This element represents the amount of aggregate service charges.

No definition available.

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Namespace Prefix:	mpx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents joint venture ownership interest percentage.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Represents rent and allocable expenses incurred during the period.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

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Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Balance Type:	na
Period Type:	instant

- Definition

Amount due from parties in nontrade transactions, classified as other.

+ References

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Data Type:	xbrli:monetaryItemType
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- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- 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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50 percent or less owned persons accounted for by the equity method (equity method investees).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Balance Type:	credit
Period Type:	instant

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Period Type:

- Details

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- Details

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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2016	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
RPC
RELATED PARTY TRANSACTIONS
Other receivables			$ 524
RPC \| 255 RC, LLC
RELATED PARTY TRANSACTIONS
Joint venture ownership interest percentage	50.00%
Investment in joint venture	$ 2,600
Operating lease agreement term	5 years
Rent and allocable fixed cost for corporate aircraft		$ 188	160	$ 160
Payable due to related party		2,000	1,800
Undistributed earnings represented in retained earnings		675
RPC \| Transition Support Services Agreement
RELATED PARTY TRANSACTIONS
Aggregate service charges paid		1,100	1,000	$ 900
Other receivables		$ 99	$ 120
Director
RELATED PARTY TRANSACTIONS
Voting power (in percent)		50.00%