Annual report pursuant to Section 13 and 15(d)

Prepaid Expenses (Details)

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Prepaid Expenses (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Prepaid Expenses [Abstract]    
Prepayments on consumables and equipment    $ 3,638,165pme_PrepaymentsConsumablesEquipment
Prepaid Licenses    668,589pme_PrepaidLicenses
Other 32,913us-gaap_OtherPrepaidExpenseCurrent 2,820us-gaap_OtherPrepaidExpenseCurrent
Total prepaid expenses $ 32,913us-gaap_PrepaidExpenseCurrent $ 4,309,574us-gaap_PrepaidExpenseCurrent