The First Bancorp, Inc. (FNLC) 10-Q 3 Nov 23 2023 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2023	Nov. 01, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Entity File Number	0-26589
Entity Registrant Name	FIRST BANCORP, INC
Entity Incorporation, State or Country Code	ME
Entity Tax Identification Number	01-0404322
Entity Address, Address Line One	Main Street
Entity Address, City or Town	Damariscotta
Entity Address, State or Province	ME
Entity Address, Postal Zip Code	04543
City Area Code	207
Local Phone Number	563-3195
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	FNLC
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		11,093,965
Entity Central Index Key	0000765207
Current Fiscal Year End Date	--12-31
Transition Report	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Assets
Cash and cash equivalents		$ 29,894	$ 22,728	$ 27,408
Interest bearing deposits in other banks		38,366	3,693	65,786
Securities available for sale		284,972	284,509	283,268
Securities held-to-maturity, net of allowance for credit losses of $432,000 at September 30, 20231 (fair value of $311,864,000 at September 30, 2023, $339,011,000 at December 31, 2022 and $313,796,000 at September 30, 2022)	[1]	387,374	393,896	381,906
Restricted equity securities, at cost		3,860	3,883	4,514
Loans held for sale		268	275	0
Loans		2,079,860	1,914,674	1,857,975
Less allowance for credit losses		23,322	16,723	16,387
Net loans		2,056,538	1,897,951	1,841,588
Accrued interest receivable		12,038	9,829	8,176
Premises and equipment, net		28,868	28,277	28,548
Goodwill		30,646	30,646	30,646
Other assets		71,315	63,491	63,225
Total assets		2,944,139	2,739,178	2,735,065
Liabilities
Demand deposits		323,375	318,626	356,867
NOW deposits		683,180	630,416	656,865
Money market deposits		271,056	192,632	188,729
Savings deposits		313,160	369,532	381,312
Certificates of deposit		1,009,166	867,671	786,176
Total deposits		2,599,937	2,378,877	2,369,949
Borrowed funds – short term		82,993	103,399	118,258
Borrowed funds – long term		0	84	85
Other liabilities		34,544	27,895	26,856
Total liabilities		2,717,474	2,510,255	2,515,148
Shareholders' equity
Common stock, one cent par value per share		111	110	110
Additional paid-in capital		69,649	68,435	68,028
Retained earnings		209,132	204,343	198,902
Accumulated other comprehensive income (loss)
Net unrealized loss on securities available-for-sale		(53,852)	(44,718)	(47,661)
Net unrealized loss on securities transferred from available-for-sale to held-to-maturity		(58)	(64)	(67)
Net unrealized gain on cash flow hedging derivative instruments		1,410	544	500
Net unrealized gain on postretirement costs		273	273	105
Total shareholders' equity		226,665	228,923	219,917
Total liabilities & shareholders' equity		$ 2,944,139	$ 2,739,178	$ 2,735,065
Common Stock
Number of shares authorized (in shares)		18,000,000	18,000,000	18,000,000
Number of shares issued (in shares)		11,089,290	11,045,186	11,038,224
Number of shares outstanding (in shares)		11,089,290	11,045,186	11,038,224
Book value per common share (usd per share)		$ 20.44	$ 20.73	$ 19.92
Tangible book value per common share (usd per share)		$ 17.66	$ 17.93	$ 17.13
[1]December 31, 2022 and September 30, 2022 had no allowance for credit losses

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2023		Dec. 31, 2022	Sep. 30, 2022
Assets
Securities to be held to maturity, allowance for credit loss	$ 432,000	[1]	$ 0	$ 0
Securities to be held to maturity, fair value	$ 311,864,000		$ 339,011,000	$ 313,796,000
Shareholders' equity
Common stock par value (usd per share)	$ 0.01		$ 0.01	$ 0.01
[1]December 31, 2022 and September 30, 2022 had no allowance for credit losses

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income
Interest and fees on loans (includes YTD tax-exempt income of $1,362,000 for September 30, 2023 and $879,000 for September 30, 2022)	$ 28,329	$ 19,564	$ 78,860	$ 53,463
Interest on deposits with other banks	211	92	300	163
Interest and dividends on investments (includes YTD tax-exempt income of $6,030,000 for September 30, 2023 and $5,588,000 for September 30, 2022)	4,714	4,335	14,192	12,329
Total interest income	33,254	23,991	93,352	65,955
Interest expense
Interest on deposits	16,992	4,164	42,384	8,190
Interest on borrowed funds	308	463	1,614	1,083
Total interest expense	17,300	4,627	43,998	9,273
Net interest income	15,954	19,364	49,354	56,682
Provision (reduction) for credit losses - loans	(161)	400	419	1,300
Provision (reduction) for credit losses - debt securities HTM	3	0	(7)	0
Provision (reduction) for credit losses - off-balance sheet credit exposures	(42)	0	89	0
Total provision for credit losses	(200)	400	501	1,300
Net interest income after provision for credit losses	16,154	18,964	48,853	55,382
Non-interest income
Net securities gains	0	6	0	7
Other operating income	675	684	1,962	2,031
Total non-interest income	3,891	4,715	11,330	13,027
Non-interest expense
Salaries and employee benefits	5,523	5,757	16,420	17,092
Occupancy expense	784	720	2,494	2,298
Furniture and equipment expense	1,403	1,266	4,009	3,740
FDIC insurance premiums	551	298	1,429	738
Amortization of identified intangibles	7	17	20	52
Other operating expense	2,738	3,313	8,199	8,273
Total non-interest expense	11,006	11,371	32,571	32,193
Income before income taxes	9,039	12,308	27,612	36,216
Income tax expense	1,565	2,217	4,773	6,423
NET INCOME	$ 7,474	$ 10,091	$ 22,839	$ 29,793
Basic earnings per common share (usd per share)	$ 0.68	$ 0.92	$ 2.08	$ 2.73
Diluted earnings per common share (usd per share)	$ 0.67	$ 0.91	$ 2.06	$ 2.70
Other comprehensive income (loss) net of tax
Net unrealized loss on securities available for sale, net of taxes	$ (10,071)	$ (14,866)	$ (9,134)	$ (45,943)
Net unrealized gain on transferred securities, net of taxes	1	6	6	20
Net unrealized gain on hedging derivative instruments	730	354	866	500
Other comprehensive loss	(9,340)	(14,506)	(8,262)	(45,423)
Comprehensive income (loss)	(1,866)	(4,415)	14,577	(15,630)
Investment management and fiduciary income
Non-interest income
Non-interest income	1,160	1,087	3,515	3,513
Service charges on deposit accounts
Non-interest income
Non-interest income	465	454	1,399	1,358
Mortgage origination and servicing income, net of amortization
Non-interest income
Non-interest income	224	356	611	1,234
Debit card income
Non-interest income
Non-interest income	$ 1,367	$ 2,128	$ 3,843	$ 4,884

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Interest and fees on loans (tax-exempt income)	$ 1,362	$ 879
Interest and dividends on investments (tax-exempt income)	$ 6,030	$ 5,588

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common stock and additional paid-in capital	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive income (loss)
Beginning balance (in shares) at Dec. 31, 2021			10,998,765
Balance at beginning of period at Dec. 31, 2021	$ 245,657		$ 66,940	$ 180,417		$ (1,700)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,793			29,793
Net unrealized loss on securities available for sale, net of tax	(45,943)					(45,943)
Net unrealized gain on securities transferred from available for sale to held to maturity, net of tax	20					20
Net unrealized gain on cash flow hedging derivative instruments, net of tax	500					500
Comprehensive income (loss)	(15,630)			29,793		(45,423)
Cash dividends declared	(11,032)			(11,032)
Equity compensation expense	610		$ 610
Payment to repurchase common stock (in shares)			(8,640)
Payment to repurchase common stock	(276)			(276)
Issuance of restricted stock (in shares)			28,745
Proceeds from sale of common stock (in shares)			19,354
Proceeds from sale of common stock	$ 588		$ 588
Ending balance (in shares) at Sep. 30, 2022	11,038,224		11,038,224
Balance at end of period at Sep. 30, 2022	$ 219,917		$ 68,138	198,902		(47,123)
Beginning balance (in shares) at Dec. 31, 2021			10,998,765
Balance at beginning of period at Dec. 31, 2021	$ 245,657		$ 66,940	180,417		(1,700)
Ending balance (in shares) at Dec. 31, 2022	11,045,186		11,045,186
Balance at end of period at Dec. 31, 2022	$ 228,923	$ (6,277)	$ 68,545	204,343	$ (6,277)	(43,965)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13 [Member]
Beginning balance (in shares) at Jun. 30, 2022			11,030,236
Balance at beginning of period at Jun. 30, 2022	$ 227,685		$ 67,737	192,565		(32,617)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,091			10,091
Net unrealized loss on securities available for sale, net of tax	(14,866)					(14,866)
Net unrealized gain on securities transferred from available for sale to held to maturity, net of tax	6					6
Net unrealized gain on cash flow hedging derivative instruments, net of tax	354					354
Comprehensive income (loss)	(4,415)			10,091		(14,506)
Cash dividends declared	(3,754)			(3,754)
Equity compensation expense	198		$ 198
Issuance of restricted stock (in shares)			1,250
Proceeds from sale of common stock (in shares)			6,738
Proceeds from sale of common stock	$ 203		$ 203
Ending balance (in shares) at Sep. 30, 2022	11,038,224		11,038,224
Balance at end of period at Sep. 30, 2022	$ 219,917		$ 68,138	198,902		(47,123)
Beginning balance (in shares) at Dec. 31, 2022	11,045,186		11,045,186
Balance at beginning of period at Dec. 31, 2022	$ 228,923	$ (6,277)	$ 68,545	204,343	$ (6,277)	(43,965)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22,839			22,839
Net unrealized loss on securities available for sale, net of tax	(9,134)					(9,134)
Net unrealized gain on securities transferred from available for sale to held to maturity, net of tax	6					6
Net unrealized gain on cash flow hedging derivative instruments, net of tax	866					866
Comprehensive income (loss)	14,577			22,839		(8,262)
Cash dividends declared	(11,525)			(11,525)
Equity compensation expense	607		$ 607
Payment to repurchase common stock (in shares)			(12,629)
Payment to repurchase common stock	(248)			(248)
Issuance of restricted stock (in shares)			33,610
Proceeds from sale of common stock (in shares)			23,123
Proceeds from sale of common stock	$ 608		$ 608
Ending balance (in shares) at Sep. 30, 2023	11,089,290		11,089,290
Balance at end of period at Sep. 30, 2023	$ 226,665		$ 69,760	209,132		(52,227)
Beginning balance (in shares) at Jun. 30, 2023			11,081,800
Balance at beginning of period at Jun. 30, 2023	232,003		$ 69,351	205,539		(42,887)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,474			7,474
Net unrealized loss on securities available for sale, net of tax	(10,071)					(10,071)
Net unrealized gain on securities transferred from available for sale to held to maturity, net of tax	1					1
Net unrealized gain on cash flow hedging derivative instruments, net of tax	730					730
Comprehensive income (loss)	(1,866)			7,474		(9,340)
Cash dividends declared	(3,881)			(3,881)
Equity compensation expense	210		$ 210
Payment to repurchase common stock (in shares)			(250)
Proceeds from sale of common stock (in shares)			7,740
Proceeds from sale of common stock	$ 199		$ 199
Ending balance (in shares) at Sep. 30, 2023	11,089,290		11,089,290
Balance at end of period at Sep. 30, 2023	$ 226,665		$ 69,760	$ 209,132		$ (52,227)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (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 declared (usd per share)	$ 0.35	$ 0.34	$ 1.04	$ 1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income	$ 22,839	$ 29,793
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	1,563	1,495
Change in deferred taxes	(1,283)	19
Provision for credit losses	501	1,300
Loans originated for resale	(3,082)	(20,152)
Proceeds from sales and transfers of loans	3,157	21,372
Net gain on sales of loans	(68)	(385)
Net gain on sale or call of securities	0	(7)
Net amortization of premiums on investments	423	763
Net (gain) loss on sale of other real estate owned	(42)	1
Equity compensation expense	607	610
Net increase in other assets and accrued interest	(6,858)	(11,362)
Net increase in other liabilities	8,156	8,720
Net (gain) loss on disposal of premises and equipment	33	(15)
Amortization of investment in limited partnership	227	229
Net acquisition amortization	20	52
Net cash provided by operating activities	26,193	32,433
Cash flows from investing activities
(Increase) decrease in interest-bearing deposits in other banks	(34,673)	892
Proceeds from sales of securities available for sale	0	1,301
Proceeds from maturities, payments and calls of securities available for sale	17,037	35,633
Proceeds from maturities, payments, calls and sales of securities to be held to maturity	6,023	15,073
Proceeds from sales of other real estate owned	106	50
Purchases of securities available for sale	(29,409)	(58,324)
Purchases of securities to be held to maturity	0	(27,138)
Redemption of restricted equity securities	23	851
Net increase in loans	(165,280)	(210,811)
Capital expenditures	(2,253)	(1,165)
Proceeds from disposal of premises and equipment	3	38
Net cash used by investing activities	(208,423)	(243,600)
Cash flows from financing activities
Net increase in demand, savings, and money market accounts	79,565	26,681
Net increase in certificates of deposit	141,495	219,971
Net (decrease) increase in short-term borrowings	(20,490)	37,006
Repayment on long-term borrowings	0	(55,005)
Payment to repurchase common stock	(248)	(276)
Proceeds from sale of common stock	608	588
Dividends paid	(11,534)	(11,024)
Net cash provided by financing activities	189,396	217,941
Net increase in cash and cash equivalents	7,166	6,774
Cash and cash equivalents at beginning of period	22,728	20,634
Cash and cash equivalents at end of period	29,894	27,408
Interest paid	43,643	9,061
Income taxes paid	4,500	5,745
Non-cash transactions
Change in net unrealized loss on available for sale securities, net of tax	$ 9,134	$ 45,943

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The Company is a financial holding company that owns all of the common stock of the Bank. The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of Management, all adjustments (consisting of normally recurring accruals) considered necessary for a fair presentation have been included. All significant intercompany transactions and balances are eliminated in consolidation. The income reported for the 2023 period is not necessarily indicative of the results that may be expected for the year ending December 31, 2023. For further information, refer to the consolidated financial statements and notes included in the Company's annual report on Form 10-K for the year ended December 31, 2022. The acronyms, abbreviations and definitions identified below are used throughout this Form 10-Q, including Item 1 - Financial Statements and Item 2 - Management's Discussion and Analysis of Financial Condition and Results of Operations. The following is provided to aid the reader and provide a reference page when reviewing these sections of the Form 10-Q. Acronym Description Acronym Description ACL Allowance for credit losses GDP Gross domestic product AFS Available-for-sale GNMA Government National Mortgage Association ALCO Asset/Liability Committee HTM Held-to-maturity AOCI Accumulated other comprehensive income (loss) IRS Internal Revenue Service ASC Accounting Standards Codification LIBOR London Interbank Offered Rate ASU Accounting Standards Update MPF Mortgage Partnership Finance Program BTFP Bank Term Funding Program OAEM Other assets especially mentioned C&I Commercial and Industrial OCC Office of the Comptroller of the Currency CDs Certificates of deposit OCI Other comprehensive income (loss) CECL Current Expected Credit Loss OIS Overnight Indexed Swap CLLD Construction, land, and land development OREO Other real estate owned DFAST Dodd Frank Act Stress Tests POR Period of Redemption EPS Earnings per share PPP Paycheck Protection Program FASB Financial Accounting Standards Board PSA Public Securities Association FDIC Federal Deposit Insurance Corporation SBA Small Business Association FHLB Federal Home Loan Bank SEC Securities and Exchange Commission FHLBB Federal Home Loan Bank of Boston SOFR Secured Overnight Financing Rate FHLMC Federal Home Loan Mortgage Corporation TDR Troubled debt restructuring FNMA Federal National Mortgage Association The 2020 Plan The 2020 Equity Incentive Plan FOMC Federal Open Market Committee The Bank First National Bank FRB Federal Reserve Board The Company The First Bancorp, Inc. FRBB Federal Reserve Bank of Boston U.S. United States of America GAAP Accounting principles generally accepted in the U.S. USD U.S. Dollar Risks and Uncertainties The ongoing conflict between Russia and Ukraine coupled with new tensions in the Middle East have increased economic uncertainty and geopolitical instability. Concern continues to be expressed nationally about the commercial real estate market and the impact a downturn in this sector could have on the banking industry. The failures in 2023 of several regional banks in the U.S. caused disruption in markets in the first half of 2023, and could have a lingering impact. Any or all could have negative downstream effects on the Company's operating results, the extent of which is indeterminable at this time. Subsequent Events Events occurring subsequent to September 30, 2023, have been evaluated as to their potential impact to the financial statements.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table summarizes the amortized cost and estimated fair value of investment securities at September 30, 2023: Amortized Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Treasury & Agency securities $ 45,851,000 $ — $ (7,599,000) $ 38,252,000 Mortgage-backed securities 263,775,000 1,000 (50,930,000) 212,846,000 State and political subdivisions 40,417,000 — (9,637,000) 30,780,000 Asset-backed securities 3,097,000 1,000 (4,000) 3,094,000 $ 353,140,000 $ 2,000 $ (68,170,000) $ 284,972,000 Securities to be held to maturity U.S. Treasury & Agency securities $ 40,100,000 $ — $ (11,996,000) $ 28,104,000 Mortgage-backed securities 57,224,000 4,000 (13,336,000) 43,892,000 State and political subdivisions 255,732,000 16,000 (46,807,000) 208,941,000 Corporate securities 34,750,000 — (3,823,000) 30,927,000 $ 387,806,000 $ 20,000 $ (75,962,000) $ 311,864,000 Less allowance for credit losses (432,000) — — — Net securities to be held to maturity $ 387,374,000 $ — $ — $ — Restricted equity securities Federal Home Loan Bank Stock $ 2,823,000 $ — $ — $ 2,823,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 3,860,000 $ — $ — $ 3,860,000 Allowance for Credit Losses: The Company adopted ASC 326, the CECL standard, in the first quarter of 2023. In conjunction with adoption, holdings of AFS and HTM securities were evaluated to determine the need to establish an allowance for credit losses, if any. AFS securities, as shown in the table above, consist of securities issued by U.S. Government Agencies, U.S. Government Sponsored Entities, State or Local Municipal Governments, or are backed by collateral that is guaranteed by the U.S. Government. We monitor the credit quality of these investments through credit ratings issued by major rating providers and through substantial price changes not consistent with general market movements. Each of the AFS securities is deemed to be investment grade, and no ACL has been established for AFS securities. Similarly, the agency and mortgage-backed securities in the HTM portfolio have been determined to all be investment grade with no ACL required. Municipal securities within HTM include two private activity bonds issued by well-known customers of the Bank with total balances of $19,734,000 as of September 30, 2023. These bonds carry similar risk characteristics to the commercial real estate - owner occupied segment of the Bank's loan portfolio described in Note 3; management has elected to apply a loss rate matching the loan segment to the balance of these bonds for purposes of establishing an ACL. Corporate securities in HTM consist of fourteen individual companies in the banking industry. Management reviewed the collectability of these securities taking into consideration such factors as the financial condition of the issuers, reported regulatory capital ratios of the issuers, and other performance factors. Aggregate credit risk of the corporate securities is considered very low and an immaterial ACL has been established. The total ACL for HTM securities was $432,000 as of September 30, 2023; there was no reserve as of December 31, 2022 and September 30, 2022. Changes in the allowance for credit losses are recorded as credit loss expense, or reversal. Losses would be charged against the allowance when management believes collection of the full contractual amount due on a security is unlikely. The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2022: Amortized Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Treasury & Agency securities $ 26,025,000 $ — $ (6,878,000) $ 19,147,000 Mortgage-backed securities 271,068,000 55,000 (42,447,000) 228,676,000 State and political subdivisions 40,472,000 2,000 (7,283,000) 33,191,000 Asset-backed securities 3,548,000 — (53,000) 3,495,000 $ 341,113,000 $ 57,000 $ (56,661,000) $ 284,509,000 Securities to be held to maturity U.S. Treasury & Agency securities $ 40,100,000 $ 4,000 $ (10,477,000) $ 29,627,000 Mortgage-backed securities 60,497,000 42,000 (11,392,000) 49,147,000 State and political subdivisions 258,549,000 154,000 (30,733,000) 227,970,000 Corporate securities 34,750,000 — (2,483,000) 32,267,000 $ 393,896,000 $ 200,000 $ (55,085,000) $ 339,011,000 Restricted equity securities Federal Home Loan Bank Stock $ 2,846,000 $ — $ — $ 2,846,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 3,883,000 $ — $ — $ 3,883,000 The following table summarizes the amortized cost and estimated fair value of investment securities at September 30, 2022: Amortized Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Treasury & Agency securities $ 26,023,000 $ — $ (6,879,000) $ 19,144,000 Mortgage-backed securities 273,215,000 4,000 (44,041,000) 229,178,000 State and political subdivisions 40,489,000 — (9,383,000) 31,106,000 Asset-backed securities 3,872,000 — (32,000) 3,840,000 $ 343,599,000 $ 4,000 $ (60,335,000) $ 283,268,000 Securities to be held to maturity U.S. Treasury & Agency securities $ 38,100,000 $ — $ (10,428,000) $ 27,672,000 Mortgage-backed securities 56,423,000 48,000 (11,784,000) 44,687,000 State and political subdivisions 257,633,000 38,000 (43,899,000) 213,772,000 Corporate securities 29,750,000 — (2,085,000) 27,665,000 $ 381,906,000 $ 86,000 $ (68,196,000) $ 313,796,000 Restricted equity securities Federal Home Loan Bank Stock $ 3,477,000 $ — $ — $ 3,477,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 4,514,000 $ — $ — $ 4,514,000 The following table summarizes the contractual maturities of investment securities at September 30, 2023: Securities available for sale Securities to be held to maturity Amortized Fair Value (Estimated) Amortized Fair Value (Estimated) Due in 1 year or less $ 19,819,000 $ 19,819,000 $ 2,158,000 $ 2,151,000 Due in 1 to 5 years 3,640,000 3,468,000 15,780,000 14,771,000 Due in 5 to 10 years 28,082,000 23,360,000 92,565,000 81,812,000 Due after 10 years 301,599,000 238,325,000 277,303,000 213,130,000 $ 353,140,000 $ 284,972,000 $ 387,806,000 $ 311,864,000 The following table summarizes the contractual maturities of investment securities at December 31, 2022: Securities available for sale Securities to be held to maturity Amortized Fair Value (Estimated) Amortized Fair Value (Estimated) Due in 1 year or less $ — $ — $ 1,787,000 $ 1,782,000 Due in 1 to 5 years 3,609,000 3,409,000 14,998,000 14,480,000 Due in 5 to 10 years 18,591,000 15,203,000 86,833,000 81,443,000 Due after 10 years 318,913,000 265,897,000 290,278,000 241,306,000 $ 341,113,000 $ 284,509,000 $ 393,896,000 $ 339,011,000 The following table summarizes the contractual maturities of investment securities at September 30, 2022: Securities available for sale Securities to be held to maturity Amortized Fair Value (Estimated) Amortized Fair Value (Estimated) Due in 1 year or less $ 4,000 $ 4,000 $ 1,346,000 $ 1,343,000 Due in 1 to 5 years 3,640,000 3,427,000 15,235,000 14,644,000 Due in 5 to 10 years 18,064,000 14,436,000 75,492,000 68,704,000 Due after 10 years 321,891,000 265,401,000 289,833,000 229,105,000 $ 343,599,000 $ 283,268,000 $ 381,906,000 $ 313,796,000 At September 30, 2023, securities with a carrying value of $383,946,000 were pledged to secure public deposits, repurchase agreements, and for other purposes as required by law. This compares to securities with a carrying value of $350,411,000 as of December 31, 2022 and $343,677,000 at September 30, 2022, pledged for the same purposes. Gains and losses on the sale of securities are computed by subtracting the amortized cost at the time of sale from the security's selling price, net of accrued interest to be received. The following table shows securities gains and losses for the nine months and quarters ended September 30, 2023 and 2022: For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Proceeds from sales of securities $ — $ 1,301,000 $ — $ 1,301,000 Gross realized gains — 8,000 — 6,000 Gross realized losses — (1,000) — (1,000) Net gain (loss) $ — $ 7,000 $ — $ 5,000 Related income taxes $ — $ 1,000 $ — $ 1,000 As of September 30, 2023, there were 941 securities with unrealized losses held in the Company's portfolio. The Company has the ability and intent to hold its securities which are in an unrealized loss position until a recovery of their amortized cost, which may be at maturity. The following table summarizes debt securities in an unrealized loss position for which an allowance for credit losses has not been recorded at September 30, 2023, aggregated by major security type and length of time in a continuous unrealized loss position: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Treasury & Agency securities $ 11,842,000 $ (40,000) $ 44,577,000 $ (19,555,000) $ 56,419,000 $ (19,595,000) Mortgage-backed securities 18,017,000 (441,000) 238,150,000 (63,825,000) 256,167,000 (64,266,000) State and political subdivisions 66,583,000 (6,675,000) 147,818,000 (49,769,000) 214,401,000 (56,444,000) Asset-backed securities — — 1,510,000 (4,000) 1,510,000 (4,000) Corporate securities — — 21,677,000 (3,823,000) 21,677,000 (3,823,000) $ 96,442,000 $ (7,156,000) $ 453,732,000 $ (136,976,000) $ 550,174,000 $ (144,132,000) As of December 31, 2022, there were 869 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 300 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of December 31, 2022 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Treasury & Agency securities $ 4,804,000 $ (675,000) $ 41,965,000 $ (16,680,000) $ 46,769,000 $ (17,355,000) Mortgage-backed securities 73,509,000 (6,486,000) 197,102,000 (47,353,000) 270,611,000 (53,839,000) State and political subdivisions 149,517,000 (13,769,000) 67,932,000 (24,247,000) 217,449,000 (38,016,000) Asset-backed securities 3,495,000 (53,000) — — 3,495,000 (53,000) Corporate securities 19,857,000 (2,143,000) 3,160,000 (340,000) 23,017,000 (2,483,000) $ 251,182,000 $ (23,126,000) $ 310,159,000 $ (88,620,000) $ 561,341,000 $ (111,746,000) As of September 30, 2022, there were 912 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 138 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of September 30, 2022 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Treasury & Agency securities $ 7,364,000 $ (1,264,000) $ 39,452,000 $ (16,043,000) $ 46,816,000 $ (17,307,000) Mortgage-backed securities 109,041,000 (13,868,000) 162,979,000 (41,957,000) 272,020,000 (55,825,000) State and political subdivisions 197,145,000 (44,277,000) 17,902,000 (9,005,000) 215,047,000 (53,282,000) Asset-backed securities 3,840,000 (32,000) — — 3,840,000 (32,000) Corporate securities 20,186,000 (1,814,000) 3,229,000 (271,000) 23,415,000 (2,085,000) $ 337,576,000 $ (61,255,000) $ 223,562,000 $ (67,276,000) $ 561,138,000 $ (128,531,000) Credit Quality Indicators: Agency-backed and government-sponsored enterprise securities have a long history with no credit losses, including during times of severe stress. The principal and interest payments on agency-guaranteed debt is backed by the U.S. Government. Government-sponsored enterprises similarly guarantee principal and interest payments and carry an implicit guarantee from the U.S. Department of the Treasury. Additionally, government-sponsored enterprise securities are exceptionally liquid, readily marketable, and provide a substantial amount of price transparency and price parity, indicating a perception of zero credit losses. HTM municipal debt holdings are comprised primarily of high credit quality (rated A- or higher) state and municipal obligations. High credit quality state and municipal obligations have a history of zero to near-zero credit loss. HTM municipal debt holdings also include two unrated private activity bonds issued by well known customers of the Bank. These securities are regularly monitored as part of an overall credit relationship with the issuers; both issuers were in good standing as of September 30, 2023. HTM corporate debt holdings consist of 14 individual companies in the banking industry. Management conducts periodic reviews of the collectability of these securities taking into consideration such factors as the financial condition of the issuers; each were in good standing as of September 30, 2023. The following table presents the activity in the ACL for held-to-maturity debt securities by major security type for the nine months ended September 30, 2023: State and Political Subdivisions Corporate Securities Total Allowance for credit losses: Beginning balance $ — $ — $ — Impact of adopting ASC 326 229,000 209,000 438,000 Credit loss expense (reduction) 1 (17,000) 11,000 (6,000) Securities charged-off — — — Recoveries — — — Total ending allowance balance $ 212,000 $ 220,000 $ 432,000 1 Difference between total and amount reported on the Consolidated Statements of Income is due to rounding. There was no ACL on U.S. Government-sponsored enterprise and agency securities as of September 30, 2023 . A security is considered to be past due once it is 30 days contractually past due under the terms of the agreement. As of September 30, 2023, none of the Company’s HTM debt securities were past due or on non-accrual status. During the third quarter of 2014, the Company transferred securities with a total amortized cost of $89,780,000 with a corresponding fair value of $89,757,000 from available for sale to held to maturity. The net unrealized loss, net of taxes, on these securities at the date of the transfer was $15,000. The net unrealized holding loss at the time of transfer continues to be reported in AOCI, net of tax and is amortized over the remaining lives of the securities as an adjustment of the yield. The amortization of the net unrealized loss reported in AOCI will offset the effect on interest income of the discount for the transferred securities. The remaining unamortized balance of the net unrealized losses for the securities transferred from available for sale to held to maturity was $58,000, net of taxes, at September 30, 2023. This compares to $64,000 and $67,000, net of taxes, at December 31, 2022 and September 30, 2022, respectively. These securities were transferred as a part of the Company's overall investment and balance sheet strategies. The Bank is a member of the FHLBB, a cooperatively owned wholesale bank for housing and finance in the six New England States. As a requirement of membership in the FHLBB, the Bank must own a minimum required amount of FHLBB stock, calculated periodically based primarily on its level of borrowings from the FHLBB. The Bank uses the FHLBB for a portion of its wholesale funding needs. As of September 30, 2023 and 2022, and December 31, 2022, the Bank's investment in FHLBB stock totaled $2,823,000, $3,477,000 and $2,846,000, respectively. FHLBB stock is a non-marketable equity security and therefore is reported at cost, which equals par value. The Bank is also a member of the FRBB. As a requirement for membership in the FRBB, the Bank must own a minimum required amount of FRBB stock. The Bank uses FRBB for certain correspondent banking services and maintains borrowing capacity at its discount window. The Bank's investment in FRBB stock totaled $1,037,000 at September 30, 2023 and 2022, and December 31, 2022. The Company periodically evaluates its investment in FHLBB and FRBB stock for impairment based on, among other factors, the capital adequacy of the Banks and their overall financial condition. No impairment losses have been recorded through September 30, 2023. The Bank will continue to monitor its investment in these restricted equity securities.

Loans

Loans	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans	Loans Upon adoption of ASU 2016-13/ASC 326, the CECL standard, as described in Notes 4 and 16 of these financial statements, the Company updated the segmentation of its loan portfolio. The updates primarily consist of reporting what had been a single class, commercial real estate loans, as three classes - commercial real estate owner occupied, commercial real estate non-owner occupied, and commercial multi-family. In addition home equity installment loans which had previously been included in the residential term class are now included in the home equity revolving and term class. Loan data as of September 30, 2023 is reported herein with the new class structure while certain prior period data retains the prior class structure. Loan Portfolio by Class: The following table shows the composition of the Company's loan portfolio by class of financing receivable as of September 30, 2023 and 2022 and at December 31, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Commercial Real estate owner occupied $ 299,943,000 14.4 % $ 256,623,000 13.4 % $ 251,410,000 13.6 % Real estate non-owner occupied 397,024,000 19.1 % 363,660,000 19.0 % 315,514,000 17.0 % Construction 72,424,000 3.5 % 93,907,000 4.9 % 129,036,000 6.9 % C&I 350,596,000 16.9 % 319,359,000 16.7 % 310,110,000 16.7 % Multifamily 91,041,000 4.4 % 79,057,000 4.1 % 71,784,000 3.9 % Municipal 58,447,000 2.8 % 40,619,000 2.1 % 48,702,000 2.6 % Residential Term 660,049,000 31.7 % 597,404,000 31.2 % 581,066,000 31.3 % Construction 28,986,000 1.4 % 49,907,000 2.6 % 41,631,000 2.2 % Home Equity Revolving and term 101,980,000 4.9 % 93,075,000 4.9 % 87,903,000 4.7 % Consumer 19,370,000 0.9 % 21,063,000 1.1 % 20,819,000 1.1 % Total $ 2,079,860,000 100.0 % $ 1,914,674,000 100.0 % $ 1,857,975,000 100.0 % Loan balances include net deferred loan costs of $11,213,000 as of September 30, 2023, $10,132,000 as of December 31, 2022, and $9,978,000 as of September 30, 2022. Net deferred loan costs have increased from a year ago and year-to-date due to loan origination unit volume over the period. Loan balances in the Residential Term segment also include a valuation adjustment for fair value swaps hedged by certain loans in the portfolio. This adjustment subtracted $705,000 from the loan balances as of September 30, 2023; there was no such adjustment as of December 31, 2022 or September 30, 2022. Pursuant to collateral agreements, qualifying first mortgage loans and commercial real estate loans, which totaled $525,904,000 at September 30, 2023, were used to collateralize borrowings from the FHLBB. This compares to qualifying loans which totaled $475,233,000 at December 31, 2022, and $464,069,000 at September 30, 2022. In addition, commercial, residential construction and home equity loans totaling $332,657,000 at September 30, 2023, $338,636,000 at December 31, 2022, and $327,551,000 at September 30, 2022, were used to collateralize a standby line of credit at the FRBB. In September 2022 the Bank sold a block of 41 mixed performing residential mortgage loans. This block of loans carried general ledger balances that totaled $5.2 million and included a number of past-due, non-accrual, and TDR loans. The impact of the sale on the portfolio is included in the information presented herein for the prior year. Past Due Loans: For all loan classes, loans over 30 days past due are considered delinquent. Information on the past-due status of loans by class of financing receivable as of September 30, 2023, is presented in the following table: 30-59 Days 60-89 Days 90+ Days All Current Total 90+ Days Commercial Real estate owner occupied $ — $ — $ — $ — $ 299,943,000 $ 299,943,000 $ — Real estate non-owner occupied — — — — 397,024,000 397,024,000 — Construction — 7,000 8,000 15,000 72,409,000 72,424,000 — C&I 349,000 100,000 221,000 670,000 349,926,000 350,596,000 — Multifamily — — — — 91,041,000 91,041,000 — Municipal — — — — 58,447,000 58,447,000 — Residential Term 39,000 106,000 578,000 723,000 659,326,000 660,049,000 — Construction — 62,000 — 62,000 28,924,000 28,986,000 — Home equity Revolving and term 79,000 — 179,000 258,000 101,722,000 101,980,000 — Consumer 210,000 39,000 11,000 260,000 19,110,000 19,370,000 11,000 Total $ 677,000 $ 314,000 $ 997,000 $ 1,988,000 $ 2,077,872,000 $ 2,079,860,000 $ 11,000 Information on the past-due status of loans by class of financing receivable as of December 31, 2022, is presented in the following table: 30-59 Days 60-89 Days 90+ Days All Current Total 90+ Days Commercial Real estate $ — $ 3,000 $ 190,000 $ 193,000 $ 699,147,000 $ 699,340,000 $ — Construction — — — — 93,907,000 93,907,000 — Other 118,000 23,000 85,000 226,000 319,133,000 319,359,000 34,000 Municipal — — — — 40,619,000 40,619,000 — Residential Term 135,000 33,000 284,000 452,000 596,952,000 597,404,000 118,000 Construction — — — — 49,907,000 49,907,000 — Home equity line of credit 241,000 29,000 151,000 421,000 92,654,000 93,075,000 86,000 Consumer 131,000 33,000 3,000 167,000 20,896,000 21,063,000 3,000 Total $ 625,000 $ 121,000 $ 713,000 $ 1,459,000 $ 1,913,215,000 $ 1,914,674,000 $ 241,000 Information on the past-due status of loans by class of financing receivable as of September 30, 2022, is presented in the following table: 30-59 Days 60-89 Days 90+ Days All Current Total 90+ Days Commercial Real estate $ — $ 4,000 $ 191,000 $ 195,000 $ 638,513,000 $ 638,708,000 $ — Construction — — — — 129,036,000 129,036,000 — Other 172,000 16,000 83,000 271,000 309,839,000 310,110,000 — Municipal — — — — 48,702,000 48,702,000 — Residential Term 79,000 77,000 166,000 322,000 580,744,000 581,066,000 — Construction — — — — 41,631,000 41,631,000 — Home equity line of credit 473,000 29,000 — 502,000 87,401,000 87,903,000 — Consumer 143,000 28,000 — 171,000 20,648,000 20,819,000 — Total $ 867,000 $ 154,000 $ 440,000 $ 1,461,000 $ 1,856,514,000 $ 1,857,975,000 $ — Non-Accrual Loans: For all classes, loans are placed on non-accrual status when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement or when principal and interest is 90 days or more past due unless the loan is both well secured and in the process of collection (in which case the loan may continue to accrue interest in spite of its past due status). A loan is "well secured" if it is secured (1) by collateral in the form of liens on or pledges of real or personal property, including securities, that have a realizable value sufficient to discharge the debt (including accrued interest) in full, or (2) by the guarantee of a financially responsible party. A loan is "in the process of collection" if collection of the loan is proceeding in due course either (1) through legal action, including judgment enforcement procedures, or, (2) in appropriate circumstances, through collection efforts not involving legal action which are reasonably expected to result in repayment of the debt or in its restoration to a current status in the near future. Cash payments received on non-accrual loans are applied to reduce the loan's principal balance until the remaining principal balance is deemed collectible, after which interest is recognized when collected. As a general rule, a loan may be restored to accrual status when payments are current for a substantial period of time, generally six months, and repayment of the remaining contractual amounts is expected, or when it otherwise becomes well secured and in the process of collection. The following table presents the amortized costs basis of loans on nonaccrual status as of September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Nonaccrual with Allowance for Credit Loss Nonaccrual with no Allowance for Credit Loss Total Nonaccrual Total Nonaccrual Total Nonaccrual Commercial Real estate owner occupied $ — $ — $ — $ 193,000 $ 195,000 Real estate non-owner occupied — — — — — Construction — 29,000 29,000 23,000 25,000 C&I 363,000 351,000 714,000 663,000 756,000 Multifamily — — — — — Municipal — — — — — Residential Term 304,000 1,016,000 1,320,000 572,000 637,000 Construction — — — — — Home equity Revolving and term — 490,000 490,000 304,000 247,000 Consumer — — — — — Total $ 667,000 $ 1,886,000 $ 2,553,000 $ 1,755,000 $ 1,860,000 Individually Analyzed Loans: Individually analyzed loans include loans placed on non-accrual and loans reported as TDR prior to adoption of ASU 2022-02 Troubled Debt Restructurings and Vintage Disclosures, with balances of $250,000 or more. These loans are measured at the present value of expected future cash flows discounted at the loan's effective interest rate or at the fair value of the collateral if the loan is collateral dependent. If the measure of an individually analyzed loan is lower than the recorded investment in the loan and estimated selling costs, a specific reserve is established for the difference, or, in certain situations, if the measure of an individually analyzed loan is lower than the recorded investment in the loan and estimated selling costs, the difference is written off. The following table presents the amortized cost basis of collateral-dependent loans as of September 30, 2023 by collateral type: Collateral Type Commercial Real Estate Residential Real Estate Total Commercial Real estate owner occupied $ — $ — $ — Real estate non-owner occupied — — — Construction — — — C&I — — — Multifamily — — — Municipal — — — Residential Term — 687,000 687,000 Construction — — — Home Equity Revolving and term — — — Consumer — — — Total $ — $ 687,000 $ 687,000 Collateral-dependent loans are loans for which the repayment is expected to be provided substantially by the underlying collateral and there are no other available and reliable sources of repayment. A breakdown of individually analyzed loans by class of financing receivable as of and for the period ended September 30, 2023 is presented in the following table: For the nine months ended September 30, 2023 For the quarter ended September 30, 2023 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate owner occupied $ — $ — $ — $ 143,000 $ — $ — $ — Real estate non-owner occupied — — — 537,000 — — (12,000) Construction — — — 157,000 — — — C&I — — — 72,000 — — — Multifamily — — — — — — — Municipal — — — — — — — Residential Term 384,000 411,000 — 977,000 15,000 384,000 8,000 Construction — — — — — — — Home Equity Revolving and term — — — 238,000 — — — Consumer — — — — — — — $ 384,000 $ 411,000 $ — $ 2,124,000 $ 15,000 $ 384,000 $ (4,000) With an Allowance Recorded Commercial Real estate owner occupied $ — $ — $ — $ — $ — $ — $ — Real estate non-owner occupied — — — — — — — Construction — — — — — — — C&I 363,000 456,000 225,000 502,000 — 366,000 — Multifamily — — — — — — — Municipal — — — — — — — Residential Term 566,000 573,000 41,000 878,000 10,000 697,000 (2,000) Construction — — — — — — — Home Equity Revolving and term — — — 9,000 — — — Consumer — — — — — — — $ 929,000 $ 1,029,000 $ 266,000 $ 1,389,000 $ 10,000 $ 1,063,000 $ (2,000) Total Commercial Real estate owner occupied $ — $ — $ — $ 143,000 $ — $ — $ — Real estate non-owner occupied — — — 537,000 — — (12,000) Construction — — — 157,000 — $ — — C&I 363,000 456,000 225,000 574,000 — 366,000 — Multifamily — — — — — — — Municipal — — — — — — — Residential Term 950,000 984,000 41,000 1,855,000 25,000 1,081,000 6,000 Construction — — — — — — — Home Equity Revolving and term — — — 247,000 — — — Consumer — — — — — — — $ 1,313,000 $ 1,440,000 $ 266,000 $ 3,513,000 $ 25,000 $ 1,447,000 $ (6,000) Substantially all interest income recognized on individually analyzed loans for all classes of financing receivables was recognized on a cash basis as received. A breakdown of individually analyzed loans by class of financing receivable as of and for the year ended December 31, 2022 is presented in the following table: Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 1,236,000 $ 1,532,000 $ — $ 1,440,000 $ 50,000 Construction 685,000 687,000 — 81,000 35,000 Other 301,000 348,000 — 408,000 13,000 Municipal — — — — — Residential Term 1,833,000 2,035,000 — 4,507,000 56,000 Construction — — — — — Home equity line of credit 304,000 340,000 — 295,000 — Consumer — — — 1,000 — $ 4,359,000 $ 4,942,000 $ — $ 6,732,000 $ 154,000 With an Allowance Recorded Commercial Real estate $ — $ — $ — $ 11,000 $ — Construction — — — 606,000 — Other 545,000 647,000 298,000 693,000 — Municipal — — — — — Residential Term 1,256,000 1,259,000 100,000 1,486,000 50,000 Construction — — — — — Home equity line of credit — — — 8,000 — Consumer — — — — — $ 1,801,000 $ 1,906,000 $ 398,000 $ 2,804,000 $ 50,000 Total Commercial Real estate $ 1,236,000 $ 1,532,000 $ — $ 1,451,000 $ 50,000 Construction 685,000 687,000 — 687,000 35,000 Other 846,000 995,000 298,000 1,101,000 13,000 Municipal — — — — — Residential Term 3,089,000 3,294,000 100,000 5,993,000 106,000 Construction — — — — — Home equity line of credit 304,000 340,000 — 303,000 — Consumer — — — 1,000 — $ 6,160,000 $ 6,848,000 $ 398,000 $ 9,536,000 $ 204,000 A breakdown of individually analyzed loans by class of financing receivable as of and for the period ended September 30, 2022 is presented in the following table: For the nine months ended September 30, 2022 For the quarter ended September 30, 2022 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 1,295,000 $ 1,607,000 $ — $ 1,497,000 $ 42,000 $ 1,314,000 $ 14,000 Construction 25,000 27,000 — 26,000 — 25,000 — Other 399,000 459,000 — 432,000 10,000 405,000 2,000 Municipal — — — — — — — Residential Term 1,912,000 2,139,000 — 5,380,000 40,000 4,666,000 (9,000) Construction — — — — — — — Home equity line of credit 247,000 279,000 — 299,000 — 249,000 — Consumer — — — 1,000 — — — $ 3,878,000 $ 4,511,000 $ — $ 7,635,000 $ 92,000 $ 6,659,000 $ 7,000 With an Allowance Recorded Commercial Real estate $ — $ — $ — $ 14,000 $ — $ — $ — Construction 661,000 661,000 6,000 661,000 27,000 661,000 16,000 Other 552,000 647,000 315,000 745,000 — 679,000 — Municipal — — — — — — — Residential Term 1,264,000 1,267,000 99,000 1,562,000 34,000 1,384,000 9,000 Construction — — — — — — — Home equity line of credit — — — 11,000 — — — Consumer — — — — — — — $ 2,477,000 $ 2,575,000 $ 420,000 $ 2,993,000 $ 61,000 $ 2,724,000 $ 25,000 Total Commercial Real estate $ 1,295,000 $ 1,607,000 $ — $ 1,511,000 $ 42,000 $ 1,314,000 $ 14,000 Construction 686,000 688,000 6,000 687,000 27,000 686,000 16,000 Other 951,000 1,106,000 315,000 1,177,000 10,000 1,084,000 2,000 Municipal — — — — — — — Residential Term 3,176,000 3,406,000 99,000 6,942,000 74,000 6,050,000 — Construction — — — — — — — Home equity line of credit 247,000 279,000 — 310,000 — 249,000 — Consumer — — — 1,000 — — — $ 6,355,000 $ 7,086,000 $ 420,000 $ 10,628,000 $ 153,000 $ 9,383,000 $ 32,000 Loan Modifications: ASU 2022-02 amends ASC 326 for entities that have adopted ASU 2016-13, the CECL standard, such as the Company. ASU 2022-02 eliminates the accounting guidance for TDRs and introduces new guidance for enhanced reporting of certain loan modifications to borrowers experiencing financial difficulty. Loan modifications may include interest rate reduction, term extension, payment deferral, principle forgiveness or a combination thereof. It is the intent to minimize future losses while providing borrowers with financial relief. The following table represents loan modifications made to borrowers experiencing financial difficulty by modification type and class of financing receivable, during the three months ended September 30, 2023: Payment Deferral Amortized Cost Basis at September 30, 2023 % of Total Class of Financing Receivable Commercial Real estate owner occupied $ 504,000 0.17 % C&I 19,000 0.01 % $ 523,000 0.03 % The following table describes the financial effect of the modifications made to borrowers experiencing financial difficulty for the three months ended September 30, 2023: Payment Deferral Financial Effect Commercial Real estate owner occupied Temporary payment accommodation, payments deferred to end of loan. C&I Temporary payment accommodation, payments deferred to end of loan. The Company monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified during the nine months ended September 30, 2023: Payment Status (Amortized Cost Basis) Current 30-59 Days 60-89 Days 90+ Days Commercial Real estate owner occupied $ 503,000 $ — $ — $ — C&I 220,000 40,000 — — Total $ 723,000 $ 40,000 $ — $ — Troubled Debt Restructured: Prior to adoption of ASU 2022-02, the Company evaluated loan modifications and other transactions to determine if classification as a TDR was necessary. A TDR constitutes a restructuring of debt if the Company, for economic or legal reasons related to the borrower's financial difficulties, grants a concession to the borrower that it would not otherwise consider. To determine whether or not a loan was to be classified as a TDR, Management evaluated a loan based upon the following criteria: • The borrower demonstrates financial difficulty; common indicators include past due status with bank obligations, substandard credit bureau reports, or an inability to refinance with another lender; and • The Company has granted a concession; common concession types include maturity date extension, interest rate adjustments to below market pricing, and deferment of payments. As of December 31, 2022, the company had 29 loans with a balance of $4,744,000 that were classified as TDRs. The impairment carried as a specific reserve in the allowance for loan losses is calculated by present valuing the expected cash flows on the loan at the original interest rate, or, for collateral-dependent loans, using the fair value of the collateral less costs to sell. The following table shows TDRs by class and the specific reserve as of December 31, 2022: Number of Loans Balance Specific Reserves Commercial Real estate 5 $ 1,044,000 $ — Construction 1 661,000 — Other 3 361,000 81,000 Municipal — — — Residential Term 20 2,678,000 100,000 Construction — — — Home equity line of credit — — — Consumer — — — 29 $ 4,744,000 $ 181,000 As of December 31, 2022, one of the loans classified as TDR with a total balance of $97,000 was more than 30 days past due and was not placed on TDR status in the previous 12 months. The following table shows past-due TDRs by class and the associated specific reserves included in the allowance for loan losses as of December 31, 2022: Number of Loans Balance Specific Reserves Commercial Real estate — $ — $ — Construction — — — Other 1 97,000 — Municipal — — — Residential Term — — — Construction — — — Home equity line of credit — — — Consumer — — — 1 $ 97,000 $ — For the year ended December 31, 2022, one loan was placed on TDR status. The following table shows this TDR by class and the associated specific reserves included in the allowance for loan losses as of December 31, 2022: Number of Loans Pre-Modification Post-Modification Outstanding Specific Reserves Commercial Real estate — $ — $ — $ — Construction — — — — Other — — — — Municipal — — — — Residential Term 1 38,000 38,000 — Construction — — — — Home equity line of credit — — — — Consumer — — — — 1 $ 38,000 $ 38,000 $ — As of December 31, 2022, Management was aware of four loans classified as TDRs that are involved in bankruptcy with an outstanding balance of $550,000. As of December 31, 2022, there were five loans with an outstanding balance of $339,000 that were classified as TDRs and were on non-accrual status, of which none were in the process of foreclosure. Residential Mortgage Loans in Process of Foreclosure As of September 30, 2023, there were four mortgage loans collateralized by residential real estate in the process of foreclosure with a total balance of $459,000. This compares to two mortgage loans collateralized by residential real estate in the process of foreclosure with a total balance of $166,000 as of December 31, 2022 and September 30, 2022.

Allowance for Credit Losses

Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses Upon adoption of ASC 326, in the first quarter of 2023, the Company replaced the incurred loss model that recognized losses when it became probable that a credit loss would be incurred, with a requirement to recognize lifetime expected credit losses immediately when a financial asset is originated or purchased. The ACL is a valuation amount that is deducted from the amortized cost basis of loans to present the net amount expected to be collected on the loans. Loans, or portions thereof, are charged off against the allowance when they are deemed uncollectible. The ACL consists of three elements: (1) specific reserves for loans individually analyzed; (2) general reserves for each portfolio segment; and, (3) qualitative reserves. All outstanding loans are considered in evaluating the appropriateness of the allowance. Loans are segmented by common risk characteristics as delineated in the paragraph below. Prior to adoption of ASC 326, under the incurred loss methodology, the Company evaluated portfolio risk characteristics largely on loan purpose. The Company provides for loan losses through the allowance for credit losses which represents an estimated reserve for losses in the loan portfolio. To determine an appropriate level for general reserves, a discounted cash flow approach is applied to each portfolio segment implementing a probability of default and loss given default estimate based upon a number of factors including historical losses over an economic cycle, economic forecasts, loan prepayment speeds and curtailment rates. To determine an appropriate level for qualitative reserves, various factors are considered including underwriting policies, credit administration practices, experience, ability and depth of lending management, and economic factors not captured in the general reserve calculation. Adoption of ASC 326 added $6,210,000 to the Allowance for Credit Losses, recorded as a charge to retained earnings at January 1, 2023. Loan Portfolio Composition & Risk Characteristics: The loan portfolio is segmented into ten classes and credit risk is evaluated separately in each class. Major risk characteristics relevant to each portfolio segment are as follows: Commercial Real Estate Owner Occupied - commercial real estate owner occupied loans consist of mortgage loans to finance investments in real property such as retail space, offices, industrial buildings, hotels, educational facilities, and other specific or mixed use properties. Loans are typically written with amortizing payment structures. Collateral values are determined based on appraisals and evaluations in accordance with established policy and regulatory guidelines. Loans typically have a loan-to-value ratio of up to 80% based upon current valuation information at the time the loan is made, and are primarily paid by the cash flow generated from the real property, typically the operating entity of owner occupant. Risk factors typically include competitive market forces, net operating incomes of the operating entity, and overall economic demand. Loans in the recreational and tourism sector can be affected by weather conditions, such as unseasonably low winter snowfalls. Commercial real estate lending also carries a higher degree of environmental risk than other types of lending. Commercial Real Estate Non-Owner Occupied - commercial real estate loans non-owner occupied share many of the purpose, loan structure and risk characteristics of owner-occupied commercial real estate. Repayment is generally reliant upon cash flow generated from tenants with risk factors also influenced by vacancy rates, cap rates, lease renewals, and underlying financial health of lessees. Commercial Construction - commercial construction loans consist of loans to finance construction in a mix of owner- and non-owner occupied commercial real estate properties. Loans typically have construction periods of less than two years, and payment structures during the construction period are typically on an interest only basis, although principal payments may be established depending on the type of construction project being financed. During the construction phase, commercial construction loans are primarily paid by cash flow generated from the construction project or other operating cash flows from the borrower or guarantors, if applicable. Commercial construction loans will typically convert to permanent financing from the Company, or loan repayment may come from a third party source in the event that the Company will not be providing permanent term financing. Collateral valuation and loan-to-value guidelines follow those for commercial real estate loans. Commercial construction loans are impacted by factors similar to those for commercial real estate loans in addition to risks related to contractor financial capacity and ability to complete a project within acceptable time frames and within budget. Commercial and Industry- C&I loans consist of revolving and term loan obligations extended to business and corporate enterprises for the purpose of financing working capital and or capital investment. C&I loans may be secured or unsecured; when secured, collateral generally consists of pledges of business assets including, but not limited to, accounts receivable, inventory, equipment, and/or other tangible and intangible assets. C&I loans are primarily paid by the operating cash flow of the borrower. A weakened economy, soft consumer spending, and the rising cost of labor or raw materials are examples of issues that can impact the credit quality in this segment. Commercial Multifamily - multifamily loans share structure and risk characteristics with non-owner occupied commercial real estate; underlying collateral is residential in nature rather than commercial, consisting of properties with five or more units. Municipal Loans - municipal loans are comprised of loans to municipalities in Maine for capitalized expenditures, construction projects, or tax anticipation notes. All municipal loans are considered either general obligations of the municipality collateralized by the taxing ability of the municipality for repayment of debt or have a pledge of specific revenues. The overall health of the economy, including unemployment rates and housing prices, has an impact on the credit quality of this segment. Residential Real Estate Term - residential term loans consist of residential real estate loans held in the Company's loan portfolio made to borrowers who demonstrate the ability to make scheduled payments with full consideration to underwriting factors. Borrower qualifications include favorable credit history combined with supportive income requirements and loan-to-value ratios within established policy and regulatory guidelines. Collateral values are determined based on appraisals and evaluations in accordance with established policy and regulatory guidelines. Residential loans typically have a loan-to-value ratio of up to 80% based on appraisal information at the time the loan is made. Collateral consists of mortgage liens on one-to four-family residential properties. Loans are offered with fixed or adjustable rates with amortization terms of up to thirty years. The overall health of the economy, including unemployment rates and housing prices, has an impact on the credit quality of this segment. Residential Real Estate Construction - residential construction loans typically consist of loans for the purpose of constructing single family residences to be owned and occupied by the borrower. Borrower qualifications include favorable credit history combined with supportive income requirements and loan-to-value ratios within established policy and regulatory guidelines. Residential construction loans normally have construction terms of one year or less and payment during the construction term is typically on an interest only basis from sources including interest reserves, borrower liquidity, and/or income. Residential construction loans will typically convert to permanent financing from the Company or have another financing commitment in place from an acceptable mortgage lender. Collateral valuation and loan-to-value guidelines are consistent with those for residential term loans. Residential construction loans are impacted by factors similar to those for residential real estate term loans in addition to risks related to contractor financial capacity and ability to complete a project within acceptable time frames and within budget. Home Equity Revolving and Term - home equity revolving and term loans are made to qualified individuals and are secured by senior or junior mortgage liens on owner occupied one- to four-family homes, condominiums, or vacation homes. The home equity line of credit typically has a variable interest rate and is billed as interest-only payments during the draw period. At the end of the draw period, the home equity line of credit is billed as a percentage of the principal balance plus all accrued interest. Loan maturities are normally 300 months. Borrower qualifications include favorable credit history combined with supportive income requirements and combined loan-to-value ratios usually not exceeding 80% inclusive of priority liens. Collateral valuation guidelines follow those for residential real estate loans. The overall health of the economy, including unemployment rates and housing prices, has an impact on the credit quality of this segment. Consumer - consumer loans include personal lines of credit and amortizing loans made to qualified individuals for various purposes such as autos, recreational vehicles, debt consolidation, personal expenses, or overdraft protection. Borrower qualifications include favorable credit history combined with supportive income and collateral requirements within established policy guidelines. Consumer loans may be secured or unsecured. The overall health of the economy, including unemployment rates, has an impact on the credit quality of this segment. Construction, land, and land development : CLLD loans, both commercial and residential, represented 37.3% of total Bank capital as of September 30, 2023 and remain below the regulatory guidance of 100.0% of total Bank capital. Construction loans and non-owner-occupied commercial real estate loans represented 215.5% of total Bank capital at September 30, 2023, below the regulatory guidance of 300.0% of total Bank capital. Composition of the ACL: A breakdown of the allowance for credit losses as of September 30, 2023, by class of financing receivable and allowance element, is presented in the following table: As of September 30, 2023 Specific Reserves on Loans Evaluated Individually General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Total Reserves Commercial Real estate owner occupied $ — $ 3,731,000 $ 780,000 $ 4,511,000 Real estate non-owner occupied — 3,855,000 574,000 4,429,000 Construction — 1,445,000 157,000 1,602,000 C&I 225,000 3,909,000 663,000 4,797,000 Multifamily — 1,184,000 93,000 1,277,000 Municipal — 332,000 44,000 376,000 Residential Term 41,000 4,020,000 825,000 4,886,000 Construction — 602,000 (26,000) 576,000 Home Equity Revolving and term — 442,000 175,000 617,000 Consumer — 219,000 32,000 251,000 $ 266,000 $ 19,739,000 $ 3,317,000 $ 23,322,000 A breakdown of the allowance for loan losses as of December 31, 2022 under the incurred loss method, by class of financing receivable and allowance element, is presented in the following table: As of December 31, 2022 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Total Reserves Commercial Real estate $ — $ 974,000 $ 5,142,000 $ — $ 6,116,000 Construction — 131,000 690,000 — 821,000 Other 298,000 446,000 2,353,000 — 3,097,000 Municipal — — 162,000 — 162,000 Residential Term 100,000 83,000 2,376,000 — 2,559,000 Construction — 7,000 192,000 — 199,000 Home equity line of credit — 101,000 928,000 — 1,029,000 Consumer — 286,000 776,000 — 1,062,000 Unallocated — — — 1,678,000 1,678,000 $ 398,000 $ 2,028,000 $ 12,619,000 $ 1,678,000 $ 16,723,000 A breakdown of the allowance for loan losses as of September 30, 2022 under the incurred loss method, by class of financing receivable and allowance element, is presented in the following table: As of September 30, 2022 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Total Reserves Commercial Real estate $ — $ 867,000 $ 4,708,000 $ — $ 5,575,000 Construction 6,000 173,000 942,000 — 1,121,000 Other 315,000 420,000 2,279,000 — 3,014,000 Municipal — — 160,000 — 160,000 Residential Term 99,000 102,000 2,346,000 — 2,547,000 Construction — 7,000 161,000 — 168,000 Home equity line of credit — 106,000 887,000 — 993,000 Consumer — 216,000 656,000 — 872,000 Unallocated — — — 1,937,000 1,937,000 $ 420,000 $ 1,891,000 $ 12,139,000 $ 1,937,000 $ 16,387,000 The allowance for credit losses as a percent of total loans stood at 1.12% as of September 30, 2023, 0.87% at December 31, 2022 and 0.88% as of September 30, 2022. Off-Balance Sheet Credit Exposures: In the ordinary course of business, the Company enters into commitments to extend credit, including commercial letters of credit and standby letters of credit. Such financial instruments are recorded as loans when they are funded . Allowance for Credit Losses on Off-Balance Sheet Credit Exposures: The Company estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company. The ACL on off-balance sheet credit exposures is adjusted through credit loss expense and any adjustment is recognized in net income. To appropriately measure expected credit losses, management disaggregates the loan portfolio into similar risk characteristics, identical to those determined for the loan portfolio. An estimated funding rate is then applied to the qualifying unfunded loan commitments and letters of credit using the Company’s own historical experience to estimate the expected funded amount for each loan segment as of the reporting date. Once the expected funded amount for each loan segment is determined, the loss rate, which is the calculated expected loan loss as a percent of the amortized cost basis for each loan segment, is applied to calculate the ACL on off-balance sheet credit exposures as of the reporting date. The Company’s allowance for credit losses on unfunded commitments is recognized as a liability, included within other liabilities on the consolidated balance sheet. The following table presents the activity in the ACL for off-balance sheet credit exposures for the nine months ended September 30, 2023 : Allowance for credit losses: Beginning balance, prior to adoption of ASC 326 $ 100,000 Impact of adopting ASC 326 1,297,000 Credit loss expense 89,000 Total ending allowance balance $ 1,486,000 Credit Quality Indicators: To monitor the credit quality of its loan portfolio, management applies an internal risk rating system to categorize commercial loan segments. Approximately 60% of commercial loan outstanding balances are subject to review and validation annually by an independent consulting firm. Additionally, commercial loan relationships with exposure greater than or equal to 750,000 are subject to review annually by the Company's internal credit review function. The risk rating system has eight levels, defined as follows: 1 Strong Credits rated "1" are characterized by borrowers fully responsible for the credit with excellent capacity to pay principal and interest. Loans rated "1" may be secured with acceptable forms of liquid collateral. 2 Above Average Credits rated "2" are characterized by borrowers that have better than average liquidity, capitalization, earnings, and/or cash flow with a consistent record of solid financial performance. 3 Satisfactory Credits rated "3" are characterized by borrowers with favorable liquidity, profitability, and financial condition with adequate cash flow to pay debt service. 4 Average Credits rated "4" are characterized by borrowers that present risk more than 1, 2 and 3 rated loans and merit an ordinary level of ongoing monitoring. Financial condition is on par or somewhat below industry averages while cash flow is generally adequate to meet debt service requirements. 5 Watch Credits rated "5" are characterized by borrowers that warrant greater monitoring due to financial condition or unresolved and identified risk factors. 6 Other Assets Especially Mentioned Loans in this category are currently protected but are potentially weak and constitute an undue and unwarranted credit risk, but not to the point of justifying a classification of substandard. OAEM have potential weaknesses which may, if not checked or corrected, weaken the asset or inadequately protect the Company's credit position at some future date. 7 Substandard Loans in this category are inadequately protected by the paying capacity of the borrower or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Substandard loans are characterized by the distinct possibility that the Company may sustain some loss if the deficiencies are not corrected. 8 Doubtful Loans classified "Doubtful" have the same weaknesses as those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, based on currently existing facts, conditions, and values, highly questionable and improbable. The possibility of loss is high, but because of certain important and reasonably specific pending factors which may work to the advantage and strengthening of the asset, its classification as an estimated loss is deferred until its more exact status may be determined. Most residential real estate, home equity, and consumer loans are not assigned ratings; therefore they are categorized as performing and non-performing loans. Performing loans include loans that are current and loans that are past due less than 90 days. Loans that are past due more than 90 days are considered non-performing. The following table summarizes the credit quality for the Company's portfolio by risk category of loans and by class by vintage as follows: Term Loans Amortized Cost Basis by Origination Year Dollars in thousands 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Commercial Real estate owner occupied Pass (risk rating 1-5) $ 43,022 $ 75,590 $ 41,851 $ 28,387 $ 35,696 $ 65,064 $ 9,355 $ 175 $ 299,140 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) 283 — — — 503 17 — — 803 Doubtful (risk rating 8) — — — — — — — — — Total Real Estate Owner Occupied 43,305 75,590 41,851 28,387 36,199 65,081 9,355 175 299,943 Current period gross write-offs — — — — — 40 — — 40 Real estate non-owner occupied Pass (risk rating 1-5) 27,875 71,474 130,132 49,160 27,670 85,559 5,092 — 396,962 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) — — — — — 62 — — 62 Doubtful (risk rating 8) — — — — — — — — — Total Real Estate Non-Owner Occupied 27,875 71,474 130,132 49,160 27,670 85,621 5,092 — 397,024 Current period gross write-offs — — — — — — — — — Construction Pass (risk rating 1-5) 16,892 41,852 8,506 1,665 1,039 2,470 — — 72,424 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) — — — — — — — — — Doubtful (risk rating 8) — — — — — — — — — Total Construction 16,892 41,852 8,506 1,665 1,039 2,470 — — 72,424 Current period gross write-offs — — — — — — — — — C&I Pass (risk rating 1-5) 43,648 66,873 53,712 37,052 6,526 38,003 90,748 11,937 348,499 Special Mention (risk rating 6) — 129 268 — — 8 400 — 805 Substandard (risk rating 7) 94 363 35 — 188 545 67 — 1,292 Doubtful (risk rating 8) — — — — — — — — — Total C&I 43,742 67,365 54,015 37,052 6,714 38,556 91,215 11,937 350,596 Current period gross write-offs — — — — 16 — — — 16 Multifamily Pass (risk rating 1-5) 8,435 32,082 18,172 16,103 5,553 8,796 329 207 89,677 Special Mention (risk rating 6) — — 1,364 — — — — — 1,364 Substandard (risk rating 7) — — — — — — — — — Doubtful (risk rating 8) — — — — — — — — — Total Multifamily 8,435 32,082 19,536 16,103 5,553 8,796 329 207 91,041 Current period gross write-offs — — — — — — — — — Municipal Pass (risk rating 1-5) 24,527 6,239 4,121 10,226 5,270 8,064 — — 58,447 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) — — — — — — — — — Doubtful (risk rating 8) — — — — — — — — — Total Municipal 24,527 6,239 4,121 10,226 5,270 8,064 — — 58,447 Current period gross write-offs — — — — — — — — — Term Loans Amortized Cost Basis by Origination Year Dollars in thousands 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Residential Term Performing 47,019 149,470 143,048 97,350 40,621 179,788 1,301 132 658,729 Non-performing — 304 — 81 340 595 — — 1,320 Total Term 47,019 149,774 143,048 97,431 40,961 180,383 1,301 132 660,049 Current period gross write-offs — — — — — — — — — Construction Performing 15,966 11,715 — 1,305 — — — — 28,986 Non-performing — — — — — — — — — Total Construction 15,966 11,715 — 1,305 — — — — 28,986 Current period gross write-offs — — — — — — — — — Home Equity Revolving and Term Performing 8,154 9,472 2,073 1,214 609 1,754 67,639 10,575 101,490 Non-performing — — — — — 115 198 177 490 Total Home Equity Revolving and Term 8,154 9,472 2,073 1,214 609 1,869 67,837 10,752 101,980 Current period gross write-offs — — — — — — — — — Consumer Performing 3,072 2,338 1,296 1,951 538 4,404 5,771 — 19,370 Non-performing — — — — — — — — — Total Consumer 3,072 2,338 1,296 1,951 538 4,404 5,771 — 19,370 Current period gross write-offs 5 41 30 30 7 39 — — 152 Total loans $ 238,987 $ 467,901 $ 404,578 $ 244,494 $ 124,553 $ 395,244 $ 180,900 $ 23,203 $ 2,079,860 Loss Recognition: Commercial loans are generally charged off when all or a portion of the principal amount is determined to be uncollectible. This determination is based on circumstances specific to a borrower including repayment ability, analysis of collateral, and other factors as applicable. Consumer loans greater than 120 days past due are generally charged off. Residential loans 90 days or more past due are placed on non-accrual status unless the loans are both well secured and in the process of collection. One- to four-family residential real estate loans and home equity loans are written down or charged-off no later than 180 days past due, or for residential real estate secured loans having a borrower in bankruptcy, within 60 days of receipt of notification of filing from the bankruptcy court, whichever is sooner. This is subject to completion of a current assessment of the value of the collateral with any outstanding loan balance in excess of the fair value of the property, less costs to sell, written down or charged-off. The following table presents allowance for credit losses activity by class for the nine months and quarter ended September 30, 2023: Dollars in thousands Commercial Municipal Residential Home Equity Consumer Unallocated Total Real Estate Owner Occupied Real Estate Non-Owner Occupied Construction C&I Multifamily Term Construction Revolving and term For the nine months ended September 30, 2023 Beginning balance, prior to adoption of ASC 326 $ 6,116 $ — $ 821 $ 3,097 $ — $ 162 $ 2,559 $ 199 $ 1,029 $ 1,062 $ 1,678 $ 16,723 Charge offs 40 — — 16 — — — — — 152 — 208 Recoveries 2 75 — 3 — — 10 — 10 78 — 178 Provision (credit) 119 39 (162) 68 93 82 439 (358) 34 65 — 419 Impact of adopting ASC 326 (1,686) 4,315 943 1,645 1,184 132 1,878 735 (456) (802) (1,678) 6,210 Ending balance $ 4,511 $ 4,429 $ 1,602 $ 4,797 $ 1,277 $ 376 $ 4,886 $ 576 $ 617 $ 251 $ — $ 23,322 For the three months ended September 30, 2023 Beginning balance $ 4,719 $ 4,492 $ 1,469 $ 4,721 $ 1,312 $ 399 $ 4,831 $ 609 $ 635 $ 278 $ — $ 23,465 Charge offs 1 — — 16 — — — — — 69 — 86 Recoveries 2 — — — — — 4 — 3 20 — 104 Provision (credit) (209) (63) 133 92 (35) (23) 51 (33) (21) 22 — (161) Ending balance $ 4,511 $ 4,429 $ 1,602 $ 4,797 $ 1,277 $ 376 $ 4,886 $ 576 $ 617 $ 251 $ — $ 23,322 As of September 30, 2023, the significant model inputs and assumptions used within the discounted cash flow model for purposes of estimating the ACL on loans were: Macroeconomic (loss) drivers : The following loss drivers for each loan segment were used to calculate the expected Probability of Default over the forecast and reversion period: • Commercial Real Estate Owner Occupied: FOMC median forecasts of national unemployment and change in national GDP • Commercial Real Estate Non-Owner Occupied: FOMC median forecasts of national unemployment and change in national GDP • Commercial Construction: FOMC median forecasts of national unemployment and change in national GDP • Commercial & Industrial: FOMC median forecasts of national unemployment and change in national GDP • Commercial Multifamily: FOMC median forecast of national unemployment and Case-Shiller National Home Price Index • Municipal: FOMC median forecasts of national unemployment and change in national GDP • Residential Real Estate Term: FOMC median forecasts of national unemployment and change in national GDP • Residential Real Estate Construction: FOMC median forecast of national unemployment • Home Equity Revolving & Term: FOMC median forecasts of national unemployment and change in national GDP • Consumer: FOMC median forecasts of national unemployment and change in national GDP Reasonable and supportable forecast period: The ACL on loans estimate used a reasonable and supportable forecast period of one year. Reversion period: The ACL on loans estimate used a reversion period of one year. Prepayment speeds: The estimate of prepayment speed for each loan segment was derived using internally sourced prepayment data. Qualitative factors: The ACL on loans estimate incorporated various qualitative factors into the calculation such as changes in lending policies, changes in the nature and volume and terms of loans, changes in the experience, depth and ability of lending management, and economic factors not captured in the quantitative model. The following table presents allowance for loan losses activity by class for the year ended December 31, 2022: Dollars in thousands Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the year ended December 31, 2022 Beginning balance $ 5,367 $ 746 $ 2,830 $ 157 $ 2,733 $ 148 $ 925 $ 833 $ 1,782 $ 15,521 Charge offs — — 309 — 8 — 29 412 — 758 Recoveries 20 — 13 — 29 — 4 144 — 210 Provision (credit) 729 75 563 5 (195) 51 129 497 (104) 1,750 Ending balance $ 6,116 $ 821 $ 3,097 $ 162 $ 2,559 $ 199 $ 1,029 $ 1,062 $ 1,678 $ 16,723 The following table presents allowance for loan losses activity by class for the nine months and quarter ended September 30, 2022: Dollars in thousands Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the nine months ended September 30, 2022 Beginning balance $ 5,367 $ 746 $ 2,830 $ 157 $ 2,733 $ 148 $ 925 $ 833 $ 1,782 $ 15,521 Charge offs — — 272 — — — 29 318 — 619 Recoveries 16 — 11 — 27 — 3 128 — 185 Provision (credit) 192 375 445 3 (213) 20 94 229 155 1,300 Ending balance $ 5,575 $ 1,121 $ 3,014 $ 160 $ 2,547 $ 168 $ 993 $ 872 $ 1,937 $ 16,387 For the three months ended September 30, 2022 Beginning balance $ 5,480 $ 1,151 $ 2,948 $ 157 $ 2,592 $ 191 $ 966 $ 866 $ 1,850 $ 16,201 Charge offs — — 229 — — — — 31 — 260 Recoveries (1) — 9 — 16 — 2 20 — 46 Provision (credit) 96 (30) 286 3 (61) (23) 25 17 87 400 Ending balance $ 5,575 $ 1,121 $ 3,014 $ 160 $ 2,547 $ 168 $ 993 $ 872 $ 1,937 $ 16,387

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation At the 2020 Annual Meeting, shareholders approved the 2020 Equity Incentive Plan. The 2020 Plan reserves 400,000 shares of common stock for issuance in connection with stock options, restricted stock awards, and other equity based awards to attract and retain the best available personnel, provide additional incentive to officers, employees, and non-employee Directors, and promote the success of the Company. Such grants and awards will be structured in a manner that does not encourage the recipients to expose the Company to undue or inappropriate risk. Options issued under the 2020 Plan qualify for treatment as incentive stock options for purposes of Section 422 of the Internal Revenue Code. Other compensation under the 2020 Plan qualifies as performance-based for purposes of Section 162(m) of the Internal Revenue Code, and satisfies NASDAQ guidelines relating to equity compensation. As of September 30, 2023, 98,810 shares of restricted stock had been granted under the 2020 Plan, of which 83,127 shares remain restricted as of September 30, 2023 as detailed in the following table: Year Vesting Term Shares Remaining Term 2021 3.0 25,968 0.3 2022 3.0 23,654 1.3 2022 2.5 1,250 1.3 2023 3.0 27,559 2.3 2023 2.0 2,946 1.3 2023 1.0 1,750 0.3 83,127 1.3 The compensation cost related to these non-vested restricted stock grants is $2,402,000 and is recognized over the vesting terms of each grant. In the nine months ended September 30, 2023, $607,000 of expense was recognized for these restricted shares, leaving $1,069,000 in unrecognized expense as of September 30, 2023. In the nine months ended September 30, 2022, $610,000 of expense was recognized for restricted shares, leaving $994,000 in unrecognized expense as of September 30, 2022.

Common Stock

Common Stock	9 Months Ended
	Sep. 30, 2023
Stockholders' Equity Note [Abstract]
Common Stock	Common StockProceeds from sale of common stock totaled $608,000 and $588,000 for the nine months ended September 30, 2023 and 2022, respectively.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table sets forth the computation of basic and diluted EPS for the nine months ended September 30, 2023 and 2022: Income (Numerator) Shares (Denominator) Per-Share Amount For the nine months ended September 30, 2023 Net income as reported $ 22,839,000 Basic EPS: Income available to common shareholders 22,839,000 10,993,406 $ 2.08 Effect of dilutive securities: restricted stock 84,089 Diluted EPS: Income available to common shareholders plus assumed conversions $ 22,839,000 11,077,495 $ 2.06 For the nine months ended September 30, 2022 Net income as reported $ 29,793,000 Basic EPS: Income available to common shareholders 29,793,000 10,927,920 $ 2.73 Effect of dilutive securities: restricted stock 98,651 Diluted EPS: Income available to common shareholders plus assumed conversions $ 29,793,000 11,026,571 $ 2.70 The following table sets forth the computation of basic and diluted EPS for the quarters ended September 30, 2023 and 2022: Income (Numerator) Shares (Denominator) Per-Share Amount For the quarter ended September 30, 2023 Net income as reported $ 7,474,000 Basic EPS: Income available to common shareholders 7,474,000 11,003,987 $ 0.68 Effect of dilutive securities: restricted stock 83,146 Diluted EPS: Income available to common shareholders plus assumed conversions $ 7,474,000 11,087,133 $ 0.67 For the quarter ended September 30, 2022 Net income as reported $ 10,091,000 Basic EPS: Income available to common shareholders 10,091,000 10,934,492 $ 0.92 Effect of dilutive securities: restricted stock 100,899 Diluted EPS: Income available to common shareholders plus assumed conversions $ 10,091,000 11,035,391 $ 0.91

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2023
Retirement Benefits, Description [Abstract]
Employee Benefit Plans	Employee Benefit Plans 401(k) Plan The Bank has a defined contribution plan available to substantially all employees who have completed three months of service. Employees may contribute up to IRS determined limits and the Bank may match employee contributions not to exceed 3.0% of compensation depending on contribution level. The Plan is a safe harbor plan whereby the Bank also contributes a minimum 3.0% of annual compensation to the plan for all eligible employees. The expense related to the 401(k) plan was $826,000 and $752,000 for the nine months ended September 30, 2023 and 2022, respectively. Deferred Compensation and Supplemental Retirement Benefits The Bank also provides unfunded supplemental retirement benefits for certain officers, payable in installments over 20 years upon retirement or death. The agreements consist of individual contracts with differing characteristics that, when taken together, do not constitute a postretirement plan. There are no active officers eligible for these benefits. The costs for these benefits are recognized over the service periods of the participating officers in accordance with FASB ASC Topic 712 "Compensation – Nonretirement Postemployment Benefits". The expense of these supplemental retirement benefits was $57,000 and $231,000 for the nine months ended September 30, 2023 and 2022, respectively. As of September 30, 2023, the associated accrued liability included in other liabilities in the balance sheet was $2,735,000 compared to $2,893,000 and $2,888,000 at December 31, 2022 and September 30, 2022, respectively. Postretirement Benefit Plans The Bank sponsors two postretirement benefit plans. One plan currently provides a subsidy for health insurance premiums to certain retired employees; these subsidies are based on years of service and range between $40 and $1,200 per month per person. The other plan provides life insurance coverage to certain retired employees and health insurance for retired directors. None of these plans are prefunded. The Company utilizes FASB ASC Topic 712 to recognize the overfunded or underfunded status of a defined benefit postretirement plan as an asset or liability in its balance sheet and to recognize changes in the funded status in the year in which the changes occur through comprehensive income (loss). The following table sets forth the accumulated postretirement benefit obligation and funded status: At or for the nine months ended September 30, 2023 2022 Change in benefit obligation Benefit obligation at beginning of year $ 1,050,000 $ 1,353,000 Interest cost 14,000 24,000 Benefits paid (66,000) (66,000) Benefit obligation at end of period $ 998,000 $ 1,311,000 Funded status Benefit obligation at end of period $ (998,000) $ (1,311,000) Unamortized gain (345,000) (133,000) Accrued benefit cost at end of period $ (1,343,000) $ (1,444,000) The following table sets forth the net periodic pension cost: For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Components of net periodic benefit cost Interest cost $ 14,000 $ 24,000 $ 4,000 $ 7,000 Net periodic benefit cost $ 14,000 $ 24,000 $ 4,000 $ 7,000 Amounts not yet reflected in net periodic benefit cost and included in AOCI are as follows: September 30, 2023 December 31, 2022 September 30, 2022 Unamortized net actuarial gain $ 345,000 $ 345,000 $ 133,000 Deferred tax expense (72,000) (72,000) (28,000) Net unrecognized postretirement benefits included in AOCI $ 273,000 $ 273,000 $ 105,000 A weighted average discount rate of 4.75% was used in determining the accumulated benefit obligation and the net periodic benefit cost. The assumed health care cost trend rate is 7.00%. The measurement date for benefit obligations was as of year-end for prior years presented. The expected benefit payments for all of 2023 are $88,000. Plan expense for 2023 is estimated to be $19,000. A 1.00% change in trend assumptions would create an approximate change in the same direction of $100,000 in the accumulated benefit obligation, $7,000 in the interest cost, and $1,000 in the service cost.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The following table summarizes activity in the unrealized gain or loss on available for sale securities included in OCI for the nine months and quarters ended September 30, 2023 and 2022. For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Balance at beginning of period $ (44,718,000) $ (1,718,000) $ (43,781,000) $ (32,795,000) Unrealized losses arising during the period (11,562,000) (58,149,000) (12,748,000) (18,812,000) Reclassification of net realized gains during the period — (7,000) — (6,000) Related deferred taxes 2,428,000 12,213,000 2,677,000 3,952,000 Net change (9,134,000) (45,943,000) (10,071,000) (14,866,000) Balance at end of period $ (53,852,000) $ (47,661,000) $ (53,852,000) $ (47,661,000) The reclassification of realized gains is included in the net securities gains line of the consolidated statements of income and comprehensive income and the tax effect is included in the income tax expense line of the same statement. The following table summarizes activity in the unrealized loss on securities transferred from available for sale to held to maturity included in OCI for the nine months and quarters ended September 30, 2023 and 2022. For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Balance at beginning of period $ (64,000) $ (87,000) $ (59,000) $ (73,000) Amortization of net unrealized gains 7,000 25,000 1,000 7,000 Related deferred taxes (1,000) (5,000) — (1,000) Net change 6,000 20,000 1,000 6,000 Balance at end of period $ (58,000) $ (67,000) $ (58,000) $ (67,000) The following table presents the effect of the Company's derivative financial instruments included in OCI for the nine months and quarters ended September 30, 2023 and 2022. For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Balance at beginning of period $ 544,000 $ — $ 680,000 $ 146,000 Unrealized gains on cash flow hedging derivatives arising during the period 1,096,000 633,000 924,000 448,000 Related deferred taxes (230,000) (133,000) (194,000) (94,000) Net change 866,000 500,000 730,000 354,000 Balance at end of period $ 1,410,000 $ 500,000 $ 1,410,000 $ 500,000

Financial Derivative Instrument

Financial Derivative Instruments	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivative Instruments	Financial Derivative Instruments The Bank uses derivative financial instruments for risk management purposes and not for trading or speculative purposes. As part of its overall asset and liability management strategy, the Bank periodically uses derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. The Bank’s interest rate risk management strategy involves modifying the re-pricing characteristics of certain assets or liabilities so that changes in interest rates do not have a significant effect on net interest income. The Bank recognizes its derivative instruments in the consolidated balance sheets at fair value. On the date the derivative instrument is entered into, the Bank designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Bank formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Bank also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used in hedging transactions are highly effective in offsetting the changes in cash flows or fair values of hedged items. Changes in fair value of derivative instruments that are highly effective and qualify as cash flow hedges are recorded in OCI. Any ineffective portion is recorded in earnings. The Bank discontinues hedge accounting when it is determined that the derivative is no longer highly effective in offsetting changes of the hedged risk on the hedged item, or management determines that the designation of the derivative as a hedging instrument is no longer appropriate. The details of the Bank's swap agreements are as follows: September 30, 2023 December 31, 2022 September 30, 2022 Effective Date Maturity Date Variable Index Received Fixed Rate Paid Presentation on Consolidated Balance Sheets Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Cash Flow Hedges 04/27/2022 10/27/2023 USD-SOFR-COMPOUND 2.498% Other Assets $ 10,000,000 $ 20,000 $ 10,000,000 $ 187,000 $ 10,000,000 $ 179,000 04/27/2022 01/27/2024 USD-SOFR-COMPOUND 2.576% Other Assets 10,000,000 92,000 10,000,000 233,000 10,000,000 212,000 04/27/2022 04/27/2024 USD-SOFR-COMPOUND 2.619% Other Assets 10,000,000 159,000 10,000,000 269,000 10,000,000 242,000 01/10/2023 01/01/2026 USD-SOFR-OIS COMPOUND 3.836% Other Assets 75,000,000 1,513,000 — — — — $ 105,000,000 $ 1,784,000 $ 30,000,000 $ 689,000 $ 30,000,000 $ 633,000 Fair Value Hedges 03/08/2023 03/01/2026 USD-SOFR-OIS COMPOUND 4.712% Other Assets $ 40,000,000 $ 63,000 $ — $ — $ — $ — 03/08/2023 03/01/2027 USD-SOFR-OIS COMPOUND 4.402% Other Assets 30,000,000 120,000 — — — — 03/08/2023 03/01/2028 USD-SOFR-OIS COMPOUND 4.189% Other Assets 30,000,000 250,000 — — — — 07/12/2023 08/01/2025 USD-SOFR-OIS COMPOUND 4.703% Other Assets 50,000,000 272,000 — — — — $ 150,000,000 $ 705,000 $ — $ — $ — $ — Total swap agreements $ 255,000,000 $ 2,489,000 $ 30,000,000 $ 689,000 $ 30,000,000 $ 633,000 The Company would reclassify unrealized gains or losses accounted for within AOCI into earnings if the interest rate swaps were to become ineffective or the swaps were to terminate for cash flow hedges, or would amortize the gain or loss over the remaining life of the hedged instrument for fair value hedges. Amounts paid or received under the swaps are reported in interest income or interest expense in the consolidated statements of income, and reflected in net income in the consolidated statements of cash flows. Customer loan derivatives The Bank will enter into interest rate swaps with qualified commercial customers. Through these arrangements, the Bank is able to provide a means for a loan customer to obtain a long-term fixed rate, while it simultaneously contracts with an approved, highly-rated, third-party financial institution as counterparty to swap the fixed rate for a variable rate. Such loan level arrangements are not designated as hedges for accounting purposes, and are recorded at fair value in the Company’s consolidated balance sheets. At September 30, 2023 and 2022, and December 31, 2022, there were six customer loan swap arrangements in place, detailed below: September 30, 2023 December 31, 2022 September 30, 2022 Presentation on Consolidated Balance Sheet Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Pay Fixed, Receive Variable Other Assets 6 $ 36,572,000 $ 6,031,000 6 $ 37,411,000 $ 4,910,000 6 $ 38,628,000 $ 5,365,000 6 36,572,000 6,031,000 6 37,411,000 4,910,000 6 38,628,000 5,365,000 Receive Fixed, Pay Variable Other Liabilities 6 36,572,000 (6,031,000) 6 37,411,000 (4,910,000) 6 38,628,000 (5,365,000) 6 36,572,000 (6,031,000) 6 37,411,000 (4,910,000) 6 38,628,000 (5,365,000) Total 12 $ 73,144,000 $ — 12 $ 74,822,000 $ — 12 $ 77,256,000 $ — Derivative collateral The Bank has entered into a master netting arrangement with its counterparty and settles payments with the counterparty as necessary. The Bank's arrangement with its institutional counterparty requires it to post cash or other assets as collateral for its various loan swap contracts in a net liability position based on their fair values and the Bank's credit rating or receive cash collateral for contracts in a net asset position as requested. At September 30, 2023, there was no collateral posted on its swap contracts or required amount to be pledged. Cessation of LIBOR The Company adopted SOFR as its replacement reference rate index for each of the customer loan interest rate swap contracts that were tied to a LIBOR tenor. The six contracts shown in the table immediately above have maturity dates of December 19, 2029, August 21, 2030, April 1, 2031, July 1, 2035, October 1, 2035 and October 1, 2039. The necessary actions to amend these legacy contracts to incorporate the new replacement reference rate index were completed in the second quarter 2023.

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2023
Transfers and Servicing [Abstract]
Mortgage Servicing Rights	Mortgage Servicing Rights FASB ASC Topic 860 "Transfers and Servicing", requires all separately recognized servicing assets and servicing liabilities to be initially measured at fair value, if practicable. The Company's servicing assets and servicing liabilities are reported using the amortization method and carried at the lower of amortized cost or fair value by strata. In evaluating the carrying values of mortgage servicing rights, the Company obtains third party valuations based on loan level data including note rate, type, and term of the underlying loans. The model utilizes several assumptions, the most significant of which is loan prepayments, calculated using a three-months moving average of weekly prepayment data published by the PSA and modeled against the serviced loan portfolio, and the discount rate to discount future cash flows. As of September 30, 2023, the prepayment assumption using the PSA model was 93, which translates into an anticipated prepayment rate of 4.46%. The discount rate is 10.00%. Other assumptions include delinquency rates, foreclosure rates, servicing cost inflation, and annual unit loan cost. All assumptions are adjusted periodically to reflect current circumstances. Amortization of mortgage servicing rights, as well as write-offs due to prepayments of the related mortgage loans, are recorded as a charge against mortgage servicing fee income. For the nine months ended September 30, 2023 and 2022, servicing rights capitalized totaled $34,000 and $299,000, respectively. Servicing rights amortized for the nine-month periods ended September 30, 2023 and 2022 were $280,000 and $402,000, respectively. The fair value of servicing rights was $3,673,000, $3,734,000, and $3,789,000 at September 30, 2023, December 31, 2022 and September 30, 2022, respectively. The Bank serviced loans for others totaling $327,428,000, $342,870,000, and $348,589,000 at September 30, 2023, December 31, 2022, and September 30, 2022, respectively. Mortgage servicing rights are included in other assets and detailed in the following table: September 30, 2023 December 31, 2022 September 30, 2022 Mortgage servicing rights $ 8,687,000 $ 8,654,000 $ 8,640,000 Accumulated amortization (6,441,000) (6,161,000) (6,046,000) Carrying value $ 2,246,000 $ 2,493,000 $ 2,594,000

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesFASB ASC Topic 740 "Income Taxes" defines the criteria that an individual tax position must satisfy for some or all of the benefits of that position to be recognized in a company's financial statements. Topic 740 prescribes a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken or expected to be taken on a tax return, in order for those tax positions to be recognized in the financial statements. The Company is currently open to audit under the statute of limitations by the IRS for the years ended December 31, 2019 through 2022.

Certificates of Deposit

Certificates of Deposit	9 Months Ended
	Sep. 30, 2023
Deposits [Abstract]
Certificates of Deposit	Certificates of Deposit The following table represents the breakdown of certificates of deposit at September 30, 2023 and 2022, and at December 31, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Certificates of deposit < $100,000 $ 641,429,000 $ 489,793,000 $ 407,344,000 Certificates $100,000 to $250,000 234,962,000 259,614,000 295,112,000 Certificates $250,000 and over 132,775,000 118,264,000 83,720,000 $ 1,009,166,000 $ 867,671,000 $ 786,176,000

Reclassifications

Reclassifications	9 Months Ended
	Sep. 30, 2023
Prior Period Adjustment [Abstract]
Reclassifications	ReclassificationsCertain items from the prior year were reclassified in the consolidated financial statements to conform with the current year presentation. These do not have a material impact on the consolidated balance sheet or statement of income and comprehensive income presentations.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Certain assets and liabilities are recorded at fair value to provide additional insight into the Company's quality of earnings. Some of these assets and liabilities are measured on a recurring basis while others are measured on a nonrecurring basis, with the determination based upon applicable existing accounting pronouncements. For example, securities available for sale are recorded at fair value on a recurring basis. Other assets, such as other real estate owned and individually analyzed loans, are recorded at fair value on a nonrecurring basis using the lower of cost or market methodology to determine impairment of individual assets. The Company groups assets and liabilities, which are recorded at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. A financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement (with level 1 considered highest and level 3 considered lowest). A brief description of each level follows: Level 1 - Valuation is based upon quoted prices for identical instruments in active markets. Level 2 - Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 - Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation includes use of discounted cash flow models and similar techniques. The fair value methods and assumptions for the Company's financial instruments and other assets measured at fair value are set forth below. Investment Securities The fair values of investment securities are estimated by independent providers using a market approach with observable inputs, including matrix pricing and recent transactions. In obtaining such valuation information from third parties, the Company has evaluated their valuation methodologies used to develop the fair values in order to determine whether the valuations are representative of an exit price in the Company's principal markets. The Company's principal markets for its securities portfolios are the secondary institutional markets, with an exit price that is predominantly reflective of bid level pricing in those markets. Fair values are calculated based on the value of one unit without regard to any premium or discount that may result from concentrations of ownership of a financial instrument, possible tax ramifications, or estimated transaction costs. If these considerations had been incorporated into the fair value estimates, the aggregate fair value could have been changed. The carrying values of restricted equity securities approximate fair values. As such, the Company classifies investment securities as Level 2. Loans Fair values are estimated for portfolios of loans are based on an exit pricing notion. The fair values of performing loans are calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest risk inherent in the loan. The estimates of maturity are based on the Company's historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions, and the effects of estimated prepayments. Assumptions regarding credit risk, cash flows, and discount rates are judgmentally determined using available market information and specific borrower information. Management has made estimates of fair value using discount rates that it believes to be reasonable. However, because there is no market for many of these financial instruments, Management has no basis to determine whether the fair value presented above would be indicative of the value negotiated in an actual sale. As such, the Company classifies loans as Level 3, except for certain individually analyzed loans. Fair values of individually analyzed loans are based on estimated cash flows and are discounted using a rate commensurate with the risk associated with the estimated cash flows, or if collateral dependent, discounted to the appraised value of the collateral as determined by reference to sale prices of similar properties, less costs to sell. As such, the Company classifies individually analyzed loans for which a specific reserve results in a fair value measure as Level 2. All other individually analyzed loans are classified as Level 3. Other Real Estate Owned Real estate acquired through foreclosure is initially recorded at fair value. The fair value of other real estate owned is based on property appraisals and an analysis of similar properties currently available. As such, the Company records other real estate owned as nonrecurring Level 2. Mortgage Servicing Rights Mortgage servicing rights represent the value associated with servicing residential mortgage loans. Servicing assets and servicing liabilities are reported using the amortization method and compared to fair value for impairment. In evaluating the fair values of mortgage servicing rights, the Company obtains third party valuations based on loan level data including note rate, type, and term of the underlying loans. As such, the Company classifies mortgage servicing rights as Level 2. Time Deposits The fair value of maturity deposits is based on the discounted value of contractual cash flows using a replacement cost of funds approach. The discount rate is estimated using the cost of funds borrowing rate in the market. As such, the Company classifies time deposits as Level 2. Borrowed Funds The fair value of borrowed funds is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently available for borrowings of similar remaining maturities. As such, the Company classifies borrowed funds as Level 2. Derivatives The fair value of interest rate swaps is determined using inputs that are observable in the market place obtained from third parties including yield curves, publicly available volatilities, and floating indexes and, accordingly, are classified as Level 2 inputs. The credit value adjustments associated with derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. As of September 30, 2023 and 2022, and December 31, 2022, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives due to collateral postings. Customer Loan Derivatives The valuation of the Company’s customer loan derivatives is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of master netting arrangements and any applicable credit enhancements, such as collateral postings. Limitations Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These values do not reflect any premium or discount that could result from offering for sale at one time the Company's entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company's financial instruments, fair value estimates are based on Management's judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial instruments include the deferred tax asset, premises and equipment, and other real estate owned. In addition, tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of the estimates. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The following tables present the balances of assets and liabilities that were measured at fair value on a recurring basis as of September 30, 2023, December 31, 2022 and September 30, 2022. At September 30, 2023 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 38,252,000 $ — $ 38,252,000 Mortgage-backed securities — 212,846,000 — 212,846,000 State and political subdivisions — 30,780,000 — 30,780,000 Asset-backed securities — 3,094,000 — 3,094,000 Total securities available for sale — 284,972,000 — 284,972,000 Interest rate swap agreements — 2,489,000 — 2,489,000 Customer loan interest swap agreements — 6,031,000 — 6,031,000 Total interest rate swap agreements — 8,520,000 — 8,520,000 Total assets $ — $ 293,492,000 $ — $ 293,492,000 At September 30, 2023 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ — $ — $ — Customer loan interest swap agreements — 6,031,000 — 6,031,000 Total liabilities $ — $ 6,031,000 $ — $ 6,031,000 At December 31, 2022 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 19,147,000 $ — $ 19,147,000 Mortgage-backed securities — 228,676,000 — 228,676,000 State and political subdivisions — 33,191,000 — 33,191,000 Asset-backed securities — 3,495,000 — 3,495,000 Total securities available for sale — 284,509,000 — 284,509,000 Interest rate swap agreements — 689,000 — 689,000 Customer loan interest swap agreements — 4,910,000 — 4,910,000 Total interest rate swap agreements — 5,599,000 — 5,599,000 Total assets $ — $ 290,108,000 $ — $ 290,108,000 At December 31, 2022 Level 1 Level 2 Level 3 Total Customer loan interest swap agreements $ — $ 4,910,000 $ — $ 4,910,000 Total liabilities $ — $ 4,910,000 $ — $ 4,910,000 At September 30, 2022 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 19,144,000 $ — $ 19,144,000 Mortgage-backed securities — 229,178,000 — 229,178,000 State and political subdivisions — 31,106,000 — 31,106,000 Asset-backed securities — 3,840,000 — 3,840,000 Total securities available for sale — 283,268,000 — 283,268,000 Interest rate swap agreements — 633,000 — 633,000 Customer loan interest swap agreements — 5,365,000 — 5,365,000 Total interest swap agreements — 5,998,000 — 5,998,000 Total assets $ — $ 289,266,000 $ — $ 289,266,000 At September 30, 2022 Level 1 Level 2 Level 3 Total Customer loan interest swap agreements $ — $ 5,365,000 $ — $ 5,365,000 Total liabilities $ — $ 5,365,000 $ — $ 5,365,000 Assets Recorded at Fair Value on a Non-Recurring Basis The following tables include assets measured at fair value on a nonrecurring basis that have had a fair value adjustment since their initial recognition. Mortgage servicing rights are presented at fair value with no impairment reserve for each of the periods presented. Only collateral-dependent individually analyzed loans with a related specific allowance for credit losses or a partial charge off are included in individually analyzed loans for purposes of fair value disclosures. Individually analyzed loans below are presented net of specific allowances of $19,000, $135,000 and $151,000 at September 30, 2023, December 31, 2022, and September 30, 2022, respectively. At September 30, 2023 Level 1 Level 2 Level 3 Total Mortgage servicing rights $ — $ 3,673,000 $ — $ 3,673,000 Individually analyzed loans — 285,000 — 285,000 Total assets $ — $ 3,958,000 $ — $ 3,958,000 At December 31, 2022 Level 1 Level 2 Level 3 Total Mortgage servicing rights $ — $ 3,734,000 $ — $ 3,734,000 Individually analyzed loans — 20,000 — 20,000 Total assets $ — $ 3,754,000 $ — $ 3,754,000 At September 30, 2022 Level 1 Level 2 Level 3 Total Mortgage servicing rights $ — $ 3,789,000 $ — $ 3,789,000 Individually analyzed loans — 5,000 — 5,000 Total assets $ — $ 3,794,000 $ — $ 3,794,000 Fair Value of Financial Instruments FASB ASC Topic 825 "Financial Instruments" requires disclosures of fair value information about financial instruments, whether or not recognized in the balance sheet if the fair values can be reasonably determined. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company's various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques using observable inputs when available. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. Topic 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. This summary excludes financial assets and liabilities for which carrying value approximates fair values and financial instruments that are recorded at fair value on a recurring basis. Financial instruments for which carrying values approximate fair value include cash equivalents, interest-bearing deposits in other banks, demand, NOW, savings, and money market deposits. The estimated fair value of demand, NOW, savings, and money market deposits is the amount payable on demand at the reporting date. Carrying value is used because the accounts have no stated maturity and the customer has the ability to withdraw funds immediately. The carrying amount and estimated fair values for financial instruments as of September 30, 2023 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity (net of allowance for credit losses) $ 387,374,000 $ 311,864,000 $ — $ 311,864,000 $ — Loans (net of allowance for credit losses) Commercial Real estate 688,027,000 652,297,000 — — 652,297,000 Construction 70,822,000 67,144,000 — — 67,144,000 Other 435,563,000 423,464,000 — — 423,464,000 Municipal 58,071,000 52,196,000 — — 52,196,000 Residential Term 655,431,000 577,982,000 — 285,000 577,697,000 Construction 28,410,000 27,972,000 — — 27,972,000 Home equity line of credit 101,363,000 102,124,000 — — 102,124,000 Consumer 19,119,000 16,978,000 — — 16,978,000 Total loans 2,056,806,000 1,920,157,000 — 285,000 1,919,872,000 Mortgage servicing rights 2,246,000 3,673,000 — 3,673,000 — Financial liabilities Local certificates of deposit $ 338,280,000 $ 319,218,000 $ — $ 319,218,000 $ — National certificates of deposit 670,886,000 672,654,000 — 672,654,000 — Total certificates of deposit 1,009,166,000 991,872,000 — 991,872,000 — Repurchase agreements 52,915,000 52,793,000 — 52,793,000 — Federal Home Loan Bank advances 30,078,000 30,074,000 — 30,074,000 — Total borrowed funds 82,993,000 82,867,000 — 82,867,000 — The carrying amounts and estimated fair values for financial instruments as of December 31, 2022 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 393,896,000 $ 339,011,000 $ — $ 339,011,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 692,541,000 669,752,000 — — 669,752,000 Construction 92,994,000 89,934,000 — — 89,934,000 Other 315,917,000 312,219,000 — 20,000 312,199,000 Municipal 40,439,000 38,069,000 — — 38,069,000 Residential Term 611,350,000 558,274,000 — — 558,274,000 Construction 49,686,000 44,410,000 — — 44,410,000 Home equity line of credit 75,416,000 78,878,000 — — 78,878,000 Consumer 19,883,000 18,142,000 — — 18,142,000 Total loans 1,898,226,000 1,809,678,000 — 20,000 1,809,658,000 Mortgage servicing rights 2,493,000 3,734,000 — 3,734,000 — Financial liabilities Local certificates of deposit $ 291,152,000 $ 275,658,000 $ — $ 275,658,000 $ — National certificates of deposit 576,519,000 569,883,000 — 569,883,000 — Total certificates of deposit 867,671,000 845,541,000 — 845,541,000 — Repurchase agreements 64,409,000 64,289,000 — 64,289,000 — Federal Home Loan Bank advances 39,074,000 39,064,000 — 39,064,000 — Total borrowed funds 103,483,000 103,353,000 — 103,353,000 — The carrying amount and estimated fair values for financial instruments as of September 30, 2022 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 381,906,000 $ 313,796,000 $ — $ 313,796,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 632,385,000 615,560,000 — — 615,560,000 Construction 127,765,000 124,366,000 — — 124,366,000 Other 306,692,000 304,024,000 — 5,000 304,019,000 Municipal 48,521,000 46,475,000 — — 46,475,000 Residential Term 592,143,000 543,378,000 — — 543,378,000 Construction 41,440,000 37,263,000 — — 37,263,000 Home equity line of credit 72,812,000 76,287,000 — — 76,287,000 Consumer 19,830,000 18,172,000 — — 18,172,000 Total loans 1,841,588,000 1,765,525,000 — 5,000 1,765,520,000 Mortgage servicing rights 2,594,000 3,789,000 — 3,789,000 — Financial liabilities Local certificates of deposit $ 252,211,000 $ 239,377,000 $ — $ 239,377,000 $ — National certificates of deposit 533,965,000 525,169,000 — 525,169,000 — Total certificates of deposit 786,176,000 764,546,000 — 764,546,000 — Repurchase agreements 68,258,000 59,208,000 — 59,208,000 — Federal Home Loan Bank advances 50,085,000 50,071,000 — 50,071,000 — Total borrowed funds 118,343,000 109,279,000 — 109,279,000 —

Impact of Recently Issued Accou

Impact of Recently Issued Accounting Standards	9 Months Ended
	Sep. 30, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards Adoption of New Accounting Standards: On January 1, 2023, the Company adopted ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as amended, which replaces the incurred loss methodology with an expected loss methodology that is referred to as the CECL methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as loans, such as loan commitments, standby letters of credit, certain lines of credit. In addition, ASC 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities management does not intend to sell or believes that it is more likely than not they will be required to sell. The Company adopted ASC 326 using the modified retrospective method for all financial assets, measured at amortized cost, and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2023 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. On adoption, the Company recognized an increase in the allowance for credit losses on held to maturity securities of $438,000, an increase to the allowance for credit losses on loans of $6,210,000, and an increase to the reserve for off-balance sheet commitments of $1,297,000. The net, after-tax impact of the increases of the allowances for credit losses and reserve for off-balance sheet commitments was a net decrease to retained earnings of $6,277,000 shown in the Consolidated Statements of Changes in Stockholders Equity. Additional details can be found in Notes 3 and 4. In March 2023, the FASB issued ASU No. 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. This ASU expands the use of proportional amortization method of accounting — currently allowed only for investments in low-income housing tax credit (LIHTC) structures — to equity investments in other tax credit structures that meet certain criteria. The proportional amortization method results in (1) the tax credit investment being amortized in proportion to the allocation of tax credits and other tax benefits in each period and (2) net presentation within the income tax line item. The ASU is effective beginning in 2024 for calendar year-end public business entities. Adoption is not expected to have a material impact on the Company's consolidated financial statements.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of PresentationThe Company is a financial holding company that owns all of the common stock of the Bank. The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of Management, all adjustments (consisting of normally recurring accruals) considered necessary for a fair presentation have been included. All significant intercompany transactions and balances are eliminated in consolidation. The income reported for the 2023 period is not necessarily indicative of the results that may be expected for the year ending December 31, 2023.
Financial Derivative Instruments	Financial Derivative Instruments The Bank uses derivative financial instruments for risk management purposes and not for trading or speculative purposes. As part of its overall asset and liability management strategy, the Bank periodically uses derivative instruments to minimize significant unplanned fluctuations in earnings and cash flows caused by interest rate volatility. The Bank’s interest rate risk management strategy involves modifying the re-pricing characteristics of certain assets or liabilities so that changes in interest rates do not have a significant effect on net interest income. The Bank recognizes its derivative instruments in the consolidated balance sheets at fair value. On the date the derivative instrument is entered into, the Bank designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Bank formally documents relationships between hedging instruments and hedged items, as well as its risk
Reclassifications	ReclassificationsCertain items from the prior year were reclassified in the consolidated financial statements to conform with the current year presentation. These do not have a material impact on the consolidated balance sheet or statement of income and comprehensive income presentations.
Fair Value	Certain assets and liabilities are recorded at fair value to provide additional insight into the Company's quality of earnings. Some of these assets and liabilities are measured on a recurring basis while others are measured on a nonrecurring basis, with the determination based upon applicable existing accounting pronouncements. For example, securities available for sale are recorded at fair value on a recurring basis. Other assets, such as other real estate owned and individually analyzed loans, are recorded at fair value on a nonrecurring basis using the lower of cost or market methodology to determine impairment of individual assets. The Company groups assets and liabilities, which are recorded at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. A financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement (with level 1 considered highest and level 3 considered lowest). A brief description of each level follows: Level 1 - Valuation is based upon quoted prices for identical instruments in active markets. Level 2 - Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 - Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation includes use of discounted cash flow models and similar techniques.
Fair Value of Financial Instruments	The fair value methods and assumptions for the Company's financial instruments and other assets measured at fair value are set forth below. Investment Securities The fair values of investment securities are estimated by independent providers using a market approach with observable inputs, including matrix pricing and recent transactions. In obtaining such valuation information from third parties, the Company has evaluated their valuation methodologies used to develop the fair values in order to determine whether the valuations are representative of an exit price in the Company's principal markets. The Company's principal markets for its securities portfolios are the secondary institutional markets, with an exit price that is predominantly reflective of bid level pricing in those markets. Fair values are calculated based on the value of one unit without regard to any premium or discount that may result from concentrations of ownership of a financial instrument, possible tax ramifications, or estimated transaction costs. If these considerations had been incorporated into the fair value estimates, the aggregate fair value could have been changed. The carrying values of restricted equity securities approximate fair values. As such, the Company classifies investment securities as Level 2. Loans Fair values are estimated for portfolios of loans are based on an exit pricing notion. The fair values of performing loans are calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest risk inherent in the loan. The estimates of maturity are based on the Company's historical experience with repayments for each loan classification, modified, as required, by an estimate of the effect of current economic and lending conditions, and the effects of estimated prepayments. Assumptions regarding credit risk, cash flows, and discount rates are judgmentally determined using available market information and specific borrower information. Management has made estimates of fair value using discount rates that it believes to be reasonable. However, because there is no market for many of these financial instruments, Management has no basis to determine whether the fair value presented above would be indicative of the value negotiated in an actual sale. As such, the Company classifies loans as Level 3, except for certain individually analyzed loans. Fair values of individually analyzed loans are based on estimated cash flows and are discounted using a rate commensurate with the risk associated with the estimated cash flows, or if collateral dependent, discounted to the appraised value of the collateral as determined by reference to sale prices of similar properties, less costs to sell. As such, the Company classifies individually analyzed loans for which a specific reserve results in a fair value measure as Level 2. All other individually analyzed loans are classified as Level 3. Other Real Estate Owned Real estate acquired through foreclosure is initially recorded at fair value. The fair value of other real estate owned is based on property appraisals and an analysis of similar properties currently available. As such, the Company records other real estate owned as nonrecurring Level 2. Mortgage Servicing Rights Mortgage servicing rights represent the value associated with servicing residential mortgage loans. Servicing assets and servicing liabilities are reported using the amortization method and compared to fair value for impairment. In evaluating the fair values of mortgage servicing rights, the Company obtains third party valuations based on loan level data including note rate, type, and term of the underlying loans. As such, the Company classifies mortgage servicing rights as Level 2. Time Deposits The fair value of maturity deposits is based on the discounted value of contractual cash flows using a replacement cost of funds approach. The discount rate is estimated using the cost of funds borrowing rate in the market. As such, the Company classifies time deposits as Level 2. Borrowed Funds The fair value of borrowed funds is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently available for borrowings of similar remaining maturities. As such, the Company classifies borrowed funds as Level 2. Derivatives The fair value of interest rate swaps is determined using inputs that are observable in the market place obtained from third parties including yield curves, publicly available volatilities, and floating indexes and, accordingly, are classified as Level 2 inputs. The credit value adjustments associated with derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. As of September 30, 2023 and 2022, and December 31, 2022, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives due to collateral postings. Customer Loan Derivatives The valuation of the Company’s customer loan derivatives is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of master netting arrangements and any applicable credit enhancements, such as collateral postings. Limitations Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These values do not reflect any premium or discount that could result from offering for sale at one time the Company's entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company's financial instruments, fair value estimates are based on Management's judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial instruments include the deferred tax asset, premises and equipment, and other real estate owned. In addition, tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in any of the estimates. Fair Value of Financial Instruments FASB ASC Topic 825 "Financial Instruments" requires disclosures of fair value information about financial instruments, whether or not recognized in the balance sheet if the fair values can be reasonably determined. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company's various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques using observable inputs when available. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. Topic 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. This summary excludes financial assets and liabilities for which carrying value approximates fair values and financial instruments that are recorded at fair value on a recurring basis. Financial instruments for which carrying values approximate fair value include cash equivalents, interest-bearing deposits in other banks, demand, NOW, savings, and money market deposits. The estimated fair value of demand, NOW, savings, and money market deposits is the amount payable on demand at the reporting date. Carrying value is used because the accounts have no stated maturity and the customer has the ability to withdraw funds immediately.
Impact of Recently Issued Accounting Standards	Impact of Recently Issued Accounting Standards Adoption of New Accounting Standards: On January 1, 2023, the Company adopted ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as amended, which replaces the incurred loss methodology with an expected loss methodology that is referred to as the CECL methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as loans, such as loan commitments, standby letters of credit, certain lines of credit. In addition, ASC 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities management does not intend to sell or believes that it is more likely than not they will be required to sell. The Company adopted ASC 326 using the modified retrospective method for all financial assets, measured at amortized cost, and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2023 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. On adoption, the Company recognized an increase in the allowance for credit losses on held to maturity securities of $438,000, an increase to the allowance for credit losses on loans of $6,210,000, and an increase to the reserve for off-balance sheet commitments of $1,297,000. The net, after-tax impact of the increases of the allowances for credit losses and reserve for off-balance sheet commitments was a net decrease to retained earnings of $6,277,000 shown in the Consolidated Statements of Changes in Stockholders Equity. Additional details can be found in Notes 3 and 4. In March 2023, the FASB issued ASU No. 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. This ASU expands the use of proportional amortization method of accounting — currently allowed only for investments in low-income housing tax credit (LIHTC) structures — to equity investments in other tax credit structures that meet certain criteria. The proportional amortization method results in (1) the tax credit investment being amortized in proportion to the allocation of tax credits and other tax benefits in each period and (2) net presentation within the income tax line item. The ASU is effective beginning in 2024 for calendar year-end public business entities. Adoption is not expected to have a material impact on the Company's consolidated financial statements.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Acronyms, Abbreviations and Definitions	The following is provided to aid the reader and provide a reference page when reviewing these sections of the Form 10-Q. Acronym Description Acronym Description ACL Allowance for credit losses GDP Gross domestic product AFS Available-for-sale GNMA Government National Mortgage Association ALCO Asset/Liability Committee HTM Held-to-maturity AOCI Accumulated other comprehensive income (loss) IRS Internal Revenue Service ASC Accounting Standards Codification LIBOR London Interbank Offered Rate ASU Accounting Standards Update MPF Mortgage Partnership Finance Program BTFP Bank Term Funding Program OAEM Other assets especially mentioned C&I Commercial and Industrial OCC Office of the Comptroller of the Currency CDs Certificates of deposit OCI Other comprehensive income (loss) CECL Current Expected Credit Loss OIS Overnight Indexed Swap CLLD Construction, land, and land development OREO Other real estate owned DFAST Dodd Frank Act Stress Tests POR Period of Redemption EPS Earnings per share PPP Paycheck Protection Program FASB Financial Accounting Standards Board PSA Public Securities Association FDIC Federal Deposit Insurance Corporation SBA Small Business Association FHLB Federal Home Loan Bank SEC Securities and Exchange Commission FHLBB Federal Home Loan Bank of Boston SOFR Secured Overnight Financing Rate FHLMC Federal Home Loan Mortgage Corporation TDR Troubled debt restructuring FNMA Federal National Mortgage Association The 2020 Plan The 2020 Equity Incentive Plan FOMC Federal Open Market Committee The Bank First National Bank FRB Federal Reserve Board The Company The First Bancorp, Inc. FRBB Federal Reserve Bank of Boston U.S. United States of America GAAP Accounting principles generally accepted in the U.S. USD U.S. Dollar

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule of Available For Sale, Held-to-Maturity, and Restricted Equity Securities	The following table summarizes the amortized cost and estimated fair value of investment securities at September 30, 2023: Amortized Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Treasury & Agency securities $ 45,851,000 $ — $ (7,599,000) $ 38,252,000 Mortgage-backed securities 263,775,000 1,000 (50,930,000) 212,846,000 State and political subdivisions 40,417,000 — (9,637,000) 30,780,000 Asset-backed securities 3,097,000 1,000 (4,000) 3,094,000 $ 353,140,000 $ 2,000 $ (68,170,000) $ 284,972,000 Securities to be held to maturity U.S. Treasury & Agency securities $ 40,100,000 $ — $ (11,996,000) $ 28,104,000 Mortgage-backed securities 57,224,000 4,000 (13,336,000) 43,892,000 State and political subdivisions 255,732,000 16,000 (46,807,000) 208,941,000 Corporate securities 34,750,000 — (3,823,000) 30,927,000 $ 387,806,000 $ 20,000 $ (75,962,000) $ 311,864,000 Less allowance for credit losses (432,000) — — — Net securities to be held to maturity $ 387,374,000 $ — $ — $ — Restricted equity securities Federal Home Loan Bank Stock $ 2,823,000 $ — $ — $ 2,823,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 3,860,000 $ — $ — $ 3,860,000 The following table summarizes the amortized cost and estimated fair value of investment securities at December 31, 2022: Amortized Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Treasury & Agency securities $ 26,025,000 $ — $ (6,878,000) $ 19,147,000 Mortgage-backed securities 271,068,000 55,000 (42,447,000) 228,676,000 State and political subdivisions 40,472,000 2,000 (7,283,000) 33,191,000 Asset-backed securities 3,548,000 — (53,000) 3,495,000 $ 341,113,000 $ 57,000 $ (56,661,000) $ 284,509,000 Securities to be held to maturity U.S. Treasury & Agency securities $ 40,100,000 $ 4,000 $ (10,477,000) $ 29,627,000 Mortgage-backed securities 60,497,000 42,000 (11,392,000) 49,147,000 State and political subdivisions 258,549,000 154,000 (30,733,000) 227,970,000 Corporate securities 34,750,000 — (2,483,000) 32,267,000 $ 393,896,000 $ 200,000 $ (55,085,000) $ 339,011,000 Restricted equity securities Federal Home Loan Bank Stock $ 2,846,000 $ — $ — $ 2,846,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 3,883,000 $ — $ — $ 3,883,000 The following table summarizes the amortized cost and estimated fair value of investment securities at September 30, 2022: Amortized Unrealized Gains Unrealized Losses Fair Value (Estimated) Securities available for sale U.S. Treasury & Agency securities $ 26,023,000 $ — $ (6,879,000) $ 19,144,000 Mortgage-backed securities 273,215,000 4,000 (44,041,000) 229,178,000 State and political subdivisions 40,489,000 — (9,383,000) 31,106,000 Asset-backed securities 3,872,000 — (32,000) 3,840,000 $ 343,599,000 $ 4,000 $ (60,335,000) $ 283,268,000 Securities to be held to maturity U.S. Treasury & Agency securities $ 38,100,000 $ — $ (10,428,000) $ 27,672,000 Mortgage-backed securities 56,423,000 48,000 (11,784,000) 44,687,000 State and political subdivisions 257,633,000 38,000 (43,899,000) 213,772,000 Corporate securities 29,750,000 — (2,085,000) 27,665,000 $ 381,906,000 $ 86,000 $ (68,196,000) $ 313,796,000 Restricted equity securities Federal Home Loan Bank Stock $ 3,477,000 $ — $ — $ 3,477,000 Federal Reserve Bank Stock 1,037,000 — — 1,037,000 $ 4,514,000 $ — $ — $ 4,514,000
Schedule of Contractual Maturities of Investment Securities	The following table summarizes the contractual maturities of investment securities at September 30, 2023: Securities available for sale Securities to be held to maturity Amortized Fair Value (Estimated) Amortized Fair Value (Estimated) Due in 1 year or less $ 19,819,000 $ 19,819,000 $ 2,158,000 $ 2,151,000 Due in 1 to 5 years 3,640,000 3,468,000 15,780,000 14,771,000 Due in 5 to 10 years 28,082,000 23,360,000 92,565,000 81,812,000 Due after 10 years 301,599,000 238,325,000 277,303,000 213,130,000 $ 353,140,000 $ 284,972,000 $ 387,806,000 $ 311,864,000 The following table summarizes the contractual maturities of investment securities at December 31, 2022: Securities available for sale Securities to be held to maturity Amortized Fair Value (Estimated) Amortized Fair Value (Estimated) Due in 1 year or less $ — $ — $ 1,787,000 $ 1,782,000 Due in 1 to 5 years 3,609,000 3,409,000 14,998,000 14,480,000 Due in 5 to 10 years 18,591,000 15,203,000 86,833,000 81,443,000 Due after 10 years 318,913,000 265,897,000 290,278,000 241,306,000 $ 341,113,000 $ 284,509,000 $ 393,896,000 $ 339,011,000 The following table summarizes the contractual maturities of investment securities at September 30, 2022: Securities available for sale Securities to be held to maturity Amortized Fair Value (Estimated) Amortized Fair Value (Estimated) Due in 1 year or less $ 4,000 $ 4,000 $ 1,346,000 $ 1,343,000 Due in 1 to 5 years 3,640,000 3,427,000 15,235,000 14,644,000 Due in 5 to 10 years 18,064,000 14,436,000 75,492,000 68,704,000 Due after 10 years 321,891,000 265,401,000 289,833,000 229,105,000 $ 343,599,000 $ 283,268,000 $ 381,906,000 $ 313,796,000
Schedule of Securities Gains and Losses	The following table shows securities gains and losses for the nine months and quarters ended September 30, 2023 and 2022: For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Proceeds from sales of securities $ — $ 1,301,000 $ — $ 1,301,000 Gross realized gains — 8,000 — 6,000 Gross realized losses — (1,000) — (1,000) Net gain (loss) $ — $ 7,000 $ — $ 5,000 Related income taxes $ — $ 1,000 $ — $ 1,000
Schedule of Temporary Impairment Losses	The following table summarizes debt securities in an unrealized loss position for which an allowance for credit losses has not been recorded at September 30, 2023, aggregated by major security type and length of time in a continuous unrealized loss position: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Treasury & Agency securities $ 11,842,000 $ (40,000) $ 44,577,000 $ (19,555,000) $ 56,419,000 $ (19,595,000) Mortgage-backed securities 18,017,000 (441,000) 238,150,000 (63,825,000) 256,167,000 (64,266,000) State and political subdivisions 66,583,000 (6,675,000) 147,818,000 (49,769,000) 214,401,000 (56,444,000) Asset-backed securities — — 1,510,000 (4,000) 1,510,000 (4,000) Corporate securities — — 21,677,000 (3,823,000) 21,677,000 (3,823,000) $ 96,442,000 $ (7,156,000) $ 453,732,000 $ (136,976,000) $ 550,174,000 $ (144,132,000) As of December 31, 2022, there were 869 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 300 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of December 31, 2022 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Treasury & Agency securities $ 4,804,000 $ (675,000) $ 41,965,000 $ (16,680,000) $ 46,769,000 $ (17,355,000) Mortgage-backed securities 73,509,000 (6,486,000) 197,102,000 (47,353,000) 270,611,000 (53,839,000) State and political subdivisions 149,517,000 (13,769,000) 67,932,000 (24,247,000) 217,449,000 (38,016,000) Asset-backed securities 3,495,000 (53,000) — — 3,495,000 (53,000) Corporate securities 19,857,000 (2,143,000) 3,160,000 (340,000) 23,017,000 (2,483,000) $ 251,182,000 $ (23,126,000) $ 310,159,000 $ (88,620,000) $ 561,341,000 $ (111,746,000) As of September 30, 2022, there were 912 securities with unrealized losses held in the Company's portfolio. These securities were temporarily impaired as a result of changes in interest rates reducing their fair value, of which 138 had been temporarily impaired for 12 months or more. Information regarding securities temporarily impaired as of September 30, 2022 is summarized below: Less than 12 months 12 months or more Total Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses Fair Value (Estimated) Unrealized Losses U.S. Treasury & Agency securities $ 7,364,000 $ (1,264,000) $ 39,452,000 $ (16,043,000) $ 46,816,000 $ (17,307,000) Mortgage-backed securities 109,041,000 (13,868,000) 162,979,000 (41,957,000) 272,020,000 (55,825,000) State and political subdivisions 197,145,000 (44,277,000) 17,902,000 (9,005,000) 215,047,000 (53,282,000) Asset-backed securities 3,840,000 (32,000) — — 3,840,000 (32,000) Corporate securities 20,186,000 (1,814,000) 3,229,000 (271,000) 23,415,000 (2,085,000) $ 337,576,000 $ (61,255,000) $ 223,562,000 $ (67,276,000) $ 561,138,000 $ (128,531,000)
Schedule of Activity in the ACL for Held-to-maturity Debt Securities	The following table presents the activity in the ACL for held-to-maturity debt securities by major security type for the nine months ended September 30, 2023: State and Political Subdivisions Corporate Securities Total Allowance for credit losses: Beginning balance $ — $ — $ — Impact of adopting ASC 326 229,000 209,000 438,000 Credit loss expense (reduction) 1 (17,000) 11,000 (6,000) Securities charged-off — — — Recoveries — — — Total ending allowance balance $ 212,000 $ 220,000 $ 432,000 1 Difference between total and amount reported on the Consolidated Statements of Income is due to rounding.

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Composition of Loan Portfolio	The following table shows the composition of the Company's loan portfolio by class of financing receivable as of September 30, 2023 and 2022 and at December 31, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Commercial Real estate owner occupied $ 299,943,000 14.4 % $ 256,623,000 13.4 % $ 251,410,000 13.6 % Real estate non-owner occupied 397,024,000 19.1 % 363,660,000 19.0 % 315,514,000 17.0 % Construction 72,424,000 3.5 % 93,907,000 4.9 % 129,036,000 6.9 % C&I 350,596,000 16.9 % 319,359,000 16.7 % 310,110,000 16.7 % Multifamily 91,041,000 4.4 % 79,057,000 4.1 % 71,784,000 3.9 % Municipal 58,447,000 2.8 % 40,619,000 2.1 % 48,702,000 2.6 % Residential Term 660,049,000 31.7 % 597,404,000 31.2 % 581,066,000 31.3 % Construction 28,986,000 1.4 % 49,907,000 2.6 % 41,631,000 2.2 % Home Equity Revolving and term 101,980,000 4.9 % 93,075,000 4.9 % 87,903,000 4.7 % Consumer 19,370,000 0.9 % 21,063,000 1.1 % 20,819,000 1.1 % Total $ 2,079,860,000 100.0 % $ 1,914,674,000 100.0 % $ 1,857,975,000 100.0 %
Schedule of Past Due Loans Aging	For all loan classes, loans over 30 days past due are considered delinquent. Information on the past-due status of loans by class of financing receivable as of September 30, 2023, is presented in the following table: 30-59 Days 60-89 Days 90+ Days All Current Total 90+ Days Commercial Real estate owner occupied $ — $ — $ — $ — $ 299,943,000 $ 299,943,000 $ — Real estate non-owner occupied — — — — 397,024,000 397,024,000 — Construction — 7,000 8,000 15,000 72,409,000 72,424,000 — C&I 349,000 100,000 221,000 670,000 349,926,000 350,596,000 — Multifamily — — — — 91,041,000 91,041,000 — Municipal — — — — 58,447,000 58,447,000 — Residential Term 39,000 106,000 578,000 723,000 659,326,000 660,049,000 — Construction — 62,000 — 62,000 28,924,000 28,986,000 — Home equity Revolving and term 79,000 — 179,000 258,000 101,722,000 101,980,000 — Consumer 210,000 39,000 11,000 260,000 19,110,000 19,370,000 11,000 Total $ 677,000 $ 314,000 $ 997,000 $ 1,988,000 $ 2,077,872,000 $ 2,079,860,000 $ 11,000 Information on the past-due status of loans by class of financing receivable as of December 31, 2022, is presented in the following table: 30-59 Days 60-89 Days 90+ Days All Current Total 90+ Days Commercial Real estate $ — $ 3,000 $ 190,000 $ 193,000 $ 699,147,000 $ 699,340,000 $ — Construction — — — — 93,907,000 93,907,000 — Other 118,000 23,000 85,000 226,000 319,133,000 319,359,000 34,000 Municipal — — — — 40,619,000 40,619,000 — Residential Term 135,000 33,000 284,000 452,000 596,952,000 597,404,000 118,000 Construction — — — — 49,907,000 49,907,000 — Home equity line of credit 241,000 29,000 151,000 421,000 92,654,000 93,075,000 86,000 Consumer 131,000 33,000 3,000 167,000 20,896,000 21,063,000 3,000 Total $ 625,000 $ 121,000 $ 713,000 $ 1,459,000 $ 1,913,215,000 $ 1,914,674,000 $ 241,000 Information on the past-due status of loans by class of financing receivable as of September 30, 2022, is presented in the following table: 30-59 Days 60-89 Days 90+ Days All Current Total 90+ Days Commercial Real estate $ — $ 4,000 $ 191,000 $ 195,000 $ 638,513,000 $ 638,708,000 $ — Construction — — — — 129,036,000 129,036,000 — Other 172,000 16,000 83,000 271,000 309,839,000 310,110,000 — Municipal — — — — 48,702,000 48,702,000 — Residential Term 79,000 77,000 166,000 322,000 580,744,000 581,066,000 — Construction — — — — 41,631,000 41,631,000 — Home equity line of credit 473,000 29,000 — 502,000 87,401,000 87,903,000 — Consumer 143,000 28,000 — 171,000 20,648,000 20,819,000 — Total $ 867,000 $ 154,000 $ 440,000 $ 1,461,000 $ 1,856,514,000 $ 1,857,975,000 $ —
Schedule of Nonaccrual Loans	The following table presents the amortized costs basis of loans on nonaccrual status as of September 30, 2023, December 31, 2022 and September 30, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Nonaccrual with Allowance for Credit Loss Nonaccrual with no Allowance for Credit Loss Total Nonaccrual Total Nonaccrual Total Nonaccrual Commercial Real estate owner occupied $ — $ — $ — $ 193,000 $ 195,000 Real estate non-owner occupied — — — — — Construction — 29,000 29,000 23,000 25,000 C&I 363,000 351,000 714,000 663,000 756,000 Multifamily — — — — — Municipal — — — — — Residential Term 304,000 1,016,000 1,320,000 572,000 637,000 Construction — — — — — Home equity Revolving and term — 490,000 490,000 304,000 247,000 Consumer — — — — — Total $ 667,000 $ 1,886,000 $ 2,553,000 $ 1,755,000 $ 1,860,000
Schedule of Individually Analyzed Loans by Class of Financing Receivable	The following table presents the amortized cost basis of collateral-dependent loans as of September 30, 2023 by collateral type: Collateral Type Commercial Real Estate Residential Real Estate Total Commercial Real estate owner occupied $ — $ — $ — Real estate non-owner occupied — — — Construction — — — C&I — — — Multifamily — — — Municipal — — — Residential Term — 687,000 687,000 Construction — — — Home Equity Revolving and term — — — Consumer — — — Total $ — $ 687,000 $ 687,000 A breakdown of individually analyzed loans by class of financing receivable as of and for the period ended September 30, 2023 is presented in the following table: For the nine months ended September 30, 2023 For the quarter ended September 30, 2023 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate owner occupied $ — $ — $ — $ 143,000 $ — $ — $ — Real estate non-owner occupied — — — 537,000 — — (12,000) Construction — — — 157,000 — — — C&I — — — 72,000 — — — Multifamily — — — — — — — Municipal — — — — — — — Residential Term 384,000 411,000 — 977,000 15,000 384,000 8,000 Construction — — — — — — — Home Equity Revolving and term — — — 238,000 — — — Consumer — — — — — — — $ 384,000 $ 411,000 $ — $ 2,124,000 $ 15,000 $ 384,000 $ (4,000) With an Allowance Recorded Commercial Real estate owner occupied $ — $ — $ — $ — $ — $ — $ — Real estate non-owner occupied — — — — — — — Construction — — — — — — — C&I 363,000 456,000 225,000 502,000 — 366,000 — Multifamily — — — — — — — Municipal — — — — — — — Residential Term 566,000 573,000 41,000 878,000 10,000 697,000 (2,000) Construction — — — — — — — Home Equity Revolving and term — — — 9,000 — — — Consumer — — — — — — — $ 929,000 $ 1,029,000 $ 266,000 $ 1,389,000 $ 10,000 $ 1,063,000 $ (2,000) Total Commercial Real estate owner occupied $ — $ — $ — $ 143,000 $ — $ — $ — Real estate non-owner occupied — — — 537,000 — — (12,000) Construction — — — 157,000 — $ — — C&I 363,000 456,000 225,000 574,000 — 366,000 — Multifamily — — — — — — — Municipal — — — — — — — Residential Term 950,000 984,000 41,000 1,855,000 25,000 1,081,000 6,000 Construction — — — — — — — Home Equity Revolving and term — — — 247,000 — — — Consumer — — — — — — — $ 1,313,000 $ 1,440,000 $ 266,000 $ 3,513,000 $ 25,000 $ 1,447,000 $ (6,000) A breakdown of individually analyzed loans by class of financing receivable as of and for the year ended December 31, 2022 is presented in the following table: Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 1,236,000 $ 1,532,000 $ — $ 1,440,000 $ 50,000 Construction 685,000 687,000 — 81,000 35,000 Other 301,000 348,000 — 408,000 13,000 Municipal — — — — — Residential Term 1,833,000 2,035,000 — 4,507,000 56,000 Construction — — — — — Home equity line of credit 304,000 340,000 — 295,000 — Consumer — — — 1,000 — $ 4,359,000 $ 4,942,000 $ — $ 6,732,000 $ 154,000 With an Allowance Recorded Commercial Real estate $ — $ — $ — $ 11,000 $ — Construction — — — 606,000 — Other 545,000 647,000 298,000 693,000 — Municipal — — — — — Residential Term 1,256,000 1,259,000 100,000 1,486,000 50,000 Construction — — — — — Home equity line of credit — — — 8,000 — Consumer — — — — — $ 1,801,000 $ 1,906,000 $ 398,000 $ 2,804,000 $ 50,000 Total Commercial Real estate $ 1,236,000 $ 1,532,000 $ — $ 1,451,000 $ 50,000 Construction 685,000 687,000 — 687,000 35,000 Other 846,000 995,000 298,000 1,101,000 13,000 Municipal — — — — — Residential Term 3,089,000 3,294,000 100,000 5,993,000 106,000 Construction — — — — — Home equity line of credit 304,000 340,000 — 303,000 — Consumer — — — 1,000 — $ 6,160,000 $ 6,848,000 $ 398,000 $ 9,536,000 $ 204,000 A breakdown of individually analyzed loans by class of financing receivable as of and for the period ended September 30, 2022 is presented in the following table: For the nine months ended September 30, 2022 For the quarter ended September 30, 2022 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Recognized Interest Income Average Recorded Investment Recognized Interest Income With No Related Allowance Commercial Real estate $ 1,295,000 $ 1,607,000 $ — $ 1,497,000 $ 42,000 $ 1,314,000 $ 14,000 Construction 25,000 27,000 — 26,000 — 25,000 — Other 399,000 459,000 — 432,000 10,000 405,000 2,000 Municipal — — — — — — — Residential Term 1,912,000 2,139,000 — 5,380,000 40,000 4,666,000 (9,000) Construction — — — — — — — Home equity line of credit 247,000 279,000 — 299,000 — 249,000 — Consumer — — — 1,000 — — — $ 3,878,000 $ 4,511,000 $ — $ 7,635,000 $ 92,000 $ 6,659,000 $ 7,000 With an Allowance Recorded Commercial Real estate $ — $ — $ — $ 14,000 $ — $ — $ — Construction 661,000 661,000 6,000 661,000 27,000 661,000 16,000 Other 552,000 647,000 315,000 745,000 — 679,000 — Municipal — — — — — — — Residential Term 1,264,000 1,267,000 99,000 1,562,000 34,000 1,384,000 9,000 Construction — — — — — — — Home equity line of credit — — — 11,000 — — — Consumer — — — — — — — $ 2,477,000 $ 2,575,000 $ 420,000 $ 2,993,000 $ 61,000 $ 2,724,000 $ 25,000 Total Commercial Real estate $ 1,295,000 $ 1,607,000 $ — $ 1,511,000 $ 42,000 $ 1,314,000 $ 14,000 Construction 686,000 688,000 6,000 687,000 27,000 686,000 16,000 Other 951,000 1,106,000 315,000 1,177,000 10,000 1,084,000 2,000 Municipal — — — — — — — Residential Term 3,176,000 3,406,000 99,000 6,942,000 74,000 6,050,000 — Construction — — — — — — — Home equity line of credit 247,000 279,000 — 310,000 — 249,000 — Consumer — — — 1,000 — — — $ 6,355,000 $ 7,086,000 $ 420,000 $ 10,628,000 $ 153,000 $ 9,383,000 $ 32,000
Schedule of Troubled Debt Restructurings on Financing Receivables	The following table represents loan modifications made to borrowers experiencing financial difficulty by modification type and class of financing receivable, during the three months ended September 30, 2023: Payment Deferral Amortized Cost Basis at September 30, 2023 % of Total Class of Financing Receivable Commercial Real estate owner occupied $ 504,000 0.17 % C&I 19,000 0.01 % $ 523,000 0.03 % The following table describes the financial effect of the modifications made to borrowers experiencing financial difficulty for the three months ended September 30, 2023: Payment Deferral Financial Effect Commercial Real estate owner occupied Temporary payment accommodation, payments deferred to end of loan. C&I Temporary payment accommodation, payments deferred to end of loan. The Company monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified during the nine months ended September 30, 2023: Payment Status (Amortized Cost Basis) Current 30-59 Days 60-89 Days 90+ Days Commercial Real estate owner occupied $ 503,000 $ — $ — $ — C&I 220,000 40,000 — — Total $ 723,000 $ 40,000 $ — $ — The following table shows TDRs by class and the specific reserve as of December 31, 2022: Number of Loans Balance Specific Reserves Commercial Real estate 5 $ 1,044,000 $ — Construction 1 661,000 — Other 3 361,000 81,000 Municipal — — — Residential Term 20 2,678,000 100,000 Construction — — — Home equity line of credit — — — Consumer — — — 29 $ 4,744,000 $ 181,000 As of December 31, 2022, one of the loans classified as TDR with a total balance of $97,000 was more than 30 days past due and was not placed on TDR status in the previous 12 months. The following table shows past-due TDRs by class and the associated specific reserves included in the allowance for loan losses as of December 31, 2022: Number of Loans Balance Specific Reserves Commercial Real estate — $ — $ — Construction — — — Other 1 97,000 — Municipal — — — Residential Term — — — Construction — — — Home equity line of credit — — — Consumer — — — 1 $ 97,000 $ — For the year ended December 31, 2022, one loan was placed on TDR status. The following table shows this TDR by class and the associated specific reserves included in the allowance for loan losses as of December 31, 2022: Number of Loans Pre-Modification Post-Modification Outstanding Specific Reserves Commercial Real estate — $ — $ — $ — Construction — — — — Other — — — — Municipal — — — — Residential Term 1 38,000 38,000 — Construction — — — — Home equity line of credit — — — — Consumer — — — — 1 $ 38,000 $ 38,000 $ —

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Allowance for Loan Losses by Class of Financing Receivable and Allowance	A breakdown of the allowance for credit losses as of September 30, 2023, by class of financing receivable and allowance element, is presented in the following table: As of September 30, 2023 Specific Reserves on Loans Evaluated Individually General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Total Reserves Commercial Real estate owner occupied $ — $ 3,731,000 $ 780,000 $ 4,511,000 Real estate non-owner occupied — 3,855,000 574,000 4,429,000 Construction — 1,445,000 157,000 1,602,000 C&I 225,000 3,909,000 663,000 4,797,000 Multifamily — 1,184,000 93,000 1,277,000 Municipal — 332,000 44,000 376,000 Residential Term 41,000 4,020,000 825,000 4,886,000 Construction — 602,000 (26,000) 576,000 Home Equity Revolving and term — 442,000 175,000 617,000 Consumer — 219,000 32,000 251,000 $ 266,000 $ 19,739,000 $ 3,317,000 $ 23,322,000 A breakdown of the allowance for loan losses as of December 31, 2022 under the incurred loss method, by class of financing receivable and allowance element, is presented in the following table: As of December 31, 2022 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Total Reserves Commercial Real estate $ — $ 974,000 $ 5,142,000 $ — $ 6,116,000 Construction — 131,000 690,000 — 821,000 Other 298,000 446,000 2,353,000 — 3,097,000 Municipal — — 162,000 — 162,000 Residential Term 100,000 83,000 2,376,000 — 2,559,000 Construction — 7,000 192,000 — 199,000 Home equity line of credit — 101,000 928,000 — 1,029,000 Consumer — 286,000 776,000 — 1,062,000 Unallocated — — — 1,678,000 1,678,000 $ 398,000 $ 2,028,000 $ 12,619,000 $ 1,678,000 $ 16,723,000 A breakdown of the allowance for loan losses as of September 30, 2022 under the incurred loss method, by class of financing receivable and allowance element, is presented in the following table: As of September 30, 2022 Specific Reserves on Loans Evaluated Individually for Impairment General Reserves on Loans Based on Historical Loss Experience Reserves for Qualitative Factors Unallocated Total Reserves Commercial Real estate $ — $ 867,000 $ 4,708,000 $ — $ 5,575,000 Construction 6,000 173,000 942,000 — 1,121,000 Other 315,000 420,000 2,279,000 — 3,014,000 Municipal — — 160,000 — 160,000 Residential Term 99,000 102,000 2,346,000 — 2,547,000 Construction — 7,000 161,000 — 168,000 Home equity line of credit — 106,000 887,000 — 993,000 Consumer — 216,000 656,000 — 872,000 Unallocated — — — 1,937,000 1,937,000 $ 420,000 $ 1,891,000 $ 12,139,000 $ 1,937,000 $ 16,387,000
Schedule of ACL for Off-balance Sheet Credit Exposure	The following table presents the activity in the ACL for off-balance sheet credit exposures for the nine months ended September 30, 2023 : Allowance for credit losses: Beginning balance, prior to adoption of ASC 326 $ 100,000 Impact of adopting ASC 326 1,297,000 Credit loss expense 89,000 Total ending allowance balance $ 1,486,000
Schedule of Credit Quality Risk Ratings for Loans	The following table summarizes the credit quality for the Company's portfolio by risk category of loans and by class by vintage as follows: Term Loans Amortized Cost Basis by Origination Year Dollars in thousands 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Commercial Real estate owner occupied Pass (risk rating 1-5) $ 43,022 $ 75,590 $ 41,851 $ 28,387 $ 35,696 $ 65,064 $ 9,355 $ 175 $ 299,140 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) 283 — — — 503 17 — — 803 Doubtful (risk rating 8) — — — — — — — — — Total Real Estate Owner Occupied 43,305 75,590 41,851 28,387 36,199 65,081 9,355 175 299,943 Current period gross write-offs — — — — — 40 — — 40 Real estate non-owner occupied Pass (risk rating 1-5) 27,875 71,474 130,132 49,160 27,670 85,559 5,092 — 396,962 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) — — — — — 62 — — 62 Doubtful (risk rating 8) — — — — — — — — — Total Real Estate Non-Owner Occupied 27,875 71,474 130,132 49,160 27,670 85,621 5,092 — 397,024 Current period gross write-offs — — — — — — — — — Construction Pass (risk rating 1-5) 16,892 41,852 8,506 1,665 1,039 2,470 — — 72,424 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) — — — — — — — — — Doubtful (risk rating 8) — — — — — — — — — Total Construction 16,892 41,852 8,506 1,665 1,039 2,470 — — 72,424 Current period gross write-offs — — — — — — — — — C&I Pass (risk rating 1-5) 43,648 66,873 53,712 37,052 6,526 38,003 90,748 11,937 348,499 Special Mention (risk rating 6) — 129 268 — — 8 400 — 805 Substandard (risk rating 7) 94 363 35 — 188 545 67 — 1,292 Doubtful (risk rating 8) — — — — — — — — — Total C&I 43,742 67,365 54,015 37,052 6,714 38,556 91,215 11,937 350,596 Current period gross write-offs — — — — 16 — — — 16 Multifamily Pass (risk rating 1-5) 8,435 32,082 18,172 16,103 5,553 8,796 329 207 89,677 Special Mention (risk rating 6) — — 1,364 — — — — — 1,364 Substandard (risk rating 7) — — — — — — — — — Doubtful (risk rating 8) — — — — — — — — — Total Multifamily 8,435 32,082 19,536 16,103 5,553 8,796 329 207 91,041 Current period gross write-offs — — — — — — — — — Municipal Pass (risk rating 1-5) 24,527 6,239 4,121 10,226 5,270 8,064 — — 58,447 Special Mention (risk rating 6) — — — — — — — — — Substandard (risk rating 7) — — — — — — — — — Doubtful (risk rating 8) — — — — — — — — — Total Municipal 24,527 6,239 4,121 10,226 5,270 8,064 — — 58,447 Current period gross write-offs — — — — — — — — — Term Loans Amortized Cost Basis by Origination Year Dollars in thousands 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Residential Term Performing 47,019 149,470 143,048 97,350 40,621 179,788 1,301 132 658,729 Non-performing — 304 — 81 340 595 — — 1,320 Total Term 47,019 149,774 143,048 97,431 40,961 180,383 1,301 132 660,049 Current period gross write-offs — — — — — — — — — Construction Performing 15,966 11,715 — 1,305 — — — — 28,986 Non-performing — — — — — — — — — Total Construction 15,966 11,715 — 1,305 — — — — 28,986 Current period gross write-offs — — — — — — — — — Home Equity Revolving and Term Performing 8,154 9,472 2,073 1,214 609 1,754 67,639 10,575 101,490 Non-performing — — — — — 115 198 177 490 Total Home Equity Revolving and Term 8,154 9,472 2,073 1,214 609 1,869 67,837 10,752 101,980 Current period gross write-offs — — — — — — — — — Consumer Performing 3,072 2,338 1,296 1,951 538 4,404 5,771 — 19,370 Non-performing — — — — — — — — — Total Consumer 3,072 2,338 1,296 1,951 538 4,404 5,771 — 19,370 Current period gross write-offs 5 41 30 30 7 39 — — 152 Total loans $ 238,987 $ 467,901 $ 404,578 $ 244,494 $ 124,553 $ 395,244 $ 180,900 $ 23,203 $ 2,079,860
Schedule of Allowance for Loan Losses Transactions	The following table presents allowance for credit losses activity by class for the nine months and quarter ended September 30, 2023: Dollars in thousands Commercial Municipal Residential Home Equity Consumer Unallocated Total Real Estate Owner Occupied Real Estate Non-Owner Occupied Construction C&I Multifamily Term Construction Revolving and term For the nine months ended September 30, 2023 Beginning balance, prior to adoption of ASC 326 $ 6,116 $ — $ 821 $ 3,097 $ — $ 162 $ 2,559 $ 199 $ 1,029 $ 1,062 $ 1,678 $ 16,723 Charge offs 40 — — 16 — — — — — 152 — 208 Recoveries 2 75 — 3 — — 10 — 10 78 — 178 Provision (credit) 119 39 (162) 68 93 82 439 (358) 34 65 — 419 Impact of adopting ASC 326 (1,686) 4,315 943 1,645 1,184 132 1,878 735 (456) (802) (1,678) 6,210 Ending balance $ 4,511 $ 4,429 $ 1,602 $ 4,797 $ 1,277 $ 376 $ 4,886 $ 576 $ 617 $ 251 $ — $ 23,322 For the three months ended September 30, 2023 Beginning balance $ 4,719 $ 4,492 $ 1,469 $ 4,721 $ 1,312 $ 399 $ 4,831 $ 609 $ 635 $ 278 $ — $ 23,465 Charge offs 1 — — 16 — — — — — 69 — 86 Recoveries 2 — — — — — 4 — 3 20 — 104 Provision (credit) (209) (63) 133 92 (35) (23) 51 (33) (21) 22 — (161) Ending balance $ 4,511 $ 4,429 $ 1,602 $ 4,797 $ 1,277 $ 376 $ 4,886 $ 576 $ 617 $ 251 $ — $ 23,322 The following table presents allowance for loan losses activity by class for the year ended December 31, 2022: Dollars in thousands Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the year ended December 31, 2022 Beginning balance $ 5,367 $ 746 $ 2,830 $ 157 $ 2,733 $ 148 $ 925 $ 833 $ 1,782 $ 15,521 Charge offs — — 309 — 8 — 29 412 — 758 Recoveries 20 — 13 — 29 — 4 144 — 210 Provision (credit) 729 75 563 5 (195) 51 129 497 (104) 1,750 Ending balance $ 6,116 $ 821 $ 3,097 $ 162 $ 2,559 $ 199 $ 1,029 $ 1,062 $ 1,678 $ 16,723 The following table presents allowance for loan losses activity by class for the nine months and quarter ended September 30, 2022: Dollars in thousands Commercial Municipal Residential Home Equity Line of Credit Consumer Unallocated Total Real Estate Construction Other Term Construction For the nine months ended September 30, 2022 Beginning balance $ 5,367 $ 746 $ 2,830 $ 157 $ 2,733 $ 148 $ 925 $ 833 $ 1,782 $ 15,521 Charge offs — — 272 — — — 29 318 — 619 Recoveries 16 — 11 — 27 — 3 128 — 185 Provision (credit) 192 375 445 3 (213) 20 94 229 155 1,300 Ending balance $ 5,575 $ 1,121 $ 3,014 $ 160 $ 2,547 $ 168 $ 993 $ 872 $ 1,937 $ 16,387 For the three months ended September 30, 2022 Beginning balance $ 5,480 $ 1,151 $ 2,948 $ 157 $ 2,592 $ 191 $ 966 $ 866 $ 1,850 $ 16,201 Charge offs — — 229 — — — — 31 — 260 Recoveries (1) — 9 — 16 — 2 20 — 46 Provision (credit) 96 (30) 286 3 (61) (23) 25 17 87 400 Ending balance $ 5,575 $ 1,121 $ 3,014 $ 160 $ 2,547 $ 168 $ 993 $ 872 $ 1,937 $ 16,387

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Nonvested Restricted Stock Units Activity	As of September 30, 2023, 98,810 shares of restricted stock had been granted under the 2020 Plan, of which 83,127 shares remain restricted as of September 30, 2023 as detailed in the following table: Year Vesting Term Shares Remaining Term 2021 3.0 25,968 0.3 2022 3.0 23,654 1.3 2022 2.5 1,250 1.3 2023 3.0 27,559 2.3 2023 2.0 2,946 1.3 2023 1.0 1,750 0.3 83,127 1.3

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings per Share (EPS)	The following table sets forth the computation of basic and diluted EPS for the nine months ended September 30, 2023 and 2022: Income (Numerator) Shares (Denominator) Per-Share Amount For the nine months ended September 30, 2023 Net income as reported $ 22,839,000 Basic EPS: Income available to common shareholders 22,839,000 10,993,406 $ 2.08 Effect of dilutive securities: restricted stock 84,089 Diluted EPS: Income available to common shareholders plus assumed conversions $ 22,839,000 11,077,495 $ 2.06 For the nine months ended September 30, 2022 Net income as reported $ 29,793,000 Basic EPS: Income available to common shareholders 29,793,000 10,927,920 $ 2.73 Effect of dilutive securities: restricted stock 98,651 Diluted EPS: Income available to common shareholders plus assumed conversions $ 29,793,000 11,026,571 $ 2.70 The following table sets forth the computation of basic and diluted EPS for the quarters ended September 30, 2023 and 2022: Income (Numerator) Shares (Denominator) Per-Share Amount For the quarter ended September 30, 2023 Net income as reported $ 7,474,000 Basic EPS: Income available to common shareholders 7,474,000 11,003,987 $ 0.68 Effect of dilutive securities: restricted stock 83,146 Diluted EPS: Income available to common shareholders plus assumed conversions $ 7,474,000 11,087,133 $ 0.67 For the quarter ended September 30, 2022 Net income as reported $ 10,091,000 Basic EPS: Income available to common shareholders 10,091,000 10,934,492 $ 0.92 Effect of dilutive securities: restricted stock 100,899 Diluted EPS: Income available to common shareholders plus assumed conversions $ 10,091,000 11,035,391 $ 0.91

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2023
Retirement Benefits, Description [Abstract]
Schedule of Accumulated Postretirement Benefit Obligation and Funded Status	The following table sets forth the accumulated postretirement benefit obligation and funded status: At or for the nine months ended September 30, 2023 2022 Change in benefit obligation Benefit obligation at beginning of year $ 1,050,000 $ 1,353,000 Interest cost 14,000 24,000 Benefits paid (66,000) (66,000) Benefit obligation at end of period $ 998,000 $ 1,311,000 Funded status Benefit obligation at end of period $ (998,000) $ (1,311,000) Unamortized gain (345,000) (133,000) Accrued benefit cost at end of period $ (1,343,000) $ (1,444,000)
Schedule of Net Pension Costs	The following table sets forth the net periodic pension cost: For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Components of net periodic benefit cost Interest cost $ 14,000 $ 24,000 $ 4,000 $ 7,000 Net periodic benefit cost $ 14,000 $ 24,000 $ 4,000 $ 7,000
Schedule of Net Periodic Benefit Cost Not Yet Recognized	Amounts not yet reflected in net periodic benefit cost and included in AOCI are as follows: September 30, 2023 December 31, 2022 September 30, 2022 Unamortized net actuarial gain $ 345,000 $ 345,000 $ 133,000 Deferred tax expense (72,000) (72,000) (28,000) Net unrecognized postretirement benefits included in AOCI $ 273,000 $ 273,000 $ 105,000

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table summarizes activity in the unrealized gain or loss on available for sale securities included in OCI for the nine months and quarters ended September 30, 2023 and 2022. For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Balance at beginning of period $ (44,718,000) $ (1,718,000) $ (43,781,000) $ (32,795,000) Unrealized losses arising during the period (11,562,000) (58,149,000) (12,748,000) (18,812,000) Reclassification of net realized gains during the period — (7,000) — (6,000) Related deferred taxes 2,428,000 12,213,000 2,677,000 3,952,000 Net change (9,134,000) (45,943,000) (10,071,000) (14,866,000) Balance at end of period $ (53,852,000) $ (47,661,000) $ (53,852,000) $ (47,661,000) The following table summarizes activity in the unrealized loss on securities transferred from available for sale to held to maturity included in OCI for the nine months and quarters ended September 30, 2023 and 2022. For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Balance at beginning of period $ (64,000) $ (87,000) $ (59,000) $ (73,000) Amortization of net unrealized gains 7,000 25,000 1,000 7,000 Related deferred taxes (1,000) (5,000) — (1,000) Net change 6,000 20,000 1,000 6,000 Balance at end of period $ (58,000) $ (67,000) $ (58,000) $ (67,000) The following table presents the effect of the Company's derivative financial instruments included in OCI for the nine months and quarters ended September 30, 2023 and 2022. For the nine months ended September 30, For the quarter ended September 30, 2023 2022 2023 2022 Balance at beginning of period $ 544,000 $ — $ 680,000 $ 146,000 Unrealized gains on cash flow hedging derivatives arising during the period 1,096,000 633,000 924,000 448,000 Related deferred taxes (230,000) (133,000) (194,000) (94,000) Net change 866,000 500,000 730,000 354,000 Balance at end of period $ 1,410,000 $ 500,000 $ 1,410,000 $ 500,000

Financial Derivative Instrume_2

Financial Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The details of the Bank's swap agreements are as follows: September 30, 2023 December 31, 2022 September 30, 2022 Effective Date Maturity Date Variable Index Received Fixed Rate Paid Presentation on Consolidated Balance Sheets Notional Amount Fair Value Notional Amount Fair Value Notional Amount Fair Value Cash Flow Hedges 04/27/2022 10/27/2023 USD-SOFR-COMPOUND 2.498% Other Assets $ 10,000,000 $ 20,000 $ 10,000,000 $ 187,000 $ 10,000,000 $ 179,000 04/27/2022 01/27/2024 USD-SOFR-COMPOUND 2.576% Other Assets 10,000,000 92,000 10,000,000 233,000 10,000,000 212,000 04/27/2022 04/27/2024 USD-SOFR-COMPOUND 2.619% Other Assets 10,000,000 159,000 10,000,000 269,000 10,000,000 242,000 01/10/2023 01/01/2026 USD-SOFR-OIS COMPOUND 3.836% Other Assets 75,000,000 1,513,000 — — — — $ 105,000,000 $ 1,784,000 $ 30,000,000 $ 689,000 $ 30,000,000 $ 633,000 Fair Value Hedges 03/08/2023 03/01/2026 USD-SOFR-OIS COMPOUND 4.712% Other Assets $ 40,000,000 $ 63,000 $ — $ — $ — $ — 03/08/2023 03/01/2027 USD-SOFR-OIS COMPOUND 4.402% Other Assets 30,000,000 120,000 — — — — 03/08/2023 03/01/2028 USD-SOFR-OIS COMPOUND 4.189% Other Assets 30,000,000 250,000 — — — — 07/12/2023 08/01/2025 USD-SOFR-OIS COMPOUND 4.703% Other Assets 50,000,000 272,000 — — — — $ 150,000,000 $ 705,000 $ — $ — $ — $ — Total swap agreements $ 255,000,000 $ 2,489,000 $ 30,000,000 $ 689,000 $ 30,000,000 $ 633,000 At September 30, 2023 and 2022, and December 31, 2022, there were six customer loan swap arrangements in place, detailed below: September 30, 2023 December 31, 2022 September 30, 2022 Presentation on Consolidated Balance Sheet Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Number of Positions Notional Amount Fair Value Pay Fixed, Receive Variable Other Assets 6 $ 36,572,000 $ 6,031,000 6 $ 37,411,000 $ 4,910,000 6 $ 38,628,000 $ 5,365,000 6 36,572,000 6,031,000 6 37,411,000 4,910,000 6 38,628,000 5,365,000 Receive Fixed, Pay Variable Other Liabilities 6 36,572,000 (6,031,000) 6 37,411,000 (4,910,000) 6 38,628,000 (5,365,000) 6 36,572,000 (6,031,000) 6 37,411,000 (4,910,000) 6 38,628,000 (5,365,000) Total 12 $ 73,144,000 $ — 12 $ 74,822,000 $ — 12 $ 77,256,000 $ —

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
	Sep. 30, 2023
Transfers and Servicing [Abstract]
Schedule of Reconciliation of Mortgage Servicing Assets	Mortgage servicing rights are included in other assets and detailed in the following table: September 30, 2023 December 31, 2022 September 30, 2022 Mortgage servicing rights $ 8,687,000 $ 8,654,000 $ 8,640,000 Accumulated amortization (6,441,000) (6,161,000) (6,046,000) Carrying value $ 2,246,000 $ 2,493,000 $ 2,594,000

Certificates of Deposit (Tables

Certificates of Deposit (Tables)	9 Months Ended
	Sep. 30, 2023
Deposits [Abstract]
Schedule of Certificates of Deposit	The following table represents the breakdown of certificates of deposit at September 30, 2023 and 2022, and at December 31, 2022: September 30, 2023 December 31, 2022 September 30, 2022 Certificates of deposit < $100,000 $ 641,429,000 $ 489,793,000 $ 407,344,000 Certificates $100,000 to $250,000 234,962,000 259,614,000 295,112,000 Certificates $250,000 and over 132,775,000 118,264,000 83,720,000 $ 1,009,166,000 $ 867,671,000 $ 786,176,000

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured on Recurring Basis Measured at Fair Value	The following tables present the balances of assets and liabilities that were measured at fair value on a recurring basis as of September 30, 2023, December 31, 2022 and September 30, 2022. At September 30, 2023 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 38,252,000 $ — $ 38,252,000 Mortgage-backed securities — 212,846,000 — 212,846,000 State and political subdivisions — 30,780,000 — 30,780,000 Asset-backed securities — 3,094,000 — 3,094,000 Total securities available for sale — 284,972,000 — 284,972,000 Interest rate swap agreements — 2,489,000 — 2,489,000 Customer loan interest swap agreements — 6,031,000 — 6,031,000 Total interest rate swap agreements — 8,520,000 — 8,520,000 Total assets $ — $ 293,492,000 $ — $ 293,492,000 At September 30, 2023 Level 1 Level 2 Level 3 Total Interest rate swap agreements $ — $ — $ — $ — Customer loan interest swap agreements — 6,031,000 — 6,031,000 Total liabilities $ — $ 6,031,000 $ — $ 6,031,000 At December 31, 2022 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 19,147,000 $ — $ 19,147,000 Mortgage-backed securities — 228,676,000 — 228,676,000 State and political subdivisions — 33,191,000 — 33,191,000 Asset-backed securities — 3,495,000 — 3,495,000 Total securities available for sale — 284,509,000 — 284,509,000 Interest rate swap agreements — 689,000 — 689,000 Customer loan interest swap agreements — 4,910,000 — 4,910,000 Total interest rate swap agreements — 5,599,000 — 5,599,000 Total assets $ — $ 290,108,000 $ — $ 290,108,000 At December 31, 2022 Level 1 Level 2 Level 3 Total Customer loan interest swap agreements $ — $ 4,910,000 $ — $ 4,910,000 Total liabilities $ — $ 4,910,000 $ — $ 4,910,000 At September 30, 2022 Level 1 Level 2 Level 3 Total Securities available for sale U.S. Government-sponsored agencies $ — $ 19,144,000 $ — $ 19,144,000 Mortgage-backed securities — 229,178,000 — 229,178,000 State and political subdivisions — 31,106,000 — 31,106,000 Asset-backed securities — 3,840,000 — 3,840,000 Total securities available for sale — 283,268,000 — 283,268,000 Interest rate swap agreements — 633,000 — 633,000 Customer loan interest swap agreements — 5,365,000 — 5,365,000 Total interest swap agreements — 5,998,000 — 5,998,000 Total assets $ — $ 289,266,000 $ — $ 289,266,000 At September 30, 2022 Level 1 Level 2 Level 3 Total Customer loan interest swap agreements $ — $ 5,365,000 $ — $ 5,365,000 Total liabilities $ — $ 5,365,000 $ — $ 5,365,000
Schedule of Assets Measured on Nonrecurring Basis Measured at Fair Value	The following tables include assets measured at fair value on a nonrecurring basis that have had a fair value adjustment since their initial recognition. Mortgage servicing rights are presented at fair value with no impairment reserve for each of the periods presented. Only collateral-dependent individually analyzed loans with a related specific allowance for credit losses or a partial charge off are included in individually analyzed loans for purposes of fair value disclosures. Individually analyzed loans below are presented net of specific allowances of $19,000, $135,000 and $151,000 at September 30, 2023, December 31, 2022, and September 30, 2022, respectively. At September 30, 2023 Level 1 Level 2 Level 3 Total Mortgage servicing rights $ — $ 3,673,000 $ — $ 3,673,000 Individually analyzed loans — 285,000 — 285,000 Total assets $ — $ 3,958,000 $ — $ 3,958,000 At December 31, 2022 Level 1 Level 2 Level 3 Total Mortgage servicing rights $ — $ 3,734,000 $ — $ 3,734,000 Individually analyzed loans — 20,000 — 20,000 Total assets $ — $ 3,754,000 $ — $ 3,754,000 At September 30, 2022 Level 1 Level 2 Level 3 Total Mortgage servicing rights $ — $ 3,789,000 $ — $ 3,789,000 Individually analyzed loans — 5,000 — 5,000 Total assets $ — $ 3,794,000 $ — $ 3,794,000
Schedule of Estimated Fair Value of Financial Instruments	The carrying amount and estimated fair values for financial instruments as of September 30, 2023 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity (net of allowance for credit losses) $ 387,374,000 $ 311,864,000 $ — $ 311,864,000 $ — Loans (net of allowance for credit losses) Commercial Real estate 688,027,000 652,297,000 — — 652,297,000 Construction 70,822,000 67,144,000 — — 67,144,000 Other 435,563,000 423,464,000 — — 423,464,000 Municipal 58,071,000 52,196,000 — — 52,196,000 Residential Term 655,431,000 577,982,000 — 285,000 577,697,000 Construction 28,410,000 27,972,000 — — 27,972,000 Home equity line of credit 101,363,000 102,124,000 — — 102,124,000 Consumer 19,119,000 16,978,000 — — 16,978,000 Total loans 2,056,806,000 1,920,157,000 — 285,000 1,919,872,000 Mortgage servicing rights 2,246,000 3,673,000 — 3,673,000 — Financial liabilities Local certificates of deposit $ 338,280,000 $ 319,218,000 $ — $ 319,218,000 $ — National certificates of deposit 670,886,000 672,654,000 — 672,654,000 — Total certificates of deposit 1,009,166,000 991,872,000 — 991,872,000 — Repurchase agreements 52,915,000 52,793,000 — 52,793,000 — Federal Home Loan Bank advances 30,078,000 30,074,000 — 30,074,000 — Total borrowed funds 82,993,000 82,867,000 — 82,867,000 — The carrying amounts and estimated fair values for financial instruments as of December 31, 2022 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 393,896,000 $ 339,011,000 $ — $ 339,011,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 692,541,000 669,752,000 — — 669,752,000 Construction 92,994,000 89,934,000 — — 89,934,000 Other 315,917,000 312,219,000 — 20,000 312,199,000 Municipal 40,439,000 38,069,000 — — 38,069,000 Residential Term 611,350,000 558,274,000 — — 558,274,000 Construction 49,686,000 44,410,000 — — 44,410,000 Home equity line of credit 75,416,000 78,878,000 — — 78,878,000 Consumer 19,883,000 18,142,000 — — 18,142,000 Total loans 1,898,226,000 1,809,678,000 — 20,000 1,809,658,000 Mortgage servicing rights 2,493,000 3,734,000 — 3,734,000 — Financial liabilities Local certificates of deposit $ 291,152,000 $ 275,658,000 $ — $ 275,658,000 $ — National certificates of deposit 576,519,000 569,883,000 — 569,883,000 — Total certificates of deposit 867,671,000 845,541,000 — 845,541,000 — Repurchase agreements 64,409,000 64,289,000 — 64,289,000 — Federal Home Loan Bank advances 39,074,000 39,064,000 — 39,064,000 — Total borrowed funds 103,483,000 103,353,000 — 103,353,000 — The carrying amount and estimated fair values for financial instruments as of September 30, 2022 were as follows: Carrying value Estimated fair value Level 1 Level 2 Level 3 Financial assets Securities to be held to maturity $ 381,906,000 $ 313,796,000 $ — $ 313,796,000 $ — Loans (net of allowance for loan losses) Commercial Real estate 632,385,000 615,560,000 — — 615,560,000 Construction 127,765,000 124,366,000 — — 124,366,000 Other 306,692,000 304,024,000 — 5,000 304,019,000 Municipal 48,521,000 46,475,000 — — 46,475,000 Residential Term 592,143,000 543,378,000 — — 543,378,000 Construction 41,440,000 37,263,000 — — 37,263,000 Home equity line of credit 72,812,000 76,287,000 — — 76,287,000 Consumer 19,830,000 18,172,000 — — 18,172,000 Total loans 1,841,588,000 1,765,525,000 — 5,000 1,765,520,000 Mortgage servicing rights 2,594,000 3,789,000 — 3,789,000 — Financial liabilities Local certificates of deposit $ 252,211,000 $ 239,377,000 $ — $ 239,377,000 $ — National certificates of deposit 533,965,000 525,169,000 — 525,169,000 — Total certificates of deposit 786,176,000 764,546,000 — 764,546,000 — Repurchase agreements 68,258,000 59,208,000 — 59,208,000 — Federal Home Loan Bank advances 50,085,000 50,071,000 — 50,071,000 — Total borrowed funds 118,343,000 109,279,000 — 109,279,000 —

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Value, AFS (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 353,140	$ 341,113	$ 343,599
Unrealized Gains	2	57	4
Unrealized Losses	(68,170)	(56,661)	(60,335)
Fair Value (Estimated)	284,972	284,509	283,268
U.S. Treasury & Agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	45,851	26,025	26,023
Unrealized Gains	0	0	0
Unrealized Losses	(7,599)	(6,878)	(6,879)
Fair Value (Estimated)	38,252	19,147	19,144
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	263,775	271,068	273,215
Unrealized Gains	1	55	4
Unrealized Losses	(50,930)	(42,447)	(44,041)
Fair Value (Estimated)	212,846	228,676	229,178
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	40,417	40,472	40,489
Unrealized Gains	0	2	0
Unrealized Losses	(9,637)	(7,283)	(9,383)
Fair Value (Estimated)	30,780	33,191	31,106
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,097	3,548	3,872
Unrealized Gains	1	0	0
Unrealized Losses	(4)	(53)	(32)
Fair Value (Estimated)	$ 3,094	$ 3,495	$ 3,840

Investment Securities - Summa_2

Investment Securities - Summary of Amortized Cost and Estimated Fair Value, HTM and Restricted Equity Securities (Details) - USD ($)		Sep. 30, 2023		Dec. 31, 2022	Sep. 30, 2022
Securities to be held to maturity
Amortized Cost		$ 387,806,000		$ 393,896,000	$ 381,906,000
Unrealized Gains		20,000		200,000	86,000
Unrealized Losses		(75,962,000)		(55,085,000)	(68,196,000)
Fair Value (Estimated)		311,864,000		339,011,000	313,796,000
Less allowance for credit losses		(432,000)	[1]	0	0
Net securities to be held to maturity	[1]	387,374,000		393,896,000	381,906,000
Restricted equity securities
Federal Home Loan Bank Stock		2,823,000		2,846,000	3,477,000
Federal Reserve Bank Stock		1,037,000		1,037,000	1,037,000
Restricted equity securities		3,860,000		3,883,000	4,514,000
U.S. Treasury & Agency securities
Securities to be held to maturity
Amortized Cost		40,100,000		40,100,000	38,100,000
Unrealized Gains		0		4,000	0
Unrealized Losses		(11,996,000)		(10,477,000)	(10,428,000)
Fair Value (Estimated)		28,104,000		29,627,000	27,672,000
Less allowance for credit losses		0
Mortgage-backed securities
Securities to be held to maturity
Amortized Cost		57,224,000		60,497,000	56,423,000
Unrealized Gains		4,000		42,000	48,000
Unrealized Losses		(13,336,000)		(11,392,000)	(11,784,000)
Fair Value (Estimated)		43,892,000		49,147,000	44,687,000
State and political subdivisions
Securities to be held to maturity
Amortized Cost		255,732,000		258,549,000	257,633,000
Unrealized Gains		16,000		154,000	38,000
Unrealized Losses		(46,807,000)		(30,733,000)	(43,899,000)
Fair Value (Estimated)		208,941,000		227,970,000	213,772,000
Less allowance for credit losses		(212,000)		0
Corporate securities
Securities to be held to maturity
Amortized Cost		34,750,000		34,750,000	29,750,000
Unrealized Gains		0		0	0
Unrealized Losses		(3,823,000)		(2,483,000)	(2,085,000)
Fair Value (Estimated)		30,927,000		32,267,000	$ 27,665,000
Less allowance for credit losses		$ (220,000)		$ 0
[1]December 31, 2022 and September 30, 2022 had no allowance for credit losses

Investment Securities - Narrati

Investment Securities - Narrative (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) security	Dec. 31, 2022 USD ($) security	Sep. 30, 2023 USD ($) bond company state security		Sep. 30, 2014 USD ($)
Debt Securities, Available-for-sale [Line Items]
AFS allowance			$ 0
HTM allowance for credit losses	$ 0	$ 0	432,000	[1]
Amortized cost	$ 381,906,000	$ 393,896,000	$ 387,806,000
Number of securities temporarily impaired (security) | security	912	869	941
Number of securities temporarily impaired for twelve months or more (security) | security	138	300
Period of temporary impairment	12 months	12 months
Financing receivable, threshold period past due			30 days
Debt securities, held-to-maturity, nonaccrual			$ 0
Amortized cost of securities transferred					$ 89,780,000
Fair value of securities transferred					89,757,000
Net unrealized loss, net of taxes on transferred securities					$ 15,000
Unamortized balance of net unrealized losses transferred	$ 67,000	$ 64,000	$ 58,000
Number of states | state			6
FHLB stock investment	3,477,000	2,846,000	$ 2,823,000
Federal reserve bank stock	1,037,000	1,037,000	1,037,000
Impairment losses			0
Other equity securities
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral	343,677,000	350,411,000	383,946,000
Agency and mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses			$ 0
Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Number of private activity bonds | bond			2
Amortized cost			$ 19,734,000
Corporate securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses		0	220,000
Amortized cost	29,750,000	34,750,000	$ 34,750,000
Number of individual companies | company			14
U.S. Treasury & Agency securities
Debt Securities, Available-for-sale [Line Items]
HTM allowance for credit losses			$ 0
Amortized cost	$ 38,100,000	$ 40,100,000	$ 40,100,000
[1]December 31, 2022 and September 30, 2022 had no allowance for credit losses

Investment Securities - Summa_3

Investment Securities - Summary of Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Securities available for sale
Amortized Cost, Due in 1 year or less	$ 19,819	$ 0	$ 4
Fair Value (Estimated), Due in 1 year or less	19,819	0	4
Amortized Cost, Due in 1 to 5 years	3,640	3,609	3,640
Fair Value (Estimated), Due in 1 to 5 years	3,468	3,409	3,427
Amortized Cost, Due in 5 to 10 years	28,082	18,591	18,064
Fair Value (Estimated), Due in 5 to 10 years	23,360	15,203	14,436
Amortized Cost, Due after 10 years	301,599	318,913	321,891
Fair Value (Estimated), Due after 10 years	238,325	265,897	265,401
Amortized Cost	353,140	341,113	343,599
Fair Value (Estimated)	284,972	284,509	283,268
Securities to be held to maturity
Amortized Cost, Due in 1 year or less	2,158	1,787	1,346
Fair Value (Estimated), Due in 1 year or less	2,151	1,782	1,343
Amortized Cost, Due in 1 to 5 years	15,780	14,998	15,235
Fair Value (Estimated), Due in 1 to 5 years	14,771	14,480	14,644
Amortized Cost, Due in 5 to 10 years	92,565	86,833	75,492
Fair Value (Estimated), Due in 5 to 10 years	81,812	81,443	68,704
Amortized Cost, Due after 10 years	277,303	290,278	289,833
Fair Value (Estimated), Due after 10 years	213,130	241,306	229,105
Amortized Cost	387,806	393,896	381,906
Securities to be held to maturity, Fair Value (Estimated)	$ 311,864	$ 339,011	$ 313,796

Investment Securities - Securit

Investment Securities - Securities Gains and 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]
Proceeds from sales of securities	$ 0	$ 1,301	$ 0	$ 1,301
Gross realized gains	0	6	0	8
Gross realized losses	0	(1)	0	(1)
Net gain (loss)	0	5	0	7
Related income taxes	$ 0	$ 1	$ 0	$ 1

Investment Securities - Secur_2

Investment Securities - Securities Temporarily Impaired (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	$ 96,442	$ 251,182	$ 337,576
Unrealized Losses (Less than 12 months)	(7,156)	(23,126)	(61,255)
Fair Value (Estimated) (12 months or more)	453,732	310,159	223,562
Unrealized Losses (12 months or more)	(136,976)	(88,620)	(67,276)
Fair Value (Estimated)	550,174	561,341	561,138
Unrealized Losses	(144,132)	(111,746)	(128,531)
U.S. Treasury & Agency securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	11,842	4,804	7,364
Unrealized Losses (Less than 12 months)	(40)	(675)	(1,264)
Fair Value (Estimated) (12 months or more)	44,577	41,965	39,452
Unrealized Losses (12 months or more)	(19,555)	(16,680)	(16,043)
Fair Value (Estimated)	56,419	46,769	46,816
Unrealized Losses	(19,595)	(17,355)	(17,307)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	18,017	73,509	109,041
Unrealized Losses (Less than 12 months)	(441)	(6,486)	(13,868)
Fair Value (Estimated) (12 months or more)	238,150	197,102	162,979
Unrealized Losses (12 months or more)	(63,825)	(47,353)	(41,957)
Fair Value (Estimated)	256,167	270,611	272,020
Unrealized Losses	(64,266)	(53,839)	(55,825)
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	66,583	149,517	197,145
Unrealized Losses (Less than 12 months)	(6,675)	(13,769)	(44,277)
Fair Value (Estimated) (12 months or more)	147,818	67,932	17,902
Unrealized Losses (12 months or more)	(49,769)	(24,247)	(9,005)
Fair Value (Estimated)	214,401	217,449	215,047
Unrealized Losses	(56,444)	(38,016)	(53,282)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	0	3,495	3,840
Unrealized Losses (Less than 12 months)	0	(53)	(32)
Fair Value (Estimated) (12 months or more)	1,510	0	0
Unrealized Losses (12 months or more)	(4)	0	0
Fair Value (Estimated)	1,510	3,495	3,840
Unrealized Losses	(4)	(53)	(32)
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Fair Value (Estimated) (Less than 12 months)	0	19,857	20,186
Unrealized Losses (Less than 12 months)	0	(2,143)	(1,814)
Fair Value (Estimated) (12 months or more)	21,677	3,160	3,229
Unrealized Losses (12 months or more)	(3,823)	(340)	(271)
Fair Value (Estimated)	21,677	23,017	23,415
Unrealized Losses	$ (3,823)	$ (2,483)	$ (2,085)

Investment Securities - Debt Se

Investment Securities - Debt Securities, Held-to-Maturity, Allowance for Credit Loss (Details)	9 Months Ended
	Sep. 30, 2023 USD ($)
Allowance for credit losses:
Beginning balance	$ 0
Credit loss expense (reduction)	(6,000)
Securities charged-off	0
Recoveries	0
Total ending allowance balance	432,000	[1]
Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Beginning balance	438,000
State and political subdivisions
Allowance for credit losses:
Beginning balance	0
Credit loss expense (reduction)	(17,000)
Securities charged-off	0
Recoveries	0
Total ending allowance balance	212,000
State and political subdivisions | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Beginning balance	229,000
Corporate securities
Allowance for credit losses:
Beginning balance	0
Credit loss expense (reduction)	11,000
Securities charged-off	0
Recoveries	0
Total ending allowance balance	220,000
Corporate securities | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Beginning balance	$ 209,000
[1]December 31, 2022 and September 30, 2022 had no allowance for credit losses

Loans - Loan Portfolio (Details

Loans - Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,079,860	$ 1,914,674	$ 1,857,975
Percentage of loans receivable, by type	100%	100%	100%
Commercial | Real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 299,943	$ 256,623	$ 251,410
Percentage of loans receivable, by type	14.40%	13.40%	13.60%
Commercial | Real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 397,024	$ 363,660	$ 315,514
Percentage of loans receivable, by type	19.10%	19%	17%
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 72,424	$ 93,907	$ 129,036
Percentage of loans receivable, by type	3.50%	4.90%	6.90%
Commercial | C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 350,596	$ 319,359	$ 310,110
Percentage of loans receivable, by type	16.90%	16.70%	16.70%
Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 91,041	$ 79,057	$ 71,784
Percentage of loans receivable, by type	4.40%	4.10%	3.90%
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 58,447	$ 40,619	$ 48,702
Percentage of loans receivable, by type	2.80%	2.10%	2.60%
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 28,986	$ 49,907	$ 41,631
Percentage of loans receivable, by type	1.40%	2.60%	2.20%
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 660,049	$ 597,404	$ 581,066
Percentage of loans receivable, by type	31.70%	31.20%	31.30%
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 101,980	$ 93,075	$ 87,903
Percentage of loans receivable, by type	4.90%	4.90%	4.70%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 19,370	$ 21,063	$ 20,819
Percentage of loans receivable, by type	0.90%	1.10%	1.10%

Loans - Narrative (Details)

Loans - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) loan	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred loan costs	$ 10,132,000	$ 11,213,000	$ 9,978,000
Loans used to collateralize borrowings from the Federal Home Loan Bank of Boston	475,233,000	525,904,000	464,069,000
Loans	$ 1,914,674,000	$ 2,079,860,000	$ 1,857,975,000
Loans sold by bank | loan			41
Ledger balances carried by loans			$ 5,200,000
Number of loans | loan	29
TDR recorded investment	$ 4,744,000
Number of loans | loan	1
TDR recorded investment more than 30 days past due	$ 97,000
Number of days past due	30 days
Number of loans placed on TDR status | loan	1
Number of TDR loans involved in bankruptcy (loan) | loan	4
Loans classified as TDRs that are involved in bankruptcy	$ 550,000
Number of loans classified as TDRs that were on non-accrual status | loan	5
Loans classified as TDRs that were on non-accrual status	$ 339,000
Loans classified as TDRs that are involved in foreclosure	$ 0
Number of mortgage loans in the process of foreclosure | loan	2	4	2
Mortgage loans in the process of foreclosure	$ 166,000	$ 459,000	$ 166,000
Interest rate swap agreements | Designated as Hedging Instrument
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan adjustments	689,000	2,489,000	633,000
Interest rate swap agreements | Fair Value Hedging | Designated as Hedging Instrument
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan adjustments	0	705,000	0
Asset Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 338,636,000	$ 332,657,000	$ 327,551,000

Loans - Past-due Status of Loan

Loans - Past-due Status of Loans by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 2,079,860	$ 1,914,674	$ 1,857,975
90+ Days & Accruing	11	241	0
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	677	625	867
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	314	121	154
90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	997	713	440
All Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,988	1,459	1,461
Current
Financing Receivable, Past Due [Line Items]
Loans	2,077,872	1,913,215	1,856,514
Commercial | Real estate owner occupied
Financing Receivable, Past Due [Line Items]
Loans	299,943	256,623	251,410
90+ Days & Accruing	0
Commercial | Real estate owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate owner occupied | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate owner occupied | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	299,943
Commercial | Real Estate
Financing Receivable, Past Due [Line Items]
Loans		699,340	638,708
90+ Days & Accruing		0	0
Commercial | Real Estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans		0	0
Commercial | Real Estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans		3	4
Commercial | Real Estate | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans		190	191
Commercial | Real Estate | All Past Due
Financing Receivable, Past Due [Line Items]
Loans		193	195
Commercial | Real Estate | Current
Financing Receivable, Past Due [Line Items]
Loans		699,147	638,513
Commercial | Real estate non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	397,024	363,660	315,514
90+ Days & Accruing	0
Commercial | Real estate non-owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate non-owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate non-owner occupied | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate non-owner occupied | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Real estate non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	397,024
Commercial | Construction
Financing Receivable, Past Due [Line Items]
Loans	72,424	93,907	129,036
90+ Days & Accruing	0	0	0
Commercial | Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Commercial | Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	7	0	0
Commercial | Construction | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	8	0	0
Commercial | Construction | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	15	0	0
Commercial | Construction | Current
Financing Receivable, Past Due [Line Items]
Loans	72,409	93,907	129,036
Commercial | C&I
Financing Receivable, Past Due [Line Items]
Loans	350,596	319,359	310,110
90+ Days & Accruing	0
Commercial | C&I | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	349
Commercial | C&I | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	100
Commercial | C&I | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	221
Commercial | C&I | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	670
Commercial | C&I | Current
Financing Receivable, Past Due [Line Items]
Loans	349,926
Commercial |    Other
Financing Receivable, Past Due [Line Items]
Loans		319,359	310,110
90+ Days & Accruing		34	0
Commercial |    Other | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans		118	172
Commercial |    Other | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans		23	16
Commercial |    Other | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans		85	83
Commercial |    Other | All Past Due
Financing Receivable, Past Due [Line Items]
Loans		226	271
Commercial |    Other | Current
Financing Receivable, Past Due [Line Items]
Loans		319,133	309,839
Commercial | Multifamily
Financing Receivable, Past Due [Line Items]
Loans	91,041	79,057	71,784
90+ Days & Accruing	0
Commercial | Multifamily | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Multifamily | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Multifamily | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Multifamily | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | Multifamily | Current
Financing Receivable, Past Due [Line Items]
Loans	91,041
Municipal
Financing Receivable, Past Due [Line Items]
Loans	58,447	40,619	48,702
90+ Days & Accruing	0	0	0
Municipal | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Municipal | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Municipal | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Municipal | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Municipal | Current
Financing Receivable, Past Due [Line Items]
Loans	58,447	40,619	48,702
Residential | Construction
Financing Receivable, Past Due [Line Items]
Loans	28,986	49,907	41,631
90+ Days & Accruing	0	0	0
Residential | Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Residential | Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	62	0	0
Residential | Construction | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0	0
Residential | Construction | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	62	0	0
Residential | Construction | Current
Financing Receivable, Past Due [Line Items]
Loans	28,924	49,907	41,631
Residential | Term
Financing Receivable, Past Due [Line Items]
Loans	660,049	597,404	581,066
90+ Days & Accruing	0	118	0
Residential | Term | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	39	135	79
Residential | Term | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	106	33	77
Residential | Term | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	578	284	166
Residential | Term | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	723	452	322
Residential | Term | Current
Financing Receivable, Past Due [Line Items]
Loans	659,326	596,952	580,744
Home Equity
Financing Receivable, Past Due [Line Items]
Loans	101,980	93,075	87,903
90+ Days & Accruing	0	86	0
Home Equity | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	79	241	473
Home Equity | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	29	29
Home Equity | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	179	151	0
Home Equity | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	258	421	502
Home Equity | Current
Financing Receivable, Past Due [Line Items]
Loans	101,722	92,654	87,401
Consumer
Financing Receivable, Past Due [Line Items]
Loans	19,370	21,063	20,819
90+ Days & Accruing	11	3	0
Consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	210	131	143
Consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	39	33	28
Consumer | 90+ Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	11	3	0
Consumer | All Past Due
Financing Receivable, Past Due [Line Items]
Loans	260	167	171
Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	$ 19,110	$ 20,896	$ 20,648

Loans - Nonaccrual Loans (Detai

Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	$ 667
Nonaccrual with no Allowance for Credit Loss	1,886
Nonaccrual with Allowance for Credit Loss	2,553	$ 1,755	$ 1,860
Commercial | Real estate owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	0
Nonaccrual with Allowance for Credit Loss	0	193	195
Commercial | Real estate non-owner occupied
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	0
Nonaccrual with Allowance for Credit Loss	0	0	0
Commercial | Construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	29
Nonaccrual with Allowance for Credit Loss	29	23	25
Commercial | C&I
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	363
Nonaccrual with no Allowance for Credit Loss	351
Nonaccrual with Allowance for Credit Loss	714	663	756
Commercial | Multifamily
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	0
Nonaccrual with Allowance for Credit Loss	0	0	0
Municipal
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	0
Nonaccrual with Allowance for Credit Loss	0	0	0
Residential | Construction
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	0
Nonaccrual with Allowance for Credit Loss	0	0	0
Residential | Term
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	304
Nonaccrual with no Allowance for Credit Loss	1,016
Nonaccrual with Allowance for Credit Loss	1,320	572	637
Home Equity
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	490
Nonaccrual with Allowance for Credit Loss	490	304	247
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with Allowance for Credit Loss	0
Nonaccrual with no Allowance for Credit Loss	0
Nonaccrual with Allowance for Credit Loss	$ 0	$ 0	$ 0

Loans - Amortized Cost Basis of

Loans - Amortized Cost Basis of Collateral-Dependent Loans (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	$ 0
Commercial Real Estate | Commercial | Real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Commercial | Real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Commercial | C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Commercial | Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Commercial Real Estate | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	687
Residential Real Estate | Commercial | Real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Commercial | Real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Commercial | C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Commercial | Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	687
Residential Real Estate | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Residential Real Estate | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	687
Collateral Pledged | Commercial | Real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Commercial | Real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Commercial | C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Commercial | Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	687
Collateral Pledged | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	0
Collateral Pledged | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, individually evaluated for impairment	$ 0

Loans - Individually Analyzed L

Loans - Individually Analyzed Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Recorded Investment
Recorded investment, with no related allowance	$ 384	$ 3,878	$ 384	$ 3,878	$ 4,359
Recorded investment, with related allowance	929	2,477	929	2,477	1,801
Recorded Investment	1,313	6,355	1,313	6,355	6,160
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	411	4,511	411	4,511	4,942
Unpaid principal balance with related allowance	1,029	2,575	1,029	2,575	1,906
Unpaid Principal Balance	1,440	7,086	1,440	7,086	6,848
Related Allowance	266	420	266	420	398
Average Recorded Investment
Average recorded investment, with no related allowance	384	6,659	2,124	7,635	6,732
Average recorded investment, with related allowance	1,063	2,724	1,389	2,993	2,804
Average Recorded Investment	1,447	9,383	3,513	10,628	9,536
Recognized Interest Income
Recognized interest income, with no related allowance	(4)	7	15	92	154
Recognized interest income, with related allowance	(2)	25	10	61	50
Recognized Interest Income	(6)	32	25	153	204
Commercial | Real estate owner occupied
Recorded Investment
Recorded investment, with no related allowance	0		0
Recorded investment, with related allowance	0		0
Recorded Investment	0		0
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0		0
Unpaid principal balance with related allowance	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Investment
Average recorded investment, with no related allowance	0		143
Average recorded investment, with related allowance	0		0
Average Recorded Investment	0		143
Recognized Interest Income
Recognized interest income, with no related allowance	0		0
Recognized interest income, with related allowance	0		0
Recognized Interest Income	0		0
Commercial | Real Estate
Recorded Investment
Recorded investment, with no related allowance		1,295		1,295	1,236
Recorded investment, with related allowance		0		0	0
Recorded Investment		1,295		1,295	1,236
Unpaid Principal Balance
Unpaid principal balance, with no related allowance		1,607		1,607	1,532
Unpaid principal balance with related allowance		0		0	0
Unpaid Principal Balance		1,607		1,607	1,532
Related Allowance		0		0	0
Average Recorded Investment
Average recorded investment, with no related allowance		1,314		1,497	1,440
Average recorded investment, with related allowance		0		14	11
Average Recorded Investment		1,314		1,511	1,451
Recognized Interest Income
Recognized interest income, with no related allowance		14		42	50
Recognized interest income, with related allowance		0		0	0
Recognized Interest Income		14		42	50
Commercial | Real estate non-owner occupied
Recorded Investment
Recorded investment, with no related allowance	0		0
Recorded investment, with related allowance	0		0
Recorded Investment	0		0
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0		0
Unpaid principal balance with related allowance	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Investment
Average recorded investment, with no related allowance	0		537
Average recorded investment, with related allowance	0		0
Average Recorded Investment	0		537
Recognized Interest Income
Recognized interest income, with no related allowance	(12)		0
Recognized interest income, with related allowance	0		0
Recognized Interest Income	(12)		0
Commercial | Construction
Recorded Investment
Recorded investment, with no related allowance	0	25	0	25	685
Recorded investment, with related allowance	0	661	0	661	0
Recorded Investment	0	686	0	686	685
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0	27	0	27	687
Unpaid principal balance with related allowance	0	661	0	661	0
Unpaid Principal Balance	0	688	0	688	687
Related Allowance	0	6	0	6	0
Average Recorded Investment
Average recorded investment, with no related allowance	0	25	157	26	81
Average recorded investment, with related allowance	0	661	0	661	606
Average Recorded Investment	0	686	157	687	687
Recognized Interest Income
Recognized interest income, with no related allowance	0	0	0	0	35
Recognized interest income, with related allowance	0	16	0	27	0
Recognized Interest Income	0	16	0	27	35
Commercial | C&I
Recorded Investment
Recorded investment, with no related allowance	0		0
Recorded investment, with related allowance	363		363
Recorded Investment	363		363
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0		0
Unpaid principal balance with related allowance	456		456
Unpaid Principal Balance	456		456
Related Allowance	225		225
Average Recorded Investment
Average recorded investment, with no related allowance	0		72
Average recorded investment, with related allowance	366		502
Average Recorded Investment	366		574
Recognized Interest Income
Recognized interest income, with no related allowance	0		0
Recognized interest income, with related allowance	0		0
Recognized Interest Income	0		0
Commercial |    Other
Recorded Investment
Recorded investment, with no related allowance		399		399	301
Recorded investment, with related allowance		552		552	545
Recorded Investment		951		951	846
Unpaid Principal Balance
Unpaid principal balance, with no related allowance		459		459	348
Unpaid principal balance with related allowance		647		647	647
Unpaid Principal Balance		1,106		1,106	995
Related Allowance		315		315	298
Average Recorded Investment
Average recorded investment, with no related allowance		405		432	408
Average recorded investment, with related allowance		679		745	693
Average Recorded Investment		1,084		1,177	1,101
Recognized Interest Income
Recognized interest income, with no related allowance		2		10	13
Recognized interest income, with related allowance		0		0	0
Recognized Interest Income		2		10	13
Commercial | Multifamily
Recorded Investment
Recorded investment, with no related allowance	0		0
Recorded investment, with related allowance	0		0
Recorded Investment	0		0
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0		0
Unpaid principal balance with related allowance	0		0
Unpaid Principal Balance	0		0
Related Allowance	0		0
Average Recorded Investment
Average recorded investment, with no related allowance	0		0
Average recorded investment, with related allowance	0		0
Average Recorded Investment	0		0
Recognized Interest Income
Recognized interest income, with no related allowance	0		0
Recognized interest income, with related allowance	0		0
Recognized Interest Income	0		0
Municipal
Recorded Investment
Recorded investment, with no related allowance	0	0	0	0	0
Recorded investment, with related allowance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0	0	0	0	0
Unpaid principal balance with related allowance	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Investment
Average recorded investment, with no related allowance	0	0	0	0	0
Average recorded investment, with related allowance	0	0	0	0	0
Average Recorded Investment	0	0	0	0	0
Recognized Interest Income
Recognized interest income, with no related allowance	0	0	0	0	0
Recognized interest income, with related allowance	0	0	0	0	0
Recognized Interest Income	0	0	0	0	0
Residential | Construction
Recorded Investment
Recorded investment, with no related allowance	0	0	0	0	0
Recorded investment, with related allowance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0	0	0	0	0
Unpaid principal balance with related allowance	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Investment
Average recorded investment, with no related allowance	0	0	0	0	0
Average recorded investment, with related allowance	0	0	0	0	0
Average Recorded Investment	0	0	0	0	0
Recognized Interest Income
Recognized interest income, with no related allowance	0	0	0	0	0
Recognized interest income, with related allowance	0	0	0	0	0
Recognized Interest Income	0	0	0	0	0
Residential | Term
Recorded Investment
Recorded investment, with no related allowance	384	1,912	384	1,912	1,833
Recorded investment, with related allowance	566	1,264	566	1,264	1,256
Recorded Investment	950	3,176	950	3,176	3,089
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	411	2,139	411	2,139	2,035
Unpaid principal balance with related allowance	573	1,267	573	1,267	1,259
Unpaid Principal Balance	984	3,406	984	3,406	3,294
Related Allowance	41	99	41	99	100
Average Recorded Investment
Average recorded investment, with no related allowance	384	4,666	977	5,380	4,507
Average recorded investment, with related allowance	697	1,384	878	1,562	1,486
Average Recorded Investment	1,081	6,050	1,855	6,942	5,993
Recognized Interest Income
Recognized interest income, with no related allowance	8	(9)	15	40	56
Recognized interest income, with related allowance	(2)	9	10	34	50
Recognized Interest Income	6	0	25	74	106
Home Equity
Recorded Investment
Recorded investment, with no related allowance	0	247	0	247	304
Recorded investment, with related allowance	0	0	0	0	0
Recorded Investment	0	247	0	247	304
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0	279	0	279	340
Unpaid principal balance with related allowance	0	0	0	0	0
Unpaid Principal Balance	0	279	0	279	340
Related Allowance	0	0	0	0	0
Average Recorded Investment
Average recorded investment, with no related allowance	0	249	238	299	295
Average recorded investment, with related allowance	0	0	9	11	8
Average Recorded Investment	0	249	247	310	303
Recognized Interest Income
Recognized interest income, with no related allowance	0	0	0	0	0
Recognized interest income, with related allowance	0	0	0	0	0
Recognized Interest Income	0	0	0	0	0
Consumer
Recorded Investment
Recorded investment, with no related allowance	0	0	0	0	0
Recorded investment, with related allowance	0	0	0	0	0
Recorded Investment	0	0	0	0	0
Unpaid Principal Balance
Unpaid principal balance, with no related allowance	0	0	0	0	0
Unpaid principal balance with related allowance	0	0	0	0	0
Unpaid Principal Balance	0	0	0	0	0
Related Allowance	0	0	0	0	0
Average Recorded Investment
Average recorded investment, with no related allowance	0	0	0	1	1
Average recorded investment, with related allowance	0	0	0	0	0
Average Recorded Investment	0	0	0	1	1
Recognized Interest Income
Recognized interest income, with no related allowance	0	0	0	0	0
Recognized interest income, with related allowance	0	0	0	0	0
Recognized Interest Income	$ 0	$ 0	$ 0	$ 0	$ 0

Loans - Loan Modifications (Det

Loans - Loan Modifications (Details) - Commercial $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 723
30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	40
60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 523
% of Total Class of Financing Receivable	0.03%
Real estate owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 503
Real estate owner occupied | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
Real estate owner occupied | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
Real estate owner occupied | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
Real estate owner occupied | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 504
% of Total Class of Financing Receivable	0.17%
C&I | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 220
C&I | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	40
C&I | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
C&I | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	0
C&I | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized Cost Basis	$ 19
% of Total Class of Financing Receivable	0.01%

Loans - TDR's by Class and Spec

Loans - TDR's by Class and Specific Reserves (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	29
Balance	$ 4,744
Specific Reserves	$ 181
Commercial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	5
Balance	$ 1,044
Specific Reserves	$ 0
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1
Balance	$ 661
Specific Reserves	$ 0
Commercial |    Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	3
Balance	$ 361
Specific Reserves	$ 81
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	20
Balance	$ 2,678
Specific Reserves	$ 100
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0

Loans - TDRs by Class and Assoc

Loans - TDRs by Class and Associated Specific Reserves (Details) $ in Thousands	Dec. 31, 2022 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1
Balance	$ 97
Specific Reserves	$ 0
Commercial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Commercial |    Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1
Balance	$ 97
Specific Reserves	$ 0
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	0
Balance	$ 0
Specific Reserves	$ 0

Loans - Pre-Modification and Po

Loans - Pre-Modification and Post-Modification Outstanding Recorded Investment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1
Pre-Modification Outstanding Recorded Investment	$ 38
Post-Modification Outstanding Recorded Investment	38
Specific Reserves	$ 0
Commercial | Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0
Commercial | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0
Commercial |    Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0
Municipal
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0
Residential | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0
Residential | Term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1
Pre-Modification Outstanding Recorded Investment	$ 38
Post-Modification Outstanding Recorded Investment	38
Specific Reserves	$ 0
Home Equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Specific Reserves	$ 0

Allowance for Credit Losses - N

Allowance for Credit Losses - Narrative (Details)	9 Months Ended
	Sep. 30, 2023 USD ($) Unit loan_class	Jun. 30, 2023 USD ($)	Jan. 01, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 23,322,000	$ 23,465,000		$ 16,723,000	$ 16,387,000	$ 16,201,000	$ 15,521,000
Number of loan classes | loan_class	10
Loan-to-value percent, commercial real estate	80%
Construction loans, percent of capital	37.30%
Construction loans, maximum percent of capital	100%
Construction loans and non-owner-occupied commercial real estate loans, percent of capital	215.50%
Construction loans and non-owner-occupied commercial real estate loans, maximum percent of capital	300%
Allowance for loan losses as a percent of total loans	1.12%			0.87%	0.88%
Outstanding loans and commitments subject by independent consulting firm	60%
Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			$ 6,210,000	$ 6,210,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of claims under review by management	$ 750,000
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 1,602,000	1,469,000		821,000	$ 1,121,000	1,151,000	746,000
Loan maturities	2 years
Commercial | Construction | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				943,000
Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 1,277,000	1,312,000		0
Number of units | Unit	5
Commercial | Multifamily | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				1,184,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan maturities	30 years
Loan to value ratio	0.80
Delinquent period before residential loans are placed on non-accrual status	90 days
Delinquent period for loans charged off	180 days
Delinquent period for loans charged off after receipt of notification	60 days
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 576,000	609,000		199,000	168,000	191,000	148,000
Loan maturities	1 year
Residential | Construction | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				735,000
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 617,000	635,000		1,029,000	993,000	966,000	925,000
Loan maturities	300 months
Loan to value ratio	0.80
Home Equity | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				(456,000)
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 251,000	$ 278,000		1,062,000	$ 872,000	$ 866,000	$ 833,000
Delinquent period before consumer loans are charged off	120 days
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				$ (802,000)

Allowance for Credit Losses - F

Allowance for Credit Losses - Financing Receivable and Allowance Element by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 23,322	$ 23,465	$ 16,723	$ 16,387	$ 16,201	$ 15,521
Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	266		398	420
General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	19,739		2,028	1,891
Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3,317		12,619	12,139
Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			1,678	1,937
Commercial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,511	4,719	6,116	5,575	5,480	5,367
Commercial | Real Estate | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Commercial | Real Estate | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			974	867
Commercial | Real Estate | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			5,142	4,708
Commercial | Real Estate | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Commercial | Real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,511		6,116
Commercial | Real estate owner occupied | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0
Commercial | Real estate owner occupied | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3,731
Commercial | Real estate owner occupied | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	780
Commercial | Real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,429	4,492	0
Commercial | Real estate non-owner occupied | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0
Commercial | Real estate non-owner occupied | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3,855
Commercial | Real estate non-owner occupied | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	574
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,602	1,469	821	1,121	1,151	746
Commercial | Construction | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0		0	6
Commercial | Construction | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,445		131	173
Commercial | Construction | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	157		690	942
Commercial | Construction | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Commercial |    Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,797		3,097	3,014	2,948	2,830
Commercial |    Other | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	225		298	315
Commercial |    Other | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	3,909		446	420
Commercial |    Other | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	663		2,353	2,279
Commercial |    Other | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,277	1,312	0
Commercial | Multifamily | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0
Commercial | Multifamily | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	1,184
Commercial | Multifamily | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	93
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	376	399	162	160	157	157
Municipal | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0		0	0
Municipal | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	332		0	0
Municipal | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	44		162	160
Municipal | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Residential | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	576	609	199	168	191	148
Residential | Construction | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0		0	0
Residential | Construction | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	602		7	7
Residential | Construction | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(26)		192	161
Residential | Construction | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Residential | Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,886	4,831	2,559	2,547	2,592	2,733
Residential | Term | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	41		100	99
Residential | Term | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	4,020		83	102
Residential | Term | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	825		2,376	2,346
Residential | Term | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Home Equity Line of Credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	617	635	1,029	993	966	925
Home Equity Line of Credit | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0		0	0
Home Equity Line of Credit | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	442		101	106
Home Equity Line of Credit | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	175		928	887
Home Equity Line of Credit | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	251	278	1,062	872	866	833
Consumer | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	0		0	0
Consumer | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	219		286	216
Consumer | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	32		776	656
Consumer | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Unallocated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 0	$ 0	1,678	1,937	$ 1,850	$ 1,782
Unallocated | Specific Reserves on Loans Evaluated Individually
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Unallocated | General Reserves on Loans Based on Historical Loss Experience
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Unallocated | Reserves for Qualitative Factors
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			0	0
Unallocated | Unallocated Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses			$ 1,678	$ 1,937

Allowance for Credit Losses - O

Allowance for Credit Losses - Off-balance Sheet Credit Exposures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Allowance for credit losses:
Beginning balance			$ 100
Credit loss expense	$ (42)	$ 0	89	$ 0
Ending balance	$ 1,486		1,486
Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Beginning balance			$ 1,297

Allowance for Credit Losses - C

Allowance for Credit Losses - Credit Quality Risk Ratings by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	$ 2,079,860	$ 1,857,975	$ 2,079,860	$ 1,857,975	$ 1,914,674
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
Charge offs	86	260	208	619	758
Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	238,987		238,987
2022	467,901		467,901
2021	404,578		404,578
2020	244,494		244,494
2019	124,553		124,553
Prior	395,244		395,244
Revolving Loans Amortized Cost Basis	180,900		180,900
Revolving Loans Converted to Term	23,203		23,203
Total	2,079,860		2,079,860
Commercial | Real estate owner occupied
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	299,943	251,410	299,943	251,410	256,623
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			40
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs			40
Commercial | Real estate owner occupied | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	43,022		43,022
2022	75,590		75,590
2021	41,851		41,851
2020	28,387		28,387
2019	35,696		35,696
Prior	65,064		65,064
Revolving Loans Amortized Cost Basis	9,355		9,355
Revolving Loans Converted to Term	175		175
Total	299,140		299,140
Commercial | Real estate owner occupied | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Real estate owner occupied | Substandard (risk rating 7)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	283		283
2022	0		0
2021	0		0
2020	0		0
2019	503		503
Prior	17		17
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	803		803
Commercial | Real estate owner occupied | Doubtful (risk rating 8)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Real estate owner occupied | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	43,305		43,305
2022	75,590		75,590
2021	41,851		41,851
2020	28,387		28,387
2019	36,199		36,199
Prior	65,081		65,081
Revolving Loans Amortized Cost Basis	9,355		9,355
Revolving Loans Converted to Term	175		175
Total	299,943		299,943
Commercial | Real estate non-owner occupied
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	397,024	315,514	397,024	315,514	363,660
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0		0
Commercial | Real estate non-owner occupied | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	27,875		27,875
2022	71,474		71,474
2021	130,132		130,132
2020	49,160		49,160
2019	27,670		27,670
Prior	85,559		85,559
Revolving Loans Amortized Cost Basis	5,092		5,092
Revolving Loans Converted to Term	0		0
Total	396,962		396,962
Commercial | Real estate non-owner occupied | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Real estate non-owner occupied | Substandard (risk rating 7)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	62		62
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	62		62
Commercial | Real estate non-owner occupied | Doubtful (risk rating 8)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Real estate non-owner occupied | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	27,875		27,875
2022	71,474		71,474
2021	130,132		130,132
2020	49,160		49,160
2019	27,670		27,670
Prior	85,621		85,621
Revolving Loans Amortized Cost Basis	5,092		5,092
Revolving Loans Converted to Term	0		0
Total	397,024		397,024
Commercial | Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	72,424	129,036	72,424	129,036	93,907
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0	0	0	0	0
Commercial | Construction | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	16,892		16,892
2022	41,852		41,852
2021	8,506		8,506
2020	1,665		1,665
2019	1,039		1,039
Prior	2,470		2,470
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	72,424		72,424
Commercial | Construction | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Construction | Substandard (risk rating 7)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Construction | Doubtful (risk rating 8)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Construction | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	16,892		16,892
2022	41,852		41,852
2021	8,506		8,506
2020	1,665		1,665
2019	1,039		1,039
Prior	2,470		2,470
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	72,424		72,424
Commercial | C&I
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	350,596	310,110	350,596	310,110	319,359
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			16
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	16		16
Commercial | C&I | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	43,648		43,648
2022	66,873		66,873
2021	53,712		53,712
2020	37,052		37,052
2019	6,526		6,526
Prior	38,003		38,003
Revolving Loans Amortized Cost Basis	90,748		90,748
Revolving Loans Converted to Term	11,937		11,937
Total	348,499		348,499
Commercial | C&I | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	129		129
2021	268		268
2020	0		0
2019	0		0
Prior	8		8
Revolving Loans Amortized Cost Basis	400		400
Revolving Loans Converted to Term	0		0
Total	805		805
Commercial | C&I | Substandard (risk rating 7)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	94		94
2022	363		363
2021	35		35
2020	0		0
2019	188		188
Prior	545		545
Revolving Loans Amortized Cost Basis	67		67
Revolving Loans Converted to Term	0		0
Total	1,292		1,292
Commercial | C&I | Doubtful (risk rating 8)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | C&I | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	43,742		43,742
2022	67,365		67,365
2021	54,015		54,015
2020	37,052		37,052
2019	6,714		6,714
Prior	38,556		38,556
Revolving Loans Amortized Cost Basis	91,215		91,215
Revolving Loans Converted to Term	11,937		11,937
Total	350,596		350,596
Commercial | Multifamily
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	91,041	71,784	91,041	71,784	79,057
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0		0
Commercial | Multifamily | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	8,435		8,435
2022	32,082		32,082
2021	18,172		18,172
2020	16,103		16,103
2019	5,553		5,553
Prior	8,796		8,796
Revolving Loans Amortized Cost Basis	329		329
Revolving Loans Converted to Term	207		207
Total	89,677		89,677
Commercial | Multifamily | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	1,364		1,364
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	1,364		1,364
Commercial | Multifamily | Substandard (risk rating 7)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Multifamily | Doubtful (risk rating 8)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Commercial | Multifamily | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	8,435		8,435
2022	32,082		32,082
2021	19,536		19,536
2020	16,103		16,103
2019	5,553		5,553
Prior	8,796		8,796
Revolving Loans Amortized Cost Basis	329		329
Revolving Loans Converted to Term	207		207
Total	91,041		91,041
Municipal
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	58,447	48,702	58,447	48,702	40,619
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0	0	0	0	0
Municipal | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	24,527		24,527
2022	6,239		6,239
2021	4,121		4,121
2020	10,226		10,226
2019	5,270		5,270
Prior	8,064		8,064
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	58,447		58,447
Municipal | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Municipal | Substandard (risk rating 7)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Municipal | Doubtful (risk rating 8)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Municipal | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	24,527		24,527
2022	6,239		6,239
2021	4,121		4,121
2020	10,226		10,226
2019	5,270		5,270
Prior	8,064		8,064
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	58,447		58,447
Residential | Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	28,986	41,631	28,986	41,631	49,907
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0	0	0	0	0
Residential | Construction | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	15,966		15,966
2022	11,715		11,715
2021	0		0
2020	1,305		1,305
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	28,986		28,986
Residential | Construction | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Residential | Construction | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	15,966		15,966
2022	11,715		11,715
2021	0		0
2020	1,305		1,305
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	28,986		28,986
Residential | Term
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	660,049	581,066	660,049	581,066	597,404
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0	0	0	0	8
Residential | Term | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	47,019		47,019
2022	149,470		149,470
2021	143,048		143,048
2020	97,350		97,350
2019	40,621		40,621
Prior	179,788		179,788
Revolving Loans Amortized Cost Basis	1,301		1,301
Revolving Loans Converted to Term	132		132
Total	658,729		658,729
Residential | Term | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	304		304
2021	0		0
2020	81		81
2019	340		340
Prior	595		595
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	1,320		1,320
Residential | Term | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	47,019		47,019
2022	149,774		149,774
2021	143,048		143,048
2020	97,431		97,431
2019	40,961		40,961
Prior	180,383		180,383
Revolving Loans Amortized Cost Basis	1,301		1,301
Revolving Loans Converted to Term	132		132
Total	660,049		660,049
Home Equity
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	101,980	87,903	101,980	87,903	93,075
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	0	0	0	29	29
Home Equity | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	8,154		8,154
2022	9,472		9,472
2021	2,073		2,073
2020	1,214		1,214
2019	609		609
Prior	1,754		1,754
Revolving Loans Amortized Cost Basis	67,639		67,639
Revolving Loans Converted to Term	10,575		10,575
Total	101,490		101,490
Home Equity | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	115		115
Revolving Loans Amortized Cost Basis	198		198
Revolving Loans Converted to Term	177		177
Total	490		490
Home Equity | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	8,154		8,154
2022	9,472		9,472
2021	2,073		2,073
2020	1,214		1,214
2019	609		609
Prior	1,869		1,869
Revolving Loans Amortized Cost Basis	67,837		67,837
Revolving Loans Converted to Term	10,752		10,752
Total	101,980		101,980
Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Total	19,370	20,819	19,370	20,819	21,063
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery) [Abstract]
2023			5
2022			41
2021			30
2020			30
2019			7
Prior			39
Revolving Loans Amortized Cost Basis			0
Revolving Loans Converted to Term			0
Charge offs	69	$ 31	152	$ 318	$ 412
Consumer | Pass (risk rating 1-5)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	3,072		3,072
2022	2,338		2,338
2021	1,296		1,296
2020	1,951		1,951
2019	538		538
Prior	4,404		4,404
Revolving Loans Amortized Cost Basis	5,771		5,771
Revolving Loans Converted to Term	0		0
Total	19,370		19,370
Consumer | Special Mention (risk rating 6)
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	0		0
2022	0		0
2021	0		0
2020	0		0
2019	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term	0		0
Total	0		0
Consumer | Total loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	3,072		3,072
2022	2,338		2,338
2021	1,296		1,296
2020	1,951		1,951
2019	538		538
Prior	4,404		4,404
Revolving Loans Amortized Cost Basis	5,771		5,771
Revolving Loans Converted to Term	0		0
Total	$ 19,370		$ 19,370

Allowance for Credit Losses - A

Allowance for Credit Losses - Activity by Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 23,465	$ 16,201	$ 16,723	$ 15,521	$ 15,521
Charge offs	86	260	208	619	758
Recoveries	104	46	178	185	210
Provision (credit)	(161)	400	419	1,300	1,750
Ending balance	23,322	16,387	23,322	16,387	16,723
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			6,210
Ending balance					6,210
Commercial | Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Recoveries		(1)
Commercial | Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,719	5,480	6,116	5,367	5,367
Charge offs	1	0		0	0
Recoveries	2			16	20
Provision (credit)	(209)	96		192	729
Ending balance	4,511	5,575	4,511	5,575	6,116
Commercial | Real estate owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			6,116
Charge offs			40
Recoveries			2
Provision (credit)			119
Ending balance	4,511		4,511		6,116
Commercial | Real estate owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			(1,686)
Ending balance					(1,686)
Commercial | Real estate non-owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,492		0
Charge offs	0		0
Recoveries	0		75
Provision (credit)	(63)		39
Ending balance	4,429		4,429		0
Commercial | Real estate non-owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			4,315
Ending balance					4,315
Commercial | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,469	1,151	821	746	746
Charge offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (credit)	133	(30)	(162)	375	75
Ending balance	1,602	1,121	1,602	1,121	821
Commercial | Construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			943
Ending balance					943
Commercial | C&I
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,721		3,097
Charge offs	16		16
Recoveries	0		3
Provision (credit)	92		68
Ending balance	4,797		4,797		3,097
Commercial | C&I | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,645
Ending balance					1,645
Commercial |    Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		2,948	3,097	2,830	2,830
Charge offs		229		272	309
Recoveries		9		11	13
Provision (credit)		286		445	563
Ending balance	4,797	3,014	4,797	3,014	3,097
Commercial | Multifamily
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,312		0
Charge offs	0		0
Recoveries	0		0
Provision (credit)	(35)		93
Ending balance	1,277		1,277		0
Commercial | Multifamily | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,184
Ending balance					1,184
Municipal
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	399	157	162	157	157
Charge offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (credit)	(23)	3	82	3	5
Ending balance	376	160	376	160	162
Municipal | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			132
Ending balance					132
Residential | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	609	191	199	148	148
Charge offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (credit)	(33)	(23)	(358)	20	51
Ending balance	576	168	576	168	199
Residential | Construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			735
Ending balance					735
Residential | Term
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,831	2,592	2,559	2,733	2,733
Charge offs	0	0	0	0	8
Recoveries	4	16	10	27	29
Provision (credit)	51	(61)	439	(213)	(195)
Ending balance	4,886	2,547	4,886	2,547	2,559
Residential | Term | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,878
Ending balance					1,878
Home Equity Line of Credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	635	966	1,029	925	925
Charge offs	0	0	0	29	29
Recoveries	3	2	10	3	4
Provision (credit)	(21)	25	34	94	129
Ending balance	617	993	617	993	1,029
Home Equity Line of Credit | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			(456)
Ending balance					(456)
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	278	866	1,062	833	833
Charge offs	69	31	152	318	412
Recoveries	20	20	78	128	144
Provision (credit)	22	17	65	229	497
Ending balance	251	872	251	872	1,062
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			(802)
Ending balance					(802)
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	1,850	1,678	1,782	1,782
Charge offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (credit)	0	87	0	155	(104)
Ending balance	$ 0	$ 1,937	0	$ 1,937	1,678
Unallocated | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			$ (1,678)
Ending balance					$ (1,678)

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2020
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (in shares)	83,127
Total share based compensation cost	$ 2,402
Compensation expense recognized for restricted shares	607	$ 610
Unrecognized compensation costs	$ 1,069	$ 994
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance (in shares)			400,000
2020 Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants during the period (in shares)	98,810

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Restricted Stock Granted (Details) - 2010 and 2020 Equity Incentive Plan - Restricted Stock - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares	83,127
Remaining Term (In Years)	1 year 3 months 18 days
2021 | Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)			3 years
Shares			25,968
Remaining Term (In Years)			3 months 18 days
2022 | Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)		3 years
Shares		23,654
Remaining Term (In Years)		1 year 3 months 18 days
2022 | Two And Half Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)		2 years 6 months
Shares		1,250
Remaining Term (In Years)		1 year 3 months 18 days
2023 | Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)	3 years
Shares	27,559
Remaining Term (In Years)	2 years 3 months 18 days
2023 | Two Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)	2 years
Shares	2,946
Remaining Term (In Years)	1 year 3 months 18 days
2023 | One Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Term (In Years)	1 year
Shares	1,750
Remaining Term (In Years)	3 months 18 days

Common Stock (Details)

Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Class of Stock [Line Items]
Proceeds from sale of common stock	$ 199	$ 203	$ 608	$ 588
Capital Purchase Program
Class of Stock [Line Items]
Proceeds from sale of common stock			$ 608	$ 588

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income (Numerator)
Net income as reported	$ 7,474	$ 10,091	$ 22,839	$ 29,793
Basic EPS: Income available to common shareholders	7,474	10,091	22,839	29,793
Diluted EPS: Income available to common shareholders plus assumed conversions	$ 7,474	$ 10,091	$ 22,839	$ 29,793
Shares (Denominator)
Basic EPS: Income available to common shareholders (in shares)	11,003,987	10,934,492	10,993,406	10,927,920
Effect of dilutive securities: restricted stock (in shares)	83,146	100,899	84,089	98,651
Diluted EPS: Income available to common shareholders plus assumed conversions (in shares)	11,087,133	11,035,391	11,077,495	11,026,571
Basic EPS: Income available to common shareholders (usd per share)	$ 0.68	$ 0.92	$ 2.08	$ 2.73
Diluted EPS: Income available to common shareholders plus assumed conversions (usd per share)	$ 0.67	$ 0.91	$ 2.06	$ 2.70

Employee Benefit Plans - Narrat

Employee Benefit Plans - Narrative (Details)	9 Months Ended
	Sep. 30, 2023 USD ($) post_retirement_benefit_plan	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Retirement Benefits, Description [Abstract]
Defined contribution plan service period (in months)	3 months
Defined contribution plan employer maximum percentage match of annual salary based on employee contribution	3%
Defined contribution plan, employer matching contribution, percent of match	3%
Expense related to 401(k) plan	$ 826,000	$ 752,000
Unfunded, supplemental retirement benefits payable period	20 years
Pension expense	$ 57,000	231,000
Accrued pension liability	$ 2,735,000	$ 2,888,000	$ 2,893,000
Number of post-retirement benefit plans | post_retirement_benefit_plan	2
Post-retirement benefit plan health insurance subsidy range minimum per month per person	$ 40
Post-retirement benefit plan health insurance subsidy range maximum per month per person	$ 1,200
Discount rate	4.75%
Assumed health care cost trend rate	7%
Expected future benefit payments, current year	$ 88,000
Estimated plan expense	19,000
Effect of one percentage point increase on accumulated benefit obligation	100,000
Effect of one percentage point increase on interest cost	7,000
Effect of one percentage point increase on service cost	$ 1,000

Employee Benefit Plans - Accumu

Employee Benefit Plans - Accumulated Post-Retirement Benefit Obligation, Funded Status, and Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Change in benefit obligation
Benefit obligation at beginning of year			$ 1,050	$ 1,353
Interest cost	$ 4	$ 7	14	24
Benefits paid			(66)	(66)
Benefit obligation at end of period	998	1,311	998	1,311
Funded status
Benefit obligation at end of period	(998)	(1,311)	(998)	(1,311)
Unamortized gain			(345)	(133)
Accrued benefit cost at end of period	(1,343)	(1,444)	(1,343)	(1,444)
Components of net periodic benefit cost
Interest cost	4	7	14	24
Net periodic benefit cost	$ 4	$ 7	$ 14	$ 24

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Net Periodic Benefit Cost Not Yet Recognized (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Retirement Benefits, Description [Abstract]
Unamortized net actuarial gain	$ 345	$ 345	$ 133
Deferred tax expense	(72)	(72)	(28)
Net unrecognized postretirement benefits included in AOCI	$ 273	$ 273	$ 105

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) - Summary of Unrealized Gains and Losses on Available-for-Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 232,003	$ 227,685	$ 228,923	$ 245,657
Other comprehensive loss	(9,340)	(14,506)	(8,262)	(45,423)
Balance at end of period	226,665	219,917	226,665	219,917
Accumulated Net Investment Gain (Loss) Attributable to Parent
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	(43,781)	(32,795)	(44,718)	(1,718)
Unrealized losses arising during the period	(12,748)	(18,812)	(11,562)	(58,149)
Reclassification of net realized gains during the period	0	(6)	0	(7)
Related deferred taxes	2,677	3,952	2,428	12,213
Other comprehensive loss	(10,071)	(14,866)	(9,134)	(45,943)
Balance at end of period	$ (53,852)	$ (47,661)	$ (53,852)	$ (47,661)

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) - Summary of Transfer of AFS Securities to HTM (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 232,003	$ 227,685	$ 228,923	$ 245,657
Other comprehensive loss	(9,340)	(14,506)	(8,262)	(45,423)
Balance at end of period	226,665	219,917	226,665	219,917
Accumulated Net Gain (Loss) on Securities Transferred from Available-for-Sale to Held-to-Maturity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	(59)	(73)	(64)	(87)
Amortization of net unrealized gains	1	7	7	25
Related deferred taxes	0	(1)	(1)	(5)
Other comprehensive loss	1	6	6	20
Balance at end of period	$ (58)	$ (67)	$ (58)	$ (67)

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) - Summary of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 232,003	$ 227,685	$ 228,923	$ 245,657
Other comprehensive loss	(9,340)	(14,506)	(8,262)	(45,423)
Balance at end of period	226,665	219,917	226,665	219,917
Accumulated Net Gain (Loss) from Cash Flow Hedges
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	680	146	544	0
Unrealized gains on cash flow hedging derivatives arising during the period	924	448	1,096	633
Related deferred taxes	(194)	(94)	(230)	(133)
Other comprehensive loss	730	354	866	500
Balance at end of period	$ 1,410	$ 500	$ 1,410	$ 500

Financial Derivative Instrume_3

Financial Derivative Instruments (Details)	Sep. 30, 2023 USD ($) derivative	Dec. 31, 2022 USD ($) derivative	Sep. 30, 2022 USD ($) derivative
Customer loan interest swap agreements
Derivative [Line Items]
Collateral posted	$ 0
Designated as Hedging Instrument | Interest rate swap agreements
Derivative [Line Items]
Derivative asset	255,000,000	$ 30,000,000	$ 30,000,000
Fair Value	$ 2,489,000	689,000	633,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap October 27 2023
Derivative [Line Items]
Fixed Rate Paid	2.498%
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap January 27 2024
Derivative [Line Items]
Fixed Rate Paid	2.576%
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap April 27 2024
Derivative [Line Items]
Fixed Rate Paid	2.619%
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap January 01 2026
Derivative [Line Items]
Fixed Rate Paid	3.836%
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate swap agreements
Derivative [Line Items]
Derivative asset	$ 105,000,000	30,000,000	30,000,000
Fair Value	$ 1,784,000	$ 689,000	$ 633,000
Cash Flow Hedging | Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Number of derivative instruments | derivative	6	6	6
Cash Flow Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap October 27 2023
Derivative [Line Items]
Derivative asset	$ 10,000,000	$ 10,000,000	$ 10,000,000
Fair Value	20,000	187,000	179,000
Cash Flow Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap January 27 2024
Derivative [Line Items]
Derivative asset	10,000,000	10,000,000	10,000,000
Fair Value	92,000	233,000	212,000
Cash Flow Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap April 27 2024
Derivative [Line Items]
Derivative asset	10,000,000	10,000,000	10,000,000
Fair Value	159,000	269,000	242,000
Cash Flow Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap January 01 2026
Derivative [Line Items]
Derivative asset	75,000,000	0	0
Fair Value	1,513,000	0	0
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Fair Value	$ 0	$ 0	$ 0
Number of derivative instruments | derivative	12	12	12
Derivative notional amount	$ 73,144,000	$ 74,822,000	$ 77,256,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ 6,031,000	$ 4,910,000	$ 5,365,000
Number of derivative instruments | derivative	6	6	6
Derivative notional amount	$ 36,572,000	$ 37,411,000	$ 38,628,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ (6,031,000)	$ (4,910,000)	$ (5,365,000)
Number of derivative instruments | derivative	6	6	6
Derivative notional amount	$ 36,572,000	$ 37,411,000	$ 38,628,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Assets | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ 6,031,000	$ 4,910,000	$ 5,365,000
Number of derivative instruments | derivative	6	6	6
Derivative notional amount	$ 36,572,000	$ 37,411,000	$ 38,628,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Liabilities | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ (6,031,000)	$ (4,910,000)	$ (5,365,000)
Number of derivative instruments | derivative	6	6	6
Derivative notional amount	$ 36,572,000	$ 37,411,000	$ 38,628,000
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Swap March 01 2026
Derivative [Line Items]
Fixed Rate Paid	4.712%
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Swap March 01 2027
Derivative [Line Items]
Fixed Rate Paid	4.402%
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Swap March 01 2028
Derivative [Line Items]
Fixed Rate Paid	4.189%
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Swap August 01 2025
Derivative [Line Items]
Fixed Rate Paid	4.703%
Fair Value Hedging | Designated as Hedging Instrument | Interest rate swap agreements
Derivative [Line Items]
Derivative asset	$ 150,000,000	0	0
Fair Value	705,000	0	0
Fair Value Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap March 01 2026
Derivative [Line Items]
Derivative asset	40,000,000	0	0
Fair Value	63,000	0	0
Fair Value Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap March 01 2027
Derivative [Line Items]
Derivative asset	30,000,000	0	0
Fair Value	120,000	0	0
Fair Value Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap March 01 2028
Derivative [Line Items]
Derivative asset	30,000,000	0	0
Fair Value	250,000	0	0
Fair Value Hedging | Designated as Hedging Instrument | Other Assets | Interest Rate Swap August 01 2025
Derivative [Line Items]
Derivative asset	50,000,000	0	0
Fair Value	$ 272,000	$ 0	$ 0

Mortgage Servicing Rights - Nar

Mortgage Servicing Rights - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Transfers and Servicing [Abstract]
Moving average of weekly prepayment data (in months)	3 months
Anticipated loan prepayment rate of servicing assets (in hundredths)	4.46%
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate adjustment factor (in hundredths)	10%
Mortgage servicing rights capitalized	$ 34	$ 299
Amortization of mortgage servicing rights	280	402
Fair value of mortgage servicing rights	3,673	3,789	$ 3,734
Outstanding principal balance of loans serviced for others	$ 327,428	$ 348,589	$ 342,870

Mortgage Servicing Rights - Sch

Mortgage Servicing Rights - Schedule of Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Transfers and Servicing [Abstract]
Mortgage servicing rights	$ 8,687	$ 8,654	$ 8,640
Accumulated amortization	(6,441)	(6,161)	(6,046)
Carrying value	$ 2,246	$ 2,493	$ 2,594

Certificates of Deposit (Detail

Certificates of Deposit (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Deposits [Abstract]
Certificates of deposit less than $100,000	$ 641,429	$ 489,793	$ 407,344
Certificates $100,000 to $250,000	234,962	259,614	295,112
Certificates $250,000 and over	132,775	118,264	83,720
Total certificates of deposit	$ 1,009,166	$ 867,671	$ 786,176

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Recorded at Fair Value on a Recurring Basis (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]
Securities available for sale	$ 284,972	$ 284,509	$ 283,268
U.S. Treasury & Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	38,252	19,147	19,144
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	212,846	228,676	229,178
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	30,780	33,191	31,106
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,094	3,495	3,840
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Derivative assets	0	0	0
Total assets	0	0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 1 | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0	0
Derivative liabilities	0
Fair Value, Measurements, Recurring | Level 1 | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury & Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 1 |    Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 1 |    State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 1 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	284,972	284,509	283,268
Derivative assets	8,520	5,599	5,998
Total assets	293,492	290,108	289,266
Derivative liabilities	6,031	4,910	5,365
Fair Value, Measurements, Recurring | Level 2 | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,489	689	633
Derivative liabilities	0
Fair Value, Measurements, Recurring | Level 2 | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	6,031	4,910	5,365
Derivative liabilities	6,031	4,910	5,365
Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury & Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	38,252	19,147	19,144
Fair Value, Measurements, Recurring | Level 2 |    Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	212,846	228,676	229,178
Fair Value, Measurements, Recurring | Level 2 |    State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	30,780	33,191	31,106
Fair Value, Measurements, Recurring | Level 2 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,094	3,495	3,840
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Derivative assets	0	0	0
Total assets	0	0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 3 | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0	0
Derivative liabilities	0
Fair Value, Measurements, Recurring | Level 3 | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0	0
Derivative liabilities	0	0	0
Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury & Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 3 |    Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 3 |    State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Level 3 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0	0
Fair Value, Measurements, Recurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	284,972	284,509	283,268
Derivative assets	8,520	5,599	5,998
Total assets	293,492	290,108	289,266
Derivative liabilities	6,031	4,910	5,365
Fair Value, Measurements, Recurring | Total Fair Value | Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,489	689	633
Derivative liabilities	0
Fair Value, Measurements, Recurring | Total Fair Value | Customer loan interest swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	6,031	4,910	5,365
Derivative liabilities	6,031	4,910	5,365
Fair Value, Measurements, Recurring | Total Fair Value | U.S. Treasury & Agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	38,252	19,147	19,144
Fair Value, Measurements, Recurring | Total Fair Value |    Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	212,846	228,676	229,178
Fair Value, Measurements, Recurring | Total Fair Value |    State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	30,780	33,191	31,106
Fair Value, Measurements, Recurring | Total Fair Value | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 3,094	$ 3,495	$ 3,840

Fair Value - Narrative (Details

Fair Value - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Mortgage servicing rights impairment	$ 0	$ 0
Valuation allowance on individually analyzed financing receivable	$ 19,000	$ 151,000	$ 135,000

Fair Value - Assets Recorded at

Fair Value - Assets Recorded at Fair Value on a Non-Recurring Basis (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]
Mortgage servicing rights	$ 3,673	$ 3,734	$ 3,789
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,673	3,734	3,789
Total Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	0	0	0
Total Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,673	3,734	3,789
Total Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	0	0	0
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	0	0	0
Individually analyzed loans	0	0	0
Total assets	0	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,673	3,734	3,789
Individually analyzed loans	285	20	5
Total assets	3,958	3,754	3,794
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	0	0	0
Individually analyzed loans	0	0	0
Total assets	0	0	0
Fair Value, Measurements, Nonrecurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	3,673	3,734	3,789
Individually analyzed loans	285	20	5
Total assets	$ 3,958	$ 3,754	$ 3,794

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Estimated Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financial assets
Securities to be held to maturity (net of allowance for credit losses)	$ 311,864	$ 339,011	$ 313,796
Mortgage servicing rights	3,673	3,734	3,789
Financial liabilities
Local certificates of deposit	1,009,166	867,671	786,176
Total deposits	2,599,937	2,378,877	2,369,949
Carrying value
Financial assets
Securities to be held to maturity (net of allowance for credit losses)	387,374	393,896	381,906
Loans	2,056,806	1,898,226	1,841,588
Mortgage servicing rights	2,246	2,493	2,594
Financial liabilities
Local certificates of deposit	338,280	291,152	252,211
National certificates of deposit	670,886	576,519	533,965
Total deposits	1,009,166	867,671	786,176
Repurchase agreements	52,915	64,409	68,258
Federal Home Loan Bank advances	30,078	39,074	50,085
Total borrowed funds	82,993	103,483	118,343
Carrying value | Commercial | Real Estate
Financial assets
Loans	688,027	692,541	632,385
Carrying value | Commercial | Construction
Financial assets
Loans	70,822	92,994	127,765
Carrying value | Commercial |    Other
Financial assets
Loans	435,563	315,917	306,692
Carrying value | Municipal
Financial assets
Loans	58,071	40,439	48,521
Carrying value | Residential | Construction
Financial assets
Loans	28,410	49,686	41,440
Carrying value | Residential | Term
Financial assets
Loans	655,431	611,350	592,143
Carrying value | Home Equity
Financial assets
Loans	101,363	75,416	72,812
Carrying value | Consumer
Financial assets
Loans	19,119	19,883	19,830
Total Fair Value
Financial assets
Securities to be held to maturity (net of allowance for credit losses)	311,864	339,011	313,796
Loans	1,920,157	1,809,678	1,765,525
Mortgage servicing rights	3,673	3,734	3,789
Financial liabilities
Local certificates of deposit	319,218	275,658	239,377
National certificates of deposit	672,654	569,883	525,169
Total deposits	991,872	845,541	764,546
Repurchase agreements	52,793	64,289	59,208
Federal Home Loan Bank advances	30,074	39,064	50,071
Total borrowed funds	82,867	103,353	109,279
Total Fair Value | Commercial | Real Estate
Financial assets
Loans	652,297	669,752	615,560
Total Fair Value | Commercial | Construction
Financial assets
Loans	67,144	89,934	124,366
Total Fair Value | Commercial |    Other
Financial assets
Loans	423,464	312,219	304,024
Total Fair Value | Municipal
Financial assets
Loans	52,196	38,069	46,475
Total Fair Value | Residential | Construction
Financial assets
Loans	27,972	44,410	37,263
Total Fair Value | Residential | Term
Financial assets
Loans	577,982	558,274	543,378
Total Fair Value | Home Equity
Financial assets
Loans	102,124	78,878	76,287
Total Fair Value | Consumer
Financial assets
Loans	16,978	18,142	18,172
Total Fair Value | Level 1
Financial assets
Securities to be held to maturity (net of allowance for credit losses)	0	0	0
Loans	0	0	0
Mortgage servicing rights	0	0	0
Financial liabilities
Local certificates of deposit	0	0	0
National certificates of deposit	0	0	0
Total deposits	0	0	0
Repurchase agreements	0	0	0
Federal Home Loan Bank advances	0	0	0
Total borrowed funds	0	0	0
Total Fair Value | Level 1 | Commercial | Real Estate
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Commercial | Construction
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Commercial |    Other
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Municipal
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Residential | Construction
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Residential | Term
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Home Equity
Financial assets
Loans	0	0	0
Total Fair Value | Level 1 | Consumer
Financial assets
Loans	0	0	0
Total Fair Value | Level 2
Financial assets
Securities to be held to maturity (net of allowance for credit losses)	311,864	339,011	313,796
Loans	285	20	5
Mortgage servicing rights	3,673	3,734	3,789
Financial liabilities
Local certificates of deposit	319,218	275,658	239,377
National certificates of deposit	672,654	569,883	525,169
Total deposits	991,872	845,541	764,546
Repurchase agreements	52,793	64,289	59,208
Federal Home Loan Bank advances	30,074	39,064	50,071
Total borrowed funds	82,867	103,353	109,279
Total Fair Value | Level 2 | Commercial | Real Estate
Financial assets
Loans	0	0	0
Total Fair Value | Level 2 | Commercial | Construction
Financial assets
Loans	0	0	0
Total Fair Value | Level 2 | Commercial |    Other
Financial assets
Loans	0	20	5
Total Fair Value | Level 2 | Municipal
Financial assets
Loans	0	0	0
Total Fair Value | Level 2 | Residential | Construction
Financial assets
Loans	0	0	0
Total Fair Value | Level 2 | Residential | Term
Financial assets
Loans	285	0	0
Total Fair Value | Level 2 | Home Equity
Financial assets
Loans	0	0	0
Total Fair Value | Level 2 | Consumer
Financial assets
Loans	0	0	0
Total Fair Value | Level 3
Financial assets
Securities to be held to maturity (net of allowance for credit losses)	0	0	0
Loans	1,919,872	1,809,658	1,765,520
Mortgage servicing rights	0	0	0
Financial liabilities
Local certificates of deposit	0	0	0
National certificates of deposit	0	0	0
Total deposits	0	0	0
Repurchase agreements	0	0	0
Federal Home Loan Bank advances	0	0	0
Total borrowed funds	0	0	0
Total Fair Value | Level 3 | Commercial | Real Estate
Financial assets
Loans	652,297	669,752	615,560
Total Fair Value | Level 3 | Commercial | Construction
Financial assets
Loans	67,144	89,934	124,366
Total Fair Value | Level 3 | Commercial |    Other
Financial assets
Loans	423,464	312,199	304,019
Total Fair Value | Level 3 | Municipal
Financial assets
Loans	52,196	38,069	46,475
Total Fair Value | Level 3 | Residential | Construction
Financial assets
Loans	27,972	44,410	37,263
Total Fair Value | Level 3 | Residential | Term
Financial assets
Loans	577,697	558,274	543,378
Total Fair Value | Level 3 | Home Equity
Financial assets
Loans	102,124	78,878	76,287
Total Fair Value | Level 3 | Consumer
Financial assets
Loans	$ 16,978	$ 18,142	$ 18,172

Impact of Recently Issued Acc_2

Impact of Recently Issued Accounting Standards (Details) - USD ($)	Sep. 30, 2023		Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Securities to be held to maturity, allowance for credit loss	$ 432,000	[1]			$ 0	$ 0
Allowance for loan losses	23,322,000		$ 23,465,000		16,723,000	16,387,000	$ 16,201,000	$ 15,521,000
Unfunded commitments	1,486,000				100,000
Decrease to retained earnings	(226,665,000)		(232,003,000)		(228,923,000)	(219,917,000)	(227,685,000)	(245,657,000)
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease to retained earnings	$ (209,132,000)		$ (205,539,000)		(204,343,000)	$ (198,902,000)	$ (192,565,000)	$ (180,417,000)
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Securities to be held to maturity, allowance for credit loss				$ 438,000	438,000
Allowance for loan losses				6,210,000	6,210,000
Unfunded commitments				1,297,000	1,297,000
Decrease to retained earnings					6,277,000
Cumulative Effect, Period of Adoption, Adjustment | Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease to retained earnings				$ 6,277,000	$ 6,277,000
[1]December 31, 2022 and September 30, 2022 had no allowance for credit losses