XML 78 R62.htm IDEA: XBRL DOCUMENT
v3.25.4

INCOME TAXES - Reconciliation of beginning and ending amount of unrecognized tax benefits (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Unrecognized Tax Benefits [Roll Forward] |  |
Balance at beginning of the year | $ 1,411 | $ 1,349
Additions (reductions) based on tax positions related to the current year | (121) | 21
Additions for tax positions of prior years | 41 | 41
Balance at end of the year | $ 1,331 | $ 1,411

X
- Definition Amount of increase (decrease) in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References No definition available. + Details
Name: | mpx_UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromCurrentPeriodTaxPositions
Namespace Prefix: | mpx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References No definition available. + Details
Name: | mpx_UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromPriorPeriodTaxPositions
Namespace Prefix: | mpx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 217 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-217 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org/1943274/2147482525/740-10-45-10B + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant