WARRANTY COSTS AND OTHER CONTINGENCIES (Details Textuals 1) (USD $)	9 Months Ended	3 Months Ended
Sep. 30, 2014	Dec. 31, 2014 Subsequent event
Warrant Cost And Other Contingencies [Line Items]
Obligations for inventory repurchases		$ 1,100,000
Cost reduction to net sales	$ 60,000

Represents company recorded costs in connection as a reduction to net sales.

No definition available.

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