023 Interest Income on Nonaccrual Loans — — — — — December 31, 2022 Loans 90 or More Days Past Due $ 44 $ — $ — $ 1,113 $ 1,157 Nonaccrual Loans 8 3,110 3,503 4,136 10,757 September 30, 2022 Loans 90 or More Days Past Due $ — $ — $ — $ 514 $ 514 Nonaccrual Loans 9 3,401 1,708 3,694 8,812 Arrow disaggregates its loan portfolio into the following four categories: Commercial - Arrow offers a variety of loan options to meet the specific needs of our commercial customers including term loans, time notes and lines of credit. Such loans are made available to businesses for working capital needs such as inventory and receivables, business expansion and equipment purchases. Generally, a collateral lien is placed on equipment or other assets owned by the borrower. Generally, these loans carry a higher risk than commercial real estate loans due to the nature of the underlying collateral, which can be business assets such as equipment and accounts receivable and generally have a lower liquidation value than real estate. In the event of default by the borrower, Arrow may be required to liquidate collateral at deeply discounted values. To reduce the risk, management usually obtains personal guarantees to support the borrowing, as permitted by applicable law. Commercial Real Estate - Arrow offers commercial real estate loans to finance real estate purchases, refinancings, expansions and improvements to commercial properties. Commercial real estate loans are made to finance the purchases of real property which generally consists of real estate with completed structures. These commercial real estate loans are typically secured by first liens on the real estate, which may include apartments, commercial structures, housing businesses, healthcare facilities, and both owner- and non-owner-occupied facilities. These loans are typically less risky than commercial loans, since they are secured by real estate and buildings, and are generally originated in amounts of no more than 80% of the appraised value of the property. However, Arrow also offers commercial construction and land development loans to finance projects. Many projects will ultimately be used by the borrowers' businesses, while others are developed for resale. These real estate loans are also typically secured by first liens on the real estate, which may include apartments, commercial structures, housing businesses, healthcare facilities and both owner-occupied and non-owner-occupied facilities. There is enhanced risk during the construction period, since the loan is secured by an incomplete project. Consumer Loans - This category is primarily comprised of automobile loans. Arrow primarily finances the purchases of automobiles indirectly through dealer relationships located throughout upstate New York and Vermont. Most automobile loans carry a fixed rate of interest with principal repayment terms typically ranging from three one Residential - Residential real estate loans consist primarily of loans secured by first or second mortgages on primary residences. Arrow originates fixed-rate and adjustable-rate one-to-four-family residential real estate loans for the construction, purchase of real estate or refinancing of an existing mortgage. These loans are collateralized primarily by owner-occupied properties generally located in Arrow's market area. Loans on one-to-four-family residential real estate are generally originated in amounts of no more than 80% of the purchase price or appraised value (whichever is lower), or have private mortgage insurance. Arrow’s underwriting analysis for residential mortgage loans typically includes credit verification, independent appraisals, and a review of the borrower’s financial condition. Mortgage title insurance and hazard insurance are normally required. It is Arrow's general practice to underwrite residential real estate loans to secondary market standards. Construction loans have a unique risk, because they are secured by an incomplete dwelling. This risk is reduced through periodic site inspections, including one at each loan draw period. In addition, Arrow offers fixed home equity loans, as well as home equity lines of credit to consumers to finance home improvements, debt consolidation, education and other uses. Arrow's policy allows for a maximum loan to value ratio of 80%, although periodically higher advances are allowed. Arrow originates home equity lines of credit and second mortgage loans (loans secured by a second junior lien position on one-to-four-family residential real estate). Risk is generally reduced through underwriting criteria, which include credit verification, appraisals, a review of the borrower's financial condition, and personal cash flows. A security interest, with title insurance when necessary, is taken in the underlying real estate. Allowance for Credit Losses Loan segments were selected by class code and application code to ensure each segment is comprised of loans with homogenous loan characteristics and similar risk profiles. The resulting loan segments are commercial, commercial real estate, consumer and residential real estate loans. The consumer segment is mainly comprised of automobile loans, and since they are relatively short-term in nature, with similar dollar amounts and collateral, the vintage analysis method was selected to determine the credit loss reserve. The vintage method utilizes Arrow loan data exclusively as the method calculates a loss rate based on the total origination balance of the loans by year and the charge-off and recovery rate of the same origination year. Arrow maintains, over the life of the loan, the loss curve by vintage year. The discounted cash flow method (DCF) is used to calculate the reserve for credit losses for the commercial, commercial real estate and residential real estate segments. The September 30, 2023 allowance for credit losses calculation incorporated a reasonable and supportable forecast period to account for economic conditions utilized in the measurement. The quantitative model utilized an economic forecast sourced from reputable third-parties that reflects the economic conditions with an improvement in the national unemployment rate of approximately 0.33% during the six-quarter forecast period, while forecasted gross domestic product projected an improvement of approximately 0.42%. The home price index (HPI) forecast declined approximately 1.6% from the previous quarter level. Key assumptions utilized in the CECL calculation include loan segmentation, loan loss regression analysis, reasonable and supportable forecast period, reversion period, discounted cash flow inputs including economic forecast data and prepayment and curtailment speeds and qualitative factors. Key assumptions are reviewed and approved on a quarterly basis. There were no assumption changes for the third quarter calculation. Driven by current economic forecasts, loan growth and net charge offs during the quarter, the third quarter provision for credit losses was $354 thousand. The provision is directionally consistent with both the latest economic forecasts as well as third quarter activity. Management's evaluation considers the allowance for credit losses for loans to be appropriate as of September 30, 2023. The following table details activity in the allowance for credit losses on loans for the three and nine months ended September 30, 2023 and September 30, 2022: Allowance for Credit Losses Rollforward of the Allowance for Credit Losses for the Quarterly Period: Commercial Commercial Real Estate Consumer Residential Total Rollforward of the Allowance for Credit Losses for the Quarterly Period: June 30, 2023 $ 1,972 $ 15,697 $ 2,646 $ 10,855 $ 31,170 Charge-offs — — (1,204) — (1,204) Recoveries — — 792 — 792 Provision (139) (114) 301 306 354 September 30, 2023 $ 1,833 $ 15,583 $ 2,535 $ 11,161 $ 31,112 December 31, 2022 $ 1,961 $ 15,213 $ 2,585 $ 10,193 $ 29,952 Charge-offs $ — $ — $ (3,806) $ (6) $ (3,812) Recoveries $ — $ — $ 2,116 $ — $ 2,116 Provision $ (128) $ 370 $ 1,640 $ 974 $ 2,856 September 30, 2023 $ 1,833 $ 15,583 $ 2,535 $ 11,161 $ 31,112 June 30, 2022 $ 2,465 $ 13,936 $ 2,358 $ 9,331 $ 28,090 Charge-offs (44) — (1,103) — (1,147) Recoveries — — 574 — 574 Provision (416) 930 692 509 1,715 September 30, 2022 $ 2,005 $ 14,866 $ 2,521 $ 9,840 $ 29,232 December 31, 2021 $ 2,298 $ 13,136 $ 2,402 $ 9,445 $ 27,281 Charge-offs $ (48) $ — $ (2,805) $ (30) $ (2,883) Recoveries $ 26 $ — $ 1,419 $ — $ 1,445 Provision $ (271) $ 1,730 $ 1,505 $ 425 $ 3,389 September 30, 2022 $ 2,005 $ 14,866 $ 2,521 $ 9,840 $ 29,232 Estimated Credit Losses on Off-Balance Sheet Credit Exposures Recognized as Other Liabilities Financial instrument credit losses apply to off-balance sheet credit exposures such as unfunded loan commitments and standby letters of credit. A liability for expected credit losses for off-balance sheet exposures is recognized if the entity has a present contractual obligation to extend the credit and the obligation is not unconditionally cancellable by the entity. Changes in this allowance are reflected in other operating expenses within the non-interest expense category. As of September 30, 2023, the total unfunded commitment off-balance sheet credit exposure was $1.7 million. Individually Evaluated Loans All loans not included in the vintage analysis method that exceed $250,000, which are on nonaccrual status, are evaluated on an individual basis. Arrow made the policy election to apply a practical expedient for collateral dependent financial assets when the borrower is experiencing financial difficulty and the repayment is expected through the sale of the collateral. This allows Arrow to use fair value of the collateral at the reporting date adjusted for estimated cost to sell when recording the net carrying amount of the asset and determining the allowance for credit losses for a financial asset. In the event where the repayment of a collateral dependent financial asset is expected to be provided substantially through the operating of the collateral, Arrow will use fair value of the collateral at the reporting date when recording the net carrying amount of the asset and determining the allowance for credit losses. As of September 30, 2023, there were four total relationships identified to be evaluated for loss on an individual basis which had an amortized cost basis of $1.9 million and none had an allowance for credit loss. The following tables present the amortized cost basis of collateral-dependent loans by class of loans as of September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 Collateral Type -Residential Real Estate Collateral Type - Commercial Real Estate Total Loans Commercial $ — $ — $ — Commercial Real Estate — — — Consumer — — — Residential 1,949 — 1,949 Total $ 1,949 $ — $ 1,949 December 31, 2022 Collateral Type -Residential Real Estate Collateral Type - Commercial Real Estate Total Loans Commercial $ — $ — $ — Commercial Real Estate — 3,110 3,110 Consumer — — — Residential 1,963 — 1,963 Total $ 1,963 $ 3,110 $ 5,073 September 30, 2022 Collateral Type -Residential Real Estate Collateral Type - Commercial Real Estate Total Loans Commercial $ — $ — $ — Commercial Real Estate — 3,166 3,166 Consumer — — — Residential 1,494 — 1,494 Total $ 1,494 $ 3,166 $ 4,660 Allowance for Credit Losses - Collectively and Individually Evaluated Commercial Commercial Real Estate Consumer Residential Total September 30, 2023 Ending Loan Balance - Collectively Evaluated $ 148,066 $ 734,604 $ 1,107,637 $ 1,146,361 $ 3,136,668 Allowance for Credit Losses - Loans Collectively Evaluated 1,833 15,583 2,535 11,161 31,112 Ending Loan Balance - Individually Evaluated — — — 1,949 1,949 Allowance for Credit Losses - Loans Individually Evaluated — — — — — December 31, 2022 Ending Loan Balance - Collectively Evaluated $ 140,293 $ 703,912 $ 1,065,135 $ 1,068,794 $ 2,978,134 Allowance for Credit Losses - Loans Collectively Evaluated 1,961 15,213 2,585 10,193 $ 29,952 Ending Loan Balance - Individually Evaluated — 3,110 — 1,963 5,073 Allowance for Credit Losses - Loans Individually Evaluated — — — — — September 30, 2022 Ending Loan Balance - Collectively Evaluated $ 138,973 $ 676,051 $ 1,055,585 $ 1,049,525 $ 2,920,134 Allowance for Credit Losses - Loans Collectively Evaluated 2,005 14,866 2,521 9,840 29,232 Ending Loan Balance - Individually Evaluated — 3,166 — 1,494 4,660 Allowance for Credit Losses - Loans Individually Evaluated — — — — — Through the provision for credit losses, an allowance for credit losses is maintained that reflects the best estimate of the calculated expected credit losses in Arrow's loan portfolio as of the balance sheet date. Additions are made to the allowance for credit losses through a periodic provision for credit losses. Actual credit losses are charged against the allowance for credit losses when loans are deemed uncollectible and recoveries of amounts previously charged off are recorded as credits to the allowance for credit losses. Arrow's loan officers and risk managers meet at least quarterly to discuss and review the conditions and risks associated with certain criticized and classified commercial-related relationships. In addition, the independent internal loan review department performs periodic reviews of the credit quality indicators on individual loans in the commercial loan portfolio. Arrow considers the need to qualitatively adjust expected credit loss estimates for information not already captured in the loss estimation process. These qualitative factor adjustments may increase or decrease management’s estimate of expected credit losses. Adjustments are not made for information that has already been considered and included in the loss estimation process. Arrow considers the qualitative factors that are relevant as of the reporting date, which may include, but are not limited to the following factors: • The nature and volume of Arrow's financial assets; • The existence, growth, and effect of any concentrations of credit; • The volume and severity of past due loans, the volume of nonaccrual loans, and the volume and severity of adversely classified or graded loans; • The value of the underlying collateral for loans that are not collateral-dependent; • Arrow's lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries; • The quality of Arrow's loan review function; • The experience, ability, and depth of Arrow's lending, investment, collection, and other relevant management/staff; • The effect of other external factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters; • Actual and expected changes in international, national, regional, and local economic and business conditions and developments in which the institution operates that affect the collectability of financial assets; and, • Other qualitative factors not reflected in quantitative loss rate calculations. Loan Credit Quality Indicators and Modification The Company adopted ASU 2022-02, "Financial Instruments - Credit Losses (Topic 326)" ("ASU 2022-02") effective January 1, 2023. ASU 2022-02 requires that entities disclose current-period gross charge-offs by year of origination for loans and leases, which has been incorporated in the credit quality table below. There was only one new immaterial TDR in the first quarter of 2022. In the first nine months of 2023, approximately $1.5 million of residential real estate loans were modified The modifications were in the form of short-term forbearance of interest payments. The financial impact of the forbearance is less than ten thousand dollars per month of forgone interest income The following tables present credit quality indicators by total loans amortized cost basis by origination year as of September 30, 2023, December 31, 2022 and September 30, 2022: Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loan Converted to Term Total September 30, 2023 2023 2022 2021 2020 2019 Prior Commercial: Risk rating Satisfactory $ 37,300 $ 36,456 $ 23,602 $ 10,622 $ 4,799 $ 21,459 $ 10,328 $ — $ 144,566 Special mention — — — 128 — — — — 128 Substandard — — — — 26 3,245 101 — 3,372 Doubtful — — — — — — — — — Total Commercial Loans $ 37,300 $ 36,456 $ 23,602 $ 10,750 $ 4,825 $ 24,704 $ 10,429 $ — $ 148,066 Current-period gross charge-offs $ — $ — $ — $ — $ — $ — $ — Commercial Real Estate: Risk rating Satisfactory $ 57,761 $ 157,741 $ 106,128 $ 121,968 $ 41,827 $ 184,590 $ 2,035 $ — $ 672,050 Special mention — 3,123 — — — 4,150 — — 7,273 Substandard — 9,299 1,685 2,590 797 40,411 499 — 55,281 Doubtful — — — — — — — — — Total Commercial Real Estate Loans $ 57,761 $ 170,163 $ 107,813 $ 124,558 $ 42,624 $ 229,151 $ 2,534 $ — $ 734,604 Current-period gross charge-offs $ — $ — $ — $ — $ — $ — $ — Consumer: Risk rating Performing $ 322,084 $ 384,607 $ 216,234 $ 107,743 $ 53,646 $ 21,276 $ — $ — $ 1,105,590 Nonperforming 109 625 562 192 68 33 458 — 2,047 Total Consumer Loans $ 322,193 $ 385,232 $ 216,796 $ 107,935 $ 53,714 $ 21,309 $ 458 $ — $ 1,107,637 Current-period gross charge-offs $ 192 $ 915 $ 1,689 $ 477 $ 299 $ 234 $ 3,806 Residential: Risk rating Performing $ 106,267 $ 235,027 $ 191,780 $ 118,517 $ 76,518 $ 305,076 $ 108,098 $ — $ 1,141,283 Nonperforming — — 2,770 1,006 598 2,152 501 — 7,027 Total Residential Loans $ 106,267 $ 235,027 $ 194,550 $ 119,523 $ 77,116 $ 307,228 $ 108,599 $ — $ 1,148,310 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 6 $ 6 Total Loans $ 523,521 $ 826,878 $ 542,761 $ 362,766 $ 178,279 $ 582,392 $ 122,020 $ — $ 3,138,617 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loan Converted to Term Total December 31, 2022 2022 2021 2020 2019 2018 Prior Commercial: Risk rating Satisfactory $ 42,038 $ 28,718 $ 16,870 $ 7,857 $ 8,129 $ 20,379 $ 8,909 $ — $ 132,900 Special mention — — — — — 30 30 — 60 Substandard — — 255 478 — 3,464 3,136 — 7,333 Doubtful — — — — — — — — — Total Commercial Loans $ 42,038 $ 28,718 $ 17,125 $ 8,335 $ 8,129 $ 23,873 $ 12,075 $ — $ 140,293 Commercial Real Estate: Risk rating Satisfactory $ 152,858 $ 115,111 $ 121,811 $ 43,647 $ 63,913 $ 159,876 $ 1,603 $ — $ 658,819 Special mention 9,678 — — — 789 241 — — 10,708 Substandard 607 — 5,807 812 4,371 25,677 221 — 37,495 Doubtful — — — — — — — — — Total Commercial Real Estate Loans $ 163,143 $ 115,111 $ 127,618 $ 44,459 $ 69,073 $ 185,794 $ 1,824 $ — $ 707,022 Consumer: Risk rating Performing $ 482,530 $ 284,831 $ 154,819 $ 88,165 $ 38,852 $ 12,032 $ 504 $ — $ 1,061,733 Nonperforming 758 1,468 607 325 157 87 — — 3,402 Total Consumer Loans $ 483,288 $ 286,299 $ 155,426 $ 88,490 $ 39,009 $ 12,119 $ 504 $ — $ 1,065,135 Residential: Risk rating Performing $ 210,565 $ 198,195 $ 128,372 $ 82,965 $ 74,281 $ 259,787 $ 111,563 $ — $ 1,065,728 Nonperforming — 255 939 597 520 2,311 407 — 5,029 Total Residential Loans $ 210,565 $ 198,450 $ 129,311 $ 83,562 $ 74,801 $ 262,098 $ 111,970 $ — $ 1,070,757 Total Loans $ 899,034 $ 628,578 $ 429,480 $ 224,846 $ 191,012 $ 483,884 $ 126,373 $ — $ 2,983,207 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loan Converted to Term Total September 30, 2022 2022 2021 2020 2019 2018 Prior Commercial: Risk rating Satisfactory $ 34,589 $ 31,762 $ 26,654 $ 7,554 $ 9,605 $ 11,194 $ 8,008 $ — $ 129,366 Special mention — — — — — 35 35 — 70 Substandard — 3,318 479 445 — 37 5,258 — 9,537 Doubtful — — — — — — — — — Total Commercial Loans $ 34,589 $ 35,080 $ 27,133 $ 7,999 $ 9,605 $ 11,266 $ 13,301 $ — $ 138,973 Commercial Real Estate: Risk rating Satisfactory $ 106,549 $ 136,306 $ 247,780 $ 40,959 $ 30,667 $ 64,934 $ 3,052 $ — $ 630,247 Special mention 9,801 — 2,973 — 4,315 1,425 — — 18,514 Substandard 9,531 4,723 11,352 1,133 93 3,403 221 — 30,456 Doubtful — — — — — — — — — Total Commercial Real Estate Loans $ 125,881 $ 141,029 $ 262,105 $ 42,092 $ 35,075 $ 69,762 $ 3,273 $ — $ 679,217 Consumer: Risk rating Performing $ 406,206 $ 309,006 $ 172,974 $ 101,458 $ 47,874 $ 15,933 $ 483 $ — $ 1,053,934 Nonperforming 268 583 351 304 58 87 — — 1,651 Total Consumer Loans $ 406,474 $ 309,589 $ 173,325 $ 101,762 $ 47,932 $ 16,020 $ 483 $ — $ 1,055,585 Residential: Risk rating Performing $ 163,702 $ 209,408 $ 173,435 $ 84,370 $ 61,907 $ 232,021 $ 122,191 $ — $ 1,047,034 Nonperforming — 257 939 28 318 2,268 175 — 3,985 Total Residential Loans $ 163,702 $ 209,665 $ 174,374 $ 84,398 $ 62,225 $ 234,289 $ 122,366 $ — $ 1,051,019 Total Loans $ 730,646 $ 695,363 $ 636,937 $ 236,251 $ 154,837 $ 331,337 $ 139,423 $ — $ 2,924,794 For the purposes of the table above, nonperforming consumer and residential loans were those loans on nonaccrual status or were 90 days or more past due and still accruing interest. As of September 30, 2023, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process is $2.8 million. For the allowance calculation, an internally developed system of five credit quality indicators is used to rate the credit worthiness of each commercial loan defined as follows: 1) Satisfactory - "Satisfactory" borrowers have acceptable financial condition with satisfactory record of earnings and sufficient historical and projected cash flow to service the debt. Borrowers have satisfactory repayment histories and primary and secondary sources of repayment can be clearly identified; 2) Special Mention - Loans in this category have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. "Special mention" assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. Loans which might be assigned this credit quality indicator include loans to borrowers with deteriorating financial strength and/or earnings record and loans with potential for problems due to weakening economic or market conditions; 3) Substandard - Loans classified as “substandard” are inadequately protected by the current sound net worth or paying capacity of the borrower or the collateral pledged, if any. Loans in this category have well defined weaknesses that jeopardize the repayment. They are characterized by the distinct possibility that Arrow will sustain some loss if the deficiencies are not corrected. “Substandard” loans may include loans which are likely to require liquidation of collateral to effect repayment, and other loans where character or ability to repay has become suspect. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified substandard; 4) Doubtful - Loans classified as “doubtful” have all of the weaknesses inherent in those classified as “substandard” with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of current existing facts, conditions, and values, highly questionable and improbable. Although possibility of loss is extremely high, classification of these loans as “loss” has been deferred due to specific pending factors or events which may strengthen the value (e.g. possibility of additional collateral, injection of capital, collateral liquidation, debt restructure, economic recovery, etc). Loans classified as “doubtful” need to be placed on non-accrual; and 5) Loss - Loans classified as “loss” are considered uncollectible with collateral of such little value that their continuance as bankable assets is not warranted. As of the date of the balance sheet, all loans in this category have been charged-off to the allowance for loan losses. Commercial loans are generally evaluated on an annual basis depending on the size and complexity of the loan relationship, unless the credit related quality indicator falls to a level of "special mention" or below, when the loan is evaluated quarterly. The credit quality indicator is one of the factors used in assessing the level of incurred risk of loss in our commercial related loan portfolios.

Debt

Debt	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Debt	DEBT (Dollars in Thousands) Schedule of Borrowings: September 30, 2023 December 31, 2022 September 30, 2022 Balance: BTFP Advances 150,000 — — FHLBNY Overnight Advances 10,000 27,000 — FHLBNY Term Advances 14,300 27,800 25,000 Total Borrowings $ 174,300 $ 54,800 $ 25,000 Maximum Borrowing Capacity: Federal Funds Purchased $ 52,000 $ 52,000 $ 52,000 Federal Home Loan Bank of New York 607,596 663,259 799,544 Federal Reserve Bank of New York 722,493 649,112 650,642 Available Borrowing Capacity: Federal Funds Purchased $ 52,000 $ 52,000 $ 52,000 Federal Home Loan Bank of New York 449,296 608,458 774,544 Federal Reserve Bank of New York 722,493 649,112 650,642 Arrow's subsidiary banks have in place unsecured federal funds lines of credit with two correspondent banks. As a member of the FHLBNY, Arrow participates in the advance program which allows for overnight and term advances up to the limit of pledged collateral, including FHLBNY stock and any loans secured by real estate such as commercial real estate, residential real estate and home equity loans (see Notes 4: Investment Securities, and 5: Loans to the Consolidated Financial Statements). The maximum borrowing capacities at the FHLBNY and FRB are determined based on the fair value of the collateral pledged, subject to discounts determined by the respective lenders. As of September 30, 2023, the carrying cost for the FHLBNY collateral was approximately $874 million and approximately $1.2 billion for the FRB. As of September 30, 2023, the fair value for the FHLBNY collateral was approximately $741 million and approximately $1 billion for the FRB. The investment in FHLBNY stock is proportional to the total of Arrow's overnight and term advances (see the Schedule of Federal Reserve Bank and Federal Home Loan Bank Stock in Note 4, Investment Securities, to the Consolidated Financial Statements). Arrow's bank subsidiaries have also established borrowing facilities with the FRB of New York for potential “discount window” advances, pledging certain consumer loans as collateral (see Note 5, Loans , to the Consolidated Financial Statements). Debt Maturities BTFP Advances - The BTFP was created to support American businesses and households by making additional funding available to eligible depository institutions to help assure banks have the ability to meet the needs of all their depositors. In the second quarter of 2023, Arrow borrowed $150 million as part of the BTFP primarily replacing FHLB Advances.The BTFP Advances mature in less than 12 months and have a weighted average interest rate of 4.83% . Maturity Schedule of FHLBNY Term Advances : Balances Weighted Average Rate Final Maturity 9/30/2023 12/31/2022 9/30/2022 9/30/2023 12/31/2022 9/30/2022 First Year $ 7,800 $ 27,800 $ 5,000 5.14 % 2.70 % 1.81 % Second Year 6,500 — 20,000 5.59 % — % 1.75 % Total $ 14,300 $ 27,800 $ 25,000 5.38 % 2.70 % 1.77 % Long Term Debt - Guaranteed Preferred Beneficial Interests in Corporation's Junior Subordinated Debentures At September 30, 2023, there were outstanding two classes of financial instruments issued by two separate subsidiary business trusts of Arrow, Arrow Capital Statutory Trust II ("ACST II") and Arrow Capital Statutory Trust III ("ACST III" and, together with ACST II, the "Trusts"), identified as “Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts” on the Consolidated Balance Sheets and the Consolidated Statements of Income. The first of the two classes of trust-issued instruments outstanding at year-end was issued by ACST II, a Delaware business trust established on July 16, 2003, upon the filing of a certificate of trust with the Delaware Secretary of State. In July 2003, ACST II issued all of its voting (common) stock to Arrow and issued and sold to an unaffiliated purchaser 30-year guaranteed preferred beneficial interests in the trust's assets ("ACST II TRUPS"). The rate on the securities is variable, adjusting quarterly to the 3-month LIBOR plus 3.15%. Arrow designated SOFR as the replacement index for financial instruments. The rate on the securities will be tied to the 3-month Secured Overnight Financing Rate ("SOFR") plus 3.15% post-conversion. ACST II used the proceeds of the sale of the ACST II TRUPS to purchase an identical amount of junior subordinated debentures issued by Arrow that bear an interest rate identical at all times to the rate payable on the ACST II TRUPS. The ACST II TRUPS became redeemable after July 23, 2008 and mature on July 23, 2033. The second of the two classes of trust-issued instruments outstanding at year-end was issued by ACST III, a Delaware business trust established on December 23, 2004, upon the filing of a certificate of trust with the Delaware Secretary of State. On December 28, 2004, the ACST III issued all of its voting (common) stock to Arrow and issued and sold to an unaffiliated purchaser 30-year guaranteed preferred beneficial interests in the trust's assets ("ACST III TRUPS"). The rate on the ACST III TRUPS is a variable rate, adjusted quarterly, equal to the 3-month LIBOR plus 2.00%. The rate on the securities will be tied to the 3-month SOFR plus 2.00% post-conversion. ACST III used the proceeds of the sale of the ACST III TRUPS to purchase an identical amount of junior subordinated debentures issued by Arrow that bear an interest rate identical at all times to the rate payable on the ACST III TRUPS. The ACST III TRUPS became redeemable on or after March 31, 2010 and mature on December 28, 2034. Arrow has entered into interest rate swaps to synthetically fix the variable rate interest payments associated with $20 million in outstanding subordinated trust securities attributable to the Trusts. These agreements are designated as cash flow hedges. The primary assets of the Trusts are Arrow's junior subordinated debentures discussed above, and the sole revenues of the Trusts are payments received by them from Arrow with respect to the junior subordinated debentures. The trust preferred securities issued by the Trusts are non-voting. All common voting securities of the Trusts are owned by Arrow. Arrow used the net proceeds from its sale of junior subordinated debentures to the Trusts, facilitated by the Trusts' sale of their trust preferred securities to the purchasers thereof, for general corporate purposes. The trust preferred securities and underlying junior subordinated debentures, with associated expense that is tax deductible, qualify as Tier I capital under regulatory definitions. Arrow's primary source of funds to pay interest on the debentures that are held by the Trusts are current dividends received by Arrow from its subsidiary banks. Accordingly, Arrow's ability to make payments on the debentures, and the ability of the Trusts to make payments on their trust preferred securities, are dependent upon the continuing ability of Arrow's subsidiary banks to pay dividends to Arrow. Since the trust preferred securities issued by the subsidiary trusts and the underlying junior subordinated debentures issued by Arrow at September 30, 2023, December 31, 2022, and September 30, 2022 are classified as debt for financial statement purposes, the expense associated with these securities is recorded as interest expense in the Consolidated Statements of Income for the three years. Schedule of Guaranteed Preferred Beneficial Interests in Corporation's Junior Subordinated Debentures September 30, 2023 December 31, 2022 September 30, 2022 ACST II Balance $ 10,000 $ 10,000 $ 10,000 Period End: Variable Interest Rate 8.81 % 6.82 % 6.82 % Fixed Interest Rate resulting from cash flow hedge agreement 4.00 % 4.00 % 4.00 % ACST III Balance $ 10,000 $ 10,000 $ 10,000 Period End: Variable Interest Rate 7.66 % 5.67 % 5.67 % Fixed Interest Rate resulting from cash flow hedge agreement 2.86 % 2.86 % 2.86 %

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES (In Thousands) The following table presents the notional amount and fair value of Arrow's off-balance sheet commitments to extend credit and commitments under standby letters of credit as of September 30, 2023, December 31, 2022 and September 30, 2022: Commitments to Extend Credit and Letters of Credit September 30, 2023 December 31, 2022 September 30, 2022 Notional Amount: Commitments to Extend Credit $ 464,661 $ 424,197 $ 440,167 Standby Letters of Credit 4,201 3,627 3,445 Fair Value: Commitments to Extend Credit $ — $ — $ — Standby Letters of Credit 10 2 — Arrow is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Commitments to extend credit include home equity lines of credit, commitments for residential and commercial construction loans and other personal and commercial lines of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. The contract or notional amounts of those instruments reflect the extent of the involvement Arrow has in particular classes of financial instruments. Arrow's exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual notional amount of those instruments. Arrow uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are not expected to be fully drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Arrow evaluates each customer's creditworthiness on a case-by-case basis. Home equity lines of credit are secured by residential real estate. Construction lines of credit are secured by underlying real estate. For other lines of credit, the amount of collateral obtained, if deemed necessary by Arrow upon extension of credit, is based on management's credit evaluation of the counterparty. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, and income-producing commercial properties. Most of the commitments are variable rate instruments. Arrow does not issue any guarantees that would require liability-recognition or disclosure, other than its standby letters of credit. Arrow has issued conditional commitments in the form of standby letters of credit to guarantee payment on behalf of a customer and guarantee the performance of a customer to a third party. Standby letters of credit generally arise in connection with commercial lending relationships. The credit risk involved in issuing these instruments is essentially the same as that involved in extending loans to customers. Contingent obligations under standby letters of credit at September 30, 2023, December 31, 2022 and September 30, 2022 represent the maximum potential future payments Arrow could be required to make. Typically, these instruments have terms of 12 months or less and expire unused; therefore, the total amounts do not necessarily represent future cash requirements. Each customer is evaluated individually for creditworthiness under the same underwriting standards used for commitments to extend credit and on-balance sheet instruments. Arrow's policies governing loan collateral apply to standby letters of credit at the time of credit extension. Loan-to-value ratios will generally range from 50% for movable assets, such as inventory, to 100% for liquid assets, such as bank CD's. Fees for standby letters of credit range from 1% to 3% of the notional amount. Fees are collected upfront and amortized over the life of the commitment. The carrying amount and fair value of Arrow's standby letters of credit at September 30, 2023, December 31, 2022 and September 30, 2022, were insignificant. The fair value of standby letters of credit is based on the fees currently charged for similar agreements or the cost to terminate the arrangement with the counterparties. The fair value of commitments to extend credit is determined by estimating the fees to enter into similar agreements, taking into account the remaining terms and present creditworthiness of the counterparties, and for fixed rate loan commitments, the difference between the current and committed interest rates. Arrow provides several types of commercial lines of credit and standby letters of credit to its commercial customers. The pricing of these services is not isolated as Arrow considers the customer's complete deposit and borrowing relationship in pricing individual products and services. The commitments to extend credit also include commitments under home equity lines of credit, for which Arrow charges no fee. The carrying value and fair value of commitments to extend credit are not material and Arrow does not expect to incur any material loss as a result of these commitments. Except as noted below, Arrow, including its subsidiary banks, is not currently the subject of any material pending legal proceedings, other than ordinary routine litigation occurring in the normal course of their business. On an ongoing basis, Arrow is often the subject of, or a party to, various legal claims by other parties against Arrow, by Arrow against other parties, or involving Arrow, which arise in the normal course of business. Except as noted below, the various pending legal claims against Arrow will not, in the opinion of management based upon consultation with counsel, result in any material liability. The Company became aware that on June 23, 2023, Robert C. Ashe filed a putative class action complaint against the Company in the United States District Court for the Northern District of New York. In addition to the Company, the complaint names as defendants Thomas J. Murphy, the Company’s former CEO and from September 30, 2022 to February 20, 2023, its interim CFO, Edward J. Campanella, the Company’s former CFO, and Penko Ivanov, the Company’s current CFO (the “Individual Defendants” and, together with the Company, the "Defendants"). The complaint alleges that the Defendants made materially false and misleading statements regarding the Company’s business, operations and compliance policies in the Company’s public filings between March 12, 2022 and

Comprehensive Loss

Comprehensive Loss	9 Months Ended
	Sep. 30, 2023
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive Loss	COMPREHENSIVE LOSS (In Thousands) The following table presents the components of other comprehensive loss for the three and nine month periods ended September 30, 2023 and 2022: Schedule of Comprehensive Loss Three Months Ended September 30 Nine Months Ended September 30, Tax Tax Before-Tax Benefit Net-of-Tax Before-Tax Benefit Net-of-Tax Amount (Expense) Amount Amount (Expense) Amount 2023 Net Unrealized Securities Holding Loss on Securities Available-for-Sale Arising During the Period $ (7,796) $ 2,010 $ (5,786) $ (4,763) $ 1,227 $ (3,536) Net Unrealized Gain on Cash Flow Swap 846 (221) 625 125 (34) 91 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense 242 (61) 181 660 (169) 491 Amortization of Net Retirement Plan Actuarial Gain (40) 10 (30) (121) 31 (90) Amortization of Net Retirement Plan Prior Service Cost 51 (12) 39 154 (39) 115 Other Comprehensive Loss $ (6,697) $ 1,726 $ (4,971) $ (3,945) $ 1,016 $ (2,929) 2022 Net Unrealized Securities Holding Loss on Securities Available-for-Sale Arising During the Period $ (27,945) $ 7,144 $ (20,801) $ (70,945) $ 18,137 $ (52,808) Net Unrealized Gain on Cash Flow Swap 1,046 (268) 778 3,737 (956) 2,781 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense 75 (20) 55 57 (15) 42 Amortization of Net Retirement Plan Actuarial Loss 564 (144) 420 592 (151) 441 Amortization of Net Retirement Plan Prior Service Cost 57 (15) 42 171 (44) 127 Other Comprehensive Loss $ (26,203) $ 6,697 $ (19,506) $ (66,388) $ 16,971 $ (49,417) The following table presents the changes in accumulated other comprehensive (loss) income by component: Changes in Accumulated Other Comprehensive (Loss) Income by Component (1) Unrealized Loss on Available-for-Sale Securities Unrealized Gain on Cash Flow Swap Defined Benefit Plan Items Total Net Actuarial Loss Net Prior Service Cost For the quarter-to-date periods ended: June 30, 2023 $ (46,591) $ 3,830 $ (4,527) $ (325) $ (47,613) Other comprehensive income or loss before reclassifications (5,786) 625 — — (5,161) Amounts reclassified from accumulated other comprehensive income or loss — 181 (30) 39 190 Net current-period other comprehensive income or loss (5,786) 806 (30) 39 (4,971) September 30, 2023 $ (52,377) $ 4,636 $ (4,557) $ (286) $ (52,584) June 30, 2022 $ (32,621) $ 3,310 $ 660 $ (913) $ (29,564) Other comprehensive (loss) or income before reclassifications (20,801) 778 — — (20,023) Amounts reclassified from accumulated other comprehensive income or loss — 55 420 42 517 Net current-period other comprehensive (loss) or income (20,801) 833 420 42 (19,506) September 30, 2022 $ (53,422) $ 4,143 $ 1,080 $ (871) $ (49,070) For the Year-To-Date periods ended: December 31, 2022 $ (48,841) $ 4,054 $ (4,467) $ (401) $ (49,655) Other comprehensive income or loss before reclassifications (3,536) 91 — — (3,445) Amounts reclassified from accumulated other comprehensive income or loss — 491 (90) 115 516 Net current-period other comprehensive income or loss (3,536) 582 (90) 115 (2,929) September 30, 2023 $ (52,377) $ 4,636 $ (4,557) $ (286) $ (52,584) December 31, 2021 $ (614) $ 1,320 $ 639 $ (998) $ 347 Other comprehensive income or loss before reclassifications (52,808) 2,781 — — (50,027) Amounts reclassified from accumulated other comprehensive income or loss — 42 441 127 610 Net current-period other comprehensive income or loss (52,808) 2,823 441 127 (49,417) September 30, 2022 $ (53,422) $ 4,143 $ 1,080 $ (871) $ (49,070) (1) All amounts are net of tax. The following table presents the reclassifications out of accumulated other comprehensive income or loss: Reclassifications Out of Accumulated Other Comprehensive Income or Loss Details about Accumulated Other Comprehensive Income or Loss Components Amounts Reclassified from Accumulated Other Comprehensive Income or Loss Affected Line Item in the Statement Where Net Income Is Presented For the quarter-to-date periods ended: September 30, 2023 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (242) Interest expense Amortization of defined benefit pension items: Prior-service costs (51) (1) Salaries and Employee Benefits Actuarial loss 40 (1) Salaries and Employee Benefits (253) Total before Tax 63 Provision for Income Taxes Total reclassifications for the period $ (190) Net of Tax September 30, 2022 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (75) Interest expense Amortization of defined benefit pension items: Prior-service costs $ (57) (1) Salaries and Employee Benefits Actuarial loss (564) (1) Salaries and Employee Benefits (696) Total before Tax 179 Provision for Income Taxes Total reclassifications for the period $ (517) Net of Tax For the Year-to-date periods ended: September 30, 2023 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (660) Interest expense Amortization of defined benefit pension items: Prior-service costs (154) (1) Salaries and Employee Benefits Actuarial loss 121 (1) Salaries and Employee Benefits (693) Total before Tax 177 Provision for Income Taxes Total reclassifications for the period $ (516) Net of Tax September 30, 2022 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (57) Interest expense Amortization of defined benefit pension items: Prior-service costs (171) (1) Salaries and Employee Benefits Actuarial loss (592) (1) Salaries and Employee Benefits (820) Total before Tax 210 Provision for Income Taxes Total reclassifications for the period $ (610) Net of Tax (1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION (Dollars In Thousands, Except Share and Per Share Amounts) Arrow has established three stock-based compensation plans: a Long Term Incentive Plan, an Employee Stock Purchase Plan (ESPP) and an Employee Stock Ownership Plan (ESOP). All share and per share data have been adjusted for the September 26, 2023 3% stock dividend. Long Term Incentive Plan The Long Term Incentive Plan provides for the grant of incentive stock options, non-qualified stock options, restricted stock, restricted stock units, performance units and performance shares. The Compensation Committee of the Board of Directors administers the Long Term Incentive Plan. Stock Options - Options may be granted at a price no less than the greater of the par value or fair market value of such shares on the date on which such option is granted, and generally expire ten years from the date of grant. The options usually vest over a four-year period. The following table summarizes information about stock option activity for the year to date period ended September 30, 2023: Shares Weighted Average Exercise Price Outstanding at January 1, 2023 287,444 $ 28.56 Granted 57,680 31.47 Exercised (3,885) 20.95 Forfeited (35,139) 30.91 Outstanding at September 30, 2023 306,100 28.94 Vested at Period-End 207,642 27.81 Expected to Vest 98,458 31.32 Stock Options Granted Weighted Average Grant Date Information: Fair Value of Options Granted $ 7.78 Fair Value Assumptions: Dividend Yield 3.30 % Expected Volatility 28.38 % Risk Free Interest Rate 3.57 % Expected Lives (in years) 8.34 The following table presents information on the amounts expensed related to stock options for the three and nine month periods ended September 30, 2023 and 2022: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2023 2022 2023 2022 Amount expensed $ 24 $ 79 $ 196 $ 233 The expense recorded during the third quarter of 2023 reflects the reversal of previously recorded expense related to forfeited stock options related to the departure of the former President and CEO in accordance with the terms of the applicable award agreements. Restricted Stock Units - The Company grants restricted stock units which gives the recipient the right to receive shares of Company stock upon vesting. The fair value of each restricted stock unit is the market value of Company stock on the date of grant. 100% of the restricted stock unit awards vest three years from the grant date. Once vested, the restricted stock units become vested units and are no longer forfeitable. Vested units are not settled until the recipient's employment has terminated. Unvested restricted stock unit awards will generally be forfeited if the recipient ceases to be employed by the Company, with limited exceptions. The following table summarizes information about restricted stock unit activity for the periods ended September 30, 2023 and 2022: Restricted Stock Units Weighted Average Grant Date Fair Value Non-vested at January 1, 2023 13,925 $ 30.47 Granted 5,164 31.47 Vested (19,089) 30.74 Non-vested at September 30, 2023 — Non-vested at January 1, 2022 14,007 28.42 Granted 4,441 33.78 Vested (4,523) 27.35 Non-vested at September 30, 2022 13,925 30.47 The following table presents information on the amounts expensed related to restricted stock units for the periods ended September 30, 2023 and 2022: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2023 2022 2023 2022 Amount expensed $ 246 $ 35 $ 321 $ 105 The expense recorded during the third quarter of 2023 reflects accelerated vesting of restricted stock units related to the departure of the former President and CEO in accordance with the terms of the applicable award agreements. Employee Stock Purchase Plan Arrow sponsors an ESPP under which employees may purchase Arrow's common stock at a discount below market price. The current amount of the discount is 5%. Under current accounting guidance, a stock purchase plan with a discount of 5% or less is not considered a compensatory plan. In April 2023, Arrow suspended the operation of the ESPP as a result of the now resolved delay in filing the 2022 Form 10-K and the Quarterly Report on Form 10-Q for the quarter ended March 31, 2023 and the related effects under applicable securities laws. In October 2023, the Board of Directors approved the adoption of a new Employee Stock Purchase Plan that is intended to satisfy all requirements of Section 423 of the Internal Revenue Code, which Arrow intends to make effective January 1, 2024. Under the new qualified plan, the amount of the discount will be 10%. Employee Stock Ownership Plan Arrow maintains an ESOP, pursuant to which substantially all employees of Arrow and its subsidiaries are eligible to participate upon satisfaction of applicable service requirements. The Company makes cash contributions to the ESOP each year.

Retirement Benefit Plans

Retirement Benefit Plans	9 Months Ended
	Sep. 30, 2023
Retirement Benefits [Abstract]
Retirement Benefit Plans	RETIREMENT BENEFIT PLANS (Dollars in Thousands) Arrow sponsors qualified and non-qualified defined benefit pension plans and other postretirement benefit plans for its employees. Arrow maintains a non-contributory pension plan, which covers substantially all employees. Effective December 1, 2002, all active participants in the qualified defined benefit pension plan were given a one-time irrevocable election to continue participating in the traditional plan design, for which benefits were based on years of service and the participant’s final compensation (as defined), or to begin participating in the new cash balance plan design. All employees who first participate in the plan after December 1, 2002 automatically participate in the cash balance plan design. The interest credits under the cash balance plan are based on the 30-year U.S. Treasury rate in effect for November of the prior year with a minimum interest credit of 3%. The service credits under the cash balance plan are equal to 6.0% of eligible salaries for employees who become participants on or after January 1, 2003. For employees in the plan prior to January 1, 2003, the service credits are scaled based on the age of the participant, and range from 6.0% to 12.0%. The funding policy is to contribute up to the maximum amount that can be deducted for federal income tax purposes and to make all payments required under The Employee Retirement Income Security Act (ERISA). Arrow also maintains a supplemental non-qualified unfunded retirement plan to provide eligible employees of Arrow and its subsidiaries with benefits in excess of qualified plan limits imposed by federal tax law. Arrow has multiple non-pension postretirement benefit plans. The health care, dental and life insurance plans are contributory, with participants’ contributions adjusted annually. Arrow’s policy is to fund the cost of postretirement benefits based on the current cost of the underlying policies. However, the health care plan provision allows for grandfathered participants to receive automatic increases of Company contributions each year based on the increase in inflation, limited to a maximum of 5%. As of December 31, 2022, Arrow uses the sex-distinct amount-weighted Pri-2012 mortality tables for employees, healthy retirees and contingent survivors, with mortality improvements projected using Scale MP-2021 on a generational basis for the Pension Plan and the sex-distinct amount-weighted White Collar tables for employees, healthy retirees and contingent survivors, with mortality improvements projected using Scale MP-2021 on a generational basis for the Select Executive Retirement Plan. Segment interest rates of 5.09%, 5.60%, 5.41% were used in determining the present value of a lump sum payment/annuitizing cash balance accounts as of December 31, 2022. Effective January 1, 2021, GFNB amended the Arrow Financial Corporation Employees' Pension Plan (the "Plan"). The Plan change was adopted January 1, 2021 and the amendment was valued as of December 31, 2020. The Plan amendment was as follows: Effective January 1, 2021, the benefit payable to or on behalf of each participant: • whose employment with the Employer (or any predecessor Employer, except as noted below) terminated on or before • who satisfied the requirements for early, normal, or late retirement as of such termination; • who never participated in the United Vermont Bancorporation Plan; and • who is, or whose beneficiary is, receiving monthly benefit payments from the Plan as of January 1, 2021 (including a The foregoing increase was applied to the monthly benefit actually payable to the participant, or to the participant's beneficiary, as of January 1, 2021, determined after all applicable adjustments, regardless of whether such benefit had been determined under the Company's plan or the plan of a predecessor employer that had been merged into the Plan. The plan amendment caused a $351,638 increase in the projected benefit obligation creating a positive service cost which will be amortized over 9.70 years (the average expected future service of active plan participants.) Effective January 1, 2021, GFNB amended the Arrow Financial Corporation Employees' Select Executive Retirement Plan. The plan change was adopted January 1, 2021 and the amendment was valued as of December 31, 2020. The plan amendment provides a special adjustment to the monthly benefit payment for certain retirees. The plan amendment caused a $122,797 increase in the projected benefit obligation creating a positive prior service cost which will be amortized over 12.5 years. Settlement accounting is required when lump sum payments during a fiscal year exceed that fiscal year's Service Cost plus Interest Cost components of the Net Periodic Pension Cost. For 2022, the sum of the Service Cost and Interest Cost was $3.3 million and the 2022 total lump sum payments exceeded that amount by the end of the third quarter 2022. The Plan therefore recognized in the 2022 Net Periodic Pension Cost a portion of the Unamortized Net (Gain)/Loss equal to the ratio of the projected benefit obligation for the participants that received a lump sum to the total projected benefit obligation. As of December 31, 2022, the Unamortized Net Loss prior to reflecting settlement accounting was $7.2 million. The ratio of the projected benefit obligation for participants that received a lump sum to the total projected benefit obligation was 8.06%. The effect of the settlement that was recognized in the 2022 Net Periodic Pension Cost was $577 thousand, which was fully reflected in the 2022 Net Periodic Cost. Settlement accounting was not required for the nine-month period ended September 30, 2023. The following tables provide the components of net periodic benefit costs for the three and nine-month periods ended September 30, 2023 and 2022: Employees' Select Executive Postretirement Pension Retirement Benefit Plan Plan Plans Net Periodic Benefit Cost For the Three Months Ended September 30, 2023: Service Cost 1 $ 398 $ 143 $ 14 Interest Cost 2 524 85 82 Expected Return on Plan Assets 2 (854) — — Amortization of Prior Service Cost 2 16 9 26 Amortization of Net Loss (Gain) 2 30 18 (88) Net Periodic Cost $ 114 $ 255 $ 34 Plan Contributions During the Period $ — $ 99 $ 28 For the Three Months Ended September 30, 2022: Service Cost 1 $ 469 $ 208 $ 23 Interest Cost 2 360 57 61 Expected Return on Plan Assets 2 (1,078) — — Amortization of Prior Service Cost 2 19 11 27 Amortization of Net Loss (Gain) 2 550 53 (39) Net Periodic Cost $ 320 $ 329 $ 72 Plan Contributions During the Period $ — $ 116 $ 43 Net Periodic Benefit Cost For the Nine Months Ended September 30, 2023: Service Cost 1 $ 1,195 $ 428 $ 42 Interest Cost 2 1,573 244 249 Expected Return on Plan Assets 2 (2,562) — — Amortization of Prior Service Cost 2 47 29 78 Amortization of Net Loss (Gain) 2 89 55 (265) Net Periodic Cost $ 342 $ 756 $ 104 Plan Contributions During the Period $ — $ 325 $ 75 Estimated Future Contributions in the Current Fiscal Year $ — $ 108 $ 25 For the Nine Months Ended September 30, 2022: Service Cost 1 $ 1,408 $ 626 $ 68 Interest Cost 2 1,079 169 185 Expected Return on Plan Assets 2 (3,235) — — Amortization of Prior Service Cost 2 58 33 80 Amortization of Net Loss (Gain) 2 550 159 (117) Net Periodic (Benefit) Cost $ (140) $ 987 $ 216 Plan Contributions During the Period $ — $ 347 $ 131 Footnotes: 1. Included in Salaries and Employee Benefits on the Consolidated Statements of Income 2. Included in Other Operating Expense on the Consolidated Statements of Income

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share	EARNINGS PER COMMON SHARE (In Thousands, Except Per Share Amounts) The following table presents a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per common share (EPS) for periods ended September 30, 2023 and 2022. When applicable, share and per share amounts have been adjusted for the September 26, 2023, 3% stock dividend. Earnings Per Share Three Months Ended Nine Months Ended September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Earnings Per Share - Basic: Net Income $ 7,743 $ 12,163 $ 22,352 $ 36,712 Weighted Average Shares - Basic 17,050 17,007 17,049 17,001 Earnings Per Share - Basic $ 0.46 $ 0.72 $ 1.31 $ 2.16 Earnings Per Share - Diluted: Net Income $ 7,743 $ 12,163 $ 22,352 $ 36,712 Weighted Average Shares - Basic 17,050 17,007 17,049 17,001 Dilutive Average Shares Attributable to Stock Options — 47 — 49 Weighted Average Shares - Diluted 17,050 17,054 17,049 17,050 Earnings Per Share - Diluted $ 0.46 $ 0.72 $ 1.31 $ 2.15

Fair Values

Fair Values	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Values	FAIR VALUES (Dollars In Thousands) Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Subtopic 820-10 defines fair value, establishes a framework for measuring fair value in GAAP and requires certain disclosures about fair value measurements. There are no nonfinancial assets or liabilities measured at fair value on a recurring basis. The only assets or liabilities that Arrow measured at fair value on a recurring basis at September 30, 2023, December 31, 2022 and September 30, 2022 were AFS securities, equity securities and derivatives. Arrow held no securities or liabilities for trading on such dates. The table below presents the financial instrument's fair value and the amounts within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement: Fair Value of Assets and Liabilities Measured on a Recurring and Nonrecurring Basis Fair Value Measurements at Reporting Date Using: Fair Value Quoted Prices Significant Other Significant Unobservable Inputs Fair Value of Assets and Liabilities Measured on a Recurring Basis: September 30, 2023 Assets: Securities Available-for Sale: U.S. Government & Agency Obligations $ 176,421 $ — $ 176,421 $ — State and Municipal Obligations 280 — 280 — Mortgage-Backed Securities 341,739 — 341,739 — Corporate and Other Debt Securities 800 — 800 — Total Securities Available-for-Sale 519,240 — 519,240 — Equity Securities 1,960 — 1,960 — Total Securities Measured on a Recurring Basis 521,200 — 521,200 — Derivative Assets 8,860 — 8,860 — Total Measured on a Recurring Basis $ 530,060 $ — $ 530,060 $ — Liabilities: Derivative Liabilities 8,733 — 8,733 — Total Measured on a Recurring Basis $ 8,733 $ — $ 8,733 $ — December 31, 2022 Assets: Securities Available-for Sale: U.S. Government & Agency Obligations $ 175,199 $ — $ 175,199 $ — State and Municipal Obligations 340 — 340 — Mortgage-Backed Securities 397,156 — 397,156 — Corporate and Other Debt Securities 800 — 800 — Total Securities Available-for-Sale 573,495 — 573,495 — Equity Securities 2,174 — 2,174 — Fair Value of Assets and Liabilities Measured on a Recurring and Nonrecurring Basis Fair Value Measurements at Reporting Date Using: Fair Value Quoted Prices Significant Other Significant Unobservable Inputs Total Securities Measured on a Recurring Basis 575,669 — 575,669 — Derivative Assets 7,506 — 7,506 — Total Measured on a Recurring Basis $ 583,175 $ — $ 583,175 $ — Liabilities: Derivative Liabilities $ 7,506 — $ 7,506 — Total Measured on a Recurring Basis $ 7,506 $ — $ 7,506 $ — September 30, 2022 Assets: Securities Available-for Sale: U.S. Government & Agency Obligations $ 163,965 $ — $ 163,965 $ — State and Municipal Obligations 340 — 340 — Mortgage-Backed Securities 409,949 — 409,949 — Corporate and Other Debt Securities 800 — 800 — Total Securities Available-for-Sale 575,054 — 575,054 — Equity Securities 2,126 — 2,126 — Total Securities Measured on a Recurring Basis 577,180 — 577,180 — Derivative Assets 8,508 — 8,508 — Total Measured on a Recurring Basis $ 585,688 $ — $ 585,688 $ — Liabilities: Derivative Liabilities 8,508 — 8,508 — Total Measured on a Recurring Basis $ 8,508 $ — $ 8,508 $ — Fair Value Quoted Prices Significant Other Significant Unobservable Inputs Gains (Losses) Recognized in Earnings Fair Value of Assets and Liabilities Measured on a Nonrecurring Basis: September 30, 2023 Collateral Dependent Evaluated Loans $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net 526 — — 526 — December 31, 2022 Collateral Dependent Impaired Loans $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net 593 — — 593 — September 30, 2022 Collateral Dependent Impaired Loans $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net 604 — — 604 — The fair value of financial instruments is determined under the following hierarchy: • Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 - Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; and, • Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Fair Value Methodology for Assets and Liabilities Measured on a Recurring Basis The fair value of Level 1 AFS securities are based on unadjusted, quoted market prices from exchanges in active markets. The fair value of Level 2 AFS securities are based on an independent bond and equity pricing service for identical assets or significantly similar securities and an independent equity pricing service for equity securities not actively traded. The pricing services use a variety of techniques to arrive at fair value including market maker bids, quotes and pricing models. Inputs to the pricing models include recent trades, benchmark interest rates, spreads and actual and projected cash flows. The fair value of Level 2 equities are based on the last observable price in open markets. The fair value of Level 2 equities are based on the last observable price in open markets. The fair value of Level 2 derivatives is determined using inputs that are observable in the market place obtained from third parties including yield curves, publicly available volatilities, and floating indexes. Fair Value Methodology for Assets and Liabilities Measured on a Nonrecurring Basis The fair value of collateral dependent evaluated loans and other real estate owned was based on third-party appraisals less estimated cost to sell. The appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. Other assets which might have been included in this table include mortgage servicing rights, goodwill and other intangible assets. Arrow evaluates each of these assets for impairment at least annually, with no impairment recognized for these assets at September 30, 2023, December 31, 2022 and September 30, 2022. Fair Value Methodology for Financial Instruments Not Measured on a Recurring or Nonrecurring Basis The fair value for HTM securities is determined utilizing an independent bond pricing service for identical assets or significantly similar securities. The pricing service uses a variety of techniques to arrive at fair value including market maker bids, quotes and pricing models. Inputs to the pricing models include recent trades, benchmark interest rates, spreads and actual and projected cash flows. ASU 2016-01 "Recognition and Measurement of Financial Assets and Financial Liabilities" requires that the fair value for loans must be disclosed using the "exit price" notion which is a reasonable estimate of what another party might pay in an orderly transaction. Fair values for loans are calculated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial, commercial real estate, residential mortgage, indirect auto and other consumer loans. Each loan category is further segmented into fixed and adjustable interest rate terms and by performing and nonperforming categories. The fair value of performing loans is calculated by determining the estimated future cash flow, which is the contractual cash flow adjusted for estimated prepayments. The discount rate is determined by starting with current market yields, and first adjusting for a liquidity premium. This premium is separately determined for each loan type. Then a credit loss component is determined utilizing the credit loss assumptions used in the allowance for credit loss model. Finally, a discount spread is applied separately for consumer loans vs. commercial loans based on market information and utilization of the swap curve. The fair value of time deposits is based on the discounted value of contractual cash flows, except that the fair value is limited to the extent that the customer could redeem the certificate after imposition of a premature withdrawal penalty. The discount rates are estimated using the FHLBNY yield curve, which is considered representative of Arrow’s time deposit rates. The fair value of all other deposits is equal to the carrying value. Within borrowings, the fair value of FHLBNY term advances is calculated by the FHLBNY and the fair value of the BTFP advances was determined using a discounted cash flow against the FHLB funding curve. The carrying value of all other borrowings approximate their market value. The carrying amount of FHLBNY and FRB stock approximates fair value. If the stock was redeemed, the Company will receive an amount equal to the par value of the stock. The book value of the outstanding trust preferred securities (Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts) are considered to approximate fair value since the interest rates are variable (currently indexed to SOFR) and Arrow is well-capitalized. Fair Value by Balance Sheet Grouping The following table presents a summary of the carrying amount, the fair value or an amount approximating fair value and the fair value hierarchy of Arrow’s financial instruments: Schedule of Fair Values by Balance Sheet Grouping Fair Value Hierarchy Carrying Value Fair Value Level 1 Level 2 Level 3 September 30, 2023 Cash and Cash Equivalents $ 294,739 $ 294,739 $ 294,739 $ — $ — Securities Available-for-Sale 519,240 519,240 — 519,240 — Securities Held-to-Maturity 140,577 134,811 — 134,811 — Equity Securities 1,960 1,960 — 1,960 — Federal Home Loan Bank and Federal 5,110 5,110 — 5,110 — Net Loans 3,107,505 2,867,016 — — 2,867,016 Accrued Interest Receivable 11,163 11,163 — 11,163 — Derivative Assets 8,860 8,860 8,860 Deposits 3,666,485 3,660,360 — 3,660,360 — Borrowings 174,300 173,709 — 173,709 — Junior Subordinated Obligations Issued 20,000 20,000 — 20,000 — Accrued Interest Payable 7,432 7,432 — 7,432 — Derivative Liabilities 8,733 8,733 — 8,733 — December 31, 2022 Cash and Cash Equivalents $ 64,660 $ 64,660 $ 64,660 $ — $ — Securities Available-for-Sale 573,495 573,495 — 573,495 — Securities Held-to-Maturity 175,364 171,623 — 171,623 — Equity Securities 2,174 2,174 2,174 Federal Home Loan Bank and Federal 6,064 6,064 — 6,064 — Net Loans 2,953,255 2,742,721 — — 2,742,721 Accrued Interest Receivable 9,890 9,890 — 9,890 — Derivative Assets 7,506 7,506 — 7,506 — Deposits 3,498,364 3,492,021 — 3,492,021 — Federal Home Loan Bank Term Advances 27,800 27,757 — 27,757 — Junior Subordinated Obligations Issued 20,000 20,000 — 20,000 — Accrued Interest Payable 357 357 — 357 — Derivative Liabilities 7,506 7,506 — 7,506 — September 30, 2022 Cash and Cash Equivalents $ 373,429 $ 373,429 $ 373,429 $ — $ — Securities Available-for-Sale 575,054 575,054 — 575,054 — Securities Held-to-Maturity 182,178 175,800 — 175,800 — Equity Securities 2,126 2,126 — 2,126 Federal Home Loan Bank and Federal 4,720 4,720 — 4,720 — Net Loans 2,895,562 2,714,587 — — 2,714,587 Accrued Interest Receivable 8,549 8,549 — 8,549 — Derivative Assets 8,508 8,508 — 8,508 — Deposits 3,795,105 3,785,960 — 3,785,960 — Federal Home Loan Bank Term Advances 25,000 24,833 — 24,833 — Junior Subordinated Obligations Issued 20,000 20,000 — 20,000 — Accrued Interest Payable 202 202 — 202 — Derivative Liabilities 8,508 8,508 — 8,508 —

Leases

Leases	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Leases	LEASES (Dollars In Thousands) Arrow is a lessee in its leases, which are mainly for financial services locations in addition to leases for corporate vehicles. These leases generally require Arrow to pay third-party expenses on behalf of the Lessor, which are referred to as variable payments. Under some leases, Arrow pays the variable payments to the lessor, and in other leases, Arrow pays the variable payments directly to the applicable third party. None of Arrow's current leases include any residual value guarantees or any subleases, and there are no significant rights and obligations of Arrow for leases that have not commenced as of the reporting date. Arrow leases two of its branch offices, at market rates, from Stewart’s Shops Corp. Mr. Gary C. Dake, President of Stewart’s Shops Corp., serves as a Director on the Board of Directors of Arrow and its two subsidiary banks. The following includes quantitative data related to Arrow's leases as of and for the nine months ended September 30, 2023 and September 30, 2022: Nine Months Ended Finance Lease Amounts: Classification September 30, 2023 September 30, 2022 Right-of-Use Assets Premises and Equipment, Net $ 4,504 $ 4,681 Lease Liabilities Finance Leases 5,080 5,131 Operating Lease Amounts: Right-of-Use Assets Other Assets $ 4,978 $ 5,889 Lease Liabilities Other Liabilities 5,179 6,082 Other Information: Cash Paid For Amounts Included In The Measurement Of Lease Liabilities: Operating Outgoing Cash Flows From Finance Leases $ 143 $ 145 Operating Outgoing Cash Flows From Operating Leases 781 1,041 Financing Outgoing Cash Flows From Finance Leases 39 38 Right-of-Use Assets Obtained In Exchange For New Finance Lease Liabilities — — Right-of-Use Assets Obtained In Exchange For New Operating Lease Liabilities 19 — Weighted-average Remaining Lease Term - Finance Leases (Yrs.) 26.54 27.50 Weighted-average Remaining Lease Term - Operating Leases (Yrs.) 11.45 11.36 Weighted-average Discount Rate—Finance Leases 3.75 % 3.75 % Weighted-average Discount Rate—Operating Leases 3.01 % 2.87 % Lease cost information for Arrow's leases is as follows: Three Months Ended Nine Months Ended September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Lease Cost: Finance Lease Cost: Reduction of Right-of-Use Assets $ 44 $ 44 $ 132 $ 133 Interest on Lease Liabilities 46 48 143 145 Operating Lease Cost 195 305 786 925 Short-term Lease Cost 11 9 46 32 Variable Lease Cost 58 86 179 253 Total Lease Cost $ 354 $ 492 $ 1,286 $ 1,488 Future Lease Payments at September 30, 2023 are as follows: Operating Leases Financing Leases Twelve Months Ended: 9/30/2024 $ 733 $ 247 9/30/2025 653 259 9/30/2026 590 268 9/30/2027 561 268 9/30/2028 486 268 Thereafter 3,212 7,063 Total Undiscounted Cash Flows $ 6,235 $ 8,373 Less: Net Present Value Adjustment 1,056 3,293 Lease Liability $ 5,179 $ 5,080
Leases	LEASES (Dollars In Thousands) Arrow is a lessee in its leases, which are mainly for financial services locations in addition to leases for corporate vehicles. These leases generally require Arrow to pay third-party expenses on behalf of the Lessor, which are referred to as variable payments. Under some leases, Arrow pays the variable payments to the lessor, and in other leases, Arrow pays the variable payments directly to the applicable third party. None of Arrow's current leases include any residual value guarantees or any subleases, and there are no significant rights and obligations of Arrow for leases that have not commenced as of the reporting date. Arrow leases two of its branch offices, at market rates, from Stewart’s Shops Corp. Mr. Gary C. Dake, President of Stewart’s Shops Corp., serves as a Director on the Board of Directors of Arrow and its two subsidiary banks. The following includes quantitative data related to Arrow's leases as of and for the nine months ended September 30, 2023 and September 30, 2022: Nine Months Ended Finance Lease Amounts: Classification September 30, 2023 September 30, 2022 Right-of-Use Assets Premises and Equipment, Net $ 4,504 $ 4,681 Lease Liabilities Finance Leases 5,080 5,131 Operating Lease Amounts: Right-of-Use Assets Other Assets $ 4,978 $ 5,889 Lease Liabilities Other Liabilities 5,179 6,082 Other Information: Cash Paid For Amounts Included In The Measurement Of Lease Liabilities: Operating Outgoing Cash Flows From Finance Leases $ 143 $ 145 Operating Outgoing Cash Flows From Operating Leases 781 1,041 Financing Outgoing Cash Flows From Finance Leases 39 38 Right-of-Use Assets Obtained In Exchange For New Finance Lease Liabilities — — Right-of-Use Assets Obtained In Exchange For New Operating Lease Liabilities 19 — Weighted-average Remaining Lease Term - Finance Leases (Yrs.) 26.54 27.50 Weighted-average Remaining Lease Term - Operating Leases (Yrs.) 11.45 11.36 Weighted-average Discount Rate—Finance Leases 3.75 % 3.75 % Weighted-average Discount Rate—Operating Leases 3.01 % 2.87 % Lease cost information for Arrow's leases is as follows: Three Months Ended Nine Months Ended September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Lease Cost: Finance Lease Cost: Reduction of Right-of-Use Assets $ 44 $ 44 $ 132 $ 133 Interest on Lease Liabilities 46 48 143 145 Operating Lease Cost 195 305 786 925 Short-term Lease Cost 11 9 46 32 Variable Lease Cost 58 86 179 253 Total Lease Cost $ 354 $ 492 $ 1,286 $ 1,488 Future Lease Payments at September 30, 2023 are as follows: Operating Leases Financing Leases Twelve Months Ended: 9/30/2024 $ 733 $ 247 9/30/2025 653 259 9/30/2026 590 268 9/30/2027 561 268 9/30/2028 486 268 Thereafter 3,212 7,063 Total Undiscounted Cash Flows $ 6,235 $ 8,373 Less: Net Present Value Adjustment 1,056 3,293 Lease Liability $ 5,179 $ 5,080

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (In Thousands) Arrow is exposed to certain risks arising from both its business operations and economic conditions. Arrow principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. Arrow manages economic risks, including interest rate, primarily by managing the amount, sources and duration of its assets and liabilities and through the use of derivative instruments. Specifically, Arrow enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Arrow's derivative financial instruments are used to manage differences in the amount, timing and duration of known or expected cash receipts and its known or expected cash payments principally related to certain fixed rate borrowings. Arrow also has interest rate derivatives that result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk in Arrow's assets or liabilities. Arrow manages a matched book with respect to its derivative instruments in order to minimize its net risk exposure resulting from such transactions. Derivatives Not Designated as Hedging Instruments Arrow enters into interest rate swap agreements with its commercial customers to provide them with a long-term fixed rate, while simultaneously entering into offsetting interest rate swap agreements with a counterparty to swap the fixed rate to a variable rate to manage interest rate exposure. These interest rate swap agreements are not designated as a hedge for accounting purposes. As the interest rate swap agreements have substantially equivalent and offsetting terms, they do not present any material exposure to Arrow's consolidated statements of income. Arrow records its interest rate swap agreements at fair value and is presented on a gross basis within other assets and other liabilities on the consolidated balance sheets. Changes in the fair value of assets and liabilities arising from these derivatives are included, net, in other income in the consolidated statement of income. The following table depicts the fair value adjustment recorded related to the notional amount of derivatives, not designated as hedging instruments, outstanding as well as the notional amount of the interest rate swap agreements: Derivatives Not Designated as Hedging Instruments - Interest Rate Swap Agreements September 30, 2023 December 31, 2022 September 30, 2022 Fair value adjustment included in other assets $ 8,733 $ 7,506 $ 8,508 Fair value adjustment included in other liabilities 8,733 7,506 8,508 Notional amount 124,350 127,763 134,406 Derivatives Designated as Hedging Instruments Arrow entered into two pay-fixed portfolio layer method fair value swaps, designated as hedging instruments, with a total notional amount of $250 million and $50 million, respectively, in the third quarter of 2023. Arrow is designating the fair value swaps under the portfolio layer method ("PLM"). Under PLM, the hedged items are designated as hedged layers of a closed portfolio of financial loans that are anticipated to remain outstanding for the designated hedged period. Adjustments will be made to record the swaps at fair value on the Consolidated Balance Sheets, with changes in fair value recognized in interest income. The carrying value of the fair value swaps on the Consolidated Balance Sheets will also be adjusted through interest income, based on changes in fair value attributable to changes in the hedged risk. The following table depicts the fair value adjustment recorded related to the notional amount of derivatives, designed as hedging instruments, outstanding as well as the notional amount of the interest rate swap agreements: Derivatives Designated as Hedging Instruments - Fair Value Agreements September 30, 2023 December 31, 2022 September 30, 2022 Fair value adjustment included in other assets $ 885 $ — $ — Fair value adjustment included in other liabilities — — — Notional amount 300,000 — — The following table summarizes the effect of the fair value hedging relationship recognized on the unaudited interim consolidated statement of income: Derivatives Designated as Hedging Instruments - Fair Value Agreements Nine Months Ended Twelve Months Ended Nine Months Ended September 30, 2023 December 31, 2022 September 30, 2022 Hedged Asset $ (758) $ — $ — Fair value derivative designated as hedging instrument 885 — — Total gain recognized in the consolidated statements of income with interest and fees on loans 127 — — The following table represents the carrying value of the portfolio layer method hedged assets and the cumulative fair value hedging adjustment included in the carrying value of the hedged asset: Derivatives Designated as Hedging Instruments - Fair Value Swap Agreements September 30, 2023 December 31, 2022 September 30, 2022 Carrying Value of Portfolio Layer Method Hedged Asset $ 299,242 $ — $ — Cumulative Fair Value Hedging Adjustment (758) — — Arrow has entered into interest rate swaps to synthetically fix the variable rate interest payments associated with $20 million in outstanding subordinated trust securities. These agreements are designated as cash flow hedges. For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in Accumulated Other Comprehensive Income (AOCI) and subsequently reclassified into interest expense in the same period during which the hedge transaction affects earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest expense as interest payments are made on Arrow's Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts borrowings. The following table indicates the effect of cash flow hedge accounting on AOCI and on the unaudited interim consolidated statement of income: Derivatives Designated as Hedging Instruments - Cash Flow Hedge Agreements Nine Months Ended Twelve Months Ended Nine Months Ended September 30, 2023 December 31, 2022 September 30, 2022 Amount of (loss) gain recognized in AOCI $ 125 $ 3,467 $ 3,737 Amount of (loss) gain reclassified from AOCI to interest expense (660) (204) (57)

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2023
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONSA member of the GFNB Board of Directors, is the Chief Executive Officer of the general contractor leading the multi-year renovation project to enhance and improve the downtown Glens Falls Main Campus. The recently completed reconstruction provides added energy efficiency and more collaborative work space. Through September 30, 2023, Arrow paid $2.70 million to this general contractor. GFNB is a subsidiary of Arrow.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income	$ 7,743	$ 12,163	$ 22,352	$ 36,712

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Accounting Policies (Policies)

Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Management's Use of Estimates	Management’s Use of Estimates The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. Management utilized estimates and assumptions in its evaluation of potential impairment of Arrow's right-of-use lease assets, goodwill and intangible assets. Our most significant estimate is the allowance for credit losses. Other estimates include the fair value of financial instruments, evaluation of pension and other post-retirement liabilities, an analysis of a need for a valuation allowance for deferred tax assets and a reserve for unfunded loan commitments recorded as an other liability. Actual results could differ from those estimates. A material estimate that is particularly susceptible to significant change in the near term is the allowance for credit losses. In connection with the determination of the allowance for credit losses management obtains economic forecasts from reliable sources and appraisals for properties. The allowance for credit losses is management’s best estimate of the life of loan losses as of the balance sheet date. While management uses available information to recognize losses on loans, future adjustments to the allowance for credit losses may be necessary based on changes in economic conditions.
Allowance for Credit Losses	Allowance for Credit Losses – Loans - Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (CECL) approach requires an estimate of the credit losses expected over the life of a loan (or pool of loans). It replaces the incurred loss approach’s threshold that required the recognition of a credit loss when it was probable that a loss event was incurred. The allowance for credit losses is a valuation account that is deducted from, or added to, the loans’ amortized cost basis to present the net lifetime amount expected to be collected on the loans. Credit losses are charged off against the allowance when management believes a loan balance is confirmed to be uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged off and expected to be charged off. Management estimates the allowance using relevant available information from internal and external sources related to past events, current conditions, and a reasonable and supportable single economic forecast. Historical credit loss experience provides the basis for the estimation of expected credit losses. Arrow's historical loss experience was supplemented with peer information when there was insufficient loss data for Arrow. Peer selection was based on a review of institutions with comparable loss experience as well as loan yield, bank size, portfolio concentration and geography. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in credit concentrations, delinquency level, collateral values and underwriting standards as well as changes in economic conditions or other relevant factors. Management judgment is required at each point in the measurement process. Portfolio segment is defined as the level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses. Upon adoption of CECL, management revised the manner in which loans were pooled for similar risk characteristics. Management developed portfolio segments for estimating loss based on type of borrower and collateral as follows: Commercial Loans Commercial Real Estate Loans Consumer Loans Residential Loans Further details related to loan portfolio segments is included in Note 5 Loans. Historical credit loss experience for both Arrow and segment-specific peers provides the basis for the estimation of expected credit losses. Arrow utilized regression analyses of peer data, of which Arrow is included, where observed credit losses and selected economic factors were utilized to determine suitable loss drivers for modeling lifetime probability of default (PD) rates. Arrow uses the discounted cash flow (DCF) method to estimate expected credit losses for the commercial, commercial real estate, and residential segments. For each of these loan segments, Arrow generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, PD, and segment-specific loss given default (LGD) risk factors. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data and adjusted, if necessary, based on the reasonable and supportable forecast of economic conditions. For the loan segments utilizing the DCF method, (commercial, commercial real estate, and residential) management utilizes externally developed economic forecast of the following economic factors as loss drivers: national unemployment, gross domestic product and Case-Shiller U.S. National Home Price Index ("HPI"). The economic forecast is applied over a reasonable and supportable forecast period. Arrow utilizes a six quarter reasonable and supportable forecast period with an eight quarter reversion to the historic mean on a straight-line basis. The combination of adjustments for credit expectations (default and loss) and timing expectations (prepayment, curtailment, and time to recovery) produces an expected cash flow stream at the instrument level. Instrument effective yield is calculated, net of the impacts of prepayment assumptions, and the instrument expected cash flows are then discounted at that effective yield to produce an instrument-level net present value (NPV) of expected cash flows. An allowance for credit loss is established for the difference between the instrument’s NPV and amortized cost basis. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring (TDR) will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by Arrow. Arrow uses the vintage analysis method to estimate expected credit losses for the consumer loan segment. The vintage method was selected since the loans within the consumer loan segment are homogeneous, not just by risk characteristic, but by loan structure. Under the vintage analysis method, a loss rate is calculated based on the quarterly net charge-offs to the outstanding loan balance for each vintage year over the lookback period. Once this periodic loss rate is calculated for each quarter in the lookback period, the periodic rates are averaged into the loss rate. The loss rate is then applied to the outstanding loan balances based on the loan's vintage year. Arrow maintains, over the life of the loan, the loss curve by vintage year. If estimated losses computed by the vintage method need to be adjusted based on current conditions and the reasonable and supportable economic forecast, these adjustments would be incorporated over a six quarter reasonable and supportable forecast period, reverting to historical losses using a straight-line method over an eight quarter period. Based on current conditions and the reasonable and supportable economic forecast, no adjustment to the loss rate for each vintage is currently required. The vintage and DCF models also consider the need to qualitatively adjust expected loss estimates for information not already captured in the quantitative loss estimation process. Qualitative considerations include limitations inherent in the quantitative model; trends experienced in nonperforming and delinquent loans; changes in value of underlying collateral; changes in lending policies and procedures; nature and composition of loans; portfolio concentrations that may affect loss experience across one or more components or the portfolio; the experience, ability and depth of lending management and staff; Arrow's credit review system; and the effect of external factors such as competition, legal and regulatory requirements. These qualitative factor adjustments may increase or decrease Arrow's estimate of expected credit losses so that the allowance for credit loss is reflective of the estimate of lifetime losses that exist in the loan portfolio at the balance sheet date. All loans not included in the vintage analysis method that exceed $250,000 which are on nonaccrual, are evaluated on an individual basis. For collateral dependent financial assets where Arrow has determined that foreclosure of the collateral is probable, or where the borrower is experiencing financial difficulty and Arrow expects repayment of the financial asset to be provided substantially through the operation or sale of the collateral, Arrow has elected a practical expedient to measure the allowance for credit loss as the difference between the fair value of the collateral less cost to sell, and the amortized cost basis of the asset as of the measurement date. In the event the repayment of a collateral dependent financial asset is expected to be provided substantially through the operating of the collateral, Arrow will use fair value of the collateral at the reporting date when recording the net carrying amount of the asset and determining the allowance for credit losses. When repayment is expected to be from the sale of the collateral, expected credit losses are calculated as the amount by which the amortized cost basis of the financial asset exceeds the fair value of the underlying collateral less estimated cost to sell. The allowance for credit losses may be zero if the fair value of the collateral at the measurement date exceeds the amortized cost basis of the financial asset. ASU No. 2022-02, “Troubled Debt Restructurings and Vintage Disclosures” (“ASU 2022-02”), was issued in March 2022 to provide updates on the accounting treatment for TDRs and related disclosures requirements, as well as modifying the disclosure requirement associated with the existing credit quality indicators “vintage” disclosure. With respect to TDRs, ASU 2022-02 eliminates the recognition and measurement guidance for TDRs under current GAAP and instead requires that Arrow evaluate whether the modification represents a new loan or a continuation of an existing loan, consistent with the current GAAP treatment for other loan modifications. In addition, ASU 2022-02 eliminates existing disclosure requirements on TDRs and replaces with enhanced disclosure requirements related to certain loan modifications made to borrowers experiencing financial difficulty. ASU 2022-02 also provides an update to the existing credit quality indicators “vintage” tabular disclosure requiring current period gross write-offs to be disclosed by year of origination for each loan segment. The provisions of ASU 2022-02 were effective January 1, 2023 and Arrow adopted the provisions on a prospective basis. Historical disclosures on TDRs were removed from this report in accordance with the provisions of this ASU. The adoption of this ASU did not have a material impact on the consolidated financial statements. Estimated Credit Losses on Off-Balance Sheet Credit Exposures Recognized as Other Liabilities - Arrow estimates expected credit losses over the contractual period in which Arrow has exposure to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by Arrow. The allowance for credit losses on off-balance sheet credit exposures recognized in other liabilities, is adjusted as an expense in other non-interest expense. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over their estimated lives. Estimating credit losses on unfunded commitments requires Arrow to consider the following categories of off-balance sheet credit exposure: unfunded commitments to extend credit, unfunded lines of credit, and standby letters of credit. Each of these unfunded commitments is then analyzed for a probability of funding to calculate a probable funding amount. The life of loan loss factor by related portfolio segment from the loan allowance for credit loss calculation is then applied to the probable funding amount to calculate the estimated credit losses on off-balance sheet credit exposures recognized as other liabilities. Accrued Interest Receivable - Upon adoption of CECL on January 1, 2021, Arrow made the following elections regarding accrued interest receivable: (1) presented accrued interest receivable balances separately within the other assets balance sheet line item; (2) excluded interest receivable that is included in amortized cost of financing receivables from related disclosures requirements and (3) continued its policy to write off accrued interest receivable by reversing interest income. For loans, write off typically occurs upon becoming over 90 to 120 days past due and therefore the amount of such write offs are immaterial. Historically, Arrow has not experienced uncollectible accrued interest receivable on investment securities. Allowance for Credit Losses – Held-to-Maturity (HTM) Debt Securities - Arrow's HTM debt securities are also required to utilize the CECL approach to estimate expected credit losses. Management measures expected credit losses on HTM debt securities on a collective basis by major security types that share similar risk characteristics, such as financial asset type and collateral type adjusted for current conditions and reasonable and supportable forecasts. Management classifies the HTM portfolio into the following major security types: U.S. government agency or U.S. government sponsored mortgage-backed and collateralized mortgage obligations securities, and state and municipal debt securities. The mortgage-backed and collateralized mortgage obligations HTM securities are issued by U.S. government entities and agencies. These securities are either explicitly or implicitly guaranteed by the U.S. government as to timely repayment of principal and interest, are highly rated by major rating agencies, and have a long history of no credit losses. Therefore, Arrow did not record a credit loss for these securities. State and municipal bonds carry an investment grade from an accredited ratings agency, primarily with an investment grade rating. In addition, Arrow has a limited amount of New York state local municipal bonds that are not rated. The estimate of expected credit losses on the HTM portfolio is based on the expected cash flows of each individual CUSIP over its contractual life and utilized a municipal loss forecast model for determining PD and LGD rates. Management may exercise discretion to make adjustments based on environmental factors. A calculated expected credit loss for individual securities was determined using the PD and LGD rates. Arrow determined that the expected credit loss on its municipal bond portfolio was de minimis, and therefore, an allowance for credit losses was not recorded. Allowance for Credit Losses – Available-for-Sale (AFS) Debt Securities - The impairment model for AFS debt securities differs from the CECL approach utilized by HTM debt securities since AFS debt securities are measured at fair value rather than amortized cost. For AFS debt securities in an unrealized loss position, Arrow first assesses whether it intends to sell, or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through income. For AFS debt securities that do not meet the aforementioned criteria, in making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, adverse conditions specifically related to the security, failure of the issuer of the debt security to make scheduled interest or principal payments, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. The cash flows are estimated using information relevant to the collectability of the security, including information about past events, current conditions and reasonable and supportable forecasts. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Investments in Federal Reserve Bank ("FRB") and Federal Home Loan Bank ("FHLB") stock are required for membership in those organizations and are carried at cost since there is no market value available. The FHLB New York ("FHLBNY") continues to pay dividends and repurchase stock. As such, the Company has not recognized any impairment on its holdings of FRB and FHLB stock.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	9 Months Ended
	Sep. 30, 2023
Cash and Cash Equivalents [Abstract]
Schedule of Cash and Cash Equivalents	The following table is the schedule of Cash and Cash Equivalents at September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Cash and Due From Banks $ 39,778 $ 31,886 $ 44,872 Interest-bearing Deposits at Banks 254,961 32,774 328,557 Total Cash and Cash Equivalents $ 294,739 64,660 373,429
Restrictions on Cash and Cash Equivalents	The following table is the schedule of Cash and Cash Equivalents at September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Cash and Due From Banks $ 39,778 $ 31,886 $ 44,872 Interest-bearing Deposits at Banks 254,961 32,774 328,557 Total Cash and Cash Equivalents $ 294,739 64,660 373,429

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-For-Sale	The following table is the schedule of Available-For-Sale Securities at September 30, 2023, December 31, 2022 and September 30, 2022: Available-For-Sale Securities U.S. Government & Agency State and Mortgage- Corporate Total September 30, 2023 Available-For-Sale Securities, $ 190,000 $ 280 $ 398,323 $ 1,000 $ 589,603 Gross Unrealized Gains — — 1 — 1 Gross Unrealized Losses (13,579) — (56,585) (200) (70,364) Available-For-Sale Securities, 176,421 280 341,739 800 519,240 Available-For-Sale Securities, 390,923 Maturities of Debt Securities, Within One Year $ 15,000 $ — $ 586 $ — $ 15,586 From 1 - 5 Years 175,000 — 215,671 — 390,671 From 5 - 10 Years — 280 182,066 1,000 183,346 Over 10 Years — — — — — Maturities of Debt Securities, Within One Year $ 14,736 $ — $ 569 $ — $ 15,305 From 1 - 5 Years 161,685 — 193,699 — 355,384 From 5 - 10 Years — 280 147,471 800 148,551 Over 10 Years — — — — — Securities in a Continuous Less than 12 Months $ 14,914 $ — $ 11,262 $ — $ 26,176 12 Months or Longer 161,506 — 330,190 800 492,496 Total $ 176,420 $ — $ 341,452 $ 800 $ 518,672 Number of Securities in a 25 — 154 1 180 Unrealized Losses on Less than 12 Months $ 86 $ — $ 317 $ — $ 403 12 Months or Longer 13,493 — 56,268 200 69,961 Total $ 13,579 $ — $ 56,585 $ 200 $ 70,364 Available-For-Sale Securities U.S. Government & Agency State and Mortgage- Corporate Total Disaggregated Details: US Agency Obligations, $ 190,000 US Agency Obligations, 176,421 Local Municipal Obligations, $ 280 Local Municipal Obligations, 280 US Government Agency $ 7,416 US Government Agency 6,885 Government Sponsored Entity 390,907 Government Sponsored Entity 334,854 Corporate Trust Preferred Securities, at Amortized Cost $ 1,000 Corporate Trust Preferred Securities, at Fair Value 800 December 31, 2022 Available-For-Sale Securities, $ 190,000 $ 340 $ 447,755 $ 1,000 $ 639,095 Gross Unrealized Gains 15 — 65 — 80 Gross Unrealized Losses (14,816) — (50,664) (200) (65,680) Available-For-Sale Securities, 175,199 340 397,156 800 573,495 Available-For-Sale Securities, 308,266 Securities in a Continuous Less than 12 Months $ 66,690 $ — $ 183,868 $ — $ 250,558 12 Months or Longer 93,493 — 199,262 800 293,555 Total $ 160,183 $ — $ 383,130 $ 800 $ 544,113 Number of Securities in a 23 — 150 1 174 Unrealized Losses on Less than 12 Months $ 3,310 $ — $ 18,756 $ — $ 22,066 12 Months or Longer 11,506 — 31,908 200 43,614 Total $ 14,816 $ — $ 50,664 $ 200 $ 65,680 Disaggregated Details: US Agency Obligations, $ 190,000 US Agency Obligations, 175,199 Local Municipal Obligations, $ 340 Local Municipal Obligations, 340 US Government Agency $ 7,934 Available-For-Sale Securities U.S. Government & Agency State and Mortgage- Corporate Total US Government Agency 7,433 Government Sponsored Entity 439,821 Government Sponsored Entity 389,723 Corporate Trust Preferred Securities, at Amortized Cost $ 1,000 Corporate Trust Preferred Securities, at Fair Value 800 September 30, 2022 Available-For-Sale Securities, $ 180,000 $ 340 $ 465,485 $ 1,000 $ 646,825 Gross Unrealized Gains — — 3 — 3 Gross Unrealized Losses (16,035) — (55,539) (200) (71,774) Available-For-Sale Securities, 163,965 340 409,949 800 575,054 Available-For-Sale Securities, 414,929 Securities in a Continuous Less than 12 Months $ 71,419 $ — $ 274,491 $ — $ 345,910 12 Months or Longer 92,545 — 135,329 800 228,674 Total $ 163,964 $ — $ 409,820 $ 800 $ 574,584 Number of Securities in a 24 — 156 1 181 Unrealized Losses on Securities Less than 12 Months $ 3,581 $ — $ 30,521 $ — $ 34,102 12 Months or Longer 12,454 — 25,018 200 37,672 Total $ 16,035 $ — $ 55,539 $ 200 $ 71,774 Disaggregated Details: US Agency Obligations, $ 180,000 US Agency Obligations, 163,965 Local Municipal Obligations, $ 340 Local Municipal Obligations, 340 US Government Agency $ 8,243 US Government Agency 7,842 Government Sponsored Entity 457,242 Government Sponsored Entity 402,107 Corporate Trust Preferred Securities, at Amortized Cost $ 1,000 Corporate Trust Preferred Securities, at Fair Value 800
Held-To-Maturity Securities	The following table is the schedule of Held-To-Maturity Securities at September 30, 2023, December 31, 2022 and September 30, 2022: Held-To-Maturity Securities State and Mortgage- Total September 30, 2023 Held-To-Maturity Securities, $ 131,017 $ 9,560 $ 140,577 Gross Unrealized Gains — — — Gross Unrealized Losses (5,204) (562) (5,766) Held-To-Maturity Securities, 125,813 8,998 134,811 Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value 117,723 Held-To-Maturity Securities, 111,957 Maturities of Debt Securities, Within One Year $ 56,686 $ — $ 56,686 From 1 - 5 Years 71,994 9,560 81,554 From 5 - 10 Years 2,308 — 2,308 Over 10 Years 29 — 29 Maturities of Debt Securities, Within One Year $ 55,883 $ — $ 55,883 From 1 - 5 Years 67,716 8,998 76,714 From 5 - 10 Years 2,185 — 2,185 Over 10 Years 29 — 29 Securities in a Continuous Less than 12 Months $ 1,575 $ — $ 1,575 12 Months or Longer 108,092 8,998 117,090 Total $ 109,667 $ 8,998 $ 118,665 Number of Securities in a 339 16 355 Unrealized Losses on Securities Less than 12 Months $ 86 $ — $ 86 12 Months or Longer 5,118 562 5,680 Total $ 5,204 $ 562 $ 5,766 Disaggregated Details: Municipal Obligations, at Amortized Cost $ 131,017 Municipal Obligations, at Fair Value 125,813 US Government Agency $ 3,292 US Government Agency 3,075 Held-To-Maturity Securities State and Mortgage- Total Government Sponsored Entity 6,268 Government Sponsored Entity 5,923 December 31, 2022 Held-To-Maturity Securities, $ 163,600 $ 11,764 $ 175,364 Gross Unrealized Gains 1 — 1 Gross Unrealized Losses (3,131) (611) (3,742) Held-To-Maturity Securities, 160,470 11,153 171,623 Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value 146,722 Held-To-Maturity Securities, 142,982 Securities in a Continuous Less than 12 Months $ 137,773 $ 11,153 $ 148,926 12 Months or Longer — — — Total $ 137,773 $ 11,153 $ 148,926 Number of Securities in a 397 16 413 Unrealized Losses on Less than 12 Months $ 3,131 $ 611 $ 3,742 12 Months or Longer — — — Total $ 3,131 $ 611 $ 3,742 Disaggregated Details: Municipal Obligations, at Amortized Cost $ 163,600 Held-To-Maturity Securities State and Mortgage- Total Municipal Obligations, at Fair Value 160,470 US Government Agency $ 3,898 US Government Agency 3,687 Government Sponsored Entity 7,866 Government Sponsored Entity 7,466 September 30, 2022 Held-To-Maturity Securities, $ 169,619 $ 12,559 $ 182,178 Gross Unrealized Gains 1 — 1 Gross Unrealized Losses (5,771) (608) (6,379) Held-To-Maturity Securities, 163,849 11,951 175,800 Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value 159,742 Held-To-Maturity Securities, 153,364 Securities in a Continuous Less than 12 Months $ 141,132 $ 11,951 $ 153,083 12 Months or Longer — — — Total $ 141,132 $ 11,951 $ 153,083 Number of Securities in a 419 16 435 Unrealized Losses on Less than 12 Months $ 5,771 $ 608 $ 6,379 12 Months or Longer — — — Total $ 5,771 $ 608 $ 6,379 September 30, 2022 Disaggregated Details: Municipal Obligations, at Amortized Cost $ 169,619 Municipal Obligations, at Fair Value 163,849 US Government Agency $ 4,115 US Government Agency 3,924 Government Sponsored Entity 8,444 Government Sponsored Entity 8,027
Debt Securities, Trading, and Equity Securities, FV-NI	The following table is the schedule of Equity Securities at September 30, 2023, December 31, 2022 and September 30, 2022: Equity Securities September 30, 2023 December 31, 2022 September 30, 2022 Equity Securities, at Fair Value $1,960 $2,174 $2,126
Unrealized Gain (Loss) on Investments	The following is a summary of realized and unrealized gains and losses recognized in net income on equity securities during the three and nine month periods ended September 30, 2023 and 2022: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2023 2022 2023 2022 Net (Loss) Gain on Equity Securities $ 71 $ 95 $ (214) $ 379 Less: Net gain recognized during the reporting period on equity securities sold during the period — — — — Unrealized net (loss) gain recognized during the reporting period on equity securities still held at the reporting date $ 71 $ 95 $ (214) $ 379

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Past Due Financing Receivables	The following two tables present loan balances outstanding as of September 30, 2023 and an analysis of the recorded investment in loans that are past due at these dates. Generally, Arrow considers a loan past due 30 or more days when the borrower is two payments past due. Loans held-for-sale of $165, $656 and $483 as of September 30, 2023, December 31, 2022 and September 30, 2022, respectively, are included in the residential real estate balances for current loans. Schedule of Past Due Loans by Loan Category Commercial Commercial Real Estate Consumer Residential Total September 30, 2023 Loans Past Due 30-59 Days $ 247 $ 13,787 $ 11,864 $ 1,692 $ 27,590 Loans Past Due 60-89 Days 59 1,977 4,953 18 7,007 Loans Past Due 90 or more Days 3 — 1,504 3,271 4,778 Total Loans Past Due 309 15,764 18,321 4,981 39,375 Current Loans 147,757 718,840 1,089,316 1,143,329 3,099,242 Total Loans $ 148,066 $ 734,604 $ 1,107,637 $ 1,148,310 $ 3,138,617 December 31, 2022 Loans Past Due 30-59 Days $ 48 $ 370 $ 13,657 $ 1,833 $ 15,908 Loans Past Due 60-89 Days 33 — 4,517 112 4,662 Loans Past Due 90 or more Days 44 — 3,503 4,790 8,337 Total Loans Past Due 125 370 21,677 6,735 28,907 Current Loans 140,168 706,652 1,043,458 1,064,022 2,954,300 Total Loans $ 140,293 $ 707,022 $ 1,065,135 $ 1,070,757 $ 2,983,207 September 30, 2022 Loans Past Due 30-59 Days $ 86 $ — $ 8,870 $ 393 $ 9,349 Loans Past Due 60-89 Days 80 — 4,397 1,266 5,743 Loans Past Due 90 or more Days — 235 1,708 3,487 5,430 Total Loans Past Due 166 235 14,975 5,146 20,522 Current Loans 138,807 678,982 1,040,610 1,045,873 2,904,272 Total Loans $ 138,973 $ 679,217 $ 1,055,585 $ 1,051,019 $ 2,924,794 The increase in loans past due 30-59 days within Commercial Real Estate is primarily attributable to one commercial loan relationship. The Company is actively working with the borrower to allow the borrower to stabilize the property’s cash flow. The property's collateral value exceeds the loan exposure. Schedule of Non Accrual Loans by Category Commercial September 30, 2023 Commercial Real Estate Consumer Residential Total Loans 90 or More Days Past Due $ — $ — $ — $ 251 $ 251 Nonaccrual Loans 3 — 1,572 4,448 6,023 Nonaccrual With No Allowance for Credit Loss 3 — 1,572 4,448 6,023 Interest Income on Nonaccrual Loans — — — — — December 31, 2022 Loans 90 or More Days Past Due $ 44 $ — $ — $ 1,113 $ 1,157 Nonaccrual Loans 8 3,110 3,503 4,136 10,757 September 30, 2022 Loans 90 or More Days Past Due $ — $ — $ — $ 514 $ 514 Nonaccrual Loans 9 3,401 1,708 3,694 8,812
Allowance for Credit Losses on Financing Receivables	The following table details activity in the allowance for credit losses on loans for the three and nine months ended September 30, 2023 and September 30, 2022: Allowance for Credit Losses Rollforward of the Allowance for Credit Losses for the Quarterly Period: Commercial Commercial Real Estate Consumer Residential Total Rollforward of the Allowance for Credit Losses for the Quarterly Period: June 30, 2023 $ 1,972 $ 15,697 $ 2,646 $ 10,855 $ 31,170 Charge-offs — — (1,204) — (1,204) Recoveries — — 792 — 792 Provision (139) (114) 301 306 354 September 30, 2023 $ 1,833 $ 15,583 $ 2,535 $ 11,161 $ 31,112 December 31, 2022 $ 1,961 $ 15,213 $ 2,585 $ 10,193 $ 29,952 Charge-offs $ — $ — $ (3,806) $ (6) $ (3,812) Recoveries $ — $ — $ 2,116 $ — $ 2,116 Provision $ (128) $ 370 $ 1,640 $ 974 $ 2,856 September 30, 2023 $ 1,833 $ 15,583 $ 2,535 $ 11,161 $ 31,112 June 30, 2022 $ 2,465 $ 13,936 $ 2,358 $ 9,331 $ 28,090 Charge-offs (44) — (1,103) — (1,147) Recoveries — — 574 — 574 Provision (416) 930 692 509 1,715 September 30, 2022 $ 2,005 $ 14,866 $ 2,521 $ 9,840 $ 29,232 December 31, 2021 $ 2,298 $ 13,136 $ 2,402 $ 9,445 $ 27,281 Charge-offs $ (48) $ — $ (2,805) $ (30) $ (2,883) Recoveries $ 26 $ — $ 1,419 $ — $ 1,445 Provision $ (271) $ 1,730 $ 1,505 $ 425 $ 3,389 September 30, 2022 $ 2,005 $ 14,866 $ 2,521 $ 9,840 $ 29,232 The following tables present the amortized cost basis of collateral-dependent loans by class of loans as of September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 Collateral Type -Residential Real Estate Collateral Type - Commercial Real Estate Total Loans Commercial $ — $ — $ — Commercial Real Estate — — — Consumer — — — Residential 1,949 — 1,949 Total $ 1,949 $ — $ 1,949 December 31, 2022 Collateral Type -Residential Real Estate Collateral Type - Commercial Real Estate Total Loans Commercial $ — $ — $ — Commercial Real Estate — 3,110 3,110 Consumer — — — Residential 1,963 — 1,963 Total $ 1,963 $ 3,110 $ 5,073 September 30, 2022 Collateral Type -Residential Real Estate Collateral Type - Commercial Real Estate Total Loans Commercial $ — $ — $ — Commercial Real Estate — 3,166 3,166 Consumer — — — Residential 1,494 — 1,494 Total $ 1,494 $ 3,166 $ 4,660 Allowance for Credit Losses - Collectively and Individually Evaluated Commercial Commercial Real Estate Consumer Residential Total September 30, 2023 Ending Loan Balance - Collectively Evaluated $ 148,066 $ 734,604 $ 1,107,637 $ 1,146,361 $ 3,136,668 Allowance for Credit Losses - Loans Collectively Evaluated 1,833 15,583 2,535 11,161 31,112 Ending Loan Balance - Individually Evaluated — — — 1,949 1,949 Allowance for Credit Losses - Loans Individually Evaluated — — — — — December 31, 2022 Ending Loan Balance - Collectively Evaluated $ 140,293 $ 703,912 $ 1,065,135 $ 1,068,794 $ 2,978,134 Allowance for Credit Losses - Loans Collectively Evaluated 1,961 15,213 2,585 10,193 $ 29,952 Ending Loan Balance - Individually Evaluated — 3,110 — 1,963 5,073 Allowance for Credit Losses - Loans Individually Evaluated — — — — — September 30, 2022 Ending Loan Balance - Collectively Evaluated $ 138,973 $ 676,051 $ 1,055,585 $ 1,049,525 $ 2,920,134 Allowance for Credit Losses - Loans Collectively Evaluated 2,005 14,866 2,521 9,840 29,232 Ending Loan Balance - Individually Evaluated — 3,166 — 1,494 4,660 Allowance for Credit Losses - Loans Individually Evaluated — — — — —
Financing Receivable Credit Quality Indicators	The following tables present credit quality indicators by total loans amortized cost basis by origination year as of September 30, 2023, December 31, 2022 and September 30, 2022: Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loan Converted to Term Total September 30, 2023 2023 2022 2021 2020 2019 Prior Commercial: Risk rating Satisfactory $ 37,300 $ 36,456 $ 23,602 $ 10,622 $ 4,799 $ 21,459 $ 10,328 $ — $ 144,566 Special mention — — — 128 — — — — 128 Substandard — — — — 26 3,245 101 — 3,372 Doubtful — — — — — — — — — Total Commercial Loans $ 37,300 $ 36,456 $ 23,602 $ 10,750 $ 4,825 $ 24,704 $ 10,429 $ — $ 148,066 Current-period gross charge-offs $ — $ — $ — $ — $ — $ — $ — Commercial Real Estate: Risk rating Satisfactory $ 57,761 $ 157,741 $ 106,128 $ 121,968 $ 41,827 $ 184,590 $ 2,035 $ — $ 672,050 Special mention — 3,123 — — — 4,150 — — 7,273 Substandard — 9,299 1,685 2,590 797 40,411 499 — 55,281 Doubtful — — — — — — — — — Total Commercial Real Estate Loans $ 57,761 $ 170,163 $ 107,813 $ 124,558 $ 42,624 $ 229,151 $ 2,534 $ — $ 734,604 Current-period gross charge-offs $ — $ — $ — $ — $ — $ — $ — Consumer: Risk rating Performing $ 322,084 $ 384,607 $ 216,234 $ 107,743 $ 53,646 $ 21,276 $ — $ — $ 1,105,590 Nonperforming 109 625 562 192 68 33 458 — 2,047 Total Consumer Loans $ 322,193 $ 385,232 $ 216,796 $ 107,935 $ 53,714 $ 21,309 $ 458 $ — $ 1,107,637 Current-period gross charge-offs $ 192 $ 915 $ 1,689 $ 477 $ 299 $ 234 $ 3,806 Residential: Risk rating Performing $ 106,267 $ 235,027 $ 191,780 $ 118,517 $ 76,518 $ 305,076 $ 108,098 $ — $ 1,141,283 Nonperforming — — 2,770 1,006 598 2,152 501 — 7,027 Total Residential Loans $ 106,267 $ 235,027 $ 194,550 $ 119,523 $ 77,116 $ 307,228 $ 108,599 $ — $ 1,148,310 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 6 $ 6 Total Loans $ 523,521 $ 826,878 $ 542,761 $ 362,766 $ 178,279 $ 582,392 $ 122,020 $ — $ 3,138,617 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loan Converted to Term Total December 31, 2022 2022 2021 2020 2019 2018 Prior Commercial: Risk rating Satisfactory $ 42,038 $ 28,718 $ 16,870 $ 7,857 $ 8,129 $ 20,379 $ 8,909 $ — $ 132,900 Special mention — — — — — 30 30 — 60 Substandard — — 255 478 — 3,464 3,136 — 7,333 Doubtful — — — — — — — — — Total Commercial Loans $ 42,038 $ 28,718 $ 17,125 $ 8,335 $ 8,129 $ 23,873 $ 12,075 $ — $ 140,293 Commercial Real Estate: Risk rating Satisfactory $ 152,858 $ 115,111 $ 121,811 $ 43,647 $ 63,913 $ 159,876 $ 1,603 $ — $ 658,819 Special mention 9,678 — — — 789 241 — — 10,708 Substandard 607 — 5,807 812 4,371 25,677 221 — 37,495 Doubtful — — — — — — — — — Total Commercial Real Estate Loans $ 163,143 $ 115,111 $ 127,618 $ 44,459 $ 69,073 $ 185,794 $ 1,824 $ — $ 707,022 Consumer: Risk rating Performing $ 482,530 $ 284,831 $ 154,819 $ 88,165 $ 38,852 $ 12,032 $ 504 $ — $ 1,061,733 Nonperforming 758 1,468 607 325 157 87 — — 3,402 Total Consumer Loans $ 483,288 $ 286,299 $ 155,426 $ 88,490 $ 39,009 $ 12,119 $ 504 $ — $ 1,065,135 Residential: Risk rating Performing $ 210,565 $ 198,195 $ 128,372 $ 82,965 $ 74,281 $ 259,787 $ 111,563 $ — $ 1,065,728 Nonperforming — 255 939 597 520 2,311 407 — 5,029 Total Residential Loans $ 210,565 $ 198,450 $ 129,311 $ 83,562 $ 74,801 $ 262,098 $ 111,970 $ — $ 1,070,757 Total Loans $ 899,034 $ 628,578 $ 429,480 $ 224,846 $ 191,012 $ 483,884 $ 126,373 $ — $ 2,983,207 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized Cost Basis Revolving Loan Converted to Term Total September 30, 2022 2022 2021 2020 2019 2018 Prior Commercial: Risk rating Satisfactory $ 34,589 $ 31,762 $ 26,654 $ 7,554 $ 9,605 $ 11,194 $ 8,008 $ — $ 129,366 Special mention — — — — — 35 35 — 70 Substandard — 3,318 479 445 — 37 5,258 — 9,537 Doubtful — — — — — — — — — Total Commercial Loans $ 34,589 $ 35,080 $ 27,133 $ 7,999 $ 9,605 $ 11,266 $ 13,301 $ — $ 138,973 Commercial Real Estate: Risk rating Satisfactory $ 106,549 $ 136,306 $ 247,780 $ 40,959 $ 30,667 $ 64,934 $ 3,052 $ — $ 630,247 Special mention 9,801 — 2,973 — 4,315 1,425 — — 18,514 Substandard 9,531 4,723 11,352 1,133 93 3,403 221 — 30,456 Doubtful — — — — — — — — — Total Commercial Real Estate Loans $ 125,881 $ 141,029 $ 262,105 $ 42,092 $ 35,075 $ 69,762 $ 3,273 $ — $ 679,217 Consumer: Risk rating Performing $ 406,206 $ 309,006 $ 172,974 $ 101,458 $ 47,874 $ 15,933 $ 483 $ — $ 1,053,934 Nonperforming 268 583 351 304 58 87 — — 1,651 Total Consumer Loans $ 406,474 $ 309,589 $ 173,325 $ 101,762 $ 47,932 $ 16,020 $ 483 $ — $ 1,055,585 Residential: Risk rating Performing $ 163,702 $ 209,408 $ 173,435 $ 84,370 $ 61,907 $ 232,021 $ 122,191 $ — $ 1,047,034 Nonperforming — 257 939 28 318 2,268 175 — 3,985 Total Residential Loans $ 163,702 $ 209,665 $ 174,374 $ 84,398 $ 62,225 $ 234,289 $ 122,366 $ — $ 1,051,019 Total Loans $ 730,646 $ 695,363 $ 636,937 $ 236,251 $ 154,837 $ 331,337 $ 139,423 $ — $ 2,924,794

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule of Debt	Schedule of Borrowings: September 30, 2023 December 31, 2022 September 30, 2022 Balance: BTFP Advances 150,000 — — FHLBNY Overnight Advances 10,000 27,000 — FHLBNY Term Advances 14,300 27,800 25,000 Total Borrowings $ 174,300 $ 54,800 $ 25,000 Maximum Borrowing Capacity: Federal Funds Purchased $ 52,000 $ 52,000 $ 52,000 Federal Home Loan Bank of New York 607,596 663,259 799,544 Federal Reserve Bank of New York 722,493 649,112 650,642 Available Borrowing Capacity: Federal Funds Purchased $ 52,000 $ 52,000 $ 52,000 Federal Home Loan Bank of New York 449,296 608,458 774,544 Federal Reserve Bank of New York 722,493 649,112 650,642
Schedule of Maturities of Short-Term Debt	Maturity Schedule of FHLBNY Term Advances : Balances Weighted Average Rate Final Maturity 9/30/2023 12/31/2022 9/30/2022 9/30/2023 12/31/2022 9/30/2022 First Year $ 7,800 $ 27,800 $ 5,000 5.14 % 2.70 % 1.81 % Second Year 6,500 — 20,000 5.59 % — % 1.75 % Total $ 14,300 $ 27,800 $ 25,000 5.38 % 2.70 % 1.77 %
Schedule of Long-Term Debt Instruments	Schedule of Guaranteed Preferred Beneficial Interests in Corporation's Junior Subordinated Debentures September 30, 2023 December 31, 2022 September 30, 2022 ACST II Balance $ 10,000 $ 10,000 $ 10,000 Period End: Variable Interest Rate 8.81 % 6.82 % 6.82 % Fixed Interest Rate resulting from cash flow hedge agreement 4.00 % 4.00 % 4.00 % ACST III Balance $ 10,000 $ 10,000 $ 10,000 Period End: Variable Interest Rate 7.66 % 5.67 % 5.67 % Fixed Interest Rate resulting from cash flow hedge agreement 2.86 % 2.86 % 2.86 %

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Guarantor Obligations	The following table presents the notional amount and fair value of Arrow's off-balance sheet commitments to extend credit and commitments under standby letters of credit as of September 30, 2023, December 31, 2022 and September 30, 2022: Commitments to Extend Credit and Letters of Credit September 30, 2023 December 31, 2022 September 30, 2022 Notional Amount: Commitments to Extend Credit $ 464,661 $ 424,197 $ 440,167 Standby Letters of Credit 4,201 3,627 3,445 Fair Value: Commitments to Extend Credit $ — $ — $ — Standby Letters of Credit 10 2 —

Comprehensive Loss (Tables)

Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2023
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Comprehensive Income	The following table presents the components of other comprehensive loss for the three and nine month periods ended September 30, 2023 and 2022: Schedule of Comprehensive Loss Three Months Ended September 30 Nine Months Ended September 30, Tax Tax Before-Tax Benefit Net-of-Tax Before-Tax Benefit Net-of-Tax Amount (Expense) Amount Amount (Expense) Amount 2023 Net Unrealized Securities Holding Loss on Securities Available-for-Sale Arising During the Period $ (7,796) $ 2,010 $ (5,786) $ (4,763) $ 1,227 $ (3,536) Net Unrealized Gain on Cash Flow Swap 846 (221) 625 125 (34) 91 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense 242 (61) 181 660 (169) 491 Amortization of Net Retirement Plan Actuarial Gain (40) 10 (30) (121) 31 (90) Amortization of Net Retirement Plan Prior Service Cost 51 (12) 39 154 (39) 115 Other Comprehensive Loss $ (6,697) $ 1,726 $ (4,971) $ (3,945) $ 1,016 $ (2,929) 2022 Net Unrealized Securities Holding Loss on Securities Available-for-Sale Arising During the Period $ (27,945) $ 7,144 $ (20,801) $ (70,945) $ 18,137 $ (52,808) Net Unrealized Gain on Cash Flow Swap 1,046 (268) 778 3,737 (956) 2,781 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense 75 (20) 55 57 (15) 42 Amortization of Net Retirement Plan Actuarial Loss 564 (144) 420 592 (151) 441 Amortization of Net Retirement Plan Prior Service Cost 57 (15) 42 171 (44) 127 Other Comprehensive Loss $ (26,203) $ 6,697 $ (19,506) $ (66,388) $ 16,971 $ (49,417)
Changes in Accumulated Other Comprehensive Income By Component	The following table presents the changes in accumulated other comprehensive (loss) income by component: Changes in Accumulated Other Comprehensive (Loss) Income by Component (1) Unrealized Loss on Available-for-Sale Securities Unrealized Gain on Cash Flow Swap Defined Benefit Plan Items Total Net Actuarial Loss Net Prior Service Cost For the quarter-to-date periods ended: June 30, 2023 $ (46,591) $ 3,830 $ (4,527) $ (325) $ (47,613) Other comprehensive income or loss before reclassifications (5,786) 625 — — (5,161) Amounts reclassified from accumulated other comprehensive income or loss — 181 (30) 39 190 Net current-period other comprehensive income or loss (5,786) 806 (30) 39 (4,971) September 30, 2023 $ (52,377) $ 4,636 $ (4,557) $ (286) $ (52,584) June 30, 2022 $ (32,621) $ 3,310 $ 660 $ (913) $ (29,564) Other comprehensive (loss) or income before reclassifications (20,801) 778 — — (20,023) Amounts reclassified from accumulated other comprehensive income or loss — 55 420 42 517 Net current-period other comprehensive (loss) or income (20,801) 833 420 42 (19,506) September 30, 2022 $ (53,422) $ 4,143 $ 1,080 $ (871) $ (49,070) For the Year-To-Date periods ended: December 31, 2022 $ (48,841) $ 4,054 $ (4,467) $ (401) $ (49,655) Other comprehensive income or loss before reclassifications (3,536) 91 — — (3,445) Amounts reclassified from accumulated other comprehensive income or loss — 491 (90) 115 516 Net current-period other comprehensive income or loss (3,536) 582 (90) 115 (2,929) September 30, 2023 $ (52,377) $ 4,636 $ (4,557) $ (286) $ (52,584) December 31, 2021 $ (614) $ 1,320 $ 639 $ (998) $ 347 Other comprehensive income or loss before reclassifications (52,808) 2,781 — — (50,027) Amounts reclassified from accumulated other comprehensive income or loss — 42 441 127 610 Net current-period other comprehensive income or loss (52,808) 2,823 441 127 (49,417) September 30, 2022 $ (53,422) $ 4,143 $ 1,080 $ (871) $ (49,070)
Reclassification out of Accumulated Other Comprehensive Income	The following table presents the reclassifications out of accumulated other comprehensive income or loss: Reclassifications Out of Accumulated Other Comprehensive Income or Loss Details about Accumulated Other Comprehensive Income or Loss Components Amounts Reclassified from Accumulated Other Comprehensive Income or Loss Affected Line Item in the Statement Where Net Income Is Presented For the quarter-to-date periods ended: September 30, 2023 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (242) Interest expense Amortization of defined benefit pension items: Prior-service costs (51) (1) Salaries and Employee Benefits Actuarial loss 40 (1) Salaries and Employee Benefits (253) Total before Tax 63 Provision for Income Taxes Total reclassifications for the period $ (190) Net of Tax September 30, 2022 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (75) Interest expense Amortization of defined benefit pension items: Prior-service costs $ (57) (1) Salaries and Employee Benefits Actuarial loss (564) (1) Salaries and Employee Benefits (696) Total before Tax 179 Provision for Income Taxes Total reclassifications for the period $ (517) Net of Tax For the Year-to-date periods ended: September 30, 2023 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (660) Interest expense Amortization of defined benefit pension items: Prior-service costs (154) (1) Salaries and Employee Benefits Actuarial loss 121 (1) Salaries and Employee Benefits (693) Total before Tax 177 Provision for Income Taxes Total reclassifications for the period $ (516) Net of Tax September 30, 2022 Reclassification of Net Unrealized Gain on Cash Flow Hedge Agreements to Interest Expense $ (57) Interest expense Amortization of defined benefit pension items: Prior-service costs (171) (1) Salaries and Employee Benefits Actuarial loss (592) (1) Salaries and Employee Benefits (820) Total before Tax 210 Provision for Income Taxes Total reclassifications for the period $ (610) Net of Tax (1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The following table summarizes information about stock option activity for the year to date period ended September 30, 2023: Shares Weighted Average Exercise Price Outstanding at January 1, 2023 287,444 $ 28.56 Granted 57,680 31.47 Exercised (3,885) 20.95 Forfeited (35,139) 30.91 Outstanding at September 30, 2023 306,100 28.94 Vested at Period-End 207,642 27.81 Expected to Vest 98,458 31.32 Stock Options Granted Weighted Average Grant Date Information: Fair Value of Options Granted $ 7.78 Fair Value Assumptions: Dividend Yield 3.30 % Expected Volatility 28.38 % Risk Free Interest Rate 3.57 % Expected Lives (in years) 8.34
Schedule of Stock Options Roll Forward	The following table summarizes information about stock option activity for the year to date period ended September 30, 2023: Shares Weighted Average Exercise Price Outstanding at January 1, 2023 287,444 $ 28.56 Granted 57,680 31.47 Exercised (3,885) 20.95 Forfeited (35,139) 30.91 Outstanding at September 30, 2023 306,100 28.94 Vested at Period-End 207,642 27.81 Expected to Vest 98,458 31.32 Stock Options Granted Weighted Average Grant Date Information: Fair Value of Options Granted $ 7.78 Fair Value Assumptions: Dividend Yield 3.30 % Expected Volatility 28.38 % Risk Free Interest Rate 3.57 % Expected Lives (in years) 8.34
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table presents information on the amounts expensed related to stock options for the three and nine month periods ended September 30, 2023 and 2022: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2023 2022 2023 2022 Amount expensed $ 24 $ 79 $ 196 $ 233 The following table presents information on the amounts expensed related to restricted stock units for the periods ended September 30, 2023 and 2022: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2023 2022 2023 2022 Amount expensed $ 246 $ 35 $ 321 $ 105
Schedule of Nonvested Restricted Stock Units Activity	The following table summarizes information about restricted stock unit activity for the periods ended September 30, 2023 and 2022: Restricted Stock Units Weighted Average Grant Date Fair Value Non-vested at January 1, 2023 13,925 $ 30.47 Granted 5,164 31.47 Vested (19,089) 30.74 Non-vested at September 30, 2023 — Non-vested at January 1, 2022 14,007 28.42 Granted 4,441 33.78 Vested (4,523) 27.35 Non-vested at September 30, 2022 13,925 30.47

Retirement Benefit Plans (Table

Retirement Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2023
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures	The following tables provide the components of net periodic benefit costs for the three and nine-month periods ended September 30, 2023 and 2022: Employees' Select Executive Postretirement Pension Retirement Benefit Plan Plan Plans Net Periodic Benefit Cost For the Three Months Ended September 30, 2023: Service Cost 1 $ 398 $ 143 $ 14 Interest Cost 2 524 85 82 Expected Return on Plan Assets 2 (854) — — Amortization of Prior Service Cost 2 16 9 26 Amortization of Net Loss (Gain) 2 30 18 (88) Net Periodic Cost $ 114 $ 255 $ 34 Plan Contributions During the Period $ — $ 99 $ 28 For the Three Months Ended September 30, 2022: Service Cost 1 $ 469 $ 208 $ 23 Interest Cost 2 360 57 61 Expected Return on Plan Assets 2 (1,078) — — Amortization of Prior Service Cost 2 19 11 27 Amortization of Net Loss (Gain) 2 550 53 (39) Net Periodic Cost $ 320 $ 329 $ 72 Plan Contributions During the Period $ — $ 116 $ 43 Net Periodic Benefit Cost For the Nine Months Ended September 30, 2023: Service Cost 1 $ 1,195 $ 428 $ 42 Interest Cost 2 1,573 244 249 Expected Return on Plan Assets 2 (2,562) — — Amortization of Prior Service Cost 2 47 29 78 Amortization of Net Loss (Gain) 2 89 55 (265) Net Periodic Cost $ 342 $ 756 $ 104 Plan Contributions During the Period $ — $ 325 $ 75 Estimated Future Contributions in the Current Fiscal Year $ — $ 108 $ 25 For the Nine Months Ended September 30, 2022: Service Cost 1 $ 1,408 $ 626 $ 68 Interest Cost 2 1,079 169 185 Expected Return on Plan Assets 2 (3,235) — — Amortization of Prior Service Cost 2 58 33 80 Amortization of Net Loss (Gain) 2 550 159 (117) Net Periodic (Benefit) Cost $ (140) $ 987 $ 216 Plan Contributions During the Period $ — $ 347 $ 131 Footnotes: 1. Included in Salaries and Employee Benefits on the Consolidated Statements of Income 2. Included in Other Operating Expense on the Consolidated Statements of Income

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per common share (EPS) for periods ended September 30, 2023 and 2022. When applicable, share and per share amounts have been adjusted for the September 26, 2023, 3% stock dividend. Earnings Per Share Three Months Ended Nine Months Ended September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Earnings Per Share - Basic: Net Income $ 7,743 $ 12,163 $ 22,352 $ 36,712 Weighted Average Shares - Basic 17,050 17,007 17,049 17,001 Earnings Per Share - Basic $ 0.46 $ 0.72 $ 1.31 $ 2.16 Earnings Per Share - Diluted: Net Income $ 7,743 $ 12,163 $ 22,352 $ 36,712 Weighted Average Shares - Basic 17,050 17,007 17,049 17,001 Dilutive Average Shares Attributable to Stock Options — 47 — 49 Weighted Average Shares - Diluted 17,050 17,054 17,049 17,050 Earnings Per Share - Diluted $ 0.46 $ 0.72 $ 1.31 $ 2.15

Fair Values (Tables)

Fair Values (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	The table below presents the financial instrument's fair value and the amounts within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement: Fair Value of Assets and Liabilities Measured on a Recurring and Nonrecurring Basis Fair Value Measurements at Reporting Date Using: Fair Value Quoted Prices Significant Other Significant Unobservable Inputs Fair Value of Assets and Liabilities Measured on a Recurring Basis: September 30, 2023 Assets: Securities Available-for Sale: U.S. Government & Agency Obligations $ 176,421 $ — $ 176,421 $ — State and Municipal Obligations 280 — 280 — Mortgage-Backed Securities 341,739 — 341,739 — Corporate and Other Debt Securities 800 — 800 — Total Securities Available-for-Sale 519,240 — 519,240 — Equity Securities 1,960 — 1,960 — Total Securities Measured on a Recurring Basis 521,200 — 521,200 — Derivative Assets 8,860 — 8,860 — Total Measured on a Recurring Basis $ 530,060 $ — $ 530,060 $ — Liabilities: Derivative Liabilities 8,733 — 8,733 — Total Measured on a Recurring Basis $ 8,733 $ — $ 8,733 $ — December 31, 2022 Assets: Securities Available-for Sale: U.S. Government & Agency Obligations $ 175,199 $ — $ 175,199 $ — State and Municipal Obligations 340 — 340 — Mortgage-Backed Securities 397,156 — 397,156 — Corporate and Other Debt Securities 800 — 800 — Total Securities Available-for-Sale 573,495 — 573,495 — Equity Securities 2,174 — 2,174 — Fair Value of Assets and Liabilities Measured on a Recurring and Nonrecurring Basis Fair Value Measurements at Reporting Date Using: Fair Value Quoted Prices Significant Other Significant Unobservable Inputs Total Securities Measured on a Recurring Basis 575,669 — 575,669 — Derivative Assets 7,506 — 7,506 — Total Measured on a Recurring Basis $ 583,175 $ — $ 583,175 $ — Liabilities: Derivative Liabilities $ 7,506 — $ 7,506 — Total Measured on a Recurring Basis $ 7,506 $ — $ 7,506 $ — September 30, 2022 Assets: Securities Available-for Sale: U.S. Government & Agency Obligations $ 163,965 $ — $ 163,965 $ — State and Municipal Obligations 340 — 340 — Mortgage-Backed Securities 409,949 — 409,949 — Corporate and Other Debt Securities 800 — 800 — Total Securities Available-for-Sale 575,054 — 575,054 — Equity Securities 2,126 — 2,126 — Total Securities Measured on a Recurring Basis 577,180 — 577,180 — Derivative Assets 8,508 — 8,508 — Total Measured on a Recurring Basis $ 585,688 $ — $ 585,688 $ — Liabilities: Derivative Liabilities 8,508 — 8,508 — Total Measured on a Recurring Basis $ 8,508 $ — $ 8,508 $ — Fair Value Quoted Prices Significant Other Significant Unobservable Inputs Gains (Losses) Recognized in Earnings Fair Value of Assets and Liabilities Measured on a Nonrecurring Basis: September 30, 2023 Collateral Dependent Evaluated Loans $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net 526 — — 526 — December 31, 2022 Collateral Dependent Impaired Loans $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net 593 — — 593 — September 30, 2022 Collateral Dependent Impaired Loans $ — $ — $ — $ — Other Real Estate Owned and Repossessed Assets, Net 604 — — 604 —
Fair Value, by Balance Sheet Grouping	The following table presents a summary of the carrying amount, the fair value or an amount approximating fair value and the fair value hierarchy of Arrow’s financial instruments: Schedule of Fair Values by Balance Sheet Grouping Fair Value Hierarchy Carrying Value Fair Value Level 1 Level 2 Level 3 September 30, 2023 Cash and Cash Equivalents $ 294,739 $ 294,739 $ 294,739 $ — $ — Securities Available-for-Sale 519,240 519,240 — 519,240 — Securities Held-to-Maturity 140,577 134,811 — 134,811 — Equity Securities 1,960 1,960 — 1,960 — Federal Home Loan Bank and Federal 5,110 5,110 — 5,110 — Net Loans 3,107,505 2,867,016 — — 2,867,016 Accrued Interest Receivable 11,163 11,163 — 11,163 — Derivative Assets 8,860 8,860 8,860 Deposits 3,666,485 3,660,360 — 3,660,360 — Borrowings 174,300 173,709 — 173,709 — Junior Subordinated Obligations Issued 20,000 20,000 — 20,000 — Accrued Interest Payable 7,432 7,432 — 7,432 — Derivative Liabilities 8,733 8,733 — 8,733 — December 31, 2022 Cash and Cash Equivalents $ 64,660 $ 64,660 $ 64,660 $ — $ — Securities Available-for-Sale 573,495 573,495 — 573,495 — Securities Held-to-Maturity 175,364 171,623 — 171,623 — Equity Securities 2,174 2,174 2,174 Federal Home Loan Bank and Federal 6,064 6,064 — 6,064 — Net Loans 2,953,255 2,742,721 — — 2,742,721 Accrued Interest Receivable 9,890 9,890 — 9,890 — Derivative Assets 7,506 7,506 — 7,506 — Deposits 3,498,364 3,492,021 — 3,492,021 — Federal Home Loan Bank Term Advances 27,800 27,757 — 27,757 — Junior Subordinated Obligations Issued 20,000 20,000 — 20,000 — Accrued Interest Payable 357 357 — 357 — Derivative Liabilities 7,506 7,506 — 7,506 — September 30, 2022 Cash and Cash Equivalents $ 373,429 $ 373,429 $ 373,429 $ — $ — Securities Available-for-Sale 575,054 575,054 — 575,054 — Securities Held-to-Maturity 182,178 175,800 — 175,800 — Equity Securities 2,126 2,126 — 2,126 Federal Home Loan Bank and Federal 4,720 4,720 — 4,720 — Net Loans 2,895,562 2,714,587 — — 2,714,587 Accrued Interest Receivable 8,549 8,549 — 8,549 — Derivative Assets 8,508 8,508 — 8,508 — Deposits 3,795,105 3,785,960 — 3,785,960 — Federal Home Loan Bank Term Advances 25,000 24,833 — 24,833 — Junior Subordinated Obligations Issued 20,000 20,000 — 20,000 — Accrued Interest Payable 202 202 — 202 — Derivative Liabilities 8,508 8,508 — 8,508 —

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Lease, Cost	The following includes quantitative data related to Arrow's leases as of and for the nine months ended September 30, 2023 and September 30, 2022: Nine Months Ended Finance Lease Amounts: Classification September 30, 2023 September 30, 2022 Right-of-Use Assets Premises and Equipment, Net $ 4,504 $ 4,681 Lease Liabilities Finance Leases 5,080 5,131 Operating Lease Amounts: Right-of-Use Assets Other Assets $ 4,978 $ 5,889 Lease Liabilities Other Liabilities 5,179 6,082 Other Information: Cash Paid For Amounts Included In The Measurement Of Lease Liabilities: Operating Outgoing Cash Flows From Finance Leases $ 143 $ 145 Operating Outgoing Cash Flows From Operating Leases 781 1,041 Financing Outgoing Cash Flows From Finance Leases 39 38 Right-of-Use Assets Obtained In Exchange For New Finance Lease Liabilities — — Right-of-Use Assets Obtained In Exchange For New Operating Lease Liabilities 19 — Weighted-average Remaining Lease Term - Finance Leases (Yrs.) 26.54 27.50 Weighted-average Remaining Lease Term - Operating Leases (Yrs.) 11.45 11.36 Weighted-average Discount Rate—Finance Leases 3.75 % 3.75 % Weighted-average Discount Rate—Operating Leases 3.01 % 2.87 % Lease cost information for Arrow's leases is as follows: Three Months Ended Nine Months Ended September 30, 2023 September 30, 2022 September 30, 2023 September 30, 2022 Lease Cost: Finance Lease Cost: Reduction of Right-of-Use Assets $ 44 $ 44 $ 132 $ 133 Interest on Lease Liabilities 46 48 143 145 Operating Lease Cost 195 305 786 925 Short-term Lease Cost 11 9 46 32 Variable Lease Cost 58 86 179 253 Total Lease Cost $ 354 $ 492 $ 1,286 $ 1,488
Lessee, Operating Lease, Liability, Maturity	Future Lease Payments at September 30, 2023 are as follows: Operating Leases Financing Leases Twelve Months Ended: 9/30/2024 $ 733 $ 247 9/30/2025 653 259 9/30/2026 590 268 9/30/2027 561 268 9/30/2028 486 268 Thereafter 3,212 7,063 Total Undiscounted Cash Flows $ 6,235 $ 8,373 Less: Net Present Value Adjustment 1,056 3,293 Lease Liability $ 5,179 $ 5,080
Finance Lease, Liability, Maturity	Future Lease Payments at September 30, 2023 are as follows: Operating Leases Financing Leases Twelve Months Ended: 9/30/2024 $ 733 $ 247 9/30/2025 653 259 9/30/2026 590 268 9/30/2027 561 268 9/30/2028 486 268 Thereafter 3,212 7,063 Total Undiscounted Cash Flows $ 6,235 $ 8,373 Less: Net Present Value Adjustment 1,056 3,293 Lease Liability $ 5,179 $ 5,080

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table depicts the fair value adjustment recorded related to the notional amount of derivatives, not designated as hedging instruments, outstanding as well as the notional amount of the interest rate swap agreements: Derivatives Not Designated as Hedging Instruments - Interest Rate Swap Agreements September 30, 2023 December 31, 2022 September 30, 2022 Fair value adjustment included in other assets $ 8,733 $ 7,506 $ 8,508 Fair value adjustment included in other liabilities 8,733 7,506 8,508 Notional amount 124,350 127,763 134,406 Derivatives Designated as Hedging Instruments - Fair Value Agreements September 30, 2023 December 31, 2022 September 30, 2022 Fair value adjustment included in other assets $ 885 $ — $ — Fair value adjustment included in other liabilities — — — Notional amount 300,000 — — The following table represents the carrying value of the portfolio layer method hedged assets and the cumulative fair value hedging adjustment included in the carrying value of the hedged asset: Derivatives Designated as Hedging Instruments - Fair Value Swap Agreements September 30, 2023 December 31, 2022 September 30, 2022 Carrying Value of Portfolio Layer Method Hedged Asset $ 299,242 $ — $ — Cumulative Fair Value Hedging Adjustment (758) — —
Derivative Instruments, Gain (Loss)	The following table summarizes the effect of the fair value hedging relationship recognized on the unaudited interim consolidated statement of income: Derivatives Designated as Hedging Instruments - Fair Value Agreements Nine Months Ended Twelve Months Ended Nine Months Ended September 30, 2023 December 31, 2022 September 30, 2022 Hedged Asset $ (758) $ — $ — Fair value derivative designated as hedging instrument 885 — — Total gain recognized in the consolidated statements of income with interest and fees on loans 127 — —
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table indicates the effect of cash flow hedge accounting on AOCI and on the unaudited interim consolidated statement of income: Derivatives Designated as Hedging Instruments - Cash Flow Hedge Agreements Nine Months Ended Twelve Months Ended Nine Months Ended September 30, 2023 December 31, 2022 September 30, 2022 Amount of (loss) gain recognized in AOCI $ 125 $ 3,467 $ 3,737 Amount of (loss) gain reclassified from AOCI to interest expense (660) (204) (57)

Risks and Uncertainties (Detail

Risks and Uncertainties (Details)	9 Months Ended
	Sep. 30, 2023 bank subsidiaryBusinessTrust
Risks and Uncertainties [Abstract]
Number of banks | bank	2
Number of business subsidiary trusts | subsidiaryBusinessTrust	2

Cash and Cash Equivalents (Deta

Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Cash and Cash Equivalents [Abstract]
Cash and Due From Banks	$ 39,778	$ 31,886	$ 44,872
Interest-Bearing Deposits at Banks	254,961	32,774	328,557
Total Cash and Cash Equivalents	$ 294,739	$ 64,660	$ 373,429	$ 457,696

Investment Securities - Availab

Investment Securities - Available for Sale (Details) $ in Thousands	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security	Sep. 30, 2022 USD ($) security
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	$ 589,603	$ 639,095	$ 646,825
Gross Unrealized Gains	1	80	3
Gross Unrealized Losses	(70,364)	(65,680)	(71,774)
Available-for-Sale at Fair Value	519,240	573,495	575,054
Maturities of Debt Securities, at Amortized Cost:
Within One Year	15,586
From 1 - 5 Years	390,671
From 5 - 10 Years	183,346
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	15,305
From 1 - 5 Years	355,384
From 5 - 10 Years	148,551
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	26,176	250,558	345,910
12 Months or Longer	492,496	293,555	228,674
Total	$ 518,672	$ 544,113	$ 574,584
Number of Securities in a Continuous Loss Position | security	180	174	181
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 403	$ 22,066	$ 34,102
12 Months or Longer	69,961	43,614	37,672
Total	70,364	65,680	71,774
Collateral Pledged
Available-For-Sale Securities
Available-For-Sale Securities, Pledged as Collateral, at Fair Value	390,923	308,266	414,929
U.S. Government & Agency Obligations
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	190,000	190,000	180,000
Gross Unrealized Gains	0	15	0
Gross Unrealized Losses	(13,579)	(14,816)	(16,035)
Available-for-Sale at Fair Value	176,421	175,199	163,965
Maturities of Debt Securities, at Amortized Cost:
Within One Year	15,000
From 1 - 5 Years	175,000
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	14,736
From 1 - 5 Years	161,685
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	14,914	66,690	71,419
12 Months or Longer	161,506	93,493	92,545
Total	$ 176,420	$ 160,183	$ 163,964
Number of Securities in a Continuous Loss Position | security	25	23	24
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 86	$ 3,310	$ 3,581
12 Months or Longer	13,493	11,506	12,454
Total	13,579	14,816	16,035
U.S. Government & Agency Obligations | Agency Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	190,000	190,000	180,000
Available-for-Sale at Fair Value	176,421	175,199	163,965
State and Municipal Obligations
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	280	340	340
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	0	0	0
Available-for-Sale at Fair Value	280	340	340
Maturities of Debt Securities, at Amortized Cost:
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	280
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	280
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	0	0	0
12 Months or Longer	0	0	0
Total	$ 0	$ 0	$ 0
Number of Securities in a Continuous Loss Position | security	0	0	0
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 0	$ 0
12 Months or Longer	0	0	0
Total	0	0	0
State and Municipal Obligations | Municipal Bonds
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	280	340	340
Available-for-Sale at Fair Value	280	340	340
Mortgage- Backed Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	398,323	447,755	465,485
Gross Unrealized Gains	1	65	3
Gross Unrealized Losses	(56,585)	(50,664)	(55,539)
Available-for-Sale at Fair Value	341,739	397,156	409,949
Maturities of Debt Securities, at Amortized Cost:
Within One Year	586
From 1 - 5 Years	215,671
From 5 - 10 Years	182,066
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	569
From 1 - 5 Years	193,699
From 5 - 10 Years	147,471
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	11,262	183,868	274,491
12 Months or Longer	330,190	199,262	135,329
Total	$ 341,452	$ 383,130	$ 409,820
Number of Securities in a Continuous Loss Position | security	154	150	156
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 317	$ 18,756	$ 30,521
12 Months or Longer	56,268	31,908	25,018
Total	56,585	50,664	55,539
Mortgage- Backed Securities | US Government Agencies Debt Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	7,416	7,934	8,243
Available-for-Sale at Fair Value	6,885	7,433	7,842
Mortgage- Backed Securities | US Government-sponsored Enterprises Debt Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	390,907	439,821	457,242
Available-for-Sale at Fair Value	334,854	389,723	402,107
Corporate and Other Debt Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	1,000	1,000	1,000
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	(200)	(200)	(200)
Available-for-Sale at Fair Value	800	800	800
Maturities of Debt Securities, at Amortized Cost:
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	1,000
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	0
From 1 - 5 Years	0
From 5 - 10 Years	800
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	0	0	0
12 Months or Longer	800	800	800
Total	$ 800	$ 800	$ 800
Number of Securities in a Continuous Loss Position | security	1	1	1
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 0	$ 0
12 Months or Longer	200	200	200
Total	200	200	200
Corporate and Other Debt Securities | Corporate Trust Preferred Securities
Available-For-Sale Securities
Available-For-Sale Securities, at Amortized Cost	1,000	1,000	1,000
Available-for-Sale at Fair Value	$ 800	$ 800	$ 800

Investment Securities - Held to

Investment Securities - Held to Maturity (Details)	3 Months Ended
	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security	Sep. 30, 2022 USD ($) security
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, available-for-sale, allowance for credit loss, excluding accrued interest	$ 0
Held-To-Maturity Securities, at Amortized Cost	140,577,000	$ 175,364,000	$ 182,178,000
Gross Unrealized Gains	0	1,000	1,000
Gross Unrealized Losses	(5,766,000)	(3,742,000)	(6,379,000)
Held-To-Maturity Securities, at Fair Value	134,811,000	171,623,000	175,800,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	56,686,000
From 1 - 5 Years	81,554,000
From 5 - 10 Years	2,308,000
Over 10 Years	29,000
Maturities of Debt Securities, at Fair Value:
Within One Year	55,883,000
From 1 - 5 Years	76,714,000
From 5 - 10 Years	2,185,000
Over 10 Years	29,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	1,575,000	148,926,000	153,083,000
12 Months or Longer	117,090,000	0	0
Total	$ 118,665,000	$ 148,926,000	$ 153,083,000
Number of Securities in a Continuous Loss Position | security	355	413	435,000
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 86,000	$ 3,742,000	$ 6,379,000
12 Months or Longer	5,680,000	0	0
Total	5,766,000	3,742,000	6,379,000
Debt securities, available-for-sale, excluding accrued interest, allowance for credit loss, not to sell before recovery, credit loss, previously recorded, expense (reversal)	0
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest	0
Equity Securities	1,960,000	2,174,000	2,126,000
State and Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	131,017,000	163,600,000	169,619,000
Gross Unrealized Gains	0	1,000	1,000
Gross Unrealized Losses	(5,204,000)	(3,131,000)	(5,771,000)
Held-To-Maturity Securities, at Fair Value	125,813,000	160,470,000	163,849,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	56,686,000
From 1 - 5 Years	71,994,000
From 5 - 10 Years	2,308,000
Over 10 Years	29,000
Maturities of Debt Securities, at Fair Value:
Within One Year	55,883,000
From 1 - 5 Years	67,716,000
From 5 - 10 Years	2,185,000
Over 10 Years	29,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	1,575,000	137,773,000	141,132,000
12 Months or Longer	108,092,000	0	0
Total	$ 109,667,000	$ 137,773,000	$ 141,132,000
Number of Securities in a Continuous Loss Position | security	339	397	419,000
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 86,000	$ 3,131,000	$ 5,771,000
12 Months or Longer	5,118,000	0	0
Total	5,204,000	3,131,000	5,771,000
Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	9,560,000	11,764,000	12,559,000
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	(562,000)	(611,000)	(608,000)
Held-To-Maturity Securities, at Fair Value	8,998,000	11,153,000	11,951,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	0
From 1 - 5 Years	9,560,000
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	0
From 1 - 5 Years	8,998,000
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	0	11,153,000	11,951,000
12 Months or Longer	8,998,000	0	0
Total	$ 8,998,000	$ 11,153,000	$ 11,951,000
Number of Securities in a Continuous Loss Position | security	16	16	16,000
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 611,000	$ 608,000
12 Months or Longer	562,000	0	0
Total	562,000	611,000	608,000
Fair Value, Measurements, Recurring
Unrealized Losses on Securities in a Continuous Loss Position:
Equity Securities	1,960,000	2,174,000	2,126,000
Collateral Pledged
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, Pledged as Collateral, at Carrying Value	117,723,000	146,722,000	159,742,000
Held-To-Maturity Securities, Pledged as Collateral, at Fair Value	111,957,000	142,982,000	153,364,000
US Government Agencies Debt Securities | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	3,292,000	3,898,000	4,115,000
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Fair Value	3,075,000	3,687,000	3,924,000
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	6,268,000	7,866,000	8,444,000
US Government-sponsored Enterprises Debt Securities | Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Fair Value	5,923,000	7,466,000	8,027,000
Municipal Bonds | State and Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	131,017,000	163,600,000	169,619,000
Municipal Bonds | Fair Value, Measurements, Recurring | State and Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Fair Value	$ 125,813,000	$ 160,470,000	$ 163,849,000

Investment Securities - Unreali

Investment Securities - Unrealized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Net (Loss) Gain on Equity Securities	$ 71	$ 95	$ (214)	$ 379
Less: Net gain recognized during the reporting period on equity securities sold during the period	0	0	0	0
Unrealized net (loss) gain recognized during the reporting period on equity securities still held at the reporting date	$ 71	$ 95	$ (214)	$ 379

Loans - Loan Categories and Pas

Loans - Loan Categories and Past Due Loans (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing Receivable, Past Due [Line Items]
Loans receivable held-for-sale, net, not part of disposal group	$ 165	$ 656	$ 483
Total	3,138,617	2,983,207	2,924,794
Loans 90 or More Days Past Due and Still Accruing Interest	251	1,157	514
Nonaccrual Loans	6,023	10,757	8,812
Nonaccrual With No Allowance for Credit Loss	6,023
Interest Income on Nonaccrual Loans	0
Commercial
Financing Receivable, Past Due [Line Items]
Total	148,066	140,293	138,973
Loans 90 or More Days Past Due and Still Accruing Interest	0	44	0
Nonaccrual Loans	3	8	9
Nonaccrual With No Allowance for Credit Loss	3
Interest Income on Nonaccrual Loans	0
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	734,604	707,022	679,217
Loans 90 or More Days Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	0	3,110	3,401
Nonaccrual With No Allowance for Credit Loss	0
Interest Income on Nonaccrual Loans	0
Consumer
Financing Receivable, Past Due [Line Items]
Total	1,107,637	1,065,135	1,055,585
Loans 90 or More Days Past Due and Still Accruing Interest	0	0	0
Nonaccrual Loans	1,572	3,503	1,708
Nonaccrual With No Allowance for Credit Loss	1,572
Interest Income on Nonaccrual Loans	0
Residential
Financing Receivable, Past Due [Line Items]
Total	1,148,310	1,070,757	1,051,019
Loans 90 or More Days Past Due and Still Accruing Interest	251	1,113	514
Nonaccrual Loans	4,448	4,136	3,694
Nonaccrual With No Allowance for Credit Loss	4,448
Interest Income on Nonaccrual Loans	0
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total	39,375	28,907	20,522
Financial Asset, Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	309	125	166
Financial Asset, Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	15,764	370	235
Financial Asset, Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	18,321	21,677	14,975
Financial Asset, Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	4,981	6,735	5,146
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	27,590	15,908	9,349
Financing Receivables, 30 to 59 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	247	48	86
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	13,787	370	0
Financing Receivables, 30 to 59 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	11,864	13,657	8,870
Financing Receivables, 30 to 59 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	1,692	1,833	393
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	7,007	4,662	5,743
Financing Receivables, 60 to 89 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	59	33	80
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	1,977	0	0
Financing Receivables, 60 to 89 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	4,953	4,517	4,397
Financing Receivables, 60 to 89 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	18	112	1,266
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	4,778	8,337	5,430
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	3	44	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	0	0	235
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	1,504	3,503	1,708
Financing Receivables, Equal to Greater than 90 Days Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	3,271	4,790	3,487
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total	3,099,242	2,954,300	2,904,272
Financial Asset, Not Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total	147,757	140,168	138,807
Financial Asset, Not Past Due | Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total	718,840	706,652	678,982
Financial Asset, Not Past Due | Consumer
Financing Receivable, Past Due [Line Items]
Total	1,089,316	1,043,458	1,040,610
Financial Asset, Not Past Due | Residential
Financing Receivable, Past Due [Line Items]
Total	$ 1,143,329	$ 1,064,022	$ 1,045,873

Loans - Additional Information

Loans - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) loan_portfolio	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) loan_portfolio	Sep. 30, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loan portfolios | loan_portfolio	4		4
Provision	$ 354	$ 1,715	$ 2,856	$ 3,389
Off-balance sheet, credit loss, liability	1,700		1,700
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision	306	509	974	425
Residential | Contractual Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans modified during period, amount			1,500
Monthly impact of loans modified during period			10
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision	301	$ 692	1,640	$ 1,505
Mortgage loans in process of foreclosure, amount	$ 2,800		$ 2,800
Consumer | Minimum | Automobile Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal repayment terms, period			3 years
Consumer | Minimum | Credit Card Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal repayment terms, period			1 year
Consumer | Maximum | Automobile Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal repayment terms, period			7 years
Consumer | Maximum | Credit Card Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal repayment terms, period			5 years

Loans - Allowance for Loan Loss

Loans - Allowance for Loan Losses (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Allowance for Loan Losses, Beginning balance	$ 31,170	$ 28,090	$ 29,952	$ 27,281
Charge-offs	(1,204)	(1,147)	(3,812)	(2,883)
Recoveries	792	574	2,116	1,445
Provision	354	1,715	2,856	3,389
Allowance for Loan Losses, Ending balance	$ 31,112	29,232	$ 31,112	29,232
Number of loans individually evaluated for impairment | loan	4		4
Number of loans with an allowance for credit loss on loans individually evaluated for impairment | loan	0		0
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Ending Loan Balance - Collectively Evaluated	$ 3,136,668	2,920,134	$ 3,136,668	2,920,134	$ 2,978,134
Allowance for Credit Losses - Loans Collectively Evaluated	31,112	29,232	31,112	29,232	29,952
Ending Loan Balance - Individually Evaluated	1,949	4,660	1,949	4,660	5,073
Allowance for Credit Losses - Loans Individually Evaluated	0	0	0	0	0
Commercial
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Charge-offs			0
Commercial Real Estate
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Charge-offs			0
Consumer
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Allowance for Loan Losses, Beginning balance	2,646	2,358	2,585	2,402
Charge-offs	(1,204)	(1,103)	(3,806)	(2,805)
Recoveries	792	574	2,116	1,419
Provision	301	692	1,640	1,505
Allowance for Loan Losses, Ending balance	2,535	2,521	2,535	2,521
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Ending Loan Balance - Collectively Evaluated	1,107,637	1,055,585	1,107,637	1,055,585	1,065,135
Allowance for Credit Losses - Loans Collectively Evaluated	2,535	2,521	2,535	2,521	2,585
Ending Loan Balance - Individually Evaluated	0	0	0	0	0
Allowance for Credit Losses - Loans Individually Evaluated	0	0	0	0	0
Residential
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Allowance for Loan Losses, Beginning balance	10,855	9,331	10,193	9,445
Charge-offs	0	0	(6)	(30)
Recoveries	0	0	0	0
Provision	306	509	974	425
Allowance for Loan Losses, Ending balance	11,161	9,840	11,161	9,840
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Ending Loan Balance - Collectively Evaluated	1,146,361	1,049,525	1,146,361	1,049,525	1,068,794
Allowance for Credit Losses - Loans Collectively Evaluated	11,161	9,840	11,161	9,840	10,193
Ending Loan Balance - Individually Evaluated	1,949	1,494	1,949	1,494	1,963
Allowance for Credit Losses - Loans Individually Evaluated	0	0	0	0	0
Commercial
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Allowance for Loan Losses, Beginning balance	1,972	2,465	1,961	2,298
Charge-offs	0	(44)	0	(48)
Recoveries	0	0	0	26
Provision	(139)	(416)	(128)	(271)
Allowance for Loan Losses, Ending balance	1,833	2,005	1,833	2,005
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Ending Loan Balance - Collectively Evaluated	148,066	138,973	148,066	138,973	140,293
Allowance for Credit Losses - Loans Collectively Evaluated	1,833	2,005	1,833	2,005	1,961
Ending Loan Balance - Individually Evaluated	0	0	0	0	0
Allowance for Credit Losses - Loans Individually Evaluated	0	0	0	0	0
Commercial Real Estate
Rollforward of the Allowance for Credit Losses for the Quarterly Period:
Allowance for Loan Losses, Beginning balance	15,697	13,936	15,213	13,136
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(114)	930	370	1,730
Allowance for Loan Losses, Ending balance	15,583	14,866	15,583	14,866
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Ending Loan Balance - Collectively Evaluated	734,604	676,051	734,604	676,051	703,912
Allowance for Credit Losses - Loans Collectively Evaluated	15,583	14,866	15,583	14,866	15,213
Ending Loan Balance - Individually Evaluated	0	3,166	0	3,166	3,110
Allowance for Credit Losses - Loans Individually Evaluated	$ 0	$ 0	$ 0	$ 0	$ 0

Loans - Amortized Cost Basis of

Loans - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	$ 3,107,505	$ 2,953,255	$ 2,895,562
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,949	5,073	4,660
Real Estate | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Real Estate | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	3,110	3,166
Real Estate | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Real Estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,949	1,963	1,494
Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,949	1,963	1,494
Residential Real Estate | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Residential Real Estate | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Residential Real Estate | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Residential Real Estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,949	1,963	1,494
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	3,110	3,166
Commercial Real Estate | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Commercial Real Estate | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	3,110	3,166
Commercial Real Estate | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	0	0	0
Commercial Real Estate | Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	$ 0	$ 0	$ 0

Loans - Credit Quality Indicato

Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	$ 523,521	$ 730,646	$ 523,521	$ 730,646	$ 899,034
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	826,878	695,363	826,878	695,363	628,578
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	542,761	636,937	542,761	636,937	429,480
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	362,766	236,251	362,766	236,251	224,846
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	178,279	154,837	178,279	154,837	191,012
Prior	582,392	331,337	582,392	331,337	483,884
Revolving Loans Amortized Cost Basis	122,020	139,423	122,020	139,423	126,373
Revolving Loan Converted to Term	0	0	0	0	0
Total	3,138,617	2,924,794	3,138,617	2,924,794	2,983,207
Total Loans	3,107,505	2,895,562	3,107,505	2,895,562	2,953,255
Current-period gross charge-offs
Total	1,204	1,147	3,812	2,883
Commercial
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	37,300	34,589	37,300	34,589	42,038
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	36,456	35,080	36,456	35,080	28,718
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	23,602	27,133	23,602	27,133	17,125
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	10,750	7,999	10,750	7,999	8,335
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	4,825	9,605	4,825	9,605	8,129
Prior	24,704	11,266	24,704	11,266	23,873
Revolving Loans Amortized Cost Basis	10,429	13,301	10,429	13,301	12,075
Revolving Loan Converted to Term	0	0	0	0	0
Total	148,066	138,973	148,066	138,973	140,293
Current-period gross charge-offs
Financing receivable, excluding accrued interest, year one, originated, current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year, writeoff			0
Prior			0
Revolving Loans Amortized Cost Basis
Revolving Loan Converted to Term
Total			0
Commercial Real Estate
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	57,761	125,881	57,761	125,881	163,143
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	170,163	141,029	170,163	141,029	115,111
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	107,813	262,105	107,813	262,105	127,618
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	124,558	42,092	124,558	42,092	44,459
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	42,624	35,075	42,624	35,075	69,073
Prior	229,151	69,762	229,151	69,762	185,794
Revolving Loans Amortized Cost Basis	2,534	3,273	2,534	3,273	1,824
Revolving Loan Converted to Term	0	0	0	0	0
Total	734,604	679,217	734,604	679,217	707,022
Current-period gross charge-offs
Financing receivable, excluding accrued interest, year one, originated, current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year, writeoff			0
Prior			0
Revolving Loans Amortized Cost Basis
Revolving Loan Converted to Term
Total			0
Consumer
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	322,193	406,474	322,193	406,474	483,288
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	385,232	309,589	385,232	309,589	286,299
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	216,796	173,325	216,796	173,325	155,426
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	107,935	101,762	107,935	101,762	88,490
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	53,714	47,932	53,714	47,932	39,009
Prior	21,309	16,020	21,309	16,020	12,119
Revolving Loans Amortized Cost Basis	458	483	458	483	504
Revolving Loan Converted to Term	0	0	0	0	0
Total	1,107,637	1,055,585	1,107,637	1,055,585	1,065,135
Current-period gross charge-offs
Financing receivable, excluding accrued interest, year one, originated, current fiscal year, writeoff			192
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year, writeoff			915
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year, writeoff			1,689
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year, writeoff			477
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year, writeoff			299
Prior			234
Revolving Loans Amortized Cost Basis
Revolving Loan Converted to Term
Total	1,204	1,103	3,806	2,805
Residential
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	106,267	163,702	106,267	163,702	210,565
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	235,027	209,665	235,027	209,665	198,450
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	194,550	174,374	194,550	174,374	129,311
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	119,523	84,398	119,523	84,398	83,562
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	77,116	62,225	77,116	62,225	74,801
Prior	307,228	234,289	307,228	234,289	262,098
Revolving Loans Amortized Cost Basis	108,599	122,366	108,599	122,366	111,970
Revolving Loan Converted to Term	0	0	0	0	0
Total	1,148,310	1,051,019	1,148,310	1,051,019	1,070,757
Current-period gross charge-offs
Financing receivable, excluding accrued interest, year one, originated, current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year, writeoff			0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year, writeoff			0
Prior			6
Revolving Loans Amortized Cost Basis
Revolving Loan Converted to Term
Total	0	0	6	30
Satisfactory | Commercial
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	37,300	34,589	37,300	34,589	42,038
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	36,456	31,762	36,456	31,762	28,718
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	23,602	26,654	23,602	26,654	16,870
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	10,622	7,554	10,622	7,554	7,857
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	4,799	9,605	4,799	9,605	8,129
Prior	21,459	11,194	21,459	11,194	20,379
Revolving Loans Amortized Cost Basis	10,328	8,008	10,328	8,008	8,909
Revolving Loan Converted to Term	0	0	0	0	0
Total	144,566	129,366	144,566	129,366	132,900
Satisfactory | Commercial Real Estate
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	57,761	106,549	57,761	106,549	152,858
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	157,741	136,306	157,741	136,306	115,111
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	106,128	247,780	106,128	247,780	121,811
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	121,968	40,959	121,968	40,959	43,647
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	41,827	30,667	41,827	30,667	63,913
Prior	184,590	64,934	184,590	64,934	159,876
Revolving Loans Amortized Cost Basis	2,035	3,052	2,035	3,052	1,603
Revolving Loan Converted to Term	0	0	0	0	0
Total	672,050	630,247	672,050	630,247	658,819
Special Mention | Commercial
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	128	0	128	0	0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	0	0	0	0	0
Prior	0	35	0	35	30
Revolving Loans Amortized Cost Basis	0	35	0	35	30
Revolving Loan Converted to Term	0	0	0	0	0
Total	128	70	128	70	60
Special Mention | Commercial Real Estate
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	9,801	0	9,801	9,678
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	3,123	0	3,123	0	0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	0	2,973	0	2,973	0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	0	4,315	0	4,315	789
Prior	4,150	1,425	4,150	1,425	241
Revolving Loans Amortized Cost Basis	0	0	0	0	0
Revolving Loan Converted to Term	0	0	0	0	0
Total	7,273	18,514	7,273	18,514	10,708
Substandard | Commercial
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	0	3,318	0	3,318	0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	0	479	0	479	255
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	0	445	0	445	478
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	26	0	26	0	0
Prior	3,245	37	3,245	37	3,464
Revolving Loans Amortized Cost Basis	101	5,258	101	5,258	3,136
Revolving Loan Converted to Term	0	0	0	0	0
Total	3,372	9,537	3,372	9,537	7,333
Substandard | Commercial Real Estate
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	9,531	0	9,531	607
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	9,299	4,723	9,299	4,723	0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	1,685	11,352	1,685	11,352	5,807
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	2,590	1,133	2,590	1,133	812
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	797	93	797	93	4,371
Prior	40,411	3,403	40,411	3,403	25,677
Revolving Loans Amortized Cost Basis	499	221	499	221	221
Revolving Loan Converted to Term	0	0	0	0	0
Total	55,281	30,456	55,281	30,456	37,495
Doubtful | Commercial
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	0	0	0	0	0
Prior	0	0	0	0	0
Revolving Loans Amortized Cost Basis	0	0	0	0	0
Revolving Loan Converted to Term	0	0	0	0	0
Total	0	0	0	0	0
Doubtful | Commercial Real Estate
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	0	0	0	0	0
Prior	0	0	0	0	0
Revolving Loans Amortized Cost Basis	0	0	0	0	0
Revolving Loan Converted to Term	0	0	0	0	0
Total	0	0	0	0	0
Performing | Consumer
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	322,084	406,206	322,084	406,206	482,530
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	384,607	309,006	384,607	309,006	284,831
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	216,234	172,974	216,234	172,974	154,819
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	107,743	101,458	107,743	101,458	88,165
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	53,646	47,874	53,646	47,874	38,852
Prior	21,276	15,933	21,276	15,933	12,032
Revolving Loans Amortized Cost Basis	0	483	0	483	504
Revolving Loan Converted to Term	0	0	0	0	0
Total	1,105,590	1,053,934	1,105,590	1,053,934	1,061,733
Performing | Residential
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	106,267	163,702	106,267	163,702	210,565
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	235,027	209,408	235,027	209,408	198,195
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	191,780	173,435	191,780	173,435	128,372
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	118,517	84,370	118,517	84,370	82,965
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	76,518	61,907	76,518	61,907	74,281
Prior	305,076	232,021	305,076	232,021	259,787
Revolving Loans Amortized Cost Basis	108,098	122,191	108,098	122,191	111,563
Revolving Loan Converted to Term	0	0	0	0	0
Total	1,141,283	1,047,034	1,141,283	1,047,034	1,065,728
Nonperforming | Consumer
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	109	268	109	268	758
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	625	583	625	583	1,468
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	562	351	562	351	607
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	192	304	192	304	325
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	68	58	68	58	157
Prior	33	87	33	87	87
Revolving Loans Amortized Cost Basis	458	0	458	0	0
Revolving Loan Converted to Term	0	0	0	0	0
Total	2,047	1,651	2,047	1,651	3,402
Nonperforming | Residential
Total Loans
Financing receivable, excluding accrued interest, year one, originated, current fiscal year	0	0	0	0	0
Financing receivable, excluding accrued interest, year two, originated, fiscal year before current fiscal year	0	257	0	257	255
Financing receivable, excluding accrued interest, year three, originated, two years before current fiscal year	2,770	939	2,770	939	939
Financing receivable, excluding accrued interest, year four, originated, three years before current fiscal year	1,006	28	1,006	28	597
Financing receivable, excluding accrued interest, year five, originated, four years before current fiscal year	598	318	598	318	520
Prior	2,152	2,268	2,152	2,268	2,311
Revolving Loans Amortized Cost Basis	501	175	501	175	407
Revolving Loan Converted to Term	0	0	0	0	0
Total	$ 7,027	$ 3,985	$ 7,027	$ 3,985	$ 5,029

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Short-Term Debt [Line Items]
BTFP Advances	$ 150,000	$ 0	$ 0
FHLBNY Overnight Advances	10,000	27,000	0
FHLBNY Term Advances	14,300	27,800	25,000
Total Borrowings	174,300	54,800	25,000
Federal Home Loan Bank of New York	607,596	663,259	799,544
Federal Funds Purchased
Short-Term Debt [Line Items]
Maximum Borrowing Capacity	52,000	52,000	52,000
Available Borrowing Capacity	52,000	52,000	52,000
Federal Home Loan Bank Advances
Short-Term Debt [Line Items]
Available Borrowing Capacity	449,296	608,458	774,544
Federal Reserve Bank Advances
Short-Term Debt [Line Items]
Maximum Borrowing Capacity	722,493	649,112	650,642
Available Borrowing Capacity	$ 722,493	$ 649,112	$ 650,642

Debt - Narrative (Details)

Debt - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) class subsidiaryBusinessTrust
Debt Instrument [Line Items]
Number of classes of financial instruments | class		2
Number of business subsidiary trusts | subsidiaryBusinessTrust		2
Interest Rate Swap
Debt Instrument [Line Items]
Amount of hedged item		$ 20,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Collateral, at carrying cost		1,200,000
Collateral, at fair value		$ 1,000,000
Proceeds from short-term debt	$ 150,000
Weighted average interest rate	4.83%
ACST III | London Interbank Offered Rate
Debt Instrument [Line Items]
Basis spread on variable rate		2%
ACST III | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		2%
Junior Subordinated Debt, Preferred Securities | ACST II | London Interbank Offered Rate
Debt Instrument [Line Items]
Basis spread on variable rate		3.15%
Junior Subordinated Debt, Preferred Securities | ACST II | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		3.15%
Federal Home Loan Bank of New York
Debt Instrument [Line Items]
Collateral, at carrying cost		$ 874,000
Collateral, at fair value		$ 741,000

Debt - Maturities of Short Term

Debt - Maturities of Short Term Debt (Details) - Federal Home Loan Bank Advances - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Balances
First Year	$ 7,800	$ 27,800	$ 5,000
Second Year	6,500	0	20,000
Total Borrowings	$ 14,300	$ 27,800	$ 25,000
Weighted Average Rate
First Year	5.14%	2.70%	1.81%
Second Year	5.59%	0%	1.75%
Total	5.38%	2.70%	1.77%

Debt - Schedule of Long-Term De

Debt - Schedule of Long-Term Debt Instruments (Details) - Junior Subordinated Debt - USD ($)	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
ACST II
Debt Instrument [Line Items]
Face amount	$ 10,000,000	$ 10,000,000	$ 10,000,000
Variable Interest Rate	8.81%	6.82%	6.82%
Fixed Interest Rate resulting from cash flow hedge agreement	4%	4%	4%
ACST III
Debt Instrument [Line Items]
Face amount	$ 10,000,000	$ 10,000,000	$ 10,000,000
Variable Interest Rate	7.66%	5.67%	5.67%
Fixed Interest Rate resulting from cash flow hedge agreement	2.86%	2.86%	2.86%

Commitments and Contingencies -

Commitments and Contingencies - Commitments to Extend Credit and Letters of Credit (Details) $ in Thousands	Jun. 23, 2023 security	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)
Robert C. Ashe Litigation
Loan Commitments and Letters of Credit [Line Items]
Number of new claims filed | security	2
Commitments to Extend Credit
Loan Commitments and Letters of Credit [Line Items]
Notional Amount		$ 464,661	$ 424,197	$ 440,167
Fair Value		0	0	0
Standby Letters of Credit
Loan Commitments and Letters of Credit [Line Items]
Notional Amount		4,201	3,627	3,445
Fair Value		$ 10	$ 2	$ 0
Minimum | Standby Letters of Credit
Loan Commitments and Letters of Credit [Line Items]
Loan commitments, fixed fee percent		1%
Maximum | Standby Letters of Credit
Loan Commitments and Letters of Credit [Line Items]
Loan commitments, fixed fee percent		3%

Comprehensive Loss - Schedule o

Comprehensive Loss - Schedule of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Before-Tax Amount
Other comprehensive (loss) income, before tax	$ (6,697)	$ (26,203)	$ (3,945)	$ (66,388)
Tax (Expense) Benefit
Other comprehensive (loss) income, tax	1,726	6,697	1,016	16,971
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(5,161)	(20,023)	(3,445)	(50,027)
Reclassification from AOCI, current period	190	517	516	610
Other Comprehensive Loss	(4,971)	(19,506)	(2,929)	(49,417)
Unrealized Gains and Losses on Available for Sale Securities
Before-Tax Amount
OCI, before reclassifications	(7,796)	(27,945)	(4,763)	(70,945)
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	2,010	7,144	1,227	18,137
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	(5,786)	(20,801)	(3,536)	(52,808)
Reclassification from AOCI, current period	0	0	0	0
Other Comprehensive Loss	(5,786)	(20,801)	(3,536)	(52,808)
Unrealized Gain on Cash Flow Swap
Before-Tax Amount
OCI, before reclassifications	846	1,046	125	3,737
Reclassification from AOCI, current period	242	75	660	57
Tax (Expense) Benefit
Other comprehensive (loss) income before reclassifications, tax	(221)	(268)	(34)	(956)
Reclassification from AOCI, current period	(61)	(20)	(169)	(15)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	625	778	91	2,781
Reclassification from AOCI, current period	181	55	491	42
Other Comprehensive Loss	806	833	582	2,823
Amortization of Net Retirement Plan Actuarial Gain (Loss)
Before-Tax Amount
Reclassification from AOCI, current period	(40)	564	(121)	592
Tax (Expense) Benefit
Reclassification from AOCI, current period	10	(144)	31	(151)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0	0	0
Reclassification from AOCI, current period	(30)	420	(90)	441
Other Comprehensive Loss	(30)	420	(90)	441
Amortization of Defined Benefit Pension, Prior-Service Costs
Before-Tax Amount
Reclassification from AOCI, current period	51	57	154	171
Tax (Expense) Benefit
Reclassification from AOCI, current period	(12)	(15)	(39)	(44)
Net-of-Tax Amount
Other comprehensive (loss) income before reclassifications	0	0	0	0
Reclassification from AOCI, current period	39	42	115	127
Other Comprehensive Loss	$ 39	$ 42	$ 115	$ 127

Comprehensive Loss - Changes in

Comprehensive Loss - Changes in Accumulated Other Comprehensive Income By Component (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	$ 361,443	$ 356,498	$ 353,538	$ 371,186
Other comprehensive income or loss before reclassifications	(5,161)	(20,023)	(3,445)	(50,027)
Amounts reclassified from accumulated other comprehensive income or loss	190	517	516	610
Other Comprehensive Loss	(4,971)	(19,506)	(2,929)	(49,417)
Stockholders' equity, ending balance	360,014	345,550	360,014	345,550
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(47,613)	(29,564)	(49,655)	347
Other Comprehensive Loss	(4,971)	(19,506)	(2,929)	(49,417)
Stockholders' equity, ending balance	(52,584)	(49,070)	(52,584)	(49,070)
Unrealized Gains and Losses on Available for Sale Securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(46,591)	(32,621)	(48,841)	(614)
Other comprehensive income or loss before reclassifications	(5,786)	(20,801)	(3,536)	(52,808)
Amounts reclassified from accumulated other comprehensive income or loss	0	0	0	0
Other Comprehensive Loss	(5,786)	(20,801)	(3,536)	(52,808)
Stockholders' equity, ending balance	(52,377)	(53,422)	(52,377)	(53,422)
Unrealized Gain on Cash Flow Swap
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	3,830	3,310	4,054	1,320
Other comprehensive income or loss before reclassifications	625	778	91	2,781
Amounts reclassified from accumulated other comprehensive income or loss	181	55	491	42
Other Comprehensive Loss	806	833	582	2,823
Stockholders' equity, ending balance	4,636	4,143	4,636	4,143
Net Actuarial Gain (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(4,527)	660	(4,467)	639
Other comprehensive income or loss before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income or loss	(30)	420	(90)	441
Other Comprehensive Loss	(30)	420	(90)	441
Stockholders' equity, ending balance	(4,557)	1,080	(4,557)	1,080
Net Prior Service (Cost) Credit
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(325)	(913)	(401)	(998)
Other comprehensive income or loss before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income or loss	39	42	115	127
Other Comprehensive Loss	39	42	115	127
Stockholders' equity, ending balance	$ (286)	$ (871)	$ (286)	$ (871)

Comprehensive Loss - Reclassifi

Comprehensive Loss - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 16,764	$ 3,306	$ 39,021	$ 5,983
Salaries and Employee Benefits	11,988	12,427	35,974	35,400
Total before Tax	9,570	15,565	28,138	47,370
Provision for income taxes	(1,827)	(3,402)	(5,786)	(10,658)
Net Income	7,743	12,163	22,352	36,712
Amounts Reclassified from Accumulated Other Comprehensive Income | Unrealized Gain on Cash Flow Swap
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(242)	(75)	(660)	(57)
Amounts Reclassified from Accumulated Other Comprehensive Income | Amortization of Defined Benefit Pension, Prior-Service Costs
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Employee Benefits	(51)	(57)	(154)	(171)
Amounts Reclassified from Accumulated Other Comprehensive Income | Amortization of Defined Benefit Pension, Actuarial Loss
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Salaries and Employee Benefits	40	(564)	121	(592)
Amounts Reclassified from Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before Tax	(253)	(696)	(693)	(820)
Provision for income taxes	63	179	177	210
Net Income	$ (190)	$ (517)	$ (516)	$ (610)

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - plan	1 Months Ended	9 Months Ended
	Oct. 31, 2023	Sep. 30, 2023	Sep. 26, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans		3
Stock dividend, percent		300%	3%	300%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period (in years)		10 years
Award vesting period (in years)		4 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount from market price, percent		5%
Employee Stock | Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount from market price, percent	10%

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Shares
Outstanding, beginning of period (in shares) | shares	287,444
Granted (in shares) | shares	57,680
Exercised (in shares) | shares	(3,885)
Forfeited (in shares) | shares	(35,139)
Outstanding, end of period (in shares) | shares	306,100
Vested at period end (in shares) | shares	207,642
Expected to vest (in shares) | shares	98,458
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 28.56
Granted (in dollars per share)	31.47
Exercised (in dollars per share)	20.95
Forfeited (in dollars per share)	30.91
Outstanding, end of period (in dollars per share)	28.94
Vested at period end (in dollars per share)	27.81
Expected to vest (in dollars per share)	31.32
Fair Value of Options Granted (in dollars per share)	$ 7.78
Dividend Yield	3.30%
Expected Volatility	28.38%
Risk Free Interest Rate	3.57%
Expected Lives (in years)	8 years 4 months 2 days

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount expensed	$ 24	$ 79	$ 196	$ 233
Restricted Stock Units (RSU)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount expensed	$ 246	$ 35	$ 321	$ 105

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Units (Details) - Restricted Stock Units (RSU) - $ / shares	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Restricted Stock Units
Balance at Beginning of Period (in shares)	13,925	14,007
Granted (in shares)	5,164	4,441
Vested (in shares)	(19,089)	(4,523)
Balance at End of Period (in shares)	0	13,925
Weighted Average Grant Date Fair Value
Outstanding at Beginning of period (in dollars per share)	$ 30.47	$ 28.42
Granted (in dollars per share)	31.47	33.78
Vested (in dollars per share)	30.74	27.35
Outstanding at End of period (in dollars per share)		$ 30.47

Retirement Benefit Plans (Detai

Retirement Benefit Plans (Details)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Net Periodic Benefit Cost [Line Items]
Interest credit under cash balance plan				0.03
Employer matching contribution, percentage				5%
Service cost and interest cost						$ 3,300,000
Unamortized net loss						$ 7,200,000
Benefit obligation from lump sum payment to total benefit obligation ratio						8.06%
Defined benefit plan, net periodic benefit cost, loss due to settlement		$ 577,000
Employees' Pension Plan
Net Periodic Benefit Cost [Line Items]
Assumptions used calculating benefit obligation, interest rate to annuitize cash balance account						5.09%
Defined benefit plan, increase in benefit payable, percent	3%			3%
Defined benefit plan, benefit obligation, increase (decrease) for plan amendment				$ 351,638
Defined benefit plan, amortization of service cost				9 years 8 months 12 days
Service Cost	$ 398,000		$ 469,000	$ 1,195,000	$ 1,408,000
Interest Cost	524,000		360,000	1,573,000	1,079,000
Expected Return on Plan Assets	(854,000)		(1,078,000)	(2,562,000)	(3,235,000)
Amortization of Prior Service Cost	16,000		19,000	47,000	58,000
Amortization of Net Loss (Gain)	30,000		550,000	89,000	550,000
Net Periodic Cost	114,000		320,000	342,000	(140,000)
Plan Contributions During the Period	0		0	0	0
Estimated Future Contributions in the Current Fiscal Year	0			$ 0
Select Executive Retirement Plan
Net Periodic Benefit Cost [Line Items]
Assumptions used calculating benefit obligation, interest rate to annuitize cash balance account						5.60%
Defined benefit plan, amortization of service cost				12 years 6 months
Defined benefit plan, benefit obligation, period increase (decrease)				$ 122,797
Service Cost	143,000		208,000	428,000	626,000
Interest Cost	85,000		57,000	244,000	169,000
Expected Return on Plan Assets	0		0	0	0
Amortization of Prior Service Cost	9,000		11,000	29,000	33,000
Amortization of Net Loss (Gain)	18,000		53,000	55,000	159,000
Net Periodic Cost	255,000		329,000	756,000	987,000
Plan Contributions During the Period	99,000		116,000	325,000	347,000
Estimated Future Contributions in the Current Fiscal Year	108,000			108,000
Post-Retirement Benefit Plans
Net Periodic Benefit Cost [Line Items]
Assumptions used calculating benefit obligation, interest rate to annuitize cash balance account						5.41%
Service Cost	14,000		23,000	42,000	68,000
Interest Cost	82,000		61,000	249,000	185,000
Expected Return on Plan Assets	0		0	0	0
Amortization of Prior Service Cost	26,000		27,000	78,000	80,000
Amortization of Net Loss (Gain)	(88,000)		(39,000)	(265,000)	(117,000)
Net Periodic Cost	34,000		72,000	104,000	216,000
Plan Contributions During the Period	28,000		$ 43,000	75,000	$ 131,000
Estimated Future Contributions in the Current Fiscal Year	$ 25,000			$ 25,000
On or Subsequent to January 1, 2003
Net Periodic Benefit Cost [Line Items]
Service credits, percent of eligible salaries				6%
Minimum | Prior to January 1, 2003
Net Periodic Benefit Cost [Line Items]
Service credits, percent of eligible salaries				6%
Maximum | Prior to January 1, 2003
Net Periodic Benefit Cost [Line Items]
Service credits, percent of eligible salaries				12%

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 26, 2023
Earnings Per Share [Abstract]
Stock dividend, percent		300%	300%	300%	300%	3%
Net Income		$ 7,743	$ 12,163	$ 22,352	$ 36,712
Weighted Average Shares - Basic (in shares)	[1]	17,050	17,007	17,049	17,001
Earnings Per Share - Basic (in dollars per share)		$ 0.46	$ 0.72	$ 1.31	$ 2.16
Dilutive Average Shares Attributable to Stock Options (in shares)		0	47	0	49
Weighted Average Shares - Diluted (in shares)	[1]	17,050	17,054	17,049	17,050
Earnings Per Share - Diluted (in dollars per share)		$ 0.46	$ 0.72	$ 1.31	$ 2.15
[1] 2022 Share and Per Share Amounts have been restated for the September 26, 2023 3% stock dividend.

Fair Values - Recurring and Non

Fair Values - Recurring and Nonrecurring (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	$ 1,960	$ 2,174	$ 2,126
Available-for-Sale at Fair Value	519,240	573,495	575,054
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	1,960	2,174	2,126
Total Securities Measured on a Recurring Basis	521,200	575,669	577,180
Derivative Assets	8,860	7,506	8,508
Total Measured on a Recurring Basis	530,060	583,175	585,688
Derivative Liabilities	8,733	7,506	8,508
Total Measured on a Recurring Basis	8,733	7,506	8,508
Available-for-Sale at Fair Value	519,240	573,495	575,054
Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Indentical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0	0
Total Securities Measured on a Recurring Basis	0	0	0
Derivative Assets	0	0	0
Total Measured on a Recurring Basis	0	0	0
Derivative Liabilities	0	0	0
Total Measured on a Recurring Basis	0	0	0
Available-for-Sale at Fair Value	0	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	1,960	2,174	2,126
Total Securities Measured on a Recurring Basis	521,200	575,669	577,180
Derivative Assets	8,860	7,506	8,508
Total Measured on a Recurring Basis	530,060	583,175	585,688
Derivative Liabilities	8,733	7,506	8,508
Total Measured on a Recurring Basis	8,733	7,506	8,508
Available-for-Sale at Fair Value	519,240	573,495	575,054
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0	0
Total Securities Measured on a Recurring Basis	0	0	0
Derivative Assets	0	0	0
Total Measured on a Recurring Basis	0	0	0
Derivative Liabilities	0	0	0
Total Measured on a Recurring Basis	0	0	0
Available-for-Sale at Fair Value	0	0	0
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Evaluated Loans	0	0	0
Collateral Dependent Impaired Loans, Losses Recognized in Earnings
Other Real Estate Owned and Repossessed Assets, Net	526	593	604
Other Real Estate owned and Repossessed Assets, Net, Losses Recognized in Earnings	0	0	0
Fair Value, Measurements, Nonrecurring | Quoted Prices In Active Markets for Indentical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Evaluated Loans	0	0	0
Other Real Estate Owned and Repossessed Assets, Net	0	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Evaluated Loans	0	0	0
Other Real Estate Owned and Repossessed Assets, Net	0	0	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral Dependent Evaluated Loans	0	0	0
Other Real Estate Owned and Repossessed Assets, Net	526	593	604
U.S. Government & Agency Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	176,421	175,199	163,965
U.S. Government & Agency Obligations | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	176,421	175,199	163,965
U.S. Government & Agency Obligations | Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Indentical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
U.S. Government & Agency Obligations | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	176,421	175,199	163,965
U.S. Government & Agency Obligations | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
State and Municipal Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	280	340	340
State and Municipal Obligations | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	280	340	340
State and Municipal Obligations | Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Indentical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
State and Municipal Obligations | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	280	340	340
State and Municipal Obligations | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
Mortgage-Backed Securities - Residential | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	341,739	397,156	409,949
Mortgage-Backed Securities - Residential | Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Indentical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
Mortgage-Backed Securities - Residential | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	341,739	397,156	409,949
Mortgage-Backed Securities - Residential | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
Corporate and Other Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	800	800	800
Corporate and Other Debt Securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	800	800	800
Corporate and Other Debt Securities | Fair Value, Measurements, Recurring | Quoted Prices In Active Markets for Indentical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	0	0	0
Corporate and Other Debt Securities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	800	800	800
Corporate and Other Debt Securities | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale at Fair Value	$ 0	$ 0	$ 0

Fair Values - Fair Value by Bal

Fair Values - Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Carrying Value
Cash and Cash Equivalents	$ 294,739	$ 64,660	$ 373,429	$ 457,696
Securities Available-for-Sale	519,240	573,495	575,054
Held-To-Maturity Securities, at Amortized Cost	140,577	175,364	182,178
Equity Securities	1,960	2,174	2,126
Net Loans	3,107,505	2,953,255	2,895,562
Deposits	3,666,485	3,498,364	3,795,105
Borrowings	174,300	54,800	25,000
Federal Home Loan Bank Term Advances	10,000	27,000	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Fair Value
Securities Available-for-Sale	519,240	573,495	575,054
Securities Held-to-Maturity	134,811	171,623	175,800
Equity Securities	1,960	2,174	2,126
Carrying Amount
Carrying Value
Cash and Cash Equivalents	294,739	64,660	373,429
Securities Available-for-Sale	519,240	573,495	575,054
Held-To-Maturity Securities, at Amortized Cost	140,577	175,364	182,178
Equity Securities	1,960	2,174	2,126
Federal Home Loan Bank and Federal Reserve Bank Stock	5,110	6,064	4,720
Net Loans	3,107,505	2,953,255	2,895,562
Accrued Interest Receivable	11,163	9,890	8,549
Derivative Assets	8,860	7,506	8,508
Deposits	3,666,485	3,498,364	3,795,105
Federal Home Loan Bank Term Advances		27,800
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	7,432	357	202
Derivative Liabilities	8,733	7,506	8,508
Fair Value
Securities Available-for-Sale	519,240	573,495	575,054
Equity Securities	1,960	2,174	2,126
Derivative Assets	8,860	7,506	8,508
Federal Home Loan Bank Term Advances			25,000
Derivative Liabilities	8,733	7,506	8,508
Fair Value
Carrying Value
Securities Available-for-Sale	519,240	573,495	575,054
Equity Securities	1,960	2,174	2,126
Derivative Assets	8,860	7,506	8,508
Derivative Liabilities	8,733	7,506	8,508
Fair Value
Cash and Cash Equivalents	294,739	64,660	373,429
Securities Available-for-Sale	519,240	573,495	575,054
Securities Held-to-Maturity	134,811	171,623	175,800
Equity Securities	1,960	2,174	2,126
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	5,110	6,064	4,720
Net Loans	2,867,016	2,742,721	2,714,587
Accrued Interest Receivable	11,163	9,890	8,549
Derivative Assets	8,860	7,506	8,508
Deposits	3,660,360	3,492,021	3,785,960
Borrowings	173,709
Federal Home Loan Bank Term Advances		27,757	24,833
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	7,432	357	202
Derivative Liabilities	8,733	7,506	8,508
Quoted Prices In Active Markets for Indentical Assets (Level 1) | Fair Value
Carrying Value
Securities Available-for-Sale	0	0	0
Equity Securities	0		0
Derivative Assets		0	0
Derivative Liabilities	0	0	0
Fair Value
Cash and Cash Equivalents	294,739	64,660	373,429
Securities Available-for-Sale	0	0	0
Securities Held-to-Maturity	0	0	0
Equity Securities	0		0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	0	0	0
Net Loans	0	0	0
Accrued Interest Receivable	0	0	0
Derivative Assets		0	0
Deposits	0	0	0
Borrowings	0
Federal Home Loan Bank Term Advances		0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	0	0	0
Accrued Interest Payable	0	0	0
Derivative Liabilities	0	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
Carrying Value
Securities Available-for-Sale	519,240	573,495	575,054
Equity Securities	1,960	2,174	2,126
Derivative Assets	8,860	7,506	8,508
Derivative Liabilities	8,733	7,506	8,508
Fair Value
Cash and Cash Equivalents	0	0	0
Securities Available-for-Sale	519,240	573,495	575,054
Securities Held-to-Maturity	134,811	171,623	175,800
Equity Securities	1,960	2,174	2,126
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	5,110	6,064	4,720
Net Loans	0	0	0
Accrued Interest Receivable	11,163	9,890	8,549
Derivative Assets	8,860	7,506	8,508
Deposits	3,660,360	3,492,021	3,785,960
Borrowings	173,709
Federal Home Loan Bank Term Advances		27,757	24,833
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	7,432	357	202
Derivative Liabilities	8,733	7,506	8,508
Significant Unobservable Inputs (Level 3) | Fair Value
Carrying Value
Securities Available-for-Sale	0	0	0
Equity Securities	0
Derivative Assets		0	0
Derivative Liabilities	0	0	0
Fair Value
Cash and Cash Equivalents	0	0	0
Securities Available-for-Sale	0	0	0
Securities Held-to-Maturity	0	0	0
Equity Securities	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value	0	0	0
Net Loans	2,867,016	2,742,721	2,714,587
Accrued Interest Receivable	0	0	0
Derivative Assets		0	0
Deposits	0	0	0
Borrowings	0
Federal Home Loan Bank Term Advances		0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	0	0	0
Accrued Interest Payable	0	0	0
Derivative Liabilities	$ 0	$ 0	$ 0

Leases - Narrative (Details)

Leases - Narrative (Details)	9 Months Ended
	Sep. 30, 2023 office
Leases [Abstract]
Number of branch offices	2

Leases - Quantitative Lease Dat

Leases - Quantitative Lease Data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Finance Lease Amounts:
Right-of-Use Assets	$ 4,504	$ 4,681	$ 4,504	$ 4,681
Lease Liabilities	5,080	5,131	5,080	5,131	$ 5,119
Operating Lease Amounts:
Right-of-Use Assets	4,978	5,889	4,978	5,889
Lease Liabilities	$ 5,179	$ 6,082	5,179	6,082
Cash Paid For Amounts Included In The Measurement Of Lease Liabilities:
Operating Outgoing Cash Flows From Finance Leases			143	145
Operating Outgoing Cash Flows From Operating Leases			781	1,041
Financing Outgoing Cash Flows From Finance Leases			39	38
Right-of-Use Assets Obtained In Exchange For New Finance Lease Liabilities			0	0
Right-of-Use Assets Obtained In Exchange For New Operating Lease Liabilities			$ 19	$ 0
Weighted-average Remaining Lease Term - Finance Leases (Yrs.)	26 years 6 months 14 days	27 years 6 months	26 years 6 months 14 days	27 years 6 months
Weighted-average Remaining Lease Term - Operating Leases (Yrs.)	11 years 5 months 12 days	11 years 4 months 9 days	11 years 5 months 12 days	11 years 4 months 9 days
Weighted-average Discount Rate—Finance Leases	3.75%	3.75%	3.75%	3.75%
Weighted-average Discount Rate—Operating Leases	3.01%	2.87%	3.01%	2.87%
Finance Lease Cost:
Reduction of Right-of-Use Assets	$ 44	$ 44	$ 132	$ 133
Interest on Lease Liabilities	46	48	143	145
Operating Lease Cost	195	305	786	925
Short-term Lease Cost	11	9	46	32
Variable Lease Cost	58	86	179	253
Total Lease Cost	$ 354	$ 492	$ 1,286	$ 1,488

Leases - Future Lease Payments

Leases - Future Lease Payments on Finance and Operating Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Operating Leases
2024	$ 733
2025	653
2026	590
2027	561
2028	486
Thereafter	3,212
Total Undiscounted Cash Flows	6,235
Less: Net Present Value Adjustment	1,056
Lease Liabilities	5,179		$ 6,082
Financing Leases
2024	247
2025	259
2026	268
2027	268
2028	268
Thereafter	7,063
Total Undiscounted Cash Flows	8,373
Less: Net Present Value Adjustment	3,293
Lease Liabilities	$ 5,080	$ 5,119	$ 5,131

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements And Fair Value Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Not Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative asset	$ 8,733	$ 7,506	$ 8,508
Derivative liability	8,733	7,506	8,508
Notional amount	124,350	127,763	134,406
Designated as Hedging Instrument | Fair Value Swap
Derivative [Line Items]
Derivative asset	885	0	0
Derivative liability	0	0	0
Notional amount	$ 300,000	$ 0	$ 0

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Narrative (Details) $ in Thousands	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)
Fair Value Swap | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 300,000	$ 0	$ 0
Fair Value Swap | Fair Value Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Number of Instruments Held | security	2
Fair Value Swap, 1 | Fair Value Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 250,000
Fair Value Swap, 2 | Fair Value Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	50,000
Interest Rate Swap
Derivative [Line Items]
Amount of hedged item	$ 20,000

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Fair Value Hedging Relationships Recognized On Statement Of Income (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Hedged Asset	$ (758)	$ 0	$ 0
Fair value derivative designated as hedging instrument	885	0	0
Total gain recognized in the consolidated statements of income with interest and fees on loans	$ 127	$ 0	$ 0

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Fair Value Swap Agreements (Details) - Fair Value Swap - Fair Value Hedging - Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Derivative [Line Items]
Carrying Value of Portfolio Layer Method Hedged Asset	$ 299,242	$ 0	$ 0
Cumulative Fair Value Hedging Adjustment	$ (758)	$ 0	$ 0

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Cash Flow Hedge Agreements (Details) - Interest Rate Swap - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Mar. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Derivative [Line Items]
Amount of (loss) gain recognized in AOCI		$ 125	$ 3,737	$ 3,467
Amount of (loss) gain reclassified from AOCI to interest expense	$ (204)	$ (660)	$ (57)

Related Party Transactions (Det

Related Party Transactions (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Construction Services | Director
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	$ 2.7