Name:	pme_AnnualInterestRate
Namespace Prefix:	pme_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

Loan amount.

No definition available.

Name:	pme_LoanAmount
Namespace Prefix:	pme_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long-term bank loan.

No definition available.

Name:	pme_LongtermBankLoans
Namespace Prefix:	pme_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Repaid a long-term bank loan.

No definition available.

Name:	pme_RepaidALongtermBankLoan
Namespace Prefix:	pme_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	pme_SubsequentEventsDetailsLineItems
Namespace Prefix:	pme_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

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

Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Name:	us-gaap_ShortTermBankLoansAndNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Monetary effect of a change in the tax status effective after year-end but before the financial statements for the reporting period are issued or available to be issue by the entity.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32590-109319