Annual report pursuant to Section 13 and 15(d)

Note 9 - Long-term Debt (Details) - Maturities of Long-term Debt Maturing in Future Years

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Note 9 - Long-term Debt (Details) - Maturities of Long-term Debt Maturing in Future Years (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Maturities of Long-term Debt Maturing in Future Years [Abstract]  
2015 $ 3,819us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2016 7,690us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Total $ 11,509pesi_LongTermDebtExcludingDebtDiscount