Fair Value Measurement (Fair Value, by Balance Sheet Grouping) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets: Cash and cash equivalents	$ 14,195	$ 9,882
Financial Assets: Interest-bearing time balances with other financial institutions	5,669us-gaap_OtherAssetsFairValueDisclosure	5,772us-gaap_OtherAssetsFairValueDisclosure
Available-for-sale Securities	142,680us-gaap_AvailableForSaleSecurities	141,634us-gaap_AvailableForSaleSecurities
Financial Assets: Net loans and leases	696,138	572,487
Financial Assets: Restricted investment in bank stocks	3,517	3,181
Financial Assets: Accrued interest receivable	3,394	3,058
Financial Assets: Mortgage servicing rights	182us-gaap_ServicingAssetAtFairValueAmount	187us-gaap_ServicingAssetAtFairValueAmount
Financial Liabilities: Deposits	760,676us-gaap_DepositsFairValueDisclosure	639,226us-gaap_DepositsFairValueDisclosure
Financial Liabilities: Short-term borrowings	621us-gaap_ShorttermDebtFairValue	578us-gaap_ShorttermDebtFairValue
Financial Liabilities: Long-term debt	56,093us-gaap_LongTermDebtFairValue	52,514us-gaap_LongTermDebtFairValue
Financial Liabilities: Accrued interest payable	498	349
Financial Assets: Cash and cash equivalents, Carrying Value	14,195	9,882
Financial Assets: Interest bearing time balances with other financial institutions, Carrying Value	5,669us-gaap_InterestBearingDepositsInBanks	5,772us-gaap_InterestBearingDepositsInBanks
Financial Assets: Net loans and leases, Carrying Value	688,587	564,817
Financial Assets: Restricted investment in bank stocks, Carrying Value	3,517us-gaap_FederalHomeLoanBankStock	3,181us-gaap_FederalHomeLoanBankStock
Financial Assets: Acrued interest receivable, Carrying Value	3,394us-gaap_InterestReceivable	3,058us-gaap_InterestReceivable
Financial Assets: Mortgage Servicing Rights, Carrying Value	182mpb_MortgageServicingRights	187mpb_MortgageServicingRights
Financial Liabilities: Deposits, Carrying Value	759,046us-gaap_Deposits	637,922us-gaap_Deposits
Financial Liabilities: Short-term borrowings, Carrying Value	621us-gaap_ShortTermBorrowings	578us-gaap_ShortTermBorrowings
Financial Liabilities: Long-term debt, Carrying Value	56,480	52,961
Financial Liabilities: Accrued interest payable, Carrying Value	498	349
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1,218	561
Financial Assets: Net loans and leases
Financial Liabilities: Deposits
Financial Liabilities: Long-term debt
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	141,462	141,073
Financial Assets: Net loans and leases
Financial Liabilities: Deposits	760,676	639,226
Financial Liabilities: Long-term debt	56,093	52,514
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets: Net loans and leases	696,138	572,487
Financial Liabilities: Deposits
Financial Liabilities: Long-term debt
Commitments to Extend Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Off-balance sheet financial instruments	0	0
Off-balance sheet financial instruments, Carrying Value	0	0
Standby Letters of Credit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Off-balance sheet financial instruments	0	0
Off-balance sheet financial instruments, Carrying Value	$ 0	$ 0

Accrued Interest Receivable, Fair Value Disclosure

No definition available.

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- Definition

Capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio.

+ References

No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

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-Paragraph 1

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

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-Glossary Cash Equivalents

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- Definition

The sum of cash and cash equivalents plus Federal Funds Sold. Cash and cash equivalents consist of short term, highly liquid investments that are readily convertible to known amounts of cash and are so near their maturity that they present negligible risk of changes in value due to changes in interest rates -- usually with an original maturity less than 90 days.

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-Glossary Cash Equivalents

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-Paragraph 1

-Subparagraph (SX 210.9-03.1,2,3)

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

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- Definition

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

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The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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- Definition

Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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-Paragraph 2

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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- Definition

For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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-Paragraph 1

-Subparagraph (SX 210.9-03.2)

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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-Number 210

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-Paragraph 15

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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-Number 210

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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-Glossary Loan

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of other assets.

+ References

No definition available.

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- Definition

Fair value portion of other liabilities.

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No definition available.

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- Definition

The aggregate value of all restricted investments.

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-Number 210

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-Paragraph 6

-Subparagraph c

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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-Paragraph 3

-Subparagraph (a)(1)

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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-Number 210

-Section 03

-Paragraph 13

-Subparagraph 2, 3

-Article 9

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

No definition available.

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