Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Details)

v2.4.1.9
Discontinued Operations (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Net income from discontinued operations $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 12,449us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 12,363us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 17,759us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 9,340us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax    $ 51,910,662us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax $ 84,494,428us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
China Dredging Group Co Ltd [Member]                      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Revenue                    161,497,136us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
209,619,489us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
Income from discontinued operations before income tax                    67,251,697us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
110,805,122us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
Income tax                    (15,341,035)us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
(26,310,694)us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
Net income from discontinued operations                    $ 51,910,662us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember
$ 84,494,428us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= pme_ChinaDredgingGroupCoLtdMember