XML 80 R70.htm IDEA: XBRL DOCUMENT v3.21.1

COVID-19 Pandemic Implications (Narrative) (Details) - USD ($)			3 Months Ended		12 Months Ended	15 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Mar. 31, 2021
Unusual Risk Or Uncertainty [Line Items]
Loans and leases receivable, gross, carrying amount	$ 2,646,236,000	$ 2,384,041,000	$ 2,646,236,000	$ 1,798,149,000	$ 2,384,041,000	$ 2,646,236,000
CARES Act [Member]
Unusual Risk Or Uncertainty [Line Items]
Loans and leases receivable, gross, carrying amount	$ 5,131,000	$ 11,681,000	$ 5,131,000		$ 11,681,000	$ 5,131,000
Maximum [Member] | CARES Act [Member]
Unusual Risk Or Uncertainty [Line Items]
Qualifying deferment status percentage of loan portfolio	1.00%	1.00%	1.00%		1.00%	1.00%
PPP Loans [Member] | Small Business Administration [Member]
Unusual Risk Or Uncertainty [Line Items]
Loan guarantee description			The PPP loans, which are 100 percent guaranteed by the SBA, have up to a five-year term to maturity and carry a low interest rate of 1 percent throughout the loan term.
Nonrefundable loan processing fees received	$ 15,882,000		$ 15,882,000		$ 20,883,000	$ 36,765,000
Loan processing fees			5,047,000	0
Deferred loan processing fees not yet realized	$ 18,581,000	$ 7,746,000	$ 14,988,000		$ 3,593,000
Amortization of loan processing fees description			will be amortized to interest and fees on loans and leases on the Consolidated Statements of Income over the life of each respective loan.
PPP Loans [Member] | Small Business Administration [Member] | Interest and Fees on Loans and Leases [Member]
Unusual Risk Or Uncertainty [Line Items]
Loan processing fees			$ 5,047,000	$ 0
PPP Loans [Member] | Small Business Administration [Member] | Minimum [Member]
Unusual Risk Or Uncertainty [Line Items]
Percentage of processing fee per loan			1.00%
PPP Loans [Member] | Small Business Administration [Member] | Maximum [Member]
Unusual Risk Or Uncertainty [Line Items]
Percentage of processing fee per loan			5.00%

X

- Definition

Amortization of loan processing fees description.

+ References

No definition available.

+ Details

Name:	mpb_AmortizationOfLoanProcessingFeesDescription
Namespace Prefix:	mpb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Deferred loan processing fees not yet realized.

+ References

No definition available.

+ Details

Name:	mpb_DeferredLoanProcessingFeesNotYetRealized
Namespace Prefix:	mpb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Loan guarantee description.

+ References

No definition available.

+ Details

Name:	mpb_LoanGuaranteeDescription
Namespace Prefix:	mpb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Proceeds from nonrefundable loan processing fees.

+ References

No definition available.

+ Details

Name:	mpb_ProceedsFromNonrefundableLoanProcessingFees
Namespace Prefix:	mpb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Processing fee per loan percentage.

+ References

No definition available.

+ Details

Name:	mpb_ProcessingFeePerLoanPercentage
Namespace Prefix:	mpb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Qualifying deferment status percentage of loan portfolio.

+ References

No definition available.

+ Details

Name:	mpb_QualifyingDefermentStatusPercentageOfLoanPortfolio
Namespace Prefix:	mpb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Expenses paid for obtaining loans which includes expenses such as application and origination fees.

+ References

No definition available.

+ Details

Name:	us-gaap_LoanProcessingFee
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_UnusualRiskOrUncertaintyLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_UnusualRiskOrUncertaintyByNatureAxis=mpb_CARESActMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=mpb_PaycheckProtectionProgramLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=mpb_SmallBusinessAdministrationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=mpb_InterestAndFeesOnLoansAndLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: