Subordinated Debt and Trust Preferred Securities	12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]
Subordinated Debt and Trust Preferred Securities	(12) 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 $25,000,000 of Subordinated Notes (the “Riverview Notes”). In accordance with purchase accounting principles, the Riverview Notes were assigned a fair value premium of $2,302,000. 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 secured overnight financing rate (“SOFR”) plus 563 basis points, payable quarterly until maturity. Mid Penn may redeem the Notes at par, in whole or in part, at its option, anytime beginning on October 15, 2025. Trust Preferred Securities Assumed November 2021 with the Riverview Acquisition As a result of the merger with Riverview, Mid Penn assumed the subordinated debentures that Riverview had assumed in its acquisition of CBT Financial Corp. (“CBT”) on October 1, 2017 (the “CBT 2017 Notes”). In 2003 a trust formed by CBT which issued $5,155,000 of floating rate trust preferred securities as part of a pooled offering of such securities. The interest rate prior to Riverview entering into a fixed interest rate swap in 2020 adjusted quarterly to the three-month LIBOR rate plus 2.95%. CBT issued subordinated debentures to the trust in exchange for ownership of all of the common securities of the trust and the proceeds of the offering; the debentures represent the sole asset of the trust. CBT became eligible to redeem the subordinated debentures, in whole but not in part, beginning in 2008 at a price of 100% of face value. The subordinated debentures must be redeemed no later than 2033. Similarly, in 2005, a trust formed by CBT issued $4,124,000 of fixed rate trust preferred securities as part of a pooled offering of such securities (the “CBT 2015 Notes”). CBT issued subordinated debentures to the trust in exchange for ownership of all of the common securities of the trust and the proceeds of the offering; the debentures represent the sole asset of the trust. CBT became eligible to redeem the subordinated debentures, in whole but not in part, beginning in 2010 at a price of 100% of face value. Interest payments on the debentures may be deferred at any time at the election of Mid Penn for up to 20 consecutive quarterly periods. Interest on the debentures will accrue during the extension period, and all accrued principal and interest must be paid at the end of the extension period. During an extension period, Mid Penn may not declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a liquidation payment with respect to any of Mid Penn’s capital stock. In accordance with purchase accounting principles, the CBT 2017 Notes and CBT 2015 Notes assumed from Riverview were assigned a fair value premium of $6,000. The subordinated debentures are treated as Tier 1 capital for regulatory reporting purposes. 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 $12,150,000 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 (A) all or any portion of the December 2020 Notes cease to be deemed Tier 2 Capital, (B) interest on the December 2020 Notes fails to be deductible for United States federal income tax purposes or (C) 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 $750,000 of the December 2020 Notes as of December 31, 2021 and December 31, 2020. Subordinated Debt Issued March 2020 On March 20, 2020, Mid Penn entered into agreements with accredited investors who purchased $15,000,000 aggregate principal amount of Mid Penn Subordinated Notes due March 2030 (the “March 2020 Notes”). As a result of Mid Penn’s merger with Riverview on November 30, 2021, $6,870,000 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 December 31, 2021 was $8,130,000. The March 2020 Notes held at December 31, 2021 are 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 $1,700,000 of the March 2020 Notes as of December 31, 2021 and December 31, 2020. Subordinated Debt Issued December 2017 On December 19, 2017, Mid Penn entered into agreements with investors to purchase $10,000,000 aggregate principal amount of its Subordinated Notes due 2028 (the “2017 Notes”). The 2017 Notes are treated as Tier 2 capital for regulatory capital purposes. The offering closed in December 2017. The 2017 Notes bear interest at a rate of 5.25% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no times be less than 5.0%. Interest is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2018, for the first five years after issuance and will be payable quarterly in arrears thereafter on January 15, April 15, July 15, and October 15. The 2017 Notes will mature on January 1, 2028 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 21, 2022, and prior to January 1, 2028. Additionally, Mid Penn may redeem the 2017 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2017 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2017 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended. In the event of a redemption described in the previous sentence, Mid Penn will redeem the 2017 Notes at 100% of the principal amount of the 2017 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption. Holders of the 2017 Notes may not accelerate the maturity of the 2017 Notes, except upon the bankruptcy, insolvency, liquidation, receivership or similar event of Mid Penn or Mid Penn Bank, its principal banking subsidiary. As of December 31, 2021 and 2020, related parties held $1,450,000 of the 2017 Notes. Subordinated Debt Issued December 2015 On December 9, 2015, Mid Penn sold $7,500,000 aggregate principal amount of its Subordinated Notes due 2025 (the “2015 Notes”). Eighty-percent of the balance of the 2015 Notes are treated as Tier 2 capital for regulatory capital purposes as of December 31, 2021. The 2015 Notes bear interest at a rate of 5.15% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no times be less than 4.0%. Interest is payable quarterly in arrears on January 1, April 1, July 1 and October 1 of each year, and began on January 1, 2016. The 2015 Notes will mature on December 9, 2025 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 9, 2020, and prior to December 9, 2025. Additionally, Mid Penn may redeem the 2015 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2015 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2015 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended, in each case at 100% of the principal amount of the 2015 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption. Holders of the 2015 Notes may not accelerate the maturity of the 2015 Notes, except upon Mid Penn’s or Mid Penn Bank, its principal banking subsidiary’s, bankruptcy, insolvency, liquidation, receivership or similar event. As of December 31, 2021 and 2020, related parties held $1,930,000 of the 2015 Notes. Subordinated Debt Assumed July 2018 with the First Priority Acquisition On July 31, 2018, Mid Penn completed its acquisition of First Priority and assumed $9,500,000 of Subordinated Notes (the “First Priority Notes”). In accordance with purchase accounting principles, the First Priority Notes were assigned a fair value premium of $247,000. The notes were intended to be treated as Tier 2 capital for regulatory reporting purposes. The First Priority Notes agreements were entered into by First Priority on November 13, 2015 with five accredited investors pursuant to which First Priority issued subordinated notes totaling $9,500,000. The First Priority Notes had a maturity date of November 30, 2025, and paid interest at a fixed rate of 7.00% per annum. The Notes were non-callable for an initial period of five years and include provisions for redemption pricing between 101.5% and 100.5% of the liquidation value if called after five years but prior to the stated maturity date. On December 18, 2020, Mid Penn redeemed this $9,500,000 in subordinated debt assumed in 2018 in conjunction with Mid Penn’s acquisition of First Priority Bank. The First Priority subordinated debt was redeemed promptly following the expiration of the noncallable period and upon receipt of the required regulatory approval. Mid Penn recognized redemption pricing fees of $143,000 in 2020 related to the early redemption, which are included in other noninterest expenses. ASC Subtopic 835-30, Simplifying the Presentation of Debt Issuance Costs, requires that debt issuance costs be reported in the balance sheet as a direct deduction from the face amount of the liability. The unamortized debt issuance costs associated with the 2015 Notes and the 2017 Notes were collectively $44,000 at December 31, 2021 and $70,000 at December 31, 2020.

Subordinated Debt and Trust Preferred Securities

12 Months Ended

Dec. 31, 2021

Subordinated Debt and Trust Preferred Securities

(12) 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 $25,000,000 of Subordinated Notes (the “Riverview Notes”). In accordance with purchase accounting principles, the Riverview Notes were assigned a fair value premium of $2,302,000. 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 secured overnight financing rate (“SOFR”) plus 563 basis points, payable quarterly until maturity. Mid Penn may redeem the Notes at par, in whole or in part, at its option, anytime beginning on October 15, 2025.

Trust Preferred Securities Assumed November 2021 with the Riverview Acquisition

As a result of the merger with Riverview, Mid Penn assumed the subordinated debentures that Riverview had assumed in its acquisition of CBT Financial Corp. (“CBT”) on October 1, 2017 (the “CBT 2017 Notes”). In 2003 a trust formed by CBT which issued $5,155,000 of floating rate trust preferred securities as part of a pooled offering of such securities. The interest rate prior to Riverview entering into a fixed interest rate swap in 2020 adjusted quarterly to the three-month LIBOR rate plus 2.95%. CBT issued subordinated debentures to the trust in exchange for ownership of all of the common securities of the trust and the proceeds of the offering; the debentures represent the sole asset of the trust. CBT became eligible to redeem the subordinated debentures, in whole but not in part, beginning in 2008 at a price of 100% of face value. The subordinated debentures must be redeemed no later than 2033.

Similarly, in 2005, a trust formed by CBT issued $4,124,000 of fixed rate trust preferred securities as part of a pooled offering of such securities (the “CBT 2015 Notes”). CBT issued subordinated debentures to the trust in exchange for ownership of all of the common securities of the trust and the proceeds of the offering; the debentures represent the sole asset of the trust. CBT became eligible to redeem the subordinated debentures, in whole but not in part, beginning in 2010 at a price of 100% of face value. Interest payments on the debentures may be deferred at any time at the election of Mid Penn for up to 20 consecutive quarterly periods. Interest on the debentures will accrue during the extension period, and all accrued principal and interest must be paid at the end of the extension period. During an extension period, Mid Penn may not declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a liquidation payment with respect to any of Mid Penn’s capital stock.

In accordance with purchase accounting principles, the CBT 2017 Notes and CBT 2015 Notes assumed from Riverview were assigned a fair value premium of $6,000. The subordinated debentures are treated as Tier 1 capital for regulatory reporting purposes.

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 $12,150,000 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 (A) all or any portion of the December 2020 Notes cease to be deemed Tier 2 Capital, (B) interest on the December 2020 Notes fails to be deductible for United States federal income tax purposes or (C) 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 $750,000 of the December 2020 Notes as of December 31, 2021 and December 31, 2020.

Subordinated Debt Issued March 2020

On March 20, 2020, Mid Penn entered into agreements with accredited investors who purchased $15,000,000 aggregate principal amount of Mid Penn Subordinated Notes due March 2030 (the “March 2020 Notes”). As a result of Mid Penn’s merger with Riverview on November 30, 2021, $6,870,000 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 December 31, 2021 was $8,130,000. The March 2020 Notes held at December 31, 2021 are 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 $1,700,000 of the March 2020 Notes as of December 31, 2021 and December 31, 2020.

Subordinated Debt Issued December 2017

On December 19, 2017, Mid Penn entered into agreements with investors to purchase $10,000,000 aggregate principal amount of its Subordinated Notes due 2028 (the “2017 Notes”). The 2017 Notes are treated as Tier 2 capital for regulatory capital purposes. The offering closed in December 2017.

The 2017 Notes bear interest at a rate of 5.25% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no times be less than 5.0%. Interest is payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2018, for the first five years after issuance and will be payable quarterly in arrears thereafter on January 15, April 15, July 15, and October 15. The 2017 Notes will mature on January 1, 2028 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 21, 2022, and prior to January 1, 2028. Additionally, Mid Penn may redeem the 2017 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2017 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2017 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended. In the event of a redemption described in the previous sentence, Mid Penn will redeem the 2017 Notes at 100% of the principal amount of the 2017 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption.

Holders of the 2017 Notes may not accelerate the maturity of the 2017 Notes, except upon the bankruptcy, insolvency, liquidation, receivership or similar event of Mid Penn or Mid Penn Bank, its principal banking subsidiary. As of December 31, 2021 and 2020, related parties held $1,450,000 of the 2017 Notes.

Subordinated Debt Issued December 2015

On December 9, 2015, Mid Penn sold $7,500,000 aggregate principal amount of its Subordinated Notes due 2025 (the “2015 Notes”). Eighty-percent of the balance of the 2015 Notes are treated as Tier 2 capital for regulatory capital purposes as of December 31, 2021.

The 2015 Notes bear interest at a rate of 5.15% per year for the first five years and then float at the Wall Street Journal’s Prime Rate plus 0.50%, provided that the interest rate applicable to the outstanding principal balance will at no times be less than 4.0%. Interest is payable quarterly in arrears on January 1, April 1, July 1 and October 1 of each year, and began on January 1, 2016. The 2015 Notes will mature on December 9, 2025 and are redeemable in whole or in part, without premium or penalty, at any time on or after December 9, 2020, and prior to December 9, 2025. Additionally, Mid Penn may redeem the 2015 Notes in whole at any time, or in part from time to time, upon at least 30 days’ notice if: (i) a change or prospective change in law occurs that could prevent Mid Penn from deducting interest payable on the 2015 Notes for U.S. federal income tax purposes; (ii) an event occurs that precludes the 2015 Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) Mid Penn becomes required to register as an investment company under the Investment Company Act of 1940, as amended, in each case at 100% of the principal amount of the 2015 Notes, plus accrued and unpaid interest thereon to but excluding the date of redemption.

Holders of the 2015 Notes may not accelerate the maturity of the 2015 Notes, except upon Mid Penn’s or Mid Penn Bank, its principal banking subsidiary’s, bankruptcy, insolvency, liquidation, receivership or similar event. As of December 31, 2021 and 2020, related parties held $1,930,000 of the 2015 Notes.

Subordinated Debt Assumed July 2018 with the First Priority Acquisition

On July 31, 2018, Mid Penn completed its acquisition of First Priority and assumed $9,500,000 of Subordinated Notes (the “First Priority Notes”). In accordance with purchase accounting principles, the First Priority Notes were assigned a fair value premium of $247,000. The notes were intended to be treated as Tier 2 capital for regulatory reporting purposes.

The First Priority Notes agreements were entered into by First Priority on November 13, 2015 with five accredited investors pursuant to which First Priority issued subordinated notes totaling $9,500,000. The First Priority Notes had a maturity date of November 30, 2025, and paid interest at a fixed rate of 7.00% per annum. The Notes were non-callable for an initial period of five years and include provisions for redemption pricing between 101.5% and 100.5% of the liquidation value if called after five years but prior to the stated maturity date.

On December 18, 2020, Mid Penn redeemed this $9,500,000 in subordinated debt assumed in 2018 in conjunction with Mid Penn’s acquisition of First Priority Bank. The First Priority subordinated debt was redeemed promptly following the expiration of the noncallable period and upon receipt of the required regulatory approval. Mid Penn recognized redemption pricing fees of $143,000 in 2020 related to the early redemption, which are included in other noninterest expenses.

ASC Subtopic 835-30, Simplifying the Presentation of Debt Issuance Costs, requires that debt issuance costs be reported in the balance sheet as a direct deduction from the face amount of the liability. The unamortized debt issuance costs associated with the 2015 Notes and the 2017 Notes were collectively $44,000 at December 31, 2021 and $70,000 at December 31, 2020.