Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details 1)

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Shareholders' Equity (Details 1) (USD $)
12 Months Ended
Dec. 31, 2014
Shareholders' Equity [Abstract]  
Warrants outstanding range of exercise price $ 12.00pme_WarrantsOutstandingRangeOfExercisePrice
Warrants outstanding number outstanding at December 31, 2014 8,966,667us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Warrants outstanding weighted average remaining contractual life 3 years 2 months 12 days
Warrants exercisable weighted average exercise price $ 12.00pme_WeightedAverageExercisePriceOfWarrantsExercisable
Warrants exercisable number exercisable at December 31, 2014 8,966,667us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Warrants exercisable weighted average exercise price $ 12.00pme_WarrantsExercisableWeightedAverageExercisePrice