Name:	pme_RelatedPartiesTransactionsTextualAbstract
Namespace Prefix:	pme_
Data Type:	xbrli:stringItemType
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Rental and related administrative service charge

No definition available.

Name:	pme_RentalAndRelatedAdministrativeServiceCharge
Namespace Prefix:	pme_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

No definition available.

Name:	us-gaap_LeaseExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

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

The amount of the monthly rental payments due under the lease entered into in connection with the transactions involving the sale of property to another party and the lease of the property back to the seller.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77913982&loc=d3e50796-112755

Name:	us-gaap_SaleLeasebackTransactionMonthlyRentalPayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pme_HaiYiShippingLimitedMember
Namespace Prefix:
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Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pme_PingLinMember
Namespace Prefix:
Data Type:	na
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Name:	pme_TypeOfCurrencyAxis=pme_RMBMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=pme_OfficeLeaseMember
Namespace Prefix:
Data Type:	na
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