Mid Penn Bancorp (MPB) 10-Q 8 May 24 2024 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2024	May 01, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	1-13677
Entity Registrant Name	MID PENN BANCORP, INC.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	25-1666413
Entity Address, Address Line One	2407 Park Drive
Entity Address, City or Town	Harrisburg
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	17110
City Area Code	1.866
Local Phone Number	642.7736
Title of 12(b) Security	Common Stock, $1.00 par value per share
Trading Symbol	MPB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		16,689,304
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000879635
Amendment Flag	false

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Cash and due from banks	$ 33,362	$ 45,435
Interest-bearing balances with other financial institutions	31,801	34,668
Federal funds sold	2,922	16,660
Total cash and cash equivalents	68,085	96,763
Investment securities:
HTM, at amortized cost (fair value $351,204 and $357,521)	396,998	399,128
AFS, at fair value	217,632	223,555
Equity securities available for sale, at fair value	431	438
Loans held for sale, at fair value	4,581	3,855
Loans, net of unearned interest	4,317,449	4,252,792
Less: ACL - Loans	(33,524)	(34,187)
Net loans	4,283,925	4,218,605
Premises and equipment, net	36,068	36,909
Operating lease right of use asset	8,414	8,953
Finance lease right of use asset	2,683	2,727
Cash surrender value of life insurance	52,997	54,497
Restricted investment in bank stocks	17,446	16,768
Accrued interest receivable	26,975	25,820
Deferred income taxes	22,894	24,146
Goodwill	127,031	127,031
Core deposit and other intangibles, net	6,051	6,479
Foreclosed assets held for sale	5,110	293
Other assets	53,058	44,825
Total Assets	5,330,379	5,290,792
Deposits:
Noninterest-bearing demand	807,861	801,312
Interest-bearing transaction accounts	2,082,846	2,086,450
Time	1,488,398	1,458,450
Total Deposits	4,379,105	4,346,212
Short-term borrowings	271,849	241,532
Long-term debt	23,941	59,003
Subordinated debt	46,201	46,354
Operating lease liability	8,683	9,285
Accrued interest payable	16,330	14,257
Other liabilities	33,302	31,799
Total Liabilities	4,779,411	4,748,442
Shareholders' Equity:
Common stock, par value $1.00 per share; 40,000,000 shares authorized at March 31, 2024 and December 31, 2023; 17,006,359 issued at March 31, 2024 and 16,998,929 at December 31, 2023; 16,565,637 outstanding at March 31, 2024 and 16,573,707 at December 31, 2023	17,006	16,999
Additional paid-in capital	406,150	405,725
Retained earnings	154,801	145,982
Accumulated other comprehensive loss	(16,947)	(16,637)
Treasury stock, at cost; 440,722 shares at March 31, 2024 and 425,222 shares at December 31, 2023	(10,042)	(9,719)
Total Shareholders’ Equity	550,968	542,350
Total Liabilities and Shareholders' Equity	$ 5,330,379	$ 5,290,792

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Investment securities held to maturity, at fair value	$ 351,204	$ 357,521
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	40,000,000	40,000,000
Common stock, issued (in shares)	17,006,359	16,998,929
Common stock, outstanding (in shares)	16,565,637	16,573,707
Treasury stock (in shares)	440,722	425,222

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
INTEREST INCOME
Loans, including fees	$ 63,236	$ 45,865
Investment securities:
Taxable	4,040	3,874
Tax-exempt	376	389
Other interest-bearing balances	403	53
Federal funds sold	136	45
Total Interest Income	68,191	50,226
INTEREST EXPENSE
Deposits	26,332	12,001
Short-term borrowings	4,446	1,490
Long-term and subordinated debt	957	686
Total Interest Expense	31,735	14,177
Net Interest Income	36,456	36,049
(Benefit)/Provision for credit losses	(937)	719
Net Interest Income After (Benefit)/Provision for Credit Losses	37,393	35,330
NONINTEREST INCOME
Net gain on sales of SBA loans	107	0
Earnings from cash surrender value of life insurance	284	254
Other	2,436	940
Total Noninterest Income	5,837	4,325
NONINTEREST EXPENSE
Salaries and employee benefits	15,462	13,844
Software licensing and utilization	2,120	1,946
Occupancy, net	1,982	1,886
Equipment	1,222	1,251
Shares tax	997	899
Legal and professional fees	998	800
ATM/card processing	534	493
Intangible amortization	428	344
FDIC Assessment	945	340
Merger and acquisition	0	224
Other	3,832	3,814
Total Noninterest Expense	28,520	25,841
INCOME BEFORE PROVISION FOR INCOME TAXES	14,710	13,814
Provision for income taxes	2,577	2,587
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS	$ 12,133	$ 11,227
PER COMMON SHARE DATA:
Basic Earnings Per Common Share (in dollars per share)	$ 0.73	$ 0.71
Diluted earnings per common share (in dollars per share)	$ 0.73	$ 0.70
Weighted average common shares outstanding (basic) (in shares)	16,567,902	15,886,186
Weighted average common shares outstanding (diluted) (in shares)	16,613,373	15,931,121
Fiduciary and wealth management
NONINTEREST INCOME
Non-interest Income	$ 1,132	$ 1,236
ATM debit card interchange
NONINTEREST INCOME
Non-interest Income	945	1,056
Service charges on deposits
NONINTEREST INCOME
Non-interest Income	509	435
Mortgage banking
NONINTEREST INCOME
Non-interest Income	424	384
Mortgage hedging
NONINTEREST INCOME
Non-interest Income	$ 0	$ 20

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income		$ 12,133	$ 11,227
Other comprehensive (loss)/income:
Unrealized (losses) arising during the period on available for sale securities, net of income tax costs	[1]	(1,711)	1,977
Unrealized holding losses arising during the period on interest rate derivatives used in cash flow hedges, net of income tax benefit	[1]	1,410	(128)
Change in defined benefit plans, net of income tax (cost) benefit	[1],[2]	8	5
Reclassification adjustment for settlement losses and other activity related to benefit plans, net of income taxes	[1],[3]	(17)	(12)
Total other comprehensive (loss)/income		(310)	1,842
Total comprehensive income		$ 11,823	$ 13,069
[1] The income tax impacts of the components of other comprehensive income are calculated using a 21% statutory tax rate. The reclassification adjustment for benefit plans includes settlement gains, amortization of prior service costs, and amortization of net gain or loss. Amounts are included in other income on the Consolidated Statements of Income within total noninterest income.

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Unrealized gains (losses) arising during period on available for sale securities, income tax (cost) benefit	$ 455	$ (526)
Unrealized holding losses arising during the period on interest rate derivatives used in cash flow hedges, income tax benefit	(375)	34
Change in defined benefit plans, expense (benefit)	(2)	1
Reclassification adjustment for settlement losses and other activity related to benefit plans, benefit (expense)	$ 5	$ 3

Consolidated Statements of Chan

Consolidated Statements of Changes In Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	[1]	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	[1]	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Balance (in shares) at Dec. 31, 2022				16,094,486
Balance at Dec. 31, 2022	$ 512,099	$ (11,548)		$ 16,094	$ 386,987	$ 133,114	$ (11,548)		$ (19,216)	$ (4,880)
Net income	11,227					11,227
Total other comprehensive income (loss), net of taxes	1,842								1,842
Common stock cash dividends declared - $0.20 per share	(3,176)					(3,176)
Employee Stock Purchase Plan (in shares)				2,217
Employee Stock Purchase Plan	57			$ 2	55
Director Stock Purchase Plan (in shares)				1,651
Director Stock Purchase Plan	43			$ 2	41
Restricted stock activity	249				249
Balance (in shares) at Mar. 31, 2023				16,098,354
Balance at Mar. 31, 2023	510,793			$ 16,098	387,332	129,617			(17,374)	(4,880)
Balance (in shares) at Dec. 31, 2023				16,998,929
Balance at Dec. 31, 2023	542,350			$ 16,999	405,725	145,982			(16,637)	(9,719)
Net income	12,133					12,133
Total other comprehensive income (loss), net of taxes	(310)								(310)
Common stock cash dividends declared - $0.20 per share	(3,314)					(3,314)
Repurchased stock	(323)									(323)
Employee Stock Purchase Plan (in shares)				5,653
Employee Stock Purchase Plan	112			$ 5	107
Director Stock Purchase Plan (in shares)				1,777
Director Stock Purchase Plan	36			$ 2	34
Restricted stock activity	284				284
Balance (in shares) at Mar. 31, 2024				17,006,359
Balance at Mar. 31, 2024	$ 550,968			$ 17,006	$ 406,150	$ 154,801			$ (16,947)	$ (10,042)
[1]The Corporation adopted ASU 2016-13

Consolidated Statements of Ch_2

Consolidated Statements of Changes In Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Common stock cash dividends declared (in dollars per share)	$ 0.20	$ 0.20
Accounting Standards Update [Extensible Enumeration]			Accounting Standards Update 2016-13 [Member]

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities:
Net Income	$ 12,133	$ 11,227
Adjustments to reconcile net income to net cash provided by operating activities:
(Benefit)/Provision for credit losses	(937)	719
Depreciation	1,192	1,202
Amortization of intangibles	428	344
Net amortization of security discounts/premiums	102	127
Noncash operating lease expense	539	509
Amortization of finance lease right of use asset	44	45
Earnings on cash surrender value of life insurance	(284)	(254)
Mortgage loans originated for sale	(16,808)	(24,615)
Proceeds from sales of mortgage loans originated for sale	16,506	24,797
Gain on sale of mortgage loans	(424)	(384)
SBA loans originated for sale	(1,553)	0
Proceeds from sales of SBA loans originated for sale	1,446	0
Gain on sale of SBA loans	(107)	0
Gain on sale of property, plant, and equipment	(32)	(31)
Accretion of subordinated debt	(153)	(147)
Stock compensation expense	284	249
Change in deferred income tax benefit	1,402	706
Increase accrued interest receivable	(1,155)	(800)
Decrease (Increase) in other assets	(3,484)	775
Increase (decrease) in accrued interest payable	2,073	3,506
Decrease in operating lease liability	(602)	(580)
(Decrease) Increase in other liabilities	1,799	(4,217)
Net Cash Provided By Operating Activities	12,409	13,178
Investing Activities:
Proceeds from the maturity or call of available-for-sale securities	3,741	3,743
Proceeds from the maturity or call of held-to-maturity securities	2,045	2,611
Stock dividends of FHLB and other bank stock	239	110
(Purchases) reduction of restricted investment in bank stock	(917)	164
Net increase in loans	(68,987)	(97,156)
Purchases of bank premises and equipment	(351)	(922)
Proceeds from the sale of premises and equipment	32	31
Net change in investments in tax credits and other partnerships	(1,548)	(2,174)
Net Cash Used in Investing Activities	(65,746)	(93,593)
Financing Activities:
Net increase in deposits	32,893	99,750
Common stock dividends paid	(3,314)	(3,176)
Proceeds from Employee and Director Stock Purchase Plan stock issuance	148	100
Treasury stock purchased	(323)	0
Net change in finance lease liability	(24)	(23)
Net change in short-term borrowings	30,317	(14,647)
Long-term debt repayment	(35,038)	(70)
Net Cash Provided by Financing Activities	24,659	81,934
Net (decrease)/ increase in cash and cash equivalents	(28,678)	1,519
Cash and cash equivalents, beginning of period	96,763	60,881
Cash and cash equivalents, end of period	68,085	62,400
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	29,662	10,671
Supplemental Noncash Disclosures:
Recognition of operating lease right of use assets	0	125
Recognition of operating lease liabilities	0	125
Loans transferred to foreclosed assets held for sale	$ 4,817	$ 205

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations Mid Penn Bancorp, Inc. ("Mid Penn" or the "Corporation"), through operations conducted by Mid Penn Bank (the "Bank") and its nonbank subsidiaries, engages in a full-service commercial banking and trust business, making available to the community a wide range of financial services, including, but not limited to, mortgage and home equity loans, secured and unsecured commercial and consumer loans, lines of credit, construction financing, farm loans, community development loans, loans to non-profit entities and local government loans, and various types of time and demand deposits including but not limited to, checking accounts, savings accounts, clubs, money market deposit accounts, certificates of deposit, and IRAs. In addition, the Bank provides a full range of trust and wealth management services through its Trust Department. Deposits are insured by the Federal Deposit Insurance Corporation ("FDIC") to the extent provided by law. Mid Penn also fulfills the insurance needs of both existing and potential customers through MPB Risk Services, LLC, doing business as MPB Insurance and Risk Management. The financial services are provided to individuals, partnerships, non-profit organizations, and corporations through its retail banking offices located in throughout Pennsylvania and two counties in New Jersey. Basis of Presentation For all periods presented, the accompanying consolidated financial statements include the accounts of Mid Penn Bancorp, Inc., its wholly-owned subsidiary, Mid Penn Bank, and four nonbank subsidiaries, MPB Financial Services, LLC, which includes MPB Wealth Management, LLC (which ceased operating during the first quarter of 2024) and MPB Risk Services, LLC, and MPB Launchpad Fund I, LLC. As of March 31, 2024, the accounts and activities of these nonbank subsidiaries were not material to warrant separate disclosure or segment reporting. As a result, Mid Penn has only one reportable segment for financial reporting purposes. All material intercompany accounts and transactions have been eliminated in consolidation. Certain information and disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. Mid Penn believes the information presented is not misleading, and the disclosures are adequate. For comparative purposes, the March 31, 2023 and December 31, 2023 balances have been reclassified, when necessary, to conform to the 2024 presentation. Such reclassifications had no impact on net income or total shareholders’ equity. In the opinion of management, all adjustments necessary for fair presentation of the periods presented have been reflected in the accompanying consolidated financial statements. All such adjustments are of a normal, recurring nature. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the 2023 Annual Report. Mid Penn has evaluated events and transactions occurring subsequent to the balance sheet date of March 31, 2024, for items that should potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the issuance date of these consolidated financial statements. Use of Estimates - The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates. Material estimates subject to significant change include the allowance for credit losses, the expected cash flows and collateral values associated with loans that are individually evaluated for credit losses, the carrying value of other real estate owned ("OREO"), the fair value of financial instruments, business combination fair value computations, the valuation of goodwill and other intangible assets, stock-based compensation and deferred income tax assets. Accounting Standards adopted and Updated Significant Accounting Policy On January 1, 2023, the Corporation adopted ASU 2016-13, Financial Instruments - Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments , which replaced the incurred loss methodology, and is referred to as CECL. The measurement of expected credit losses under CECL is applicable to financial assets measured at amortized cost, including loans and HTM debt securities. It also applies to OBS credit exposures (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with ASC Topic 842. Prior to 2024, the provision for OBS credit losses was included in Other Expenses on the Statement of Income. As of March 31, 2024, the provision for OBS credit losses is included in Provision for Credit Losses on the Income Statement. Prior periods have been updated for presentation. All other significant accounting policies used in preparation of the Consolidated Financial Statements are disclosed in the 2023 Annual Report. Those significant accounting policies are unchanged at March 31, 2024. Accounting Standards Pending Adoption ASU No. 2023-02: The FASB issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period. The Corporation does not expect the adoption of ASU No. 2023-02 to have a material impact on its consolidated financial statements. ASU 2023-06: The FASB issued ASU 2023-06, Disclosure Improvements - Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative . ASU 2023-06 amends the ASC to incorporate certain disclosure requirements from SEC Release No. 33-10532 - Disclosure Update and Simplification that was issued in 2018. The effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective, with early adoption prohibited. ASU 2023-06 is not expected to have a significant impact on our financial statements. ASU 2023-07: The FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures ASU 2023-07 amends the ASC to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. ASU 2023-07 is not expected to have a significant impact on our financial statements. ASU 2023-09 : The FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures ASU 2023-09 amends the ASC to enhance income tax disclosures by requiring entities to disclose income taxes paid (net of refunds received) disaggregated by federal, state and foreign taxes. Additionally, entities are required to disclose amounts greater than 5% of the total income taxes paid to an individual jurisdiction The amendments are effective for annual periods beginning after December 15, 2025. ASU 2023-09 is not expected to have a significant impact on our financial statements. ASU 2024-01 —The FASB issued ASU 2024-01, Compensation - Stock Compensation (Topic 718): Scope application of profits interest and similar awards The amendments in the ASU apply to all reporting entities that account for profits interest awards as compensation to employees or nonemployees in return for goods or services. The amendments are effective for annual periods beginning after December 15, 2025, and interim periods within those annual periods. ASU 2024-01 is not expected to have a significant impact on our financial statements. ASU 2024-02 : The FASB issued ASU 2024-02, Codification Improvements—Amendments to Remove References to the Concepts Statements This ASU contains amendments to the Codification that remove references to various FASB Concepts Statements. The amendments are effective for fiscal years beginning after Dec. 15, 2025. Early adoption is permitted. ASU 2024-02 is not expected to have a significant impact on our financial statements.

Business Combination

Business Combination	3 Months Ended
	Mar. 31, 2024
Business Combinations [Abstract]
Business Combination	Business Combination Brunswick Acquisition On May 19, 2023, Mid Penn completed its acquisition of Brunswick through the merger of Brunswick with and into Mid Penn with Mid Penn being the surviving corporation. In connection with this acquisition, Brunswick Bank, a wholly-owned subsidiary of Brunswick, merged with and into Mid Penn Bank, a wholly-owned subsidiary of Mid Penn. This transaction included the acquisition of 5 branches and extended Mid Penn’s footprint into Middlesex and Monmouth counties in central New Jersey. Mid Penn issued 849,510 shares of its common stock as well as a net cash payment to Brunswick shareholders of $27.6 million, for total consideration of $45.7 million for all outstanding stock and the cancellation of stock options of Brunswick. Mid Penn has recognized total goodwill of $12.8 million, which is calculated as the excess of both the consideration exchanged and liabilities assumed compared to the fair market value of identifiable assets acquired. The fair value of the consideration exchanged related to Mid Penn’s common stock was calculated based upon the closing market price of Mid Penn’s common stock as of May 19, 2023. None of the goodwill recognized is expected to be deductible for income tax purposes. Purchased loans and leases that reflect a more-than-insignificant deterioration of credit from origination are considered PCD. Mid Penn considers various factors in connection with the identification of more-than-insignificant deterioration in credit, including but not limited to nonperforming status, delinquency, risk ratings, FICO scores and other qualitative factors that indicate deterioration in credit quality since origination. For PCD loans and leases, the initial estimate of expected credit losses is recognized in the ACL on the date of acquisition using the same methodology as other loans and leases held-for-investment. As part of the Brunswick Acquisition, Mid Penn acquired PCD loans and leases of $18.7 million. Mid Penn established an ACL at acquisition of $336 thousand with a corresponding gross-up to the amortized cost of the PCD loans and leases. The non-credit discount on the PCD loans and leases was $2.4 million and the Day 1 fair value was $16.3 million. The initial provision expense for non-PCD loans associated with the Brunswick Acquisition was $2.0 million. Estimated fair values of the assets acquired and liabilities assumed in the Brunswick Acquisition as of the closing date are as follows: (In thousands) Assets acquired: Cash and cash equivalents $ 21,029 Federal funds sold 7,604 Investment securities 2,423 Loans 324,471 Goodwill 12,800 Core deposit intangible 999 Premises and equipment 4,568 Cash surrender value of life insurance 3,361 Deferred income taxes 6,393 Accrued interest receivable 1,171 Other assets 5,884 Total assets acquired 390,703 Liabilities assumed: Deposits: Noninterest-bearing demand 60,888 Interest-bearing demand 11,767 Money Market 47,362 Savings 14,203 Time 147,163 Long-term debt 60,136 Accrued interest payable 1,911 Other liabilities 1,613 Total liabilities assumed 345,043 Consideration paid $ 45,660 Cash paid $ 27,565 Fair value of common stock issued 18,095

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2024
Securities Financing Transactions Disclosures [Abstract]
Investment Securities	Investment Securities FASB ASU 2016-13, "Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments," was adopted by Mid Penn on January 1, 2023. ASU 2016-13 introduces the CECL methodology for estimating allowances for credit losses. ASU 2016-13 applies to all financial instruments carried at amortized cost, including HTM securities, and makes targeted improvements to the accounting for credit losses on AFS securities. In order to comply with ASC 326, Mid Penn conducted a review of its investment portfolio and determined that for certain classes of securities it would be appropriate to assume the expected credit loss to be zero. This zero-credit loss assumption applies to debt issuances of the U.S. Treasury and agencies and instrumentalities of the United States government. The reasons behind the adoption of the zero-credit loss assumption are as follows: • High credit rating • Long history with no credit losses • Guaranteed by a sovereign entity • Widely recognized as "risk-free rate" • Can print its own currency • Currency is routinely held by central banks, used in international commerce, and commonly viewed as reserve currency • Currently under the U.S. Government conservatorship or receivership Mid Penn will continuously monitor any changes in economic conditions, credit downgrades, changes to explicit or implicit guarantees granted to certain debt issuers, and any other relevant information that would indicate potential credit deterioration and prompt Mid Penn to reconsider its zero-credit loss assumption. At the date of adoption, Mid Penn’s estimated allowance for credit losses on AFS and HTM securities under ASU 2016-13 was deemed immaterial due to the composition of these portfolios. Both portfolios consist primarily of U.S. government agency guaranteed mortgage-backed securities for which the risk of loss is minimal. Therefore, Mid Penn did not recognize a cumulative effect adjustment through retained earnings related to the AFS and HTM securities. AFS Securities ASU 2016-13 makes targeted improvements to the accounting for credit losses on AFS securities. The concept of other-than-temporarily impaired has been replaced with the allowance for credit losses. Unlike HTM securities, AFS securities are evaluated on an individual level and pooling of securities is not allowed. Quarterly, Mid Penn evaluates if any security has a fair value less than its amortized cost. Once these securities are identified, in order to determine whether a decline in fair value resulted from a credit loss or other factors, Mid Penn performs further analysis as outlined below: • Review the extent to which the fair value is less than the amortized cost and observe the security’s lowest credit rating as reported by third-party credit ratings companies. • The securities that violate the credit loss triggers above would be subjected to additional analysis that may include, but is not limited to: changes in market interest rates, changes in securities credit ratings, security type, service area economic factors, financial performance of the issuer/or obligor of the underlying issue and third-party guarantee. • If Mid Penn determines that a credit loss exists, the credit portion of the allowance will be measured using a DCF analysis using the effective interest rate as of the security’s purchase date. The amount of credit loss Mid Penn records will be limited to the amount by which the amortized cost exceeds the fair value. The DCF analysis utilizes contractual maturities, as well as third-party credit ratings and cumulative default rates published annually by a reputable third-party. At March 31, 2024, the results of the analysis did not identify any securities that violate the credit loss triggers; therefore, no DCF analysis was performed and no credit loss was recognized on any of the securities available for sale. Accrued interest receivable is excluded from the estimate of credit losses for AFS securities. At March 31, 2024, accrued interest receivable totaled $982 thousand for AFS securities and was reported in accrued interest receivable on the accompanying Consolidated Balance Sheet. HTM Securities ASU 2016-13 requires institutions to measure expected credit losses on financial assets carried at amortized cost on a collective or pool basis when similar risks exist. Mid Penn uses several levels of segmentation in order to measure expected credit losses: • The portfolio is segmented into agency and non-agency securities. • The non-agency securities are separated into state and political subdivision obligations and corporate debt securities. Each individual segment is categorized by third-party credit ratings. As discussed above, Mid Penn has determined that for certain classes of securities it would be appropriate to assume the expected credit loss to be zero, which include debt issuances of the U.S. Treasury and agencies and instrumentalities of the United States government. This assumption will be reviewed and attested to quarterly. At March 31, 2024, Mid Penn’s HTM securities totaled $397.0 million. After applying appropriate probability of default and loss given default assumptions, the total amount of current expected credit losses was deemed immaterial. Therefore, no reserve was recorded at March 31, 2024. Accrued interest receivable is excluded from the estimate of credit losses for HTM securities. At March 31, 2024, accrued interest receivable totaled $2.2 million for HTM securities and was reported in accrued interest receivable At March 31, 2024, Mid Penn had no HTM securities that were past due 30 days or more as to principal or interest payments. Mid Penn had no HTM securities classified as nonaccrual at March 31, 2024. The amortized cost and estimated fair value of investment securities for the periods presented: March 31, 2024 (In thousands) Amortized Gross Gross Unrealized Estimated Available-for-sale U.S. Treasury and U.S. government agencies $ 36,664 $ — $ 1,174 $ 35,490 Mortgage-backed U.S. government agencies 165,402 — 18,637 146,765 State and political subdivision obligations 4,326 — 693 3,633 Corporate debt securities 35,737 — 3,993 31,744 Total available-for-sale debt securities 242,129 — 24,497 217,632 Held-to-maturity U.S. Treasury and U.S. government agencies $ 245,839 $ — $ 30,821 $ 215,018 Mortgage-backed U.S. government agencies 42,376 — 5,869 36,507 State and political subdivision obligations 83,318 2 6,958 76,362 Corporate debt securities 25,465 — 2,148 23,317 Total held-to-maturity debt securities 396,998 2 45,796 351,204 Total $ 639,127 $ 2 $ 70,293 $ 568,836 December 31, 2023 (In thousands) Amortized Gross Gross Unrealized Estimated Available-for-sale U.S. Treasury and U.S. government agencies $ 36,637 $ — $ 988 $ 35,649 Mortgage-backed U.S. government agencies 169,184 — 16,501 152,683 State and political subdivision obligations 4,332 — 686 3,646 Corporate debt securities 35,733 — 4,156 31,577 Total available-for-sale debt securities $ 245,886 $ — $ 22,331 $ 223,555 Held-to-maturity U.S. Treasury and U.S. government agencies $ 245,805 $ 2 $ 28,676 $ 217,131 Mortgage-backed U.S. government agencies 43,818 — 5,523 38,295 State and political subdivision obligations 84,035 11 6,486 77,560 Corporate debt securities 25,470 — 935 24,535 Total held-to-maturity debt securities 399,128 13 41,620 357,521 Total $ 645,014 $ 13 $ 63,951 $ 581,076 Estimated fair values of debt securities are based on quoted market prices, where applicable. If quoted market prices are not available, fair values are based on quoted market prices of instruments of a similar type, credit quality and structure, adjusted for differences between the quoted instruments and the instruments being valued. See "Note 8 - Fair Value Measurement," for additional information. Investment securities having a fair value of $383.9 million at March 31, 2024 and $380.3 million at December 31, 2023 were pledged to secure public deposits, some Trust department deposit accounts, and certain other borrowings. In accordance with legal provisions for alternatives other than pledging of investments, Mid Penn also obtains letters of credit from the FHLB to secure certain public deposits. These FHLB letter of credit commitments totaled $142.9 million as of March 31, 2024 and $153.5 million as of December 31, 2023. The following tables present gross unrealized losses and fair value of debt investment securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position for the periods presented: (Dollars in thousands) Less Than 12 Months 12 Months or More Total March 31, 2024 Number Estimated Gross Number Estimated Gross Number Estimated Gross Available-for-sale debt securities: U.S. Treasury and U.S. government agencies — $ — $ — 19 $ 35,490 $ 1,174 19 $ 35,490 $ 1,174 Mortgage-backed U.S. government agencies — — — 93 146,765 18,637 93 146,765 18,637 State and political subdivision obligations — — — 8 3,633 693 8 3,633 693 Corporate debt securities — — — 18 31,744 3,993 18 31,744 3,993 Total available-for-sale debt securities — $ — $ — 138 $ 217,632 $ 24,497 138 $ 217,632 $ 24,497 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies — — — 145 215,018 30,821 145 215,018 30,821 Mortgage-backed U.S. government agencies — — — 64 36,507 5,869 64 36,507 5,869 State and political subdivision obligations 16 5,846 86 177 70,201 6,872 193 76,047 6,958 Corporate debt securities — — — 15 23,317 2,148 15 23,317 2,148 Total held-to-maturity debt securities 16 5,846 86 401 345,043 45,710 417 350,889 45,796 Total 16 $ 5,846 $ 86 539 $ 562,675 $ 70,207 555 $ 568,521 $ 70,293 (Dollars in thousands) Less Than 12 Months 12 Months or More Total December 31, 2023 Number Estimated Gross Number Estimated Gross Number Estimated Gross Available-for-sale securities: U.S. Treasury and U.S. government agencies — $ — $ — 19 $ 35,649 $ 988 19 $ 35,649 $ 988 Mortgage-backed U.S. government agencies 1 4,015 26 92 148,668 16,475 93 152,683 16,501 State and political subdivision obligations — — — 8 3,646 686 8 3,646 686 Corporate debt securities 1 410 90 17 31,167 4,066 18 31,577 4,156 Total available-for-sale securities 2 4,425 116 136 219,130 22,215 138 223,555 22,331 Held-to-maturity securities: U.S. Treasury and U.S. government agencies 1 $ 2,002 $ — 144 $ 215,129 $ 28,676 145 $ 217,131 $ 28,676 Mortgage-backed U.S. government agencies — — — 64 38,295 5,523 64 38,295 5,523 State and political subdivision obligations 25 8,729 63 170 68,831 6,423 195 77,560 6,486 Corporate debt securities 1 936 57 14 23,599 878 15 24,535 935 Total held to maturity securities 27 11,667 120 392 345,854 41,500 419 357,521 41,620 Total 29 $ 16,092 $ 236 528 $ 564,984 $ 63,715 557 $ 581,076 $ 63,951 There were no gross realized gains and losses on sales of available-for-sale debt securities for the three months ended March 31, 2024 and 2023. The table below illustrates the contractual maturity of debt investment securities at amortized cost and estimated fair value. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay with or without call or prepayment penalties. (In thousands) Available-for-sale Held-to-maturity March 31, 2024 Amortized Fair Amortized Fair Due in 1 year or less $ 12,496 $ 12,380 $ 13,047 $ 12,906 Due after 1 year but within 5 years 34,425 32,819 125,456 116,182 Due after 5 years but within 10 years 27,475 23,743 195,525 168,141 Due after 10 years 2,331 1,925 20,594 17,468 76,727 70,867 354,622 314,697 Mortgage-backed securities 165,402 146,765 42,376 36,507 $ 242,129 $ 217,632 $ 396,998 $ 351,204

Loans and Allowance for Credit

Loans and Allowance for Credit Losses - Loans	3 Months Ended
	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans and Allowance for Credit Losses - Loans	Loans and Allowance for Credit Losses - Loans Mid Penn adopted the amendments of FASB ASU 2016-13, on January 1, 2023. The amendments of ASU 2016-13 created FASB ASC Topic 326, "Financial Instruments – Credit Losses," which, among other things, replace much of the guidance and disclosures previously provided in FASB ASC Topic 310, "Receivables." The guidance in FASB ASC Topic 326 replaces the incurred loss methodology with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to determine credit losses. In accordance with FASB ASC Subtopic 326-20, "Financial Instruments – Credit Losses – Measured at Amortized Cost," Mid Penn has developed an ACL methodology effective January 1, 2023, which replaces its previous allowance for loan losses methodology. See the section captioned "Allowance for Credit Losses, effective January 1, 2023" within this note for additional information regarding Mid Penn’s ACL. Loans, net of unearned income, are summarized as follows by portfolio segment: (In thousands) March 31, 2024 December 31, 2023 Commercial real estate CRE Nonowner Occupied $ 1,174,774 $ 1,149,553 CRE Owner Occupied 622,574 629,904 Multifamily 334,952 309,059 Farmland 212,018 212,690 Total Commercial real estate 2,344,318 2,301,206 Commercial and industrial 671,395 675,079 Construction Residential Construction 103,861 92,843 Other Construction 383,428 362,624 Total Construction 487,289 455,467 Residential mortgage 1-4 Family 1st Lien 334,557 339,142 1-4 Family Rental 340,052 341,937 HELOC and Junior Liens 132,703 132,795 Total Residential Mortgage 807,312 813,874 Consumer 7,135 7,166 Total loans $ 4,317,449 $ 4,252,792 Total loans are stated at the amount of unpaid principal, adjusted for net deferred fees and costs. Net deferred loan fees of $4.0 million and $4.2 million reduced the carrying value of loans as of March 31, 2024 and December 31, 2023, respectively. Accrued interest receivable is not included in the amortized cost basis of Mid Penn's loans. At March 31, 2024, accrued interest receivable for loans totaled $23.2 million with no related ACL and was reported in other assets Past Due and Nonaccrual Loans The performance and credit quality of the loan portfolio is also monitored by analyzing the age of the loans receivable as determined by the length of time a recorded payment is past due. The classes of the loan portfolio summarized by the past due status as of March 31, 2024 and December 31, 2023, are summarized as follows: (In thousands) 30-59 60-89 Greater Total Past Current Total Loans Loans March 31, 2024 Commercial real estate $ 9,647 $ — $ 778 $ 10,425 $ 2,333,893 $ 2,344,318 $ — Commercial and industrial — 87 1,771 1,858 669,537 671,395 — Construction — — — — 487,289 487,289 — Residential mortgage 1,328 387 2,201 3,916 803,396 807,312 — Consumer 18 — 25 43 7,092 7,135 25 Total $ 10,993 $ 474 $ 4,775 $ 16,242 $ 4,301,207 $ 4,317,449 $ 25 (In thousands) 30-59 60-89 Greater Total Past Current Total Loans Loans December 31, 2023 Commercial real estate $ 5,073 $ 682 $ 2,974 $ 8,729 $ 2,292,477 $ 2,301,206 $ — Commercial and industrial 638 24 1,270 1,932 673,147 675,079 — Construction — 270 2,559 2,829 452,638 455,467 — Residential mortgage 4,648 267 2,518 7,433 806,441 813,874 — Consumer 41 31 — 72 7,094 7,166 — Total $ 10,400 $ 1,274 $ 9,321 $ 20,995 $ 4,231,797 $ 4,252,792 $ — Loans are placed on nonaccrual status when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely, generally when the loan becomes 90 days or more past due. Nonaccrual loans by loan portfolio class, including loans acquired with credit deterioration, as of March 31, 2024 and December 31, 2023 are summarized as follows: March 31, 2024 December 31, 2023 (In thousands) With a Related Allowance Without a Related Allowance Total With a Related Allowance Without a Related Allowance Total Commercial real estate $ 449 $ 4,139 $ 4,588 $ 454 $ 6,133 $ 6,587 Commercial and industrial 1,202 1,156 2,358 1,222 64 1,286 Construction — — — — 2,559 2,559 Residential mortgage 41 3,402 3,443 2 3,782 3,784 Consumer — — — — — — $ 1,692 $ 8,697 $ 10,389 $ 1,678 $ 12,538 $ 14,216 The amount of interest income recognized on nonaccrual loans was approximately $159 thousand and $182 thousand during the three months ended March 31, 2024 and 2023, respectively. Credit Quality Indicators Mid Penn categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as current financial information, historical payment experience, credit documentation, public information and current economic trends, among other factors. On a minimum of a quarterly basis, Mid Penn analyzes loans individually to classify the loans as to their credit risk. The following table presents risk ratings by loan portfolio segment and origination year, which is the year of origination or renewal. PASS - This type of classification consists of 6 subcategories: Nominal Risk / Pass - This loan classification is a credit extension of the highest quality. Moderate Risk / Pass - This type of classification has strong financial ratios, substantial debt capacity, and low leverage with a very favorable comparison to industry peers or better than average improving trends are necessary to be in this classification. Good Acceptable Risk / Pass - The Borrower in this rating classification is a reasonable credit risk having financial ratios on par with its peers and demonstrates slightly improving trends over time; they list good quality assets and fairly low leverage plus ample debt capacity. Average Acceptable Risk / Pass - This type of classification has financial ratios and assets are of above average quality, the leverage is worse than average compared to industry standards; the Borrower should have a good repayment history and possess consistent earnings with some growth. Marginally Acceptable Risk / Pass - This type of classification has financial ratios consistent with industry averages, assets of average quality with ascertainable values, acceptable leverage, moderate capital assets and an acceptable reliance on trade debt; the Borrower demonstrates marginally adequate earnings, cash flow and debt service plus positive trends. Weak/Monitor Risk (Watch list) / Pass - This type of classification has financial ratios are slightly below standard industry averages and assets are below average quality with unstable values; fixed assets could be near or at the end of their useful life plus liabilities may not match the asset structure. SPECIAL MENTION - These credits have developing weaknesses deserving extra attention from the lender and lending management. They are currently protected, but potentially weak. The weakness may be, cash flow, leverage, liquidity, management, industry or other factors which may, if not checked or corrected, weaken the asset or inadequately protect the Bank’s credit position at some future date. SUBSTANDARD - These credit extensions also have well defined weaknesses, which are inadequately protected by the current worth and debt service capacity of the Borrowers, or the collateral pledged, if any. The repayment of principal and interest as originally intended can be jeopardized by defined weaknesses related to adverse financial, managerial, economic, market or political conditions. DOUBTFUL - These credits have definite weaknesses inherent in Substandard loans with added characteristics that are severe enough to make further collection in full highly questionable and improbable based on the current trends. LOSS . These loans are considered uncollectible and no longer a viable asset of the Bank. They lack an identifiable source of repayment based on an inability to generate sufficient cash flow to service their debt. All trends are negative and the damage to the financial condition of the Borrower can’t be reversed now or in the near future. March 31, 2024 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized (In thousands) 2024 2023 2022 2021 2020 Prior Total Commercial real estate Pass $ 49,466 $ 289,970 $ 568,000 $ 372,639 $ 293,680 $ 688,117 $ 43,525 $ 2,305,397 Special mention — 188 434 — — 16,407 191 17,220 Substandard or lower — — 2,990 206 3,146 15,313 46 21,701 Total commercial real estate 49,466 290,158 571,424 372,845 296,826 719,837 43,762 2,344,318 Commercial and industrial Pass 33,909 147,232 97,313 62,551 28,200 104,941 189,231 663,377 Special mention — 79 61 282 — 2,280 2,272 4,974 Substandard or lower — — — 591 — 1,938 515 3,044 Total commercial and industrial 33,909 147,311 97,374 63,424 28,200 109,159 192,018 671,395 Construction Pass 13,362 164,703 185,710 56,475 20,419 16,024 28,785 485,478 Special mention — — — — 1,811 — — 1,811 Substandard or lower — — — — — — — — Total construction 13,362 164,703 185,710 56,475 22,230 16,024 28,785 487,289 Residential mortgage Performing 25,512 145,753 148,963 109,236 87,274 197,768 84,656 799,162 Non-performing — 178 — 79 1,666 6,129 98 8,150 Total residential mortgage 25,512 145,931 148,963 109,315 88,940 203,897 84,754 807,312 Gross charge offs — — (21) — — (7) — (28) Net charge offs — — (21) — — (7) — (28) Consumer Performing 1,550 1,251 622 591 221 281 2,619 7,135 Non-performing — — — — — — — — Total consumer 1,550 1,251 622 591 221 281 2,619 7,135 Gross charge offs (16) — (2) — — (4) — (22) Current period recoveries 5 — — — — 1.00 — 6 Net charge offs (11) — (2) — — (3) — (16) Total Pass $ 96,737 $ 601,905 $ 851,023 $ 491,665 $ 342,299 $ 809,082 $ 261,541 $ 3,454,252 Special mention — 267 495 282 1,811 18,687 2,463 24,005 Substandard or lower — — 2,990 797 3,146 17,251 561 24,745 Performing 27,062 147,004 149,585 109,827 87,495 198,049 87,275 806,297 Nonperforming — 178 — 79 1,666 6,129 98 8,150 Total $ 123,799 $ 749,354 $ 1,004,093 $ 602,650 $ 436,417 $ 1,049,198 $ 351,938 $ 4,317,449 December 31, 2023 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized (In thousands) 2023 2022 2021 2020 2019 Prior Total Commercial real estate Pass $ 271,655 $ 556,801 $ 386,911 $ 297,746 $ 178,434 $ 528,326 $ 38,261 $ 2,258,134 Special mention 194 — — — 6,009 10,482 186 16,871 Substandard or lower — 5,209 208 3,162 229 17,345 48 26,201 Total commercial real estate 271,849 562,010 387,119 300,908 184,672 556,153 38,495 2,301,206 Gross charge offs — — — — — (16) — (16) Net charge offs — — — — — (16) — (16) Commercial and industrial Pass 158,824 106,714 68,448 29,961 50,206 57,892 188,714 660,759 Special mention — 89 2,224 — 227 2,200 4,391 9,131 Substandard or lower — — 662 — — 1,978 2,549 5,189 Total commercial and industrial 158,824 106,803 71,334 29,961 50,433 62,070 195,654 675,079 Gross charge offs — (100) — (111) — (27) — (238) Net charge offs — (100) — (111) — (27) — (238) Construction Pass 153,596 181,214 54,658 22,357 10,247 5,856 23,262 451,190 Special mention — — — 1,447 — — — 1,447 Substandard or lower — 573 — — — 2,257 — 2,830 Total construction 153,596 181,787 54,658 23,804 10,247 8,113 23,262 455,467 Residential mortgage Performing 158,634 153,203 111,610 90,382 27,863 178,898 87,723 808,313 Non-performing — — 93 1,470 — 3,998 — 5,561 Total residential mortgage 158,634 153,203 111,703 91,852 27,863 182,896 87,723 813,874 Gross charge offs — — — — — (13) — (13) Current period recoveries — — — — — 38 — 38 Net recoveries — — — — — 25 — 25 Consumer Performing 2,361 754 649 273 223 103 2,803 7,166 Total consumer 2,361 754 649 273 223 103 2,803 7,166 Gross charge offs (86) — (10) (9) — (30) — (135) Current period recoveries 26 — — 1 — 5 — 32 Net charge offs (60) — (10) (8) — (25) — (103) Total Pass $ 584,075 $ 844,729 $ 510,017 $ 350,064 $ 238,887 $ 592,074 $ 250,237 $ 3,370,083 Special mention 194 89 2,224 1,447 6,236 12,682 4,577 27,449 Substandard or lower — 5,782 870 3,162 229 21,580 2,597 34,220 Performing 160,995 153,957 112,259 90,655 28,086 179,001 90,526 815,479 Nonperforming — — 93 1,470 — 3,998 — 5,561 Total $ 745,264 $ 1,004,557 $ 625,463 $ 446,798 $ 273,438 $ 809,335 $ 347,937 $ 4,252,792 Mid Penn had no loans classified as "doubtful" as of March 31, 2024 and December 31, 2023. There was $892 thousand and $121 thousand in loans for which formal foreclosure proceedings were in process at March 31, 2024 and December 31, 2023. Collateral-Dependent Loans A financial asset is considered to be collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For all classes of financial assets deemed collateral-dependent, Mid Penn elected the practical expedient to estimate expected credit losses based on the collateral’s fair value less cost to sell. In most cases, Mid Penn records a partial charge-off to reduce the loan’s carrying value to the collateral’s fair value less cost to sell. Substantially all of the collateral supporting collateral-dependent financial assets consists of various types of real estate, including residential properties; commercial properties such as retail centers, office buildings, and lodging; agriculture land; and vacant land. Allowance for Credit Losses, effective January 1, 2023 Mid Penn’s ACL - loans methodology is based upon guidance within FASB ASC Subtopic 326-20, as well as regulatory guidance from the FDIC, its primary federal regulator. The ACL - loans is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Credit quality within the loan portfolio is continuously monitored by management and is reflected within the ACL - loans. The ACL - loans is an estimate of expected losses inherent within Mid Penn’s existing loan portfolio. The ACL - loans is adjusted through the PCL and reduced by the charge off of loan amounts, net of recoveries. The loan loss estimation process involves procedures to appropriately consider the unique characteristics of Mid Penn’s loan portfolio segments. When computing allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history and other credit trends and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. Evaluations of the portfolio and individual credits are inherently subjective, as they require estimates, assumptions and judgments as to the facts and circumstances of particular situations. Determining the appropriateness of the allowance is complex and requires judgement by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the ACL and credit loss expense. Mid Penn estimates the ACL using relevant available information, from internal and external sources, relating to past events, current conditions and reasonable and supportable forecasts. Mid Penn uses a third-party software application to calculate the quantitative portion of the ACL using a methodology and assumptions specific to each loan pool. The qualitative portion of the allowance is based on general economic conditions and other internal and external factors affecting Mid Penn as a whole, as well as specific loans. Factors considered include the following: lending process, concentrations of credit, and credit quality. The quantitative and qualitative portions of the allowance are added together to determine the total ACL, which reflects management’s expectations of future conditions based on reasonable and supportable forecasts. The methodology for estimating the amount of expected credit losses reported in the ACL has two basic components: a collective, or pooled, component for estimated expected credit losses for pools of loans that share similar risk characteristics, and an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans. In estimating the ACL for the collective component, loans are segregated into loan pools based on loan purpose codes and similar risk characteristics. The commercial real estate and residential mortgage loan portfolio segments include loans for both commercial and residential properties that are secured by real estate. The underwriting process for these loans includes analysis of the financial position and strength of both the borrower and, if applicable, guarantor, experience with similar projects in the past, market demand and prospects for successful completion of the proposed project within the established budget and schedule, values of underlying collateral, availability of permanent financing, maximum loan-to-value ratios, minimum equity requirements, acceptable amortization periods and minimum debt service coverage requirements, based on property type. The borrower’s financial strength and capacity to repay their obligations remain the primary focus of underwriting. Financial strength is evaluated based upon analytical tools that consider historical and projected cash flows and performance, in addition to analysis of the proposed project for income-producing properties. Additional support offered by guarantors is also considered when applicable. Ultimate repayment of these loans is sensitive to interest rate changes, general economic conditions, liquidity and availability of long-term financing. The commercial and industrial loan portfolio segment includes commercial loans made to many types of businesses for various purposes, such as short-term working capital loans that are usually secured by accounts receivable and inventory, equipment and fixed asset purchases that are secured by those assets, and term financing for those within Mid Penn’s geographic markets. Mid Penn’s credit underwriting process for commercial and industrial loans includes analysis of historical and projected cash flows and performance, evaluation of financial strength of both borrowers and guarantors as reflected in current and detailed financial information, and evaluation of underlying collateral to support the credit. The consumer loan portfolio segment is comprised of loans which are underwritten after evaluating a borrower’s capacity, credit and collateral. Several factors are considered when assessing a borrower’s capacity, including the borrower’s employment, income, current debt, assets and level of equity in the property. Credit is assessed using a credit report that provides credit scores and the borrower’s current and past information about their credit history. Loan-to-value and debt-to-income ratios, loan amount and lien position are also considered in assessing whether to originate a loan. These borrowers are particularly susceptible to downturns in economic trends, such as conditions that negatively affect housing prices and demand and levels of unemployment. Mid Penn utilizes a DCF method to estimate the quantitative portion of the allowance for credit losses for loan pools. The DCF is based off of historical losses, including peer data, which is correlated to national unemployment and GDP. The PD and LGD measures are used in conjunction with prepayment data as inputs into the DCF model to calculate the cash flows at the individual loan level. Contractual cash flows based on loan terms are adjusted for PD, LGD and prepayments to derive loss cash flows. These loss cash flows are discounted by the loan’s coupon rate to arrive at the discounted cash flow based quantitative loss. The prepayment studies are updated quarterly by a third-party for each applicable pool. Mid Penn determined that reasonable and supportable forecasts could be made for a twelve-month period for all of its loan pools. To the extent the lives of the loans in the LHFI portfolio extend beyond this forecast period, Mid Penn uses a reversion period of four quarters and reverts to the historical mean on a straight-line basis over the remaining life of the loans. Qualitative factors used in the ACL methodology include the following: • Lending process • Concentrations of credit • Peer Group Divergence The ACL for individual loans, such as non-accrual and PCD, that do not share risk characteristics with other loans is measured as the difference between the discounted value of expected future cash flows, based on the effective interest rate at origination, and the amortized cost basis of the loan, or the net realizable value. The ACL is the difference between the loan’s net realizable value and its amortized cost basis (net of previous charge-offs and deferred loan fees and costs), except for collateral-dependent loans. A loan is collateral dependent when the borrower is experiencing financial difficulty and repayment of the loan is expected to be provided substantially through the sale of the collateral. The expected credit loss for collateral-dependent loans is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral, adjusted for the estimated cost to sell. Fair value estimates for collateral-dependent loans are derived from appraised values based on the current market value or the "as is" value of the collateral, normally from recently received and reviewed appraisals. Current appraisals are ordered on a regular basis based on the inspection date or more often if market conditions necessitate. Appraisals are obtained from state-certified appraisers and are based on certain assumptions, which may include construction or development status and the highest and best use of the property. These appraisals are reviewed by Mid Penn’s Real Estate Administration Group to ensure they are acceptable, and values are adjusted down for costs associated with asset disposal. If the calculated expected credit loss is determined to be permanent or not recoverable, the amount of the expected credit loss is charged off. Mid Penn may also purchase loans or acquire loans through a business combination. At the purchase or acquisition date, loans are evaluated to determine whether there has been more than insignificant credit deterioration since origination. Loans that have experienced more than insignificant credit deterioration since origination are referred to as PCD loans. In its evaluation of whether a loan has experienced more than insignificant deterioration in credit quality since origination, Mid Penn takes into consideration loan grades, past due and nonaccrual status. Mid Penn may also consider external credit rating agency ratings for borrowers and for non-commercial loans, FICO score or band, probability of default levels, and number of times past due. At the purchase or acquisition date, the amortized cost basis of PCD loans is equal to the purchase price and an initial estimate of credit losses. The initial recognition of expected credit losses on PCD loans has no impact on net income. When the initial measurement of expected credit losses on PCD loans is calculated on a pooled loan basis, the expected credit losses are allocated to each loan within the pool. Any difference between the initial amortized cost basis and the unpaid principal balance of the loan represents a noncredit discount or premium, which is accreted (or amortized) into interest income over the life of the loan. Subsequent changes to the ACL on PCD loans are recorded through the PCL. For purchased loans that are not deemed to have experienced more than insignificant credit deterioration since origination and are therefore not deemed PCD, any discounts or premiums included in the purchase price are accreted (or amortized) over the contractual life of the individual loan. Loans are charged off against the ACL, with any subsequent recoveries credited back to the ACL account. Expected recoveries may not exceed the aggregate of amounts previously charged off and expected to be charged off. The following tables present the activity in the ACL - loans by portfolio segment for the three months ended March 31, 2024 and three months ended March 31, 2023: (In thousands) As of March 31, 2024 Balance at Charge offs Recoveries Net loans (charged off) recovered (Benefit)/Provision for credit losses Balance at Commercial Real Estate CRE Nonowner Occupied 10,267 — — — 150 10,417 CRE Owner Occupied 5,646 — — — (44) 5,602 Multifamily 2,202 — — — 168 2,370 Farmland 2,064 — — — (62) 2,002 Commercial and industrial 7,131 — — — (631) 6,500 Construction Residential Construction 1,256 — — — (80) 1,176 Other Construction 2,146 — — — 25 2,171 Residential Mortgage 1-4 Family 1st Lien 1,207 (7) — (7) 71 1,271 1-4 Family Rental 1,859 (21) — (21) (299) 1,539 HELOC and Junior Liens 389 — — — 68 457 Consumer 20 (22) 6 (16) 15 19 Total 34,187 (50) 6 (44) (619) 33,524 (In thousands) Balance at CECL Impact Charge offs Recoveries Net loans (charged off) recovered Provision/(Benefit) for credit losses Balance at Commercial Real Estate CRE Nonowner Occupied $ 8,284 $ 259 $ — $ — $ — $ (368) $ 8,175 CRE Owner Occupied 2,916 91 (16) — (16) 88 3,079 Multifamily 1,111 35 — — — 13 1,159 Farmland 831 26 — — — 42 899 Commercial and industrial 4,593 6,601 (111) — (111) 186 11,269 Construction Residential Construction — 1,270 — — — 153 1,423 Other Construction — 1,931 — — — 277 2,208 Residential Mortgage 1-4 Family 1st Lien 370 1,307 (4) — (4) (317) 1,356 1-4 Family Rental 288 731 — 30 30 17 1,066 HELOC and Junior Liens 661 (230) — — — 21 452 Consumer 29 154 (19) 7 (12) 8 179 Unallocated (126) (244) — — — 370 — Total $ 18,957 $ 11,931 $ (150) $ 37 $ (113) $ 490 $ 31,265 The following table presents the ACL for loans and the amortized cost basis of the loans by the measurement methodology used as of March 31, 2024 and December 31, 2023: (In thousands) ACL - Loans Loans March 31, 2024 Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total ACL - Loans Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total Loans Commercial real estate CRE Nonowner Occupied $ 10,061 $ 356 $ 10,417 $ 1,172,396 $ 2,378 $ 1,174,774 CRE Owner Occupied 5,602 — 5,602 620,534 2,040 622,574 Multifamily 2,351 19 2,370 334,781 171 334,952 Farmland 2,002 — 2,002 212,018 — 212,018 Commercial and industrial 5,761 739 6,500 669,037 2,358 671,395 Construction Residential Construction 1,176 — 1,176 103,861 — 103,861 Other Construction 2,171 — 2,171 383,428 — 383,428 Residential mortgage 1-4 Family 1st Lien 1,271 — 1,271 332,822 1,735 334,557 1-4 Family Rental 1,535 4 1,539 339,696 356 340,052 HELOC and Junior Liens 457 — 457 131,351 1,352 132,703 Consumer 19 — 19 7,135 — 7,135 Total $ 32,406 $ 1,118 $ 33,524 $ 4,307,059 $ 10,390 $ 4,317,449 (In thousands) ACL - Loans Loans December 31, 2023 Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total ACL - Loans Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total Loans Commercial real estate CRE Nonowner Occupied $ 9,906 $ 361 $ 10,267 $ 1,145,048 $ 4,505 $ 1,149,553 CRE Owner Occupied 5,646 — 5,646 627,995 1,909 629,904 Multifamily 2,190 12 2,202 308,886 173 309,059 Farmland 2,064 — 2,064 212,690 — 212,690 Commercial and industrial 6,419 712 7,131 673,793 1,286 675,079 Construction Residential Construction 1,256 — 1,256 92,270 573 92,843 Other Construction 2,146 — 2,146 360,368 2,256 362,624 Residential mortgage 1-4 Family 1st Lien 1,207 — 1,207 337,267 1,875 339,142 1-4 Family Rental 1,857 2 1,859 341,236 701 341,937 HELOC and Junior Liens 389 — 389 131,587 1,208 132,795 Consumer 20 — 20 7,166 — 7,166 Total $ 33,100 $ 1,087 $ 34,187 $ 4,238,306 $ 14,486 $ 4,252,792 Modifications to Borrowers Experiencing Financial Difficulty From time to time, we may modify certain loans to borrowers who are experiencing financial difficulty. In some cases, these modifications may result in new loans. Loan modifications to borrowers experiencing financial difficulty may be in the form of principal forgiveness, an interest rate reduction, an other-than-insignificant payment delay, or a term extension, or a combination thereof, among other things. There was one new modification for the quarter ending March 31, 2024. Information related to loans modified (by type of modification), whereby the borrower was experiencing financial difficulty at the time of modification, is set forth in the following table: (In thousands) Interest Only Term Extension Combination: Total % of Total Class of Financing Receivable Three months ended March 31, 2024 Residential Mortgage $ — $ — $ 92 $ 92 0.01 % Total $ — $ — $ 92 $ 92 0.01 % (In thousands) Interest Only Term Extension Combination: Total % of Total Class of Financing Receivable Three months ended March 31, 2023 Commercial real estate $ 51 $ — $ 180 $ 231 0.04 % Total $ 51 $ — $ 180 $ 231 0.04 % The financial effects of the interest-only loan modifications reduced the monthly payment amounts for the borrower and the term extensions in the table above added a weighted-average of 2.0 years to the life of the loans, which also reduced the monthly payment amounts for the borrowers.

Deposits

Deposits	3 Months Ended
	Mar. 31, 2024
Deposits [Abstract]
Deposits	Deposits Deposits consisted of the following as of March 31, 2024 and December 31, 2023: (Dollars in thousands) March 31, 2024 % of Total Deposits December 31, 2023 % of Total Deposits Noninterest-bearing demand deposits $ 807,861 18.4 % $ 801,312 18.4 % Interest-bearing demand deposits 923,120 21.1 % 947,372 21.8 % Money market 874,833 20.0 % 850,674 19.6 % Savings 284,893 6.5 % 288,404 6.6 % Total demand and savings 2,890,707 66.0 % 2,887,762 66.4 % Time 1,488,398 34.0 % 1,458,450 33.6 % Total deposits $ 4,379,105 100.0 % $ 4,346,212 100.0 % Overdrafts $ 558 0.01 % $ 315 0.01 % The scheduled maturities of time deposits at March 31, 2024 were as follows: Time Deposits (In thousands) Less than $250,000 $250,000 or more Maturing in 2024 $ 827,090 $ 279,833 Maturing in 2025 238,921 66,846 Maturing in 2026 38,245 3,463 Maturing in 2027 17,642 1,194 Maturing in 2028 11,241 572 Maturing thereafter 3,059 292 $ 1,136,198 $ 352,200 Mid Penn had $244.8 million in brokered certificates of deposits as of March 31, 2024 and December 31, 2023. As of March 31, 2024 and December 31, 2023, Mid Penn had $91.1 million and $96.7 million of CDAR deposits, respectively.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Mid Penn manages its exposure to certain interest rate risks through the use of derivatives; however, none are entered into for speculative purposes. In 2023, Mid Penn entered into outstanding derivative contracts designated as hedges. Mid Penn’s free-standing derivative financial instruments are required to be carried at their fair value on the Consolidated Balance Sheets. Loan-level Interest Rate Swaps Mid Penn enters into loan-level interest rate swaps with certain qualifying, creditworthy commercial loan customers to meet their interest rate risk management needs. Mid Penn simultaneously enters into parallel interest rate swaps with dealer counterparties, with identical notional amounts and terms. The net result of the offsetting customer and dealer counterparty swap agreements is that the customer pays a fixed rate of interest and Mid Penn receives a floating rate. Mid Penn’s loan-level interest rate swaps are considered derivatives but are not accounted for using hedge accounting. Information related to loan level swaps is set forth in the following table: March 31, 2024 December 31, 2023 (Dollars in thousands) Interest rate swaps on loans with customers Notional amount $ 201,405 $ 187,192 Weighted average remaining term (years) 5.92 6.24 Receive fixed rate (weighted average) 4.56 % 4.59 % Pay variable rate (weighted average) 7.48 % 7.50 % Estimated fair value (1) $ 11,315 $ 10,484 March 31, 2024 December 31, 2023 (Dollars in thousands) Interest rate swaps on loans with correspondents Notional amount $ 201,405 $ 187,192 Weighted average remaining term (years) 5.92 6.24 Receive variable rate (weighted average) 4.56 % 7.50 % Pay fixed rate (weighted average) 7.48 % 4.59 % Estimated fair value $ 11,315 $ 10,484 (1) The net amount of the estimated fair value is disclosed in Other Liabilities on the Consolidated Balance Sheet. Cash Flow Hedges of Interest Rate Risk Mid Penn’s objectives in using interest rate derivatives are to reduce volatility in net interest income and to manage its exposure to interest rate movements. To accomplish this objective, Mid Penn primarily uses interest rate swaps as part of its interest rate risk management strategy. Information related to cash flow hedges is set forth in the following table: March 31, 2024 December 31, 2023 (Dollars in thousands) Cash flow hedges Notional amount $ 190,000 $ 190,000 Weighted average remaining term (years) 1.97 2.22 Pay fixed rate (weighted average) 3.74 % 3.74 % Receive variable rate (weighted average) 4.07 % 4.07 % Estimated fair value $ 3,228 $ 1,460 For derivatives designated and that qualify as cash flow hedges of interest rate risk, the unrealized gain or loss on the derivative is recorded in AOCI and subsequently reclassified into interest income in the same period during which the hedged transaction affects earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest income as interest payments are made on Mid Penn’s variable-rate liabilities. During the next twelve months, Mid Penn estimates that an additional $2.2 million will be reclassified as a decrease to interest expense.

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income	3 Months Ended
	Mar. 31, 2024
Other Income and Expenses [Abstract]
Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income The changes in each component of accumulated other comprehensive loss, net of taxes, are as follows: (I n thousands ) Unrealized Loss on Unrealized Defined Benefit Total Balance at December 31, 2023 $ (17,339) $ 820 $ (118) $ (16,637) OCI before reclassifications (1,711) 1,410 8 (293) Amounts reclassified from AOCI — — (17) (17) Balance at March 31, 2024 $ (19,050) $ 2,230 $ (127) (16,947) Balance at December 31, 2022 $ (19,327) $ — $ 111 $ (19,216) OCI before reclassifications 1,977 (128) 5 1,854 Amounts reclassified from AOCI — — (12) (12) Balance at March 31, 2023 $ (17,350) $ (128) $ 104 $ (17,374)

Fair Value Measurement

Fair Value Measurement	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement The Corporation uses estimates of fair value in applying various accounting standards for its consolidated financial statements on either a recurring or non-recurring basis. Fair value is defined as the price to sell an asset or transfer a liability in an orderly transaction between willing and able market participants. Mid Penn groups its assets and liabilities measured at fair value in three hierarchy levels, based on the observability and transparency of the inputs. The fair value hierarchy is as follows: Level 1 - Inputs that represent quoted prices for identical instruments in active markets. Level 2 - Inputs that represent quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability. Level 3 - Inputs that are largely unobservable, as little or no market data exists for the instrument being valued. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. There were no transfers of assets between fair value Level 1 and Level 2 during the three months ended March 31, 2024 or the year ended December 31, 2023. The following tables illustrate the assets measured at fair value on a recurring basis and reported on the Consolidated Balance Sheets. March 31, 2024 (In thousands) Level 1 Level 2 Level 3 Total Available-for-sale securities: U.S. Treasury and U.S. government agencies $ — $ 35,490 $ — $ 35,490 Mortgage-backed U.S. government agencies — 146,765 — 146,765 State and political subdivision obligations — 3,633 — 3,633 Corporate debt securities — 31,744 — 31,744 Equity securities 431 — — 431 Loans held for sale — 4,581 — 4,581 Other assets: Derivative assets — 14,543 — 14,543 Total $ 431 $ 236,756 $ — $ 237,187 December 31, 2023 (In thousands) Level 1 Level 2 Level 3 Total Available-for-sale securities: U.S. Treasury and U.S. government agencies $ — $ 35,649 $ — $ 35,649 Mortgage-backed U.S. government agencies — 152,683 — 152,683 State and political subdivision obligations — 3,646 — 3,646 Corporate debt securities — 31,577 — 31,577 Equity securities 438 — — 438 Loans held for sale — 3,855 — 3,855 Other assets: Derivative assets — 11,944 — 11,944 Total $ 438 $ 239,354 $ — $ 239,792 The valuation methodologies and assumptions used to estimate the fair value for the items in the preceding tables are as follows: Available for sale investment securities - The fair value of equity and debt securities classified as available for sale is determined by obtaining quoted market prices on nationally recognized securities exchanges (Level 1), or matrix pricing (Level 2), which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities, but rather, relying on the securities’ relationship to other benchmark quoted prices. Equity securities - The fair value of equity securities with readily determinable fair values is recorded on the Consolidated Balance Sheet, with realized and unrealized gains and losses reported in other expense on the Consolidated Statements of Income. Loans held for sale - This category includes mortgage loans held for sale that are measured at fair value. Fair values as of March 31, 2024 were measured as the price that secondary market investors were offering for loans with similar characteristics. Derivative assets - Interest rate swaps are measured by alternative pricing sources with reasonable levels of price transparency in markets that are not active. Based on the complex nature of interest rate swap agreements, the markets these instruments trade in are not as efficient and are less liquid than that of the more mature Level 1 markets. These markets do, however, have comparable, observable inputs in which an alternative pricing source values these assets in order to arrive at a fair market value. These characteristics classify interest rate swap agreements as Level 2. Mortgage banking derivatives represent the fair value of mortgage banking derivatives in the form of interest rate locks and forward commitments with secondary market investors and the fair value of interest rate swaps. The fair values of Mid Penn’s interest rate locks, forward commitments and interest rate swaps represent the amounts that would be required to settle the derivative financial instruments at the balance sheet date. These characteristics classify interest rate swap agreements as Level 2. See "Note 5 - Derivative Financial Instruments," for additional information. Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances. The following table illustrates Level 3 financial instruments measured at fair value on a nonrecurring basis: (In thousands) March 31, 2024 December 31, 2023 Individually evaluated loans, net of ACL $ 9,272 $ 13,399 Foreclosed assets held for sale 5,110 293 Net loans - This category consists of loans that were individually evaluated for credit losses, net of the related ACL, and have been classified as Level 3 assets. For 2023, the amount shown is the balance of individually evaluated loans reporting a specific allocation or that have been partially charged-off. All of these loans are considered collateral-dependent; therefore, all of Mid Penn’s impaired loans, whether reporting a specific allowance allocation or not, are considered collateral- dependent. Mid Penn utilized Level 3 inputs such as independent appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable. Appraisals may be adjusted downward by management for qualitative factors such as economic conditions and estimated liquidation expenses. Foreclosed assets held for sale - Values are based on appraisals that consider the sales prices of property in the proximate vicinity. The following tables summarize the carrying amount, fair value, and placement in the fair value hierarchy of Mid Penn's financial instruments as of the periods presented: March 31, 2024 Carrying Estimated Fair Value (In thousands) Level 1 Level 2 Level 3 Total Financial instruments - assets Cash and cash equivalents $ 68,085 $ 68,085 $ — $ — $ 68,085 Available-for-sale investment securities 217,632 — 217,632 — 217,632 Held-to-maturity investment securities 396,998 — 351,204 — 351,204 Equity securities 431 431 — — 431 Loans held for sale 4,581 — 4,581 — 4,581 Net loans 4,283,925 — — 4,285,266 4,285,266 Restricted investment in bank stocks 17,446 17,446 — — 17,446 Accrued interest receivable 26,975 26,975 — — 26,975 Derivative assets 14,543 — 14,543 — 14,543 Financial instruments - liabilities Deposits $ 4,379,105 $ — $ 4,368,088 $ — $ 4,368,088 Short-term borrowings 271,849 — 271,849 — 271,849 Long-term debt (1) 20,768 — 20,768 — 20,768 Subordinated debt 46,201 — 40,332 — 40,332 Accrued interest payable 16,330 16,330 — — 16,330 Derivative liabilities 11,315 — 11,315 — 11,315 (1) Long-term debt excludes finance lease obligations. December 31, 2023 Estimated Fair Value (In thousands) Carrying Level 1 Level 2 Level 3 Total Financial instruments - assets Cash and cash equivalents $ 96,763 $ 96,763 $ — $ — $ 96,763 Available-for-sale investment securities 223,555 — 223,555 — 223,555 Held-to-maturity investment securities 399,128 — 357,521 — 357,521 Equity securities 438 438 — — 438 Loans held for sale 3,855 — 3,855 — 3,855 Net loans 4,218,605 — — 4,221,926 4,221,926 Restricted investment in bank stocks 16,768 16,768 — — 16,768 Accrued interest receivable 25,820 25,820 — — 25,820 Derivative assets 11,944 — 11,944 — 11,944 Financial instruments - liabilities Deposits $ 4,346,212 $ — $ 4,337,723 $ — $ 4,337,723 Short-term debt 241,532 — 241,532 — 241,532 Long-term debt (1) 55,806 — 55,081 — 55,081 Subordinated debt 46,354 — 39,515 — 39,515 Accrued interest payable 14,257 14,257 — — 14,257 Derivative liabilities 10,484 — 10,484 — 10,484 (1) Long-term debt excludes finance lease obligations. The Bank’s outstanding and unfunded credit commitments and financial standby letters of credit were deemed to have no significant fair value as of March 31, 2024 and December 31, 2023.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Guarantees and commitments to extend credit Mid Penn is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. The commitments include various guarantees and commitments to extend credit. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Mid Penn evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of credit, is based on management’s credit evaluation of the customer. Standby letters of credit and financial guarantees written are conditional commitments to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. Mid Penn had $61.4 million and $62.2 million of standby letters of credit outstanding as of March 31, 2024 and December 31, 2023, respectively. Mid Penn does not anticipate any losses because of these transactions. The amount of the liability as of March 31, 2024 and December 31, 2023 for payment under standby letters of credit issued was not considered material. Mid Penn adopted FASB ASC Topic 326, effective January 1, 2023, which requires Mid Penn to estimate expected credit losses for OBS credit exposures which are not unconditionally cancellable. Mid Penn maintains a separate ACL on OBS credit exposures, including unfunded loan commitments and letters of credit, which is included in other liabilities on the accompanying Consolidated Balance Sheets. The ACL - OBS is adjusted as a provision for OBS commitments in provision for credit losses. The estimate includes consideration of the likelihood that funding will occur, an estimate of exposure at default that is derived from utilization rate assumptions using a non-modeled approach, and PD and LGD estimates that are derived from the same models and approaches for Mid Penn's other loan portfolio segments described in "Note 4 - Loans and Allowance for Credit Losses - Loans" above, as these unfunded commitments share similar risk characteristics with these loan portfolio segments. The ACL - OBS at March 31, 2024 was $3.2 million compared to $3.6 million at December 31, 2023. On January 1, 2023 in conjunction with adopting ASC 326, Mid Penn recorded an additional $3.1 million of provision for OBS which was included in the adoption cumulative effect adjustment. A benefit for OBS credit losses of $318 thousand was recorded for the three months ended March 31, 2024. Litigation Mid Penn is subject to lawsuits and claims arising out of its normal conduct of business. In the opinion of management, after consultation with legal counsel, the ultimate disposition of these matters is not expected to have a material adverse effect on the consolidated financial condition of Mid Penn.

Debt

Debt	3 Months Ended
	Mar. 31, 2024
Maturities of Long-Term Debt [Abstract]
Debt	Debt Short-term FHLB and Correspondent Bank Borrowings Total short-term borrowings were $271.8 million and $241.5 million as of March 31, 2024 and December 31, 2023, respectively. Short-term borrowings generally consist of federal funds purchased and advances from the FHLB with an original maturity of less than a year. Federal funds purchased from correspondent banks mature in one business day and reprice daily based on the Federal Funds rate. Advances from the FHLB are collateralized by the Bank’s investment in the common stock of the FHLB and by a blanket lien on selected loan receivables comprised principally of real estate secured loans within the Bank’s portfolio totaling $3.0 billion at March 31, 2024. The Bank had a short-term borrowing capacity from the FHLB as of March 31, 2024 up to the Bank’s unused borrowing capacity of $1.7 billion (equal to $2.1 billion of maximum borrowing capacity, less the aggregate amount of FHLB letter of credits securing public funds deposits, and other FHLB advances and obligations outstanding) upon satisfaction of any stock purchase requirements of the FHLB. The Bank also has unused overnight lines of credit with other correspondent banks amounting to $35.0 million at March 31, 2024. No draws were made on these lines as of March 31, 2024 and December 31, 2023. Long-term Debt The following table presents a summary of long-term debt as of March 31, 2024 and December 31, 2023. (Dollars in thousands) March 31, 2024 December 31, 2023 FHLB fixed rate instruments: Due January 2024, 1.10% $ — $ 10,000 Due March 2024, 5.60% — 25,000 Due February 2026, 4.51% 20,000 20,000 Due August 2026, 4.80% 746 782 Due February 2027, 6.71% 22 24 Total FHLB fixed rate instruments 20,768 55,806 Lease obligations included in long-term debt 3,173 3,197 Total long-term debt $ 23,941 $ 59,003 As a member of the FHLB, the Bank can access a number of credit products which are utilized to provide liquidity. The FHLB fixed rate instruments obtained by the Bank are secured under the terms of a blanket collateral agreement with the FHLB consisting of FHLB stock and qualifying Bank loan receivables, principally real estate secured loans. The Bank also obtains letters of credit from the FHLB to secure certain public fund deposits of municipality and school district customers who agree to use of the FHLB letters of credit as a legally allowable alternative to investment pledging. These FHLB letter of credit commitments totaled $142.9 million and $153.5 million as of March 31, 2024 and December 31, 2023, respectively.

Subordinated Debt and Trust Pre

Subordinated Debt and Trust Preferred Securities	3 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Subordinated Debt and Trust Preferred Securities	Subordinated Debt and Trust Preferred Securities Subordinated Debt Assumed November 2021 with the Riverview Acquisition On November 30, 2021, Mid Penn completed its acquisition of Riverview and assumed $25.0 million of subordinated notes (the "Riverview Notes"). In accordance with purchase accounting principles, the Riverview Notes were assigned a fair value premium of $2.3 million. The notes are treated as Tier 2 capital for regulatory reporting purposes. The Riverview Notes were entered into by Riverview on October 6, 2020 with certain qualified institutional buyers and accredited institutional investors. The Riverview Notes have a maturity date of October 15, 2030 and initially bear interest, payable semi-annually, at a fixed annual rate of 5.75% per annum until October 15, 2025. Commencing on that date, the interest rate applicable to the outstanding principal amount due will be reset quarterly to an interest rate per annum equal to the then current three-month SOFR plus 563 bps, payable quarterly until maturity. Mid Penn may redeem the Riverview Notes at par, in whole or in part, at its option, anytime beginning on October 15, 2025. Subordinated Debt Issued December 2020 On December 22, 2020, Mid Penn entered into agreements for and sold, at 100% of their principal amount, an aggregate of $12.2 million of its subordinated notes due December 2030 (the "December 2020 Notes") on a private placement basis to accredited investors. The December 2020 Notes are treated as Tier 2 capital for regulatory capital purposes. The December 2020 Notes bear interest at a rate of 4.5% per year for the first five years and then float at the Wall Street Journal’s Prime Rate, provided that the interest rate applicable to the outstanding principal balance during the period the December 2020 Notes are floating will at no time be less than 4.5%. Interest is payable quarterly in arrears on March 31, June 30, September 30 and December 31 of each year, beginning on March 31, 2021. The December 2020 Notes will mature on December 31, 2030 and are redeemable, in whole or in part, without premium or penalty, on any interest payment date on or after December 31, 2025 and prior to December 31, 2030, subject to any required regulatory approvals. Additionally, if (i) all or any portion of the December 2020 Notes cease to be deemed Tier 2 Capital, (ii) interest on the December 2020 Notes fails to be deductible for United States federal income tax purposes, or (iii) Mid Penn will be considered an "investment company," Mid Penn may redeem the December 2020 Notes, in whole but not in part, by giving 10 days’ notice to the holders of the December 2020 Notes. In the event of a redemption described in the previous sentence, Mid Penn will redeem the December 2020 Notes at 100% of the principal amount of the December 2020 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption. Holders of the December 2020 Notes may not accelerate the maturity of the December 2020 Notes, except upon the bankruptcy, insolvency, liquidation, receivership or similar event of Mid Penn or Mid Penn Bank, its principal banking subsidiary. Related parties held $750 thousand of the December 2020 Notes as of March 31, 2024 and December 31, 2023. Subordinated Debt Issued March 2020 On March 20, 2020, Mid Penn entered into agreements with accredited investors who purchased $15.0 million aggregate principal amount of its subordinated notes due March 2030 (the "March 2020 Notes"). As a result of Mid Penn’s merger with Riverview on November 30, 2021, $6.9 million of the March 2020 Notes balance was redeemed as Riverview was a holder of the March 2020 Notes. The balance of March 2020 Notes outstanding as of March 31, 2024 was $8.1 million. The March 2020 Notes are intended to be treated as Tier 2 capital for regulatory capital purposes. The March 2020 Notes bear interest at a rate of 4.0% per year for the first five years and then float at the Wall Street Journal’s Prime Rate, provided that the interest rate applicable to the outstanding principal balance during the period the March 2020 Notes are floating will at no time be less than 4.25%. Interest is payable semi-annually in arrears on June 30 and December 30 of each year, beginning on June 30, 2020, for the first five years after issuance and will be payable quarterly in arrears thereafter on March 30, June 30, September 30 and December 30. The March 2020 Notes will mature on March 30, 2030 and are redeemable in whole or in part, without premium or penalty, at any time on or after March 30, 2025 and prior to March 30, 2030. Additionally, if all or any portion of the March 2020 Notes cease to be deemed Tier 2 Capital, Mid Penn may redeem, on any interest payment date, all or part of the 2020 Notes. In the event of a redemption described in the previous sentence, Mid Penn will redeem the March 2020 Notes at 100% of the principal amount of the March 2020 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption. Holders of the March 2020 Notes may not accelerate the maturity of the March 2020 Notes, except upon the bankruptcy, insolvency, liquidation, receivership or similar event of Mid Penn or Mid Penn Bank, its principal banking subsidiary. Related parties held $1.7 million of the March 2020 Notes as of March 31, 2024 and December 31, 2023.

Common Stock and Earnings Per S

Common Stock and Earnings Per Share	3 Months Ended
	Mar. 31, 2024
Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract]
Common Stock and Earnings Per Share	Common Stock and Earnings Per Share Treasury Stock Repurchase Program Mid Penn adopted a treasury stock repurchase program ("Program") initially effective March 19, 2020, and renewed through April 24, 2025 by Mid Penn’s Board of Directors on April 24, 2024. The Program authorizes the repurchase of up to $15.0 million of Mid Penn’s outstanding common stock. Under the Program, Mid Penn conducts repurchases of its common stock through open market transactions (which may be by means of a trading plan adopted under SEC Rule 10b5-1) or in privately negotiated transactions. Repurchases under the Program are made at the discretion of management and are subject to market conditions and other factors. There is no guarantee as to the exact number of shares that Mid Penn may repurchase. The Program is able to be modified, suspended or terminated at any time, at Mid Penn’s discretion, based upon a number of factors, including liquidity, market conditions, the availability of alternative investment opportunities and other factors Mid Penn deems appropriate. The Program does not obligate Mid Penn to repurchase any shares. During the three months ended March 31, 2024, Mid Penn repurchased 15,500 shares of common stock at an average price of $20.81. As of March 31, 2024, Mid Penn had repurchased 440,722 shares of common stock at an average price of $22.78 per share under the Program. The Program had approximately $5.0 million remaining available for repurchase as of March 31, 2024. Dividend Reinvestment Plan Under Mid Penn’s amended and restated DRIP, 300,000 shares of Mid Penn’s authorized but unissued common stock are reserved for issuance. The DRIP also allows for voluntary cash payments, within specified limits, to be used for the purchase of additional shares. Equity Incentive Plans On May 9, 2023, shareholders approved the 2023 Stock Incentive Plan, which authorizes Mid Penn to grant incentive stock options, nonqualified stock options, stock appreciation rights, restricted stock, deferred stock units and performance shares. The 2023 Plan was established for employees and directors of Mid Penn and the Bank, selected by the Compensation Committee of the Board of Directors, to incentivize the further success of the Company, and replaces the 2014 Restricted Stock Plan. The aggregate number of shares of common stock of the Company available for issuance under the Plan is 350,000 shares . As of March 31, 2024, a total of 217,514 restricted shares were granted under the 2014 Plan, of which 83,107 shares were unvested. The 2014 Plan shares granted and vested resulted in $302 thousand and $249 thousand in share-based compensation expense for the three months ended March 31, 2024 and 2023, respectively. Share-based compensation expense relating to restricted stock is calculated using grant date fair value and is recognized on a straight-line basis over the vesting periods of the awards. Restricted shares granted to employees vest in equal amounts on the anniversary of the grant date over the vesting period and the expense is a component of salaries and benefits expense on the Consolidated Statement of Income. The employee grant vesting period is determined by the terms of each respective grant, with vesting periods generally between one The following data shows the amounts used in computing basic and diluted earnings per common share: Three Months Ended March 31, (In thousands, except per share data) 2024 2023 Net income $ 12,133 $ 11,227 Weighted average common shares outstanding (basic) 16,567,902 15,886,186 Effect of dilutive unvested restricted stock grants 45,471 44,935 Weighted average common shares outstanding (diluted) 16,613,373 15,931,121 Basic earnings per common share $ 0.73 $ 0.71 Diluted earnings per common share 0.73 0.70 There were no antidilutive instruments at March 31, 2024 and 2023.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation For all periods presented, the accompanying consolidated financial statements include the accounts of Mid Penn Bancorp, Inc., its wholly-owned subsidiary, Mid Penn Bank, and four nonbank subsidiaries, MPB Financial Services, LLC, which includes MPB Wealth Management, LLC (which ceased operating during the first quarter of 2024) and MPB Risk Services, LLC, and MPB Launchpad Fund I, LLC. As of March 31, 2024, the accounts and activities of these nonbank subsidiaries were not material to warrant separate disclosure or segment reporting. As a result, Mid Penn has only one reportable segment for financial reporting purposes. All material intercompany accounts and transactions have been eliminated in consolidation. Certain information and disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. Mid Penn believes the information presented is not misleading, and the disclosures are adequate. For comparative purposes, the March 31, 2023 and December 31, 2023 balances have been reclassified, when necessary, to conform to the 2024 presentation. Such reclassifications had no impact on net income or total shareholders’ equity. In the opinion of management, all adjustments necessary for fair presentation of the periods presented have been reflected in the accompanying consolidated financial statements. All such adjustments are of a normal, recurring nature. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the 2023 Annual Report.
Use of Estimates	Use of Estimates - The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates. Material estimates subject to significant change include the allowance for credit losses, the expected cash flows and collateral values associated with loans that are individually evaluated for credit losses, the carrying value of other real estate owned ("OREO"), the fair value of financial instruments, business combination fair value computations, the valuation of goodwill and other intangible assets, stock-based compensation and deferred income tax assets.
Accounting Standards adopted and Updated Significant Accounting Policy	Accounting Standards adopted and Updated Significant Accounting Policy On January 1, 2023, the Corporation adopted ASU 2016-13, Financial Instruments - Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments , which replaced the incurred loss methodology, and is referred to as CECL. The measurement of expected credit losses under CECL is applicable to financial assets measured at amortized cost, including loans and HTM debt securities. It also applies to OBS credit exposures (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with ASC Topic 842. Prior to 2024, the provision for OBS credit losses was included in Other Expenses on the Statement of Income. As of March 31, 2024, the provision for OBS credit losses is included in Provision for Credit Losses on the Income Statement. Prior periods have been updated for presentation. All other significant accounting policies used in preparation of the Consolidated Financial Statements are disclosed in the 2023 Annual Report. Those significant accounting policies are unchanged at March 31, 2024. Accounting Standards Pending Adoption ASU No. 2023-02: The FASB issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. The amendments in this update permit reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. The amendments in this update also remove certain guidance for Qualified Affordable Housing Project investments and require the application of the delayed equity contribution guidance to all tax equity investments. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and must be applied on either a modified retrospective or a retrospective basis. Early adoption is permitted in any interim period, however if adopted in an interim period the entity shall adopt the amendments in this update as of the beginning of the fiscal year that includes the interim period. The Corporation does not expect the adoption of ASU No. 2023-02 to have a material impact on its consolidated financial statements. ASU 2023-06: The FASB issued ASU 2023-06, Disclosure Improvements - Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative . ASU 2023-06 amends the ASC to incorporate certain disclosure requirements from SEC Release No. 33-10532 - Disclosure Update and Simplification that was issued in 2018. The effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective, with early adoption prohibited. ASU 2023-06 is not expected to have a significant impact on our financial statements. ASU 2023-07: The FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures ASU 2023-07 amends the ASC to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The amendments in this update are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. ASU 2023-07 is not expected to have a significant impact on our financial statements. ASU 2023-09 : The FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures ASU 2023-09 amends the ASC to enhance income tax disclosures by requiring entities to disclose income taxes paid (net of refunds received) disaggregated by federal, state and foreign taxes. Additionally, entities are required to disclose amounts greater than 5% of the total income taxes paid to an individual jurisdiction The amendments are effective for annual periods beginning after December 15, 2025. ASU 2023-09 is not expected to have a significant impact on our financial statements. ASU 2024-01 —The FASB issued ASU 2024-01, Compensation - Stock Compensation (Topic 718): Scope application of profits interest and similar awards The amendments in the ASU apply to all reporting entities that account for profits interest awards as compensation to employees or nonemployees in return for goods or services. The amendments are effective for annual periods beginning after December 15, 2025, and interim periods within those annual periods. ASU 2024-01 is not expected to have a significant impact on our financial statements. ASU 2024-02 : The FASB issued ASU 2024-02, Codification Improvements—Amendments to Remove References to the Concepts Statements This ASU contains amendments to the Codification that remove references to various FASB Concepts Statements. The amendments are effective for fiscal years beginning after Dec. 15, 2025. Early adoption is permitted. ASU 2024-02 is not expected to have a significant impact on our financial statements.
AFS and HTM Securities	AFS Securities ASU 2016-13 makes targeted improvements to the accounting for credit losses on AFS securities. The concept of other-than-temporarily impaired has been replaced with the allowance for credit losses. Unlike HTM securities, AFS securities are evaluated on an individual level and pooling of securities is not allowed. Quarterly, Mid Penn evaluates if any security has a fair value less than its amortized cost. Once these securities are identified, in order to determine whether a decline in fair value resulted from a credit loss or other factors, Mid Penn performs further analysis as outlined below: • Review the extent to which the fair value is less than the amortized cost and observe the security’s lowest credit rating as reported by third-party credit ratings companies. • The securities that violate the credit loss triggers above would be subjected to additional analysis that may include, but is not limited to: changes in market interest rates, changes in securities credit ratings, security type, service area economic factors, financial performance of the issuer/or obligor of the underlying issue and third-party guarantee. • If Mid Penn determines that a credit loss exists, the credit portion of the allowance will be measured using a DCF analysis using the effective interest rate as of the security’s purchase date. The amount of credit loss Mid Penn records will be limited to the amount by which the amortized cost exceeds the fair value. The DCF analysis utilizes contractual maturities, as well as third-party credit ratings and cumulative default rates published annually by a reputable third-party. HTM Securities ASU 2016-13 requires institutions to measure expected credit losses on financial assets carried at amortized cost on a collective or pool basis when similar risks exist. Mid Penn uses several levels of segmentation in order to measure expected credit losses: • The portfolio is segmented into agency and non-agency securities. • The non-agency securities are separated into state and political subdivision obligations and corporate debt securities. Each individual segment is categorized by third-party credit ratings.
Collateral Dependent Loans	Collateral-Dependent Loans A financial asset is considered to be collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For all classes of financial assets deemed collateral-dependent, Mid Penn elected the practical expedient to estimate expected credit losses based on the collateral’s fair value less cost to sell. In most cases, Mid Penn records a partial charge-off to reduce the loan’s carrying value to the collateral’s fair value less cost to sell. Substantially all of the collateral supporting collateral-dependent financial assets consists of various types of real estate, including residential properties; commercial properties such as retail centers, office buildings, and lodging; agriculture land; and vacant land. Allowance for Credit Losses, effective January 1, 2023 Mid Penn’s ACL - loans methodology is based upon guidance within FASB ASC Subtopic 326-20, as well as regulatory guidance from the FDIC, its primary federal regulator. The ACL - loans is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Credit quality within the loan portfolio is continuously monitored by management and is reflected within the ACL - loans. The ACL - loans is an estimate of expected losses inherent within Mid Penn’s existing loan portfolio. The ACL - loans is adjusted through the PCL and reduced by the charge off of loan amounts, net of recoveries. The loan loss estimation process involves procedures to appropriately consider the unique characteristics of Mid Penn’s loan portfolio segments. When computing allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history and other credit trends and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. Evaluations of the portfolio and individual credits are inherently subjective, as they require estimates, assumptions and judgments as to the facts and circumstances of particular situations. Determining the appropriateness of the allowance is complex and requires judgement by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the ACL and credit loss expense. Mid Penn estimates the ACL using relevant available information, from internal and external sources, relating to past events, current conditions and reasonable and supportable forecasts. Mid Penn uses a third-party software application to calculate the quantitative portion of the ACL using a methodology and assumptions specific to each loan pool. The qualitative portion of the allowance is based on general economic conditions and other internal and external factors affecting Mid Penn as a whole, as well as specific loans. Factors considered include the following: lending process, concentrations of credit, and credit quality. The quantitative and qualitative portions of the allowance are added together to determine the total ACL, which reflects management’s expectations of future conditions based on reasonable and supportable forecasts. The methodology for estimating the amount of expected credit losses reported in the ACL has two basic components: a collective, or pooled, component for estimated expected credit losses for pools of loans that share similar risk characteristics, and an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans. In estimating the ACL for the collective component, loans are segregated into loan pools based on loan purpose codes and similar risk characteristics. The commercial real estate and residential mortgage loan portfolio segments include loans for both commercial and residential properties that are secured by real estate. The underwriting process for these loans includes analysis of the financial position and strength of both the borrower and, if applicable, guarantor, experience with similar projects in the past, market demand and prospects for successful completion of the proposed project within the established budget and schedule, values of underlying collateral, availability of permanent financing, maximum loan-to-value ratios, minimum equity requirements, acceptable amortization periods and minimum debt service coverage requirements, based on property type. The borrower’s financial strength and capacity to repay their obligations remain the primary focus of underwriting. Financial strength is evaluated based upon analytical tools that consider historical and projected cash flows and performance, in addition to analysis of the proposed project for income-producing properties. Additional support offered by guarantors is also considered when applicable. Ultimate repayment of these loans is sensitive to interest rate changes, general economic conditions, liquidity and availability of long-term financing. The commercial and industrial loan portfolio segment includes commercial loans made to many types of businesses for various purposes, such as short-term working capital loans that are usually secured by accounts receivable and inventory, equipment and fixed asset purchases that are secured by those assets, and term financing for those within Mid Penn’s geographic markets. Mid Penn’s credit underwriting process for commercial and industrial loans includes analysis of historical and projected cash flows and performance, evaluation of financial strength of both borrowers and guarantors as reflected in current and detailed financial information, and evaluation of underlying collateral to support the credit. The consumer loan portfolio segment is comprised of loans which are underwritten after evaluating a borrower’s capacity, credit and collateral. Several factors are considered when assessing a borrower’s capacity, including the borrower’s employment, income, current debt, assets and level of equity in the property. Credit is assessed using a credit report that provides credit scores and the borrower’s current and past information about their credit history. Loan-to-value and debt-to-income ratios, loan amount and lien position are also considered in assessing whether to originate a loan. These borrowers are particularly susceptible to downturns in economic trends, such as conditions that negatively affect housing prices and demand and levels of unemployment. Mid Penn utilizes a DCF method to estimate the quantitative portion of the allowance for credit losses for loan pools. The DCF is based off of historical losses, including peer data, which is correlated to national unemployment and GDP. The PD and LGD measures are used in conjunction with prepayment data as inputs into the DCF model to calculate the cash flows at the individual loan level. Contractual cash flows based on loan terms are adjusted for PD, LGD and prepayments to derive loss cash flows. These loss cash flows are discounted by the loan’s coupon rate to arrive at the discounted cash flow based quantitative loss. The prepayment studies are updated quarterly by a third-party for each applicable pool. Mid Penn determined that reasonable and supportable forecasts could be made for a twelve-month period for all of its loan pools. To the extent the lives of the loans in the LHFI portfolio extend beyond this forecast period, Mid Penn uses a reversion period of four quarters and reverts to the historical mean on a straight-line basis over the remaining life of the loans. Qualitative factors used in the ACL methodology include the following: • Lending process • Concentrations of credit • Peer Group Divergence The ACL for individual loans, such as non-accrual and PCD, that do not share risk characteristics with other loans is measured as the difference between the discounted value of expected future cash flows, based on the effective interest rate at origination, and the amortized cost basis of the loan, or the net realizable value. The ACL is the difference between the loan’s net realizable value and its amortized cost basis (net of previous charge-offs and deferred loan fees and costs), except for collateral-dependent loans. A loan is collateral dependent when the borrower is experiencing financial difficulty and repayment of the loan is expected to be provided substantially through the sale of the collateral. The expected credit loss for collateral-dependent loans is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral, adjusted for the estimated cost to sell. Fair value estimates for collateral-dependent loans are derived from appraised values based on the current market value or the "as is" value of the collateral, normally from recently received and reviewed appraisals. Current appraisals are ordered on a regular basis based on the inspection date or more often if market conditions necessitate. Appraisals are obtained from state-certified appraisers and are based on certain assumptions, which may include construction or development status and the highest and best use of the property. These appraisals are reviewed by Mid Penn’s Real Estate Administration Group to ensure they are acceptable, and values are adjusted down for costs associated with asset disposal. If the calculated expected credit loss is determined to be permanent or not recoverable, the amount of the expected credit loss is charged off. Mid Penn may also purchase loans or acquire loans through a business combination. At the purchase or acquisition date, loans are evaluated to determine whether there has been more than insignificant credit deterioration since origination. Loans that have experienced more than insignificant credit deterioration since origination are referred to as PCD loans. In its evaluation of whether a loan has experienced more than insignificant deterioration in credit quality since origination, Mid Penn takes into consideration loan grades, past due and nonaccrual status. Mid Penn may also consider external credit rating agency ratings for borrowers and for non-commercial loans, FICO score or band, probability of default levels, and number of times past due. At the purchase or acquisition date, the amortized cost basis of PCD loans is equal to the purchase price and an initial estimate of credit losses. The initial recognition of expected credit losses on PCD loans has no impact on net income. When the initial measurement of expected credit losses on PCD loans is calculated on a pooled loan basis, the expected credit losses are allocated to each loan within the pool. Any difference between the initial amortized cost basis and the unpaid principal balance of the loan represents a noncredit discount or premium, which is accreted (or amortized) into interest income over the life of the loan. Subsequent changes to the ACL on PCD loans are recorded through the PCL. For purchased loans that are not deemed to have experienced more than insignificant credit deterioration since origination and are therefore not deemed PCD, any discounts or premiums included in the purchase price are accreted (or amortized) over the contractual life of the individual loan. Loans are charged off against the ACL, with any subsequent recoveries credited back to the ACL account. Expected recoveries may not exceed the aggregate of amounts previously charged off and expected to be charged off.
Fair Value Measurement	The Corporation uses estimates of fair value in applying various accounting standards for its consolidated financial statements on either a recurring or non-recurring basis. Fair value is defined as the price to sell an asset or transfer a liability in an orderly transaction between willing and able market participants. Mid Penn groups its assets and liabilities measured at fair value in three hierarchy levels, based on the observability and transparency of the inputs. The fair value hierarchy is as follows: Level 1 - Inputs that represent quoted prices for identical instruments in active markets. Level 2 - Inputs that represent quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability. Level 3 - Inputs that are largely unobservable, as little or no market data exists for the instrument being valued.

Business Combination (Tables)

Business Combination (Tables)	3 Months Ended
	Mar. 31, 2024
Business Combinations [Abstract]
Summary of the Final Estimated Fair Value of the Assets Acquired and Liabilities and Equity Assumed	Estimated fair values of the assets acquired and liabilities assumed in the Brunswick Acquisition as of the closing date are as follows: (In thousands) Assets acquired: Cash and cash equivalents $ 21,029 Federal funds sold 7,604 Investment securities 2,423 Loans 324,471 Goodwill 12,800 Core deposit intangible 999 Premises and equipment 4,568 Cash surrender value of life insurance 3,361 Deferred income taxes 6,393 Accrued interest receivable 1,171 Other assets 5,884 Total assets acquired 390,703 Liabilities assumed: Deposits: Noninterest-bearing demand 60,888 Interest-bearing demand 11,767 Money Market 47,362 Savings 14,203 Time 147,163 Long-term debt 60,136 Accrued interest payable 1,911 Other liabilities 1,613 Total liabilities assumed 345,043 Consideration paid $ 45,660 Cash paid $ 27,565 Fair value of common stock issued 18,095

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Securities Financing Transactions Disclosures [Abstract]
Unrealized Gain (Loss) on Investments	The amortized cost and estimated fair value of investment securities for the periods presented: March 31, 2024 (In thousands) Amortized Gross Gross Unrealized Estimated Available-for-sale U.S. Treasury and U.S. government agencies $ 36,664 $ — $ 1,174 $ 35,490 Mortgage-backed U.S. government agencies 165,402 — 18,637 146,765 State and political subdivision obligations 4,326 — 693 3,633 Corporate debt securities 35,737 — 3,993 31,744 Total available-for-sale debt securities 242,129 — 24,497 217,632 Held-to-maturity U.S. Treasury and U.S. government agencies $ 245,839 $ — $ 30,821 $ 215,018 Mortgage-backed U.S. government agencies 42,376 — 5,869 36,507 State and political subdivision obligations 83,318 2 6,958 76,362 Corporate debt securities 25,465 — 2,148 23,317 Total held-to-maturity debt securities 396,998 2 45,796 351,204 Total $ 639,127 $ 2 $ 70,293 $ 568,836 December 31, 2023 (In thousands) Amortized Gross Gross Unrealized Estimated Available-for-sale U.S. Treasury and U.S. government agencies $ 36,637 $ — $ 988 $ 35,649 Mortgage-backed U.S. government agencies 169,184 — 16,501 152,683 State and political subdivision obligations 4,332 — 686 3,646 Corporate debt securities 35,733 — 4,156 31,577 Total available-for-sale debt securities $ 245,886 $ — $ 22,331 $ 223,555 Held-to-maturity U.S. Treasury and U.S. government agencies $ 245,805 $ 2 $ 28,676 $ 217,131 Mortgage-backed U.S. government agencies 43,818 — 5,523 38,295 State and political subdivision obligations 84,035 11 6,486 77,560 Corporate debt securities 25,470 — 935 24,535 Total held-to-maturity debt securities 399,128 13 41,620 357,521 Total $ 645,014 $ 13 $ 63,951 $ 581,076
Schedule of Fair Value and Unrealized Loss on Debt Security Investments in a Continuous Unrealized Loss Position	The following tables present gross unrealized losses and fair value of debt investment securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position for the periods presented: (Dollars in thousands) Less Than 12 Months 12 Months or More Total March 31, 2024 Number Estimated Gross Number Estimated Gross Number Estimated Gross Available-for-sale debt securities: U.S. Treasury and U.S. government agencies — $ — $ — 19 $ 35,490 $ 1,174 19 $ 35,490 $ 1,174 Mortgage-backed U.S. government agencies — — — 93 146,765 18,637 93 146,765 18,637 State and political subdivision obligations — — — 8 3,633 693 8 3,633 693 Corporate debt securities — — — 18 31,744 3,993 18 31,744 3,993 Total available-for-sale debt securities — $ — $ — 138 $ 217,632 $ 24,497 138 $ 217,632 $ 24,497 Held-to-maturity debt securities: U.S. Treasury and U.S. government agencies — — — 145 215,018 30,821 145 215,018 30,821 Mortgage-backed U.S. government agencies — — — 64 36,507 5,869 64 36,507 5,869 State and political subdivision obligations 16 5,846 86 177 70,201 6,872 193 76,047 6,958 Corporate debt securities — — — 15 23,317 2,148 15 23,317 2,148 Total held-to-maturity debt securities 16 5,846 86 401 345,043 45,710 417 350,889 45,796 Total 16 $ 5,846 $ 86 539 $ 562,675 $ 70,207 555 $ 568,521 $ 70,293 (Dollars in thousands) Less Than 12 Months 12 Months or More Total December 31, 2023 Number Estimated Gross Number Estimated Gross Number Estimated Gross Available-for-sale securities: U.S. Treasury and U.S. government agencies — $ — $ — 19 $ 35,649 $ 988 19 $ 35,649 $ 988 Mortgage-backed U.S. government agencies 1 4,015 26 92 148,668 16,475 93 152,683 16,501 State and political subdivision obligations — — — 8 3,646 686 8 3,646 686 Corporate debt securities 1 410 90 17 31,167 4,066 18 31,577 4,156 Total available-for-sale securities 2 4,425 116 136 219,130 22,215 138 223,555 22,331 Held-to-maturity securities: U.S. Treasury and U.S. government agencies 1 $ 2,002 $ — 144 $ 215,129 $ 28,676 145 $ 217,131 $ 28,676 Mortgage-backed U.S. government agencies — — — 64 38,295 5,523 64 38,295 5,523 State and political subdivision obligations 25 8,729 63 170 68,831 6,423 195 77,560 6,486 Corporate debt securities 1 936 57 14 23,599 878 15 24,535 935 Total held to maturity securities 27 11,667 120 392 345,854 41,500 419 357,521 41,620 Total 29 $ 16,092 $ 236 528 $ 564,984 $ 63,715 557 $ 581,076 $ 63,951
Investments Classified by Contractual Maturity Date	The table below illustrates the contractual maturity of debt investment securities at amortized cost and estimated fair value. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay with or without call or prepayment penalties. (In thousands) Available-for-sale Held-to-maturity March 31, 2024 Amortized Fair Amortized Fair Due in 1 year or less $ 12,496 $ 12,380 $ 13,047 $ 12,906 Due after 1 year but within 5 years 34,425 32,819 125,456 116,182 Due after 5 years but within 10 years 27,475 23,743 195,525 168,141 Due after 10 years 2,331 1,925 20,594 17,468 76,727 70,867 354,622 314,697 Mortgage-backed securities 165,402 146,765 42,376 36,507 $ 242,129 $ 217,632 $ 396,998 $ 351,204

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses - Loans (Tables)	3 Months Ended
	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Financing Receivable Credit Quality Indicators	Loans, net of unearned income, are summarized as follows by portfolio segment: (In thousands) March 31, 2024 December 31, 2023 Commercial real estate CRE Nonowner Occupied $ 1,174,774 $ 1,149,553 CRE Owner Occupied 622,574 629,904 Multifamily 334,952 309,059 Farmland 212,018 212,690 Total Commercial real estate 2,344,318 2,301,206 Commercial and industrial 671,395 675,079 Construction Residential Construction 103,861 92,843 Other Construction 383,428 362,624 Total Construction 487,289 455,467 Residential mortgage 1-4 Family 1st Lien 334,557 339,142 1-4 Family Rental 340,052 341,937 HELOC and Junior Liens 132,703 132,795 Total Residential Mortgage 807,312 813,874 Consumer 7,135 7,166 Total loans $ 4,317,449 $ 4,252,792 March 31, 2024 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized (In thousands) 2024 2023 2022 2021 2020 Prior Total Commercial real estate Pass $ 49,466 $ 289,970 $ 568,000 $ 372,639 $ 293,680 $ 688,117 $ 43,525 $ 2,305,397 Special mention — 188 434 — — 16,407 191 17,220 Substandard or lower — — 2,990 206 3,146 15,313 46 21,701 Total commercial real estate 49,466 290,158 571,424 372,845 296,826 719,837 43,762 2,344,318 Commercial and industrial Pass 33,909 147,232 97,313 62,551 28,200 104,941 189,231 663,377 Special mention — 79 61 282 — 2,280 2,272 4,974 Substandard or lower — — — 591 — 1,938 515 3,044 Total commercial and industrial 33,909 147,311 97,374 63,424 28,200 109,159 192,018 671,395 Construction Pass 13,362 164,703 185,710 56,475 20,419 16,024 28,785 485,478 Special mention — — — — 1,811 — — 1,811 Substandard or lower — — — — — — — — Total construction 13,362 164,703 185,710 56,475 22,230 16,024 28,785 487,289 Residential mortgage Performing 25,512 145,753 148,963 109,236 87,274 197,768 84,656 799,162 Non-performing — 178 — 79 1,666 6,129 98 8,150 Total residential mortgage 25,512 145,931 148,963 109,315 88,940 203,897 84,754 807,312 Gross charge offs — — (21) — — (7) — (28) Net charge offs — — (21) — — (7) — (28) Consumer Performing 1,550 1,251 622 591 221 281 2,619 7,135 Non-performing — — — — — — — — Total consumer 1,550 1,251 622 591 221 281 2,619 7,135 Gross charge offs (16) — (2) — — (4) — (22) Current period recoveries 5 — — — — 1.00 — 6 Net charge offs (11) — (2) — — (3) — (16) Total Pass $ 96,737 $ 601,905 $ 851,023 $ 491,665 $ 342,299 $ 809,082 $ 261,541 $ 3,454,252 Special mention — 267 495 282 1,811 18,687 2,463 24,005 Substandard or lower — — 2,990 797 3,146 17,251 561 24,745 Performing 27,062 147,004 149,585 109,827 87,495 198,049 87,275 806,297 Nonperforming — 178 — 79 1,666 6,129 98 8,150 Total $ 123,799 $ 749,354 $ 1,004,093 $ 602,650 $ 436,417 $ 1,049,198 $ 351,938 $ 4,317,449 December 31, 2023 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Amortized (In thousands) 2023 2022 2021 2020 2019 Prior Total Commercial real estate Pass $ 271,655 $ 556,801 $ 386,911 $ 297,746 $ 178,434 $ 528,326 $ 38,261 $ 2,258,134 Special mention 194 — — — 6,009 10,482 186 16,871 Substandard or lower — 5,209 208 3,162 229 17,345 48 26,201 Total commercial real estate 271,849 562,010 387,119 300,908 184,672 556,153 38,495 2,301,206 Gross charge offs — — — — — (16) — (16) Net charge offs — — — — — (16) — (16) Commercial and industrial Pass 158,824 106,714 68,448 29,961 50,206 57,892 188,714 660,759 Special mention — 89 2,224 — 227 2,200 4,391 9,131 Substandard or lower — — 662 — — 1,978 2,549 5,189 Total commercial and industrial 158,824 106,803 71,334 29,961 50,433 62,070 195,654 675,079 Gross charge offs — (100) — (111) — (27) — (238) Net charge offs — (100) — (111) — (27) — (238) Construction Pass 153,596 181,214 54,658 22,357 10,247 5,856 23,262 451,190 Special mention — — — 1,447 — — — 1,447 Substandard or lower — 573 — — — 2,257 — 2,830 Total construction 153,596 181,787 54,658 23,804 10,247 8,113 23,262 455,467 Residential mortgage Performing 158,634 153,203 111,610 90,382 27,863 178,898 87,723 808,313 Non-performing — — 93 1,470 — 3,998 — 5,561 Total residential mortgage 158,634 153,203 111,703 91,852 27,863 182,896 87,723 813,874 Gross charge offs — — — — — (13) — (13) Current period recoveries — — — — — 38 — 38 Net recoveries — — — — — 25 — 25 Consumer Performing 2,361 754 649 273 223 103 2,803 7,166 Total consumer 2,361 754 649 273 223 103 2,803 7,166 Gross charge offs (86) — (10) (9) — (30) — (135) Current period recoveries 26 — — 1 — 5 — 32 Net charge offs (60) — (10) (8) — (25) — (103) Total Pass $ 584,075 $ 844,729 $ 510,017 $ 350,064 $ 238,887 $ 592,074 $ 250,237 $ 3,370,083 Special mention 194 89 2,224 1,447 6,236 12,682 4,577 27,449 Substandard or lower — 5,782 870 3,162 229 21,580 2,597 34,220 Performing 160,995 153,957 112,259 90,655 28,086 179,001 90,526 815,479 Nonperforming — — 93 1,470 — 3,998 — 5,561 Total $ 745,264 $ 1,004,557 $ 625,463 $ 446,798 $ 273,438 $ 809,335 $ 347,937 $ 4,252,792
Loan Portfolio Summarized by the Past Due Status	The performance and credit quality of the loan portfolio is also monitored by analyzing the age of the loans receivable as determined by the length of time a recorded payment is past due. The classes of the loan portfolio summarized by the past due status as of March 31, 2024 and December 31, 2023, are summarized as follows: (In thousands) 30-59 60-89 Greater Total Past Current Total Loans Loans March 31, 2024 Commercial real estate $ 9,647 $ — $ 778 $ 10,425 $ 2,333,893 $ 2,344,318 $ — Commercial and industrial — 87 1,771 1,858 669,537 671,395 — Construction — — — — 487,289 487,289 — Residential mortgage 1,328 387 2,201 3,916 803,396 807,312 — Consumer 18 — 25 43 7,092 7,135 25 Total $ 10,993 $ 474 $ 4,775 $ 16,242 $ 4,301,207 $ 4,317,449 $ 25 (In thousands) 30-59 60-89 Greater Total Past Current Total Loans Loans December 31, 2023 Commercial real estate $ 5,073 $ 682 $ 2,974 $ 8,729 $ 2,292,477 $ 2,301,206 $ — Commercial and industrial 638 24 1,270 1,932 673,147 675,079 — Construction — 270 2,559 2,829 452,638 455,467 — Residential mortgage 4,648 267 2,518 7,433 806,441 813,874 — Consumer 41 31 — 72 7,094 7,166 — Total $ 10,400 $ 1,274 $ 9,321 $ 20,995 $ 4,231,797 $ 4,252,792 $ —
Non-accrual Loans by Classes of the Loan Portfolio Including Loans Acquired With Credit Deterioration	Nonaccrual loans by loan portfolio class, including loans acquired with credit deterioration, as of March 31, 2024 and December 31, 2023 are summarized as follows: March 31, 2024 December 31, 2023 (In thousands) With a Related Allowance Without a Related Allowance Total With a Related Allowance Without a Related Allowance Total Commercial real estate $ 449 $ 4,139 $ 4,588 $ 454 $ 6,133 $ 6,587 Commercial and industrial 1,202 1,156 2,358 1,222 64 1,286 Construction — — — — 2,559 2,559 Residential mortgage 41 3,402 3,443 2 3,782 3,784 Consumer — — — — — — $ 1,692 $ 8,697 $ 10,389 $ 1,678 $ 12,538 $ 14,216
Allowance and Recorded Investment in Financing Receivables	The following tables present the activity in the ACL - loans by portfolio segment for the three months ended March 31, 2024 and three months ended March 31, 2023: (In thousands) As of March 31, 2024 Balance at Charge offs Recoveries Net loans (charged off) recovered (Benefit)/Provision for credit losses Balance at Commercial Real Estate CRE Nonowner Occupied 10,267 — — — 150 10,417 CRE Owner Occupied 5,646 — — — (44) 5,602 Multifamily 2,202 — — — 168 2,370 Farmland 2,064 — — — (62) 2,002 Commercial and industrial 7,131 — — — (631) 6,500 Construction Residential Construction 1,256 — — — (80) 1,176 Other Construction 2,146 — — — 25 2,171 Residential Mortgage 1-4 Family 1st Lien 1,207 (7) — (7) 71 1,271 1-4 Family Rental 1,859 (21) — (21) (299) 1,539 HELOC and Junior Liens 389 — — — 68 457 Consumer 20 (22) 6 (16) 15 19 Total 34,187 (50) 6 (44) (619) 33,524 (In thousands) Balance at CECL Impact Charge offs Recoveries Net loans (charged off) recovered Provision/(Benefit) for credit losses Balance at Commercial Real Estate CRE Nonowner Occupied $ 8,284 $ 259 $ — $ — $ — $ (368) $ 8,175 CRE Owner Occupied 2,916 91 (16) — (16) 88 3,079 Multifamily 1,111 35 — — — 13 1,159 Farmland 831 26 — — — 42 899 Commercial and industrial 4,593 6,601 (111) — (111) 186 11,269 Construction Residential Construction — 1,270 — — — 153 1,423 Other Construction — 1,931 — — — 277 2,208 Residential Mortgage 1-4 Family 1st Lien 370 1,307 (4) — (4) (317) 1,356 1-4 Family Rental 288 731 — 30 30 17 1,066 HELOC and Junior Liens 661 (230) — — — 21 452 Consumer 29 154 (19) 7 (12) 8 179 Unallocated (126) (244) — — — 370 — Total $ 18,957 $ 11,931 $ (150) $ 37 $ (113) $ 490 $ 31,265 The following table presents the ACL for loans and the amortized cost basis of the loans by the measurement methodology used as of March 31, 2024 and December 31, 2023: (In thousands) ACL - Loans Loans March 31, 2024 Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total ACL - Loans Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total Loans Commercial real estate CRE Nonowner Occupied $ 10,061 $ 356 $ 10,417 $ 1,172,396 $ 2,378 $ 1,174,774 CRE Owner Occupied 5,602 — 5,602 620,534 2,040 622,574 Multifamily 2,351 19 2,370 334,781 171 334,952 Farmland 2,002 — 2,002 212,018 — 212,018 Commercial and industrial 5,761 739 6,500 669,037 2,358 671,395 Construction Residential Construction 1,176 — 1,176 103,861 — 103,861 Other Construction 2,171 — 2,171 383,428 — 383,428 Residential mortgage 1-4 Family 1st Lien 1,271 — 1,271 332,822 1,735 334,557 1-4 Family Rental 1,535 4 1,539 339,696 356 340,052 HELOC and Junior Liens 457 — 457 131,351 1,352 132,703 Consumer 19 — 19 7,135 — 7,135 Total $ 32,406 $ 1,118 $ 33,524 $ 4,307,059 $ 10,390 $ 4,317,449 (In thousands) ACL - Loans Loans December 31, 2023 Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total ACL - Loans Collectively Evaluated for Credit Loss Individually Evaluated for Credit Loss Total Loans Commercial real estate CRE Nonowner Occupied $ 9,906 $ 361 $ 10,267 $ 1,145,048 $ 4,505 $ 1,149,553 CRE Owner Occupied 5,646 — 5,646 627,995 1,909 629,904 Multifamily 2,190 12 2,202 308,886 173 309,059 Farmland 2,064 — 2,064 212,690 — 212,690 Commercial and industrial 6,419 712 7,131 673,793 1,286 675,079 Construction Residential Construction 1,256 — 1,256 92,270 573 92,843 Other Construction 2,146 — 2,146 360,368 2,256 362,624 Residential mortgage 1-4 Family 1st Lien 1,207 — 1,207 337,267 1,875 339,142 1-4 Family Rental 1,857 2 1,859 341,236 701 341,937 HELOC and Junior Liens 389 — 389 131,587 1,208 132,795 Consumer 20 — 20 7,166 — 7,166 Total $ 33,100 $ 1,087 $ 34,187 $ 4,238,306 $ 14,486 $ 4,252,792
Troubled Debt Restructurings	Information related to loans modified (by type of modification), whereby the borrower was experiencing financial difficulty at the time of modification, is set forth in the following table: (In thousands) Interest Only Term Extension Combination: Total % of Total Class of Financing Receivable Three months ended March 31, 2024 Residential Mortgage $ — $ — $ 92 $ 92 0.01 % Total $ — $ — $ 92 $ 92 0.01 % (In thousands) Interest Only Term Extension Combination: Total % of Total Class of Financing Receivable Three months ended March 31, 2023 Commercial real estate $ 51 $ — $ 180 $ 231 0.04 % Total $ 51 $ — $ 180 $ 231 0.04 %

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2024
Deposits [Abstract]
Deposit Liabilities, Type	Deposits consisted of the following as of March 31, 2024 and December 31, 2023: (Dollars in thousands) March 31, 2024 % of Total Deposits December 31, 2023 % of Total Deposits Noninterest-bearing demand deposits $ 807,861 18.4 % $ 801,312 18.4 % Interest-bearing demand deposits 923,120 21.1 % 947,372 21.8 % Money market 874,833 20.0 % 850,674 19.6 % Savings 284,893 6.5 % 288,404 6.6 % Total demand and savings 2,890,707 66.0 % 2,887,762 66.4 % Time 1,488,398 34.0 % 1,458,450 33.6 % Total deposits $ 4,379,105 100.0 % $ 4,346,212 100.0 % Overdrafts $ 558 0.01 % $ 315 0.01 %
Time Deposits By Maturity Date Table	The scheduled maturities of time deposits at March 31, 2024 were as follows: Time Deposits (In thousands) Less than $250,000 $250,000 or more Maturing in 2024 $ 827,090 $ 279,833 Maturing in 2025 238,921 66,846 Maturing in 2026 38,245 3,463 Maturing in 2027 17,642 1,194 Maturing in 2028 11,241 572 Maturing thereafter 3,059 292 $ 1,136,198 $ 352,200

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amount and Fair Value of Mortgage Banking Derivative Financial Instruments	Information related to loan level swaps is set forth in the following table: March 31, 2024 December 31, 2023 (Dollars in thousands) Interest rate swaps on loans with customers Notional amount $ 201,405 $ 187,192 Weighted average remaining term (years) 5.92 6.24 Receive fixed rate (weighted average) 4.56 % 4.59 % Pay variable rate (weighted average) 7.48 % 7.50 % Estimated fair value (1) $ 11,315 $ 10,484 March 31, 2024 December 31, 2023 (Dollars in thousands) Interest rate swaps on loans with correspondents Notional amount $ 201,405 $ 187,192 Weighted average remaining term (years) 5.92 6.24 Receive variable rate (weighted average) 4.56 % 7.50 % Pay fixed rate (weighted average) 7.48 % 4.59 % Estimated fair value $ 11,315 $ 10,484 (1) The net amount of the estimated fair value is disclosed in Other Liabilities on the Consolidated Balance Sheet. Information related to cash flow hedges is set forth in the following table: March 31, 2024 December 31, 2023 (Dollars in thousands) Cash flow hedges Notional amount $ 190,000 $ 190,000 Weighted average remaining term (years) 1.97 2.22 Pay fixed rate (weighted average) 3.74 % 3.74 % Receive variable rate (weighted average) 4.07 % 4.07 % Estimated fair value $ 3,228 $ 1,460

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (Loss) Income (Tables)	3 Months Ended
	Mar. 31, 2024
Other Income and Expenses [Abstract]
Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes	The changes in each component of accumulated other comprehensive loss, net of taxes, are as follows: (I n thousands ) Unrealized Loss on Unrealized Defined Benefit Total Balance at December 31, 2023 $ (17,339) $ 820 $ (118) $ (16,637) OCI before reclassifications (1,711) 1,410 8 (293) Amounts reclassified from AOCI — — (17) (17) Balance at March 31, 2024 $ (19,050) $ 2,230 $ (127) (16,947) Balance at December 31, 2022 $ (19,327) $ — $ 111 $ (19,216) OCI before reclassifications 1,977 (128) 5 1,854 Amounts reclassified from AOCI — — (12) (12) Balance at March 31, 2023 $ (17,350) $ (128) $ 104 $ (17,374)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on a Recurring Basis	The following tables illustrate the assets measured at fair value on a recurring basis and reported on the Consolidated Balance Sheets. March 31, 2024 (In thousands) Level 1 Level 2 Level 3 Total Available-for-sale securities: U.S. Treasury and U.S. government agencies $ — $ 35,490 $ — $ 35,490 Mortgage-backed U.S. government agencies — 146,765 — 146,765 State and political subdivision obligations — 3,633 — 3,633 Corporate debt securities — 31,744 — 31,744 Equity securities 431 — — 431 Loans held for sale — 4,581 — 4,581 Other assets: Derivative assets — 14,543 — 14,543 Total $ 431 $ 236,756 $ — $ 237,187 December 31, 2023 (In thousands) Level 1 Level 2 Level 3 Total Available-for-sale securities: U.S. Treasury and U.S. government agencies $ — $ 35,649 $ — $ 35,649 Mortgage-backed U.S. government agencies — 152,683 — 152,683 State and political subdivision obligations — 3,646 — 3,646 Corporate debt securities — 31,577 — 31,577 Equity securities 438 — — 438 Loans held for sale — 3,855 — 3,855 Other assets: Derivative assets — 11,944 — 11,944 Total $ 438 $ 239,354 $ — $ 239,792
Fair Value Measurements, Nonrecurring	The following table illustrates Level 3 financial instruments measured at fair value on a nonrecurring basis: (In thousands) March 31, 2024 December 31, 2023 Individually evaluated loans, net of ACL $ 9,272 $ 13,399 Foreclosed assets held for sale 5,110 293
Fair Value, by Balance Sheet Grouping	The following tables summarize the carrying amount, fair value, and placement in the fair value hierarchy of Mid Penn's financial instruments as of the periods presented: March 31, 2024 Carrying Estimated Fair Value (In thousands) Level 1 Level 2 Level 3 Total Financial instruments - assets Cash and cash equivalents $ 68,085 $ 68,085 $ — $ — $ 68,085 Available-for-sale investment securities 217,632 — 217,632 — 217,632 Held-to-maturity investment securities 396,998 — 351,204 — 351,204 Equity securities 431 431 — — 431 Loans held for sale 4,581 — 4,581 — 4,581 Net loans 4,283,925 — — 4,285,266 4,285,266 Restricted investment in bank stocks 17,446 17,446 — — 17,446 Accrued interest receivable 26,975 26,975 — — 26,975 Derivative assets 14,543 — 14,543 — 14,543 Financial instruments - liabilities Deposits $ 4,379,105 $ — $ 4,368,088 $ — $ 4,368,088 Short-term borrowings 271,849 — 271,849 — 271,849 Long-term debt (1) 20,768 — 20,768 — 20,768 Subordinated debt 46,201 — 40,332 — 40,332 Accrued interest payable 16,330 16,330 — — 16,330 Derivative liabilities 11,315 — 11,315 — 11,315 (1) Long-term debt excludes finance lease obligations. December 31, 2023 Estimated Fair Value (In thousands) Carrying Level 1 Level 2 Level 3 Total Financial instruments - assets Cash and cash equivalents $ 96,763 $ 96,763 $ — $ — $ 96,763 Available-for-sale investment securities 223,555 — 223,555 — 223,555 Held-to-maturity investment securities 399,128 — 357,521 — 357,521 Equity securities 438 438 — — 438 Loans held for sale 3,855 — 3,855 — 3,855 Net loans 4,218,605 — — 4,221,926 4,221,926 Restricted investment in bank stocks 16,768 16,768 — — 16,768 Accrued interest receivable 25,820 25,820 — — 25,820 Derivative assets 11,944 — 11,944 — 11,944 Financial instruments - liabilities Deposits $ 4,346,212 $ — $ 4,337,723 $ — $ 4,337,723 Short-term debt 241,532 — 241,532 — 241,532 Long-term debt (1) 55,806 — 55,081 — 55,081 Subordinated debt 46,354 — 39,515 — 39,515 Accrued interest payable 14,257 14,257 — — 14,257 Derivative liabilities 10,484 — 10,484 — 10,484 (1) Long-term debt excludes finance lease obligations.

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2024
Maturities of Long-Term Debt [Abstract]
Long-term Debt Outstanding by Due Date	The following table presents a summary of long-term debt as of March 31, 2024 and December 31, 2023. (Dollars in thousands) March 31, 2024 December 31, 2023 FHLB fixed rate instruments: Due January 2024, 1.10% $ — $ 10,000 Due March 2024, 5.60% — 25,000 Due February 2026, 4.51% 20,000 20,000 Due August 2026, 4.80% 746 782 Due February 2027, 6.71% 22 24 Total FHLB fixed rate instruments 20,768 55,806 Lease obligations included in long-term debt 3,173 3,197 Total long-term debt $ 23,941 $ 59,003

Common Stock and Earnings Per_2

Common Stock and Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2024
Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following data shows the amounts used in computing basic and diluted earnings per common share: Three Months Ended March 31, (In thousands, except per share data) 2024 2023 Net income $ 12,133 $ 11,227 Weighted average common shares outstanding (basic) 16,567,902 15,886,186 Effect of dilutive unvested restricted stock grants 45,471 44,935 Weighted average common shares outstanding (diluted) 16,613,373 15,931,121 Basic earnings per common share $ 0.73 $ 0.71 Diluted earnings per common share 0.73 0.70

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details)	3 Months Ended
	Mar. 31, 2024 nonbankSubsidiary Segment
Accounting Policies [Abstract]
Number of nonbank subsidiaries | nonbankSubsidiary	4
Number of reportable segments | Segment	1

Business Combination - Narrativ

Business Combination - Narrative (Details) $ in Thousands	May 19, 2023 USD ($) branch shares	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Goodwill		$ 127,031	$ 127,031
Brunswick Bancorp Acquisition
Business Acquisition [Line Items]
Additional branches | branch	5
Equity interest issued or issuable, number of shares (in shares) | shares	849,510
Payments to acquire businesses gross	$ 27,565
Consideration transferred	45,700
Goodwill	12,800
Goodwill, expected tax deductible amount	0
Amount at purchase price	18,700
PCD Loans	336
Discount (premium)	2,400
Amount at par value	16,300
Provision expense	$ 2,000

Business Combination - Estimate

Business Combination - Estimated Fair Value of Assets Acquired (Details) - USD ($) $ in Thousands	May 19, 2023	Mar. 31, 2024	Dec. 31, 2023
Assets acquired:
Goodwill		$ 127,031	$ 127,031
Brunswick Bancorp Acquisition
Assets acquired:
Cash and cash equivalents	$ 21,029
Federal funds sold	7,604
Investment securities	2,423
Loans	324,471
Goodwill	12,800
Core deposit intangible	999
Premises and equipment	4,568
Cash surrender value of life insurance	3,361
Deferred income taxes	6,393
Accrued interest receivable	1,171
Other assets	5,884
Total assets acquired	390,703
Deposits:
Noninterest-bearing demand	60,888
Interest-bearing demand	11,767
Money Market	47,362
Savings	14,203
Time	147,163
Long-term debt	60,136
Accrued interest payable	1,911
Other liabilities	1,613
Total liabilities assumed	345,043
Consideration paid	45,660
Cash paid	27,565
Fair value of common stock issued	$ 18,095

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Securities Financing Transactions Disclosures [Abstract]
AFS accrued interest	$ 982
Held-to-maturity securities	396,998		$ 399,128
HTM accrued interest	2,200
Available-for-sale securities pledged as collateral	383,900		380,300
Letter of credit outstanding, amount	142,900		$ 153,500
Net gains	$ 0	$ 0
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable

Investment Securities - Unreali

Investment Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-sale
Amortized Cost	$ 242,129	$ 245,886
Gross Unrealized Gains	0	0
Gross Unrealized Losses	24,497	22,331
Estimated Fair Value	217,632	223,555
Held-to-maturity
Amortized Cost	396,998	399,128
Gross Unrealized Gains	2	13
Gross Unrealized Losses	45,796	41,620
Estimated Fair Value	351,204	357,521
Amortized Cost	639,127	645,014
Gross Unrealized Gains	2	13
Gross Unrealized Losses	70,293	63,951
Estimated Fair Value	568,836	581,076
U.S. Treasury and U.S. government agencies
Available-for-sale
Amortized Cost	36,664	36,637
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,174	988
Estimated Fair Value	35,490	35,649
Held-to-maturity
Amortized Cost	245,839	245,805
Gross Unrealized Gains	0	2
Gross Unrealized Losses	30,821	28,676
Estimated Fair Value	215,018	217,131
Mortgage-backed U.S. government agencies
Available-for-sale
Amortized Cost	165,402	169,184
Gross Unrealized Gains	0	0
Gross Unrealized Losses	18,637	16,501
Estimated Fair Value	146,765	152,683
Held-to-maturity
Amortized Cost	42,376	43,818
Gross Unrealized Gains	0	0
Gross Unrealized Losses	5,869	5,523
Estimated Fair Value	36,507	38,295
State and political subdivision obligations
Available-for-sale
Amortized Cost	4,326	4,332
Gross Unrealized Gains	0	0
Gross Unrealized Losses	693	686
Estimated Fair Value	3,633	3,646
Held-to-maturity
Amortized Cost	83,318	84,035
Gross Unrealized Gains	2	11
Gross Unrealized Losses	6,958	6,486
Estimated Fair Value	76,362	77,560
Corporate debt securities
Available-for-sale
Amortized Cost	35,737	35,733
Gross Unrealized Gains	0	0
Gross Unrealized Losses	3,993	4,156
Estimated Fair Value	31,744	31,577
Held-to-maturity
Amortized Cost	25,465	25,470
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2,148	935
Estimated Fair Value	$ 23,317	$ 24,535

Investment Securities - Schedul

Investment Securities - Schedule of Fair Value and Unrealized Loss on Debt Security Investments in a Continuous Unrealized Loss Position (Details)	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	2
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 4,425,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 116,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	138	136
Available-for-sale securities, 12 Months or More: Fair Value	$ 217,632,000	$ 219,130,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 24,497,000	$ 22,215,000
Available-for-sale securities, Total: Number of Securities | security	138	138
Available-for-sale securities, Total: Fair Value	$ 217,632,000	$ 223,555,000
Available-for-sale securities, Total: Unrealized Losses	$ 24,497,000	$ 22,331,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	16	27
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 5,846,000	$ 11,667,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 86,000	$ 120,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	401	392
Held-to-maturity securities, 12 Months or More: Fair Value	$ 345,043,000	$ 345,854,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 45,710,000	$ 41,500,000
Held-to-maturity securities, Total: Number of Securities | security	417	419
Held-to-maturity securities, Total: Fair Value	$ 350,889,000	$ 357,521,000
Held-to-maturity securities, Total: Unrealized Losses	$ 45,796,000	$ 41,620,000
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Number of Securities | security	16	29
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Fair Value	$ 5,846,000	$ 16,092,000
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 86,000	$ 236,000
Available-for-sale securities and Held-to-maturity securities,, 12 Months or More: Number of Securities | security	539	528
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Fair Value	$ 562,675,000	$ 564,984,000
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 70,207,000	$ 63,715,000
Available-for-sale securities and Held-to-maturity securities, Total: Number of Securities | security	555	557
Available-for-sale securities and Held-to-maturity securities, Total: Fair Value	$ 568,521,000	$ 581,076,000
Available-for-sale securities and Held-to-maturity securities, Total: Unrealized Losses	$ 70,293,000	$ 63,951,000
U.S. Treasury and U.S. government agencies
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	0
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 0
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 0
Available-for-sale securities, 12 Months or More: Number of Securities | security	19	19
Available-for-sale securities, 12 Months or More: Fair Value	$ 35,490,000	$ 35,649,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 1,174,000	$ 988,000
Available-for-sale securities, Total: Number of Securities | security	19	19
Available-for-sale securities, Total: Fair Value	$ 35,490,000	$ 35,649,000
Available-for-sale securities, Total: Unrealized Losses	$ 1,174,000	$ 988,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	0	1
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 0	$ 2,002,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 0	$ 0
Held-to-maturity securities, 12 Months or More: Number of Securities | security	145	144
Held-to-maturity securities, 12 Months or More: Fair Value	$ 215,018,000	$ 215,129,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 30,821,000	$ 28,676,000
Held-to-maturity securities, Total: Number of Securities | security	145	145
Held-to-maturity securities, Total: Fair Value	$ 215,018,000	$ 217,131,000
Held-to-maturity securities, Total: Unrealized Losses	$ 30,821,000	$ 28,676,000
Mortgage-backed U.S. government agencies
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	1
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 4,015,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 26,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	93	92
Available-for-sale securities, 12 Months or More: Fair Value	$ 146,765,000	$ 148,668,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 18,637,000	$ 16,475,000
Available-for-sale securities, Total: Number of Securities | security	93	93
Available-for-sale securities, Total: Fair Value	$ 146,765,000	$ 152,683,000
Available-for-sale securities, Total: Unrealized Losses	$ 18,637,000	$ 16,501,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	0	0
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 0	$ 0
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 0	$ 0
Held-to-maturity securities, 12 Months or More: Number of Securities | security	64	64
Held-to-maturity securities, 12 Months or More: Fair Value	$ 36,507,000	$ 38,295,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 5,869,000	$ 5,523,000
Held-to-maturity securities, Total: Number of Securities | security	64	64
Held-to-maturity securities, Total: Fair Value	$ 36,507,000	$ 38,295,000
Held-to-maturity securities, Total: Unrealized Losses	$ 5,869,000	$ 5,523,000
State and political subdivision obligations
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	0
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 0
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 0
Available-for-sale securities, 12 Months or More: Number of Securities | security	8	8
Available-for-sale securities, 12 Months or More: Fair Value	$ 3,633,000	$ 3,646,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 693,000	$ 686,000
Available-for-sale securities, Total: Number of Securities | security	8	8
Available-for-sale securities, Total: Fair Value	$ 3,633,000	$ 3,646,000
Available-for-sale securities, Total: Unrealized Losses	$ 693,000	$ 686,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	16	25
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 5,846,000	$ 8,729,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 86,000	$ 63,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	177	170
Held-to-maturity securities, 12 Months or More: Fair Value	$ 70,201,000	$ 68,831,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 6,872,000	$ 6,423,000
Held-to-maturity securities, Total: Number of Securities | security	193	195
Held-to-maturity securities, Total: Fair Value	$ 76,047,000	$ 77,560,000
Held-to-maturity securities, Total: Unrealized Losses	$ 6,958,000	$ 6,486,000
Corporate debt securities
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	1
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 410,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 90,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	18	17
Available-for-sale securities, 12 Months or More: Fair Value	$ 31,744,000	$ 31,167,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 3,993,000	$ 4,066,000
Available-for-sale securities, Total: Number of Securities | security	18	18
Available-for-sale securities, Total: Fair Value	$ 31,744,000	$ 31,577,000
Available-for-sale securities, Total: Unrealized Losses	$ 3,993,000	$ 4,156,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	0	1
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 0	$ 936,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 0	$ 57,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	15	14
Held-to-maturity securities, 12 Months or More: Fair Value	$ 23,317,000	$ 23,599,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 2,148,000	$ 878,000
Held-to-maturity securities, Total: Number of Securities | security	15	15
Held-to-maturity securities, Total: Fair Value	$ 23,317,000	$ 24,535,000
Held-to-maturity securities, Total: Unrealized Losses	$ 2,148,000	$ 935,000

Investment Securities - Investm

Investment Securities - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Due in 1 year or less	$ 12,496
Due after 1 year but within 5 years	34,425
Due after 5 years but within 10 years	27,475
Due after 10 years	2,331
Available-for-sale securities, amortized cost basis, Total	76,727
Amortized Cost	242,129	$ 245,886
Fair Value
Due in 1 year or less	12,380
Due after 1 year but within 5 years	32,819
Due after 5 years but within 10 years	23,743
Due after 10 years	1,925
Available-for-sale securities, fair value, Total	70,867
Available-for-sale securities, fair value	217,632	223,555
Amortized Cost
Due in 1 year or less	13,047
Due after 1 year but within 5 years	125,456
Due after 5 years but within 10 years	195,525
Due after 10 years	20,594
Held-to-maturity securities, amortized cost	354,622
Amortized Cost	396,998	399,128
Fair Value
Due in 1 year or less	12,906
Due after 1 year but within 5 years	116,182
Due after 5 years but within 10 years	168,141
Due after 10 years	17,468
Held-to-maturity securities, fair value	314,697
Held-to-maturity, Fair Value	351,204	$ 357,521
Mortgage-backed securities
Amortized Cost
Mortgage-backed securities	165,402
Fair Value
Mortgage-backed securities	146,765
Amortized Cost
Mortgage-backed securities	42,376
Fair Value
Mortgage-backed securities	$ 36,507

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Loans - Classes Of The Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	$ 4,317,449	$ 4,252,792
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	2,344,318	2,301,206
Commercial real estate | CRE Nonowner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	1,174,774	1,149,553
Commercial real estate | CRE Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	622,574	629,904
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	334,952	309,059
Commercial real estate | Farmland
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	212,018	212,690
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	671,395	675,079
Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	487,289	455,467
Construction | Residential Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	103,861	92,843
Construction | Other Construction
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	383,428	362,624
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	807,312	813,874
Residential mortgage | 1-4 Family 1st Lien
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	334,557	339,142
Residential mortgage | 1-4 Family Rental
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	340,052	341,937
Residential mortgage | HELOC and Junior Liens
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned interest	$ 132,703	$ 132,795

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Loans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Net deferred loan fees	$ 4,000		$ 4,200
Accrued interest	23,200
Interest income on nonaccrual loans	159	$ 182
Foreclosure proceedings in process	$ 892		$ 121
Weighted average term increase from modification	2 years
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Other assets

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Loans - Loan Portfolio Summarized By The Past Due Status (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	$ 4,317,449	$ 4,252,792
Loans Receivable > 90 Days and Accruing	25	0
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	16,242	20,995
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	10,993	10,400
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	474	1,274
Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	4,775	9,321
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	4,301,207	4,231,797
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	2,344,318	2,301,206
Loans Receivable > 90 Days and Accruing	0	0
Commercial real estate | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	10,425	8,729
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	9,647	5,073
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	682
Commercial real estate | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	778	2,974
Commercial real estate | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	2,333,893	2,292,477
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	671,395	675,079
Loans Receivable > 90 Days and Accruing	0	0
Commercial and industrial | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	1,858	1,932
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	638
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	87	24
Commercial and industrial | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	1,771	1,270
Commercial and industrial | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	669,537	673,147
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	487,289	455,467
Loans Receivable > 90 Days and Accruing	0	0
Construction | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	2,829
Construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	0
Construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	270
Construction | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	2,559
Construction | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	487,289	452,638
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	807,312	813,874
Loans Receivable > 90 Days and Accruing	0	0
Residential mortgage | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	3,916	7,433
Residential mortgage | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	1,328	4,648
Residential mortgage | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	387	267
Residential mortgage | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	2,201	2,518
Residential mortgage | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	803,396	806,441
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	7,135	7,166
Loans Receivable > 90 Days and Accruing	25	0
Consumer | Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	43	72
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	18	41
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	0	31
Consumer | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	25	0
Consumer | Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, net of unearned interest	$ 7,092	$ 7,094

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Loans - Non-accrual Loans by Classes of the Loan Portfolio Including Loans Acquired With Credit Deterioration (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	$ 1,692	$ 1,678
Financing receivable, no allowance	8,697	12,538
Financing receivable, recorded investment, nonaccrual status	10,389	14,216
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	449	454
Financing receivable, no allowance	4,139	6,133
Financing receivable, recorded investment, nonaccrual status	4,588	6,587
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	1,202	1,222
Financing receivable, no allowance	1,156	64
Financing receivable, recorded investment, nonaccrual status	2,358	1,286
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	0	0
Financing receivable, no allowance	0	2,559
Financing receivable, recorded investment, nonaccrual status	0	2,559
Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	41	2
Financing receivable, no allowance	3,402	3,782
Financing receivable, recorded investment, nonaccrual status	3,443	3,784
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	0	0
Financing receivable, no allowance	0	0
Financing receivable, recorded investment, nonaccrual status	$ 0	$ 0

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
2024	$ 123,799		$ 745,264
2023	749,354		1,004,557
2022	1,004,093		625,463
2021	602,650		446,798
2020	436,417		273,438
Prior	1,049,198		809,335
Revolving Loans Amortized Cost Basis	351,938		347,937
Loans, net of unearned interest	4,317,449		4,252,792
Gross charge offs
Total	(50)	$ (150)
Current period recoveries
Total	6	37
Performing Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	27,062		160,995
2023	147,004		153,957
2022	149,585		112,259
2021	109,827		90,655
2020	87,495		28,086
Prior	198,049		179,001
Revolving Loans Amortized Cost Basis	87,275		90,526
Loans, net of unearned interest	806,297		815,479
Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	178		0
2022	0		93
2021	79		1,470
2020	1,666		0
Prior	6,129		3,998
Revolving Loans Amortized Cost Basis	98		0
Loans, net of unearned interest	8,150		5,561
Pass
Financing Receivable, Recorded Investment [Line Items]
2024	96,737		584,075
2023	601,905		844,729
2022	851,023		510,017
2021	491,665		350,064
2020	342,299		238,887
Prior	809,082		592,074
Revolving Loans Amortized Cost Basis	261,541		250,237
Loans, net of unearned interest	3,454,252		3,370,083
Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		194
2023	267		89
2022	495		2,224
2021	282		1,447
2020	1,811		6,236
Prior	18,687		12,682
Revolving Loans Amortized Cost Basis	2,463		4,577
Loans, net of unearned interest	24,005		27,449
Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		5,782
2022	2,990		870
2021	797		3,162
2020	3,146		229
Prior	17,251		21,580
Revolving Loans Amortized Cost Basis	561		2,597
Loans, net of unearned interest	24,745		34,220
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
2024	49,466		271,849
2023	290,158		562,010
2022	571,424		387,119
2021	372,845		300,908
2020	296,826		184,672
Prior	719,837		556,153
Revolving Loans Amortized Cost Basis	43,762		38,495
Loans, net of unearned interest	2,344,318		2,301,206
Gross charge offs
2024			0
2023			0
2022			0
2021			0
2020			0
Prior			(16)
Revolving Loans Amortized Cost Basis			0
Total			(16)
Net charge offs
2024			0
2023			0
2022			0
2021			0
2020			0
Prior			(16)
Revolving Loans Amortized Cost Basis			0
Total			(16)
Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
2024	49,466		271,655
2023	289,970		556,801
2022	568,000		386,911
2021	372,639		297,746
2020	293,680		178,434
Prior	688,117		528,326
Revolving Loans Amortized Cost Basis	43,525		38,261
Loans, net of unearned interest	2,305,397		2,258,134
Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		194
2023	188		0
2022	434		0
2021	0		0
2020	0		6,009
Prior	16,407		10,482
Revolving Loans Amortized Cost Basis	191		186
Loans, net of unearned interest	17,220		16,871
Commercial real estate | Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		5,209
2022	2,990		208
2021	206		3,162
2020	3,146		229
Prior	15,313		17,345
Revolving Loans Amortized Cost Basis	46		48
Loans, net of unearned interest	21,701		26,201
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
2024	33,909		158,824
2023	147,311		106,803
2022	97,374		71,334
2021	63,424		29,961
2020	28,200		50,433
Prior	109,159		62,070
Revolving Loans Amortized Cost Basis	192,018		195,654
Loans, net of unearned interest	671,395		675,079
Gross charge offs
2024			0
2023			(100)
2022			0
2021			(111)
2020			0
Prior			(27)
Revolving Loans Amortized Cost Basis			0
Total	0	(111)	(238)
Current period recoveries
Total	0	0
Net charge offs
2024			0
2023			(100)
2022			0
2021			(111)
2020			0
Prior			(27)
Revolving Loans Amortized Cost Basis			0
Total			(238)
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
2024	33,909		158,824
2023	147,232		106,714
2022	97,313		68,448
2021	62,551		29,961
2020	28,200		50,206
Prior	104,941		57,892
Revolving Loans Amortized Cost Basis	189,231		188,714
Loans, net of unearned interest	663,377		660,759
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	79		89
2022	61		2,224
2021	282		0
2020	0		227
Prior	2,280		2,200
Revolving Loans Amortized Cost Basis	2,272		4,391
Loans, net of unearned interest	4,974		9,131
Commercial and industrial | Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		0
2022	0		662
2021	591		0
2020	0		0
Prior	1,938		1,978
Revolving Loans Amortized Cost Basis	515		2,549
Loans, net of unearned interest	3,044		5,189
Construction
Financing Receivable, Recorded Investment [Line Items]
2024	13,362		153,596
2023	164,703		181,787
2022	185,710		54,658
2021	56,475		23,804
2020	22,230		10,247
Prior	16,024		8,113
Revolving Loans Amortized Cost Basis	28,785		23,262
Loans, net of unearned interest	487,289		455,467
Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
2024	13,362		153,596
2023	164,703		181,214
2022	185,710		54,658
2021	56,475		22,357
2020	20,419		10,247
Prior	16,024		5,856
Revolving Loans Amortized Cost Basis	28,785		23,262
Loans, net of unearned interest	485,478		451,190
Construction | Special mention
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		0
2022	0		0
2021	0		1,447
2020	1,811		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned interest	1,811		1,447
Construction | Substandard or lower
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	0		573
2022	0		0
2021	0		0
2020	0		0
Prior	0		2,257
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned interest	0		2,830
Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
2024	25,512		158,634
2023	145,931		153,203
2022	148,963		111,703
2021	109,315		91,852
2020	88,940		27,863
Prior	203,897		182,896
Revolving Loans Amortized Cost Basis	84,754		87,723
Loans, net of unearned interest	807,312		813,874
Gross charge offs
2024	0		0
2023	0		0
2022	(21)		0
2021	0		0
2020	0		0
Prior	(7)		(13)
Revolving Loans Amortized Cost Basis	0		0
Total	(28)		(13)
Current period recoveries
2024			0
2023			0
2022			0
2021			0
2020			0
Prior			38
Revolving Loans Amortized Cost Basis			0
Total			38
Net charge offs
2024	0		0
2023	0		0
2022	(21)		0
2021	0		0
2020	0		0
Prior	(7)		25
Revolving Loans Amortized Cost Basis	0		0
Total	(28)		25
Residential mortgage | Performing Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	25,512		158,634
2023	145,753		153,203
2022	148,963		111,610
2021	109,236		90,382
2020	87,274		27,863
Prior	197,768		178,898
Revolving Loans Amortized Cost Basis	84,656		87,723
Loans, net of unearned interest	799,162		808,313
Residential mortgage | Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	0		0
2023	178		0
2022	0		93
2021	79		1,470
2020	1,666		0
Prior	6,129		3,998
Revolving Loans Amortized Cost Basis	98		0
Loans, net of unearned interest	8,150		5,561
Consumer
Financing Receivable, Recorded Investment [Line Items]
2024	1,550		2,361
2023	1,251		754
2022	622		649
2021	591		273
2020	221		223
Prior	281		103
Revolving Loans Amortized Cost Basis	2,619		2,803
Loans, net of unearned interest	7,135		7,166
Gross charge offs
2024	(16)		(86)
2023	0		0
2022	(2)		(10)
2021	0		(9)
2020	0		0
Prior	(4)		(30)
Revolving Loans Amortized Cost Basis	0		0
Total	(22)	(19)	(135)
Current period recoveries
2024	5		26
2023	0		0
2022	0		0
2021	0		1
2020	0		0
Prior	1		5
Revolving Loans Amortized Cost Basis	0		0
Total	6	$ 7	32
Net charge offs
2024	(11)		(60)
2023	0		0
2022	(2)		(10)
2021	0		(8)
2020	0		0
Prior	(3)		(25)
Revolving Loans Amortized Cost Basis	0		0
Total	(16)		(103)
Consumer | Performing Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	1,550		2,361
2023	1,251		754
2022	622		649
2021	591		273
2020	221		223
Prior	281		103
Revolving Loans Amortized Cost Basis	2,619		2,803
Loans, net of unearned interest	7,135		$ 7,166
Consumer | Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
2024	0
2023	0
2022	0
2021	0
2020	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Loans, net of unearned interest	$ 0

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Loans - ACL Loans by Portfolio Segment (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	May 19, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		$ 34,187	$ 18,957	$ 18,957
Charge offs		(50)	(150)
Recoveries		6	37
Net loans (charged off) recovered		(44)	(113)
Provision for credit losses		(619)	490
Allowance for loan losses, ending balance		33,524	31,265	34,187
Brunswick Bancorp Acquisition
Financing Receivable, Allowance for Credit Loss [Roll Forward]
PCD Loans	$ 336
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			11,931	11,931
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs				(16)
Commercial real estate | CRE Nonowner Occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		10,267	8,284	8,284
Charge offs		0	0
Recoveries		0	0
Net loans (charged off) recovered		0	0
Provision for credit losses		150	(368)
Allowance for loan losses, ending balance		10,417	8,175	10,267
Commercial real estate | CRE Nonowner Occupied | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			259	259
Commercial real estate | CRE Owner Occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		5,646	2,916	2,916
Charge offs		0	(16)
Recoveries		0	0
Net loans (charged off) recovered		0	(16)
Provision for credit losses		(44)	88
Allowance for loan losses, ending balance		5,602	3,079	5,646
Commercial real estate | CRE Owner Occupied | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			91	91
Commercial real estate | Multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		2,202	1,111	1,111
Charge offs		0	0
Recoveries		0	0
Net loans (charged off) recovered		0	0
Provision for credit losses		168	13
Allowance for loan losses, ending balance		2,370	1,159	2,202
Commercial real estate | Multifamily | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			35	35
Commercial real estate | Farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		2,064	831	831
Charge offs		0	0
Recoveries		0	0
Net loans (charged off) recovered		0	0
Provision for credit losses		(62)	42
Allowance for loan losses, ending balance		2,002	899	2,064
Commercial real estate | Farmland | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			26	26
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		7,131	4,593	4,593
Charge offs		0	(111)	(238)
Recoveries		0	0
Net loans (charged off) recovered		0	(111)
Provision for credit losses		(631)	186
Allowance for loan losses, ending balance		6,500	11,269	7,131
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			6,601	6,601
Construction | Residential Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		1,256	0	0
Charge offs		0	0
Recoveries		0	0
Net loans (charged off) recovered		0	0
Provision for credit losses		(80)	153
Allowance for loan losses, ending balance		1,176	1,423	1,256
Construction | Residential Construction | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			1,270	1,270
Construction | Other Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		2,146	0	0
Charge offs		0	0
Recoveries		0	0
Net loans (charged off) recovered		0	0
Provision for credit losses		25	277
Allowance for loan losses, ending balance		2,171	2,208	2,146
Construction | Other Construction | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			1,931	1,931
Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge offs		(28)		(13)
Recoveries				38
Residential mortgage | 1-4 Family 1st Lien
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		1,207	370	370
Charge offs		(7)	(4)
Recoveries		0	0
Net loans (charged off) recovered		(7)	(4)
Provision for credit losses		71	(317)
Allowance for loan losses, ending balance		1,271	1,356	1,207
Residential mortgage | 1-4 Family 1st Lien | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			1,307	1,307
Residential mortgage | 1-4 Family Rental
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		1,859	288	288
Charge offs		(21)	0
Recoveries		0	30
Net loans (charged off) recovered		(21)	30
Provision for credit losses		(299)	17
Allowance for loan losses, ending balance		1,539	1,066	1,859
Residential mortgage | 1-4 Family Rental | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			731	731
Residential mortgage | HELOC and Junior Liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		389	661	661
Charge offs		0	0
Recoveries		0	0
Net loans (charged off) recovered		0	0
Provision for credit losses		68	21
Allowance for loan losses, ending balance		457	452	389
Residential mortgage | HELOC and Junior Liens | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			(230)	(230)
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance		20	29	29
Charge offs		(22)	(19)	(135)
Recoveries		6	7	32
Net loans (charged off) recovered		(16)	(12)
Provision for credit losses		15	8
Allowance for loan losses, ending balance		$ 19	179	20
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			154	154
Unallocated Financing Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			(126)	(126)
Charge offs			0
Recoveries			0
Net loans (charged off) recovered			0
Provision for credit losses			370
Allowance for loan losses, ending balance			0
Unallocated Financing Receivables | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses, beginning balance			$ (244)	$ (244)

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Loans - ACL for Loans and Amortized Cost Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	$ 32,406	$ 33,100
Allowance for loan losses: ending balance, individually evaluated for impairment	1,118	1,087
Allowance for loan losses	33,524	34,187	$ 31,265	$ 18,957
Loans receivable: ending balance, collectively evaluated for impairment	4,307,059	4,238,306
Loans receivable: ending balance, individually evaluated for impairment	10,390	14,486
Loans, net of unearned interest	4,317,449	4,252,792
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, net of unearned interest	2,344,318	2,301,206
Commercial real estate | CRE Nonowner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	10,061	9,906
Allowance for loan losses: ending balance, individually evaluated for impairment	356	361
Allowance for loan losses	10,417	10,267	8,175	8,284
Loans receivable: ending balance, collectively evaluated for impairment	1,172,396	1,145,048
Loans receivable: ending balance, individually evaluated for impairment	2,378	4,505
Loans, net of unearned interest	1,174,774	1,149,553
Commercial real estate | CRE Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	5,602	5,646
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	5,602	5,646	3,079	2,916
Loans receivable: ending balance, collectively evaluated for impairment	620,534	627,995
Loans receivable: ending balance, individually evaluated for impairment	2,040	1,909
Loans, net of unearned interest	622,574	629,904
Commercial real estate | Multifamily
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	2,351	2,190
Allowance for loan losses: ending balance, individually evaluated for impairment	19	12
Allowance for loan losses	2,370	2,202	1,159	1,111
Loans receivable: ending balance, collectively evaluated for impairment	334,781	308,886
Loans receivable: ending balance, individually evaluated for impairment	171	173
Loans, net of unearned interest	334,952	309,059
Commercial real estate | Farmland
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	2,002	2,064
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	2,002	2,064	899	831
Loans receivable: ending balance, collectively evaluated for impairment	212,018	212,690
Loans receivable: ending balance, individually evaluated for impairment	0	0
Loans, net of unearned interest	212,018	212,690
Commercial and industrial | Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	5,761	6,419
Allowance for loan losses: ending balance, individually evaluated for impairment	739	712
Allowance for loan losses	6,500	7,131
Loans receivable: ending balance, collectively evaluated for impairment	669,037	673,793
Loans receivable: ending balance, individually evaluated for impairment	2,358	1,286
Loans, net of unearned interest	671,395	675,079
Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, net of unearned interest	487,289	455,467
Construction | Residential Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	1,176	1,256
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	1,176	1,256	1,423	0
Loans receivable: ending balance, collectively evaluated for impairment	103,861	92,270
Loans receivable: ending balance, individually evaluated for impairment	0	573
Loans, net of unearned interest	103,861	92,843
Construction | Other Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	2,171	2,146
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	2,171	2,146	2,208	0
Loans receivable: ending balance, collectively evaluated for impairment	383,428	360,368
Loans receivable: ending balance, individually evaluated for impairment	0	2,256
Loans, net of unearned interest	383,428	362,624
Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, net of unearned interest	807,312	813,874
Residential mortgage | 1-4 Family 1st Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	1,271	1,207
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	1,271	1,207	1,356	370
Loans receivable: ending balance, collectively evaluated for impairment	332,822	337,267
Loans receivable: ending balance, individually evaluated for impairment	1,735	1,875
Loans, net of unearned interest	334,557	339,142
Residential mortgage | 1-4 Family Rental
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	1,535	1,857
Allowance for loan losses: ending balance, individually evaluated for impairment	4	2
Allowance for loan losses	1,539	1,859	1,066	288
Loans receivable: ending balance, collectively evaluated for impairment	339,696	341,236
Loans receivable: ending balance, individually evaluated for impairment	356	701
Loans, net of unearned interest	340,052	341,937
Residential mortgage | HELOC and Junior Liens
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	457	389
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	457	389	452	661
Loans receivable: ending balance, collectively evaluated for impairment	131,351	131,587
Loans receivable: ending balance, individually evaluated for impairment	1,352	1,208
Loans, net of unearned interest	132,703	132,795
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	19	20	$ 179	$ 29
Loans, net of unearned interest	7,135	7,166
Consumer | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: ending balance, collectively evaluated for impairment	19	20
Allowance for loan losses: ending balance, individually evaluated for impairment	0	0
Allowance for loan losses	19	20
Loans receivable: ending balance, collectively evaluated for impairment	7,135	7,166
Loans receivable: ending balance, individually evaluated for impairment	0	0
Loans, net of unearned interest	$ 7,135	$ 7,166

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Loans - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	$ 92	$ 231
% of Total Class of Financing Receivable	0.01%		0.04%
Interest Only
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	$ 0	51
Term Extension
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	0	0
Combination: Interest Only and Term Extension
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	92	$ 180
Residential mortgage
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	$ 92
% of Total Class of Financing Receivable	0.01%
Residential mortgage | Interest Only
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	$ 0
Residential mortgage | Term Extension
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	0
Residential mortgage | Combination: Interest Only and Term Extension
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period	$ 92
Commercial real estate
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period			$ 231
% of Total Class of Financing Receivable			0.04%
Commercial real estate | Interest Only
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period			$ 51
Commercial real estate | Term Extension
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period			0
Commercial real estate | Combination: Interest Only and Term Extension
Financing Receivable, Modifications [Line Items]
Financing receivable, excluding accrued interest, modified period			$ 180

Deposits - By Type (Details)

Deposits - By Type (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Interest-Bearing Deposit Liabilities, Domestic, by Component [Abstract]
Noninterest-bearing demand deposits	$ 807,861	$ 801,312
Interest-bearing demand deposits	923,120	947,372
Money market	874,833	850,674
Savings	284,893	288,404
Total demand and savings	2,890,707	2,887,762
Time	1,488,398	1,458,450
Total Deposits	4,379,105	4,346,212
Overdrafts	$ 558	$ 315
% of Total Deposits
Noninterest-bearing demand deposits	18.40%	18.40%
Interest-bearing demand deposits	21.10%	21.80%
Money market	20%	19.60%
Savings	6.50%	6.60%
Total demand and savings	66%	66.40%
Time	34%	33.60%
Total deposits	100%	100%
Overdrafts	0.01%	0.01%

Deposits - Time Deposits By Mat

Deposits - Time Deposits By Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Deposit Liability [Line Items]
Time	$ 1,488,398	$ 1,458,450
Time Deposits Less Than250000
Deposit Liability [Line Items]
Maturing in 2024	827,090
Maturing in 2025	238,921
Maturing in 2026	38,245
Maturing in 2027	17,642
Maturing in 2028	11,241
Maturing thereafter	3,059
Time	1,136,198
Time Deposits250000 Or More
Deposit Liability [Line Items]
Maturing in 2024	279,833
Maturing in 2025	66,846
Maturing in 2026	3,463
Maturing in 2027	1,194
Maturing in 2028	572
Maturing thereafter	292
Time	$ 352,200

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Deposits [Abstract]
Brokered certificates of deposits	$ 244.8	$ 244.8
CDAR deposits	$ 91.1		$ 96.7

Derivative Financial Instrume_3

Derivative Financial Instruments - Loan Level Swaps (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Interest Rate Swap with Customers | Commercial Loan
Derivative [Line Items]
Notional amount	$ 201,405	$ 187,192
Weighted average remaining term (years)	5 years 11 months 1 day	6 years 2 months 26 days
Receive fixed rate (weighted average)	4.56%	4.59%
Pay variable rate (weighted average)	7.48%	7.50%
Estimated fair value	$ 11,315	$ 10,484
Interest Rate Swap with Counterparties | Commercial Loan
Derivative [Line Items]
Notional amount	$ 201,405	$ 187,192
Weighted average remaining term (years)	5 years 11 months 1 day	6 years 2 months 26 days
Receive fixed rate (weighted average)	4.56%	7.50%
Pay variable rate (weighted average)	7.48%	4.59%
Estimated fair value	$ 11,315	$ 10,484
Interest Rate Swaps Used In Cash Flow Hedges | Cash Flow Hedging
Derivative [Line Items]
Notional amount	$ 190,000	$ 190,000
Weighted average remaining term (years)	1 year 11 months 19 days	2 years 2 months 19 days
Receive fixed rate (weighted average)	3.74%	3.74%
Pay variable rate (weighted average)	4.07%	4.07%
Estimated fair value	$ 3,228	$ 1,460

Derivative Financial Instrume_4

Derivative Financial Instruments - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Interest Rate Contract
Derivative [Line Items]
Cash flow hedge to be reclassified within 12 months	$ 2.2

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 542,350	$ 512,099
OCI before reclassifications	(293)	1,854
Amounts reclassified from AOCI	(17)	(12)
Balance	550,968	510,793
Unrealized Loss on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(17,339)	(19,327)
OCI before reclassifications	(1,711)	1,977
Amounts reclassified from AOCI	0	0
Balance	(19,050)	(17,350)
Unrealized Holding Losses on Interest Rate Derivatives used in Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	820	0
OCI before reclassifications	1,410	(128)
Amounts reclassified from AOCI	0	0
Balance	2,230	(128)
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(118)	111
OCI before reclassifications	8	5
Amounts reclassified from AOCI	(17)	(12)
Balance	$ (127)	$ 104

Fair Value Measurement - Assets

Fair Value Measurement - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	$ 217,632	$ 223,555
Equity securities	431	438
Loans held for sale	$ 4,581	$ 3,855
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative assets	$ 14,543	$ 11,944
Total	237,187	239,792
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
Equity securities	431	438
Loans held for sale	0	0
Derivative assets	0	0
Total	431	438
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	217,632	223,555
Equity securities	0	0
Loans held for sale	4,581	3,855
Derivative assets	14,543	11,944
Total	236,756	239,354
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
Equity securities	0	0
Loans held for sale	0	0
Derivative assets	0	0
Total	0	0
U.S. Treasury and U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	35,490	35,649
U.S. Treasury and U.S. government agencies | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
U.S. Treasury and U.S. government agencies | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	35,490	35,649
U.S. Treasury and U.S. government agencies | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
Mortgage-backed U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	146,765	152,683
Mortgage-backed U.S. government agencies | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
Mortgage-backed U.S. government agencies | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	146,765	152,683
Mortgage-backed U.S. government agencies | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
State and political subdivision obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	3,633	3,646
State and political subdivision obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
State and political subdivision obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	3,633	3,646
State and political subdivision obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	31,744	31,577
Corporate debt securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	0	0
Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	31,744	31,577
Corporate debt securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS, at fair value	$ 0	$ 0

Fair Value Measurement - Fair V

Fair Value Measurement - Fair Value Measurements, Nonrecurring (Details) - Nonrecurring - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Individually evaluated loans, net of ACL
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, nonrecurring	$ 9,272	$ 13,399
Foreclosed assets held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, nonrecurring	$ 5,110	$ 293

Fair Value Measurement - Fair_2

Fair Value Measurement - Fair Value, by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial instruments - assets
AFS, at fair value	$ 217,632	$ 223,555
Estimated Fair Value	351,204	357,521
Loans held for sale	4,581	3,855
Derivative assets	14,543	11,944
Level 1
Financial instruments - assets
Cash and cash equivalents	68,085	96,763
AFS, at fair value	0	0
Estimated Fair Value	0	0
Equity securities	431	438
Loans held for sale	0	0
Net loans	0	0
Restricted investment in bank stocks	17,446	16,768
Accrued interest receivable	26,975	25,820
Derivative assets	0	0
Financial instruments - liabilities
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated debt	0	0
Accrued interest payable	16,330	14,257
Derivative liabilities	0	0
Level 2
Financial instruments - assets
Cash and cash equivalents	0	0
AFS, at fair value	217,632	223,555
Estimated Fair Value	351,204	357,521
Equity securities	0	0
Loans held for sale	4,581	3,855
Net loans	0	0
Restricted investment in bank stocks	0	0
Accrued interest receivable	0	0
Derivative assets	14,543	11,944
Financial instruments - liabilities
Deposits	4,368,088	4,337,723
Short-term borrowings	271,849	241,532
Long-term debt	20,768	55,081
Subordinated debt	40,332	39,515
Accrued interest payable	0	0
Derivative liabilities	11,315	10,484
Level 3
Financial instruments - assets
Cash and cash equivalents	0	0
AFS, at fair value	0	0
Estimated Fair Value	0	0
Equity securities	0	0
Loans held for sale	0	0
Net loans	4,285,266	4,221,926
Restricted investment in bank stocks	0	0
Accrued interest receivable	0	0
Derivative assets	0	0
Financial instruments - liabilities
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated debt	0	0
Accrued interest payable	0	0
Derivative liabilities	0	0
Carrying Amount
Financial instruments - assets
Cash and cash equivalents	68,085	96,763
AFS, at fair value	217,632	223,555
Estimated Fair Value	396,998	399,128
Equity securities	431	438
Loans held for sale	4,581	3,855
Net loans	4,283,925	4,218,605
Restricted investment in bank stocks	17,446	16,768
Accrued interest receivable	26,975	25,820
Derivative assets	14,543	11,944
Financial instruments - liabilities
Deposits	4,379,105	4,346,212
Short-term borrowings	271,849	241,532
Long-term debt	20,768	55,806
Subordinated debt	46,201	46,354
Accrued interest payable	16,330	14,257
Derivative liabilities	11,315	10,484
Estimated Fair Value
Financial instruments - assets
Cash and cash equivalents	68,085	96,763
AFS, at fair value	217,632	223,555
Estimated Fair Value	351,204	357,521
Equity securities	431	438
Loans held for sale	4,581	3,855
Net loans	4,285,266	4,221,926
Restricted investment in bank stocks	17,446	16,768
Accrued interest receivable	26,975	25,820
Derivative assets	14,543	11,944
Financial instruments - liabilities
Deposits	4,368,088	4,337,723
Short-term borrowings	271,849	241,532
Long-term debt	20,768	55,081
Subordinated debt	40,332	39,515
Accrued interest payable	16,330	14,257
Derivative liabilities	$ 11,315	$ 10,484

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Commitments, Contingencies and Guarantees [Line Items]
Off-balance-sheet credit exposure	$ 3,200	$ 3,600
Off-balance-sheet, liability, credit loss expense (reversal)	(318)
Cumulative Effect, Period of Adoption, Adjustment
Commitments, Contingencies and Guarantees [Line Items]
Off-balance-sheet credit exposure			$ 3,100
Financial Standby Letters of Credit
Commitments, Contingencies and Guarantees [Line Items]
Commitments to extend credit	$ 61,400	$ 62,200

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Short term borrowings	$ 271,849,000	$ 241,532,000
Maturity of federal funds purchased from correspondent banks	one business day
Maximum borrowing capacity	$ 3,000,000,000
Current borrowing available	1,700,000,000
Federal home loan bank, maximum amount available, net of deposits and advances	2,100,000,000
Letter of credit outstanding, amount	142,900,000	153,500,000
Other Correspondent Banks
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity	35,000,000
Outstanding drawings	$ 0	$ 0

Debt - Long-term Debt Outstandi

Debt - Long-term Debt Outstanding by Due Date (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total FHLB fixed rate instruments	$ 20,768	$ 55,806
Lease obligations included in long-term debt	3,173	3,197
Total long-term debt	23,941	59,003
Due in January 2024
Debt Instrument [Line Items]
Long-term debt outstanding	$ 0	$ 10,000
Federal Home Loan Bank, advances, branch of FHLB bank, interest rate	1.10%	1.10%
Due in March 2024
Debt Instrument [Line Items]
Long-term debt outstanding	$ 0	$ 25,000
Federal Home Loan Bank, advances, branch of FHLB bank, interest rate	5.60%	5.60%
Due in February 2026
Debt Instrument [Line Items]
Long-term debt outstanding	$ 20,000	$ 20,000
Federal Home Loan Bank, advances, branch of FHLB bank, interest rate	4.51%	4.51%
Due in August 2026
Debt Instrument [Line Items]
Long-term debt outstanding	$ 746	$ 782
Federal Home Loan Bank, advances, branch of FHLB bank, interest rate	4.80%	4.80%
Due in February 2027
Debt Instrument [Line Items]
Long-term debt outstanding	$ 22	$ 24
Federal Home Loan Bank, advances, branch of FHLB bank, interest rate	6.71%	6.71%

Subordinated Debt and Trust P_2

Subordinated Debt and Trust Preferred Securities (Details) - USD ($) $ in Thousands				3 Months Ended
	Nov. 30, 2021	Dec. 22, 2020	Mar. 20, 2020	Mar. 31, 2024	Dec. 31, 2023
Subordinated debt				$ 46,201	$ 46,354
Subordinated Debt | Subordinated Notes Due December 2030
Debt instrument, interest rate, effective percentage		4.50%
Subordinated debt issuance		$ 12,200
Principal amount sold, percent		100%
Interest rate period		5 years
Debt instrument, interest rate, effective percentage		4.50%
Redemption price, percentage		100%
Subordinated Debt | Subordinated Notes Due December 2030 | Related Party
Subordinated debt				750	750
Subordinated Debt | Subordinated Notes Due March 2030
Debt instrument, interest rate, effective percentage			4%
Subordinated debt issuance	$ 6,900		$ 15,000	8,100
Interest rate period			5 years
Debt instrument, interest rate, effective percentage			4.25%
Redemption price, percentage			100%
Interest payment terms, semi-annually			5 years
Subordinated Debt | Subordinated Notes Due March 2030 | Related Party
Subordinated debt				$ 1,700	$ 1,700
Riverview Acquisition | Subordinated Debt
Subordinate debt assumed	25,000
Subordinated debt fair value premium	$ 2,300
Debt instrument, interest rate, effective percentage	5.75%
Debt instrument, basis spread on variable rate	5.63%

Common Stock and Earnings Per_3

Common Stock and Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 19, 2020
Class of Stock [Line Items]
Number of antidilutive shares	0	0
Employee | Minimum
Class of Stock [Line Items]
Restricted shares, vesting period	1 year
Employee | Maximum
Class of Stock [Line Items]
Restricted shares, vesting period	4 years
Director
Class of Stock [Line Items]
Restricted shares, vesting period	12 months
Dividend Reinvestment Plan
Class of Stock [Line Items]
Shares authorized per plan (in shares)	300,000,000
2023 Stock Incentive Plan
Class of Stock [Line Items]
Aggregate shares granted (in shares)	350,000
Shares granted (in shares)	217,514
Granted shares unvested (in shares)	83,107
Allocated share-based compensation expense	$ 302	$ 249
Treasury Stock Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount (in shares)			$ 15,000
Stock repurchased during period (in shares)	15,500
Shares acquired, average cost per share (in dollars per share)	$ 20.81
Stock repurchased during period (in shares)	440,722
Stock repurchased at average price per share (in dollars per share)	$ 22.78
Stock repurchase program, remaining available repurchase amount	$ 5,000

Common Stock and Earnings Per_4

Common Stock and Earnings Per Share - Schedule of Computing Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract]
Net income	$ 12,133	$ 11,227
Weighted average common shares outstanding (basic) (in shares)	16,567,902	15,886,186
Effect of dilutive unvested restricted stock grants (in shares)	45,471	44,935
Weighted average common shares outstanding (diluted) (in shares)	16,613,373	15,931,121
Basic earnings per common share (In dollars per share)	$ 0.73	$ 0.71
Diluted earnings per common share (in dollars per share)	$ 0.73	$ 0.70