XML 108 R93.htm IDEA: XBRL DOCUMENT
v3.22.4

Subordinated Debt and Trust Preferred Securities - Narrative (Details) - USD ($) |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2021 | Dec. 22, 2020 | Oct. 06, 2020 | Mar. 20, 2020 | Dec. 19, 2017 | Oct. 01, 2017 | Dec. 09, 2015 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Repayments of subordinated debt |  |  |  |  |  |  |  | $ 16,778,000 | $ 6,870,000 | $ 9,640,000
Subordinated Debt | Subordinated Notes Due December 2030 |  |  |  |  |  |  |  |  |  |
Subordinated debt and trust preferred securities (redemption) issuance |  | $ 12,200,000 |  |  |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  | 4.50% |  |  |  |  |  |  |  |
Interest rate period |  | 5 years |  |  |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  | 4.50% |  |  |  |  |  |  |  |
Debt instrument redemption price percentage |  | 100.00% |  |  |  |  |  |  |  |
Notes payable to related parties |  |  |  |  |  |  |  | 750,000 | 750,000 |
Subordinated Debt | Subordinated Notes Due March 2030 |  |  |  |  |  |  |  |  |  |
Subordinated debt and trust preferred securities (redemption) issuance | $ 6,900,000 |  |  | $ 15,000,000 |  |  |  |  | 8,100,000 |
Debt instrument, interest rate, effective percentage |  |  |  | 4.00% |  |  |  |  |  |
Interest rate period |  |  |  | 5 years |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  |  |  | 4.25% |  |  |  |  |  |
Interest payment terms, semi-annually |  |  |  | 5 years |  |  |  |  |  |
Debt instrument redemption price percentage |  |  |  | 100.00% |  |  |  |  |  |
Notes payable to related parties |  |  |  |  |  |  |  | 1,700,000 | 1,700,000 |
Subordinated Debt | Subordinated Notes Due 2028 |  |  |  |  |  |  |  |  |  |
Subordinated debt and trust preferred securities (redemption) issuance |  |  |  |  | $ 10,000,000 |  |  |  |  |
Debt instrument, interest rate, effective percentage |  |  |  |  | 5.25% |  |  |  |  |
Interest rate period |  |  |  |  | 5 years |  |  |  |  |
Notes payable to related parties |  |  |  |  |  |  |  | $ 1,500,000 | $ 1,500,000 |
Subordinated Debt | Subordinated Notes Due 2028 | WSJ Prime Rate |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  | 0.50% |  |  |  |  |
Interest payment terms, semi-annually |  |  |  |  | 5 years |  |  |  |  |
Debt instrument redemption price percentage |  |  |  |  | 100.00% |  |  |  |  |
Subordinated Debt | Subordinated Notes Due 2028 | WSJ Prime Rate | Maximum |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  |  |  |  | 5.00% |  |  |  |  |
Subordinated Debt | Subordinated Notes Due 2025 |  |  |  |  |  |  |  |  |  |
Subordinated debt and trust preferred securities (redemption) issuance |  |  |  |  |  |  | $ 7,500,000 |  |  |
Percent treated as tier 2 capital |  |  |  |  |  |  | 60.00% |  |  |
Debt instrument, interest rate, effective percentage |  |  |  |  |  |  | 5.15% |  |  |
Interest rate period |  |  |  |  |  |  | 5 years |  |  |
Subordinated Debt | Subordinated Notes Due 2025 | WSJ Prime Rate |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  |  |  |  | 0.50% |  |  |
Subordinated Debt | Subordinated Notes Due 2025 | WSJ Prime Rate | Maximum |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  |  |  |  |  |  | 4.00% |  |  |
Riverview Acquisition | Subordinated Debt |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, effective percentage | 5.75% |  |  |  |  |  |  |  |  |
Sabordinate debt assumed | $ 25,000,000 |  |  |  |  |  |  |  |  |
Subordinated debt fair value premium | $ 2,300,000 |  |  |  |  |  |  |  |  |
Riverview Acquisition | Subordinated Debt | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 5.63% |  |  |  |  |  |  |
CBT 2017 Notes | Subordinated Debt |  |  |  |  |  |  |  |  |  |
Preferred securities issued, amount |  |  |  |  |  | $ 5,200,000 |  |  |  |
Debt instrument face value percentage |  |  |  |  |  | 100.00% |  |  |  |
CBT 2015 Notes | Subordinated Debt |  |  |  |  |  |  |  |  |  |
Preferred securities issued, amount |  |  |  |  |  | $ 4,100,000 |  |  |  |
Debt instrument face value percentage |  |  |  |  |  | 100.00% |  |  |  |

X
- Definition Business combination long term debt fair value premium. + References No definition available. + Details
Name: | mpb_BusinessCombinationLongTermDebtFairValuePremium
Namespace Prefix: | mpb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt instrument face value percentage. + References No definition available. + Details
Name: | mpb_DebtInstrumentFaceValuePercentage
Namespace Prefix: | mpb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Interest Payment Terms, Semi-Annually + References No definition available. + Details
Name: | mpb_DebtInstrumentInterestPaymentTermsSemiAnnually
Namespace Prefix: | mpb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Interest Rate Period + References No definition available. + Details
Name: | mpb_DebtInstrumentInterestRatePeriod
Namespace Prefix: | mpb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Subordinated Long-Term Debt, Percent Treated as Tier 2 Capital + References No definition available. + Details
Name: | mpb_SubordinatedLongTermDebtPercentTreatedAsTier2Capital
Namespace Prefix: | mpb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 + Details
Name: | us-gaap_DebtConversionConvertedInstrumentAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 + Details
Name: | us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount for notes payable (written promise to pay), due to related parties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
Name: | us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfSubordinatedLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfSubordinatedDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SubordinatedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mpb_SubordinatedNotesDueDecemberTwoThousandAndThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mpb_SubordinatedNotesDueMarchTwoThousandAndThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mpb_SubordinatedNotesDueTwoThousandAndTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mpb_SubordinatedNotesDueTwoThousandAndTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mpb_RiverviewAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=mpb_SecuredOvernightFinancingRateSOFRMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mpb_CBTTwoThousandSeventeenNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mpb_CBTTwoThousandFifteenNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |