Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments - During the second quarter of 2020 Mid Penn’s Board of Directors approved Mid Penn Bank to enter into a commitment to purchase a limited partnership interest in a low-income housing project to construct thirty-nine apartments and common amenities in Cumberland County, Pennsylvania. All of the units are expected to qualify for Federal Low-Income Housing Tax Credits ("LIHTCs") as provided for in Section 42 of the Internal Revenue Code of 1986, as amended. Mid Penn’s limited partner capital contribution commitment is expected to be $10.8 million which will be paid in installments over the course of construction of the low-income housing facilities. The investment in the limited partnership will be reported in other assets on the balance sheet and amortized over a ten-year period. The project has been conditionally awarded $1.2 million in annual LIHTCs by the Pennsylvania Housing Finance Agency, with a total anticipated LIHTC amount of $12.0 million to be received by Mid Penn over the ten-year amortization period. Mid Penn’s commitment to purchase the limited partnership interest is conditional upon the review and approval of all closing documents, an opinion letter for tax counsel to the Partnership that the project qualifies for the LIHTCs and review and approval by Mid Penn of other documents it may deem necessary. As a result of the Riverview Acquisition on November 30, 2021, Mid Penn assumed a commitment to purchase a limited partnership interest in a low-income housing project to preserve and rehabilitate three buildings consisting of 17 apartments and two commercial shops in Tamaqua, Schuylkill County. All the units are expected to qualify for Federal Low-Income Housing Tax Credits ("LIHTCs") as provided for in Section 42 of the Internal Revenue Code of 1986, as amended. Mid Penn’s limited partner capital contribution commitment is expected to be $4.4 million which will be paid in installments over the course of construction of the low-income housing facilities. The investment in the limited partnership will be reported in other assets on the balance sheet and amortized over a ten-year period. Additionally, the agreement commits Mid Penn to a construction loan in the maximum principal amount of $3.5 million which will bear interest at 5.5% annum with a term of twenty-four months. The project has been conditionally awarded $484 thousand in annual LIHTCs by the Pennsylvania Housing Finance Agency, with a total anticipated LIHTC amount of $4.8 million to be received by Mid Penn over the ten-year amortization period. Mid Penn’s commitment to purchase the limited partnership interest is conditional upon the review and approval of all closing documents, an opinion letter for tax counsel to the Partnership that the project qualifies for the LIHTCs and review and approval by Mid Penn of other documents it may deem necessary. Contingencies - As of December 31, 2022 and 2021, Mid Penn received a total of $3.8 million and $38.9 million, respectively, of nonrefundable loan processing fees related to the loans disbursed as a result of Mid Penn’s participation in the SBA’s Paycheck Protection Program ("PPP"). These fees, and any offsetting loan origination costs, were deferred in accordance with FASB ASC 310-20, Receivables—Nonrefundable Fees and Other Costs, and have since been and will continue to be amortized to interest and fees on loans and leases on the Consolidated Statements of Income over the life of the respective loans. As of December 31, 2022, Mid Penn is not aware of any PPP loans outstanding, or for which fees have been received from the SBA, that have been cancelled, terminated, or repaid due to a borrower being determined to be ineligible for a PPP loan. 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.