XML 64 R54.htm IDEA: XBRL DOCUMENT v3.20.2

SUBSEQUENT EVENT (Details)	Jul. 28, 2020 $ / shares
SUBSEQUENT EVENTS
Special cash dividend Payable, Amount Per Share	$ 0.08
Dividend payable, date to be payable	Sep. 10, 2020
Dividends payable, date of record	Aug. 10, 2020

X

- Definition

The per share amount of a dividend payable as of the financial reporting date.

+ References

No definition available.

+ Details

Name:	mpx_AdditionToSpecialDividendPayable
Namespace Prefix:	mpx_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ 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 http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

+ Details

Name:	us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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