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Note 7 - Preferred Stock Issuance and Conversion (Details) (Series B Preferred Stock [Member], USD $)
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12 Months Ended | |||||||||||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Dec. 31, 2008
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Dec. 31, 2007
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Dec. 31, 2006
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Dec. 31, 2005
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Dec. 31, 2004
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Dec. 31, 2003
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| Note 7 - Preferred Stock Issuance and Conversion (Details) [Line Items] | ||||||||||||
| Preferred Stock, Liquidation Preference Per Share (in Dollars per share) | $ 1.00us-gaap_PreferredStockLiquidationPreference | |||||||||||
| Preferred Stock Of Subsidiary Redeemable Price Per Share (in Dollars per share) | $ 1.00pesi_PreferredStockOfSubsidiaryRedeemablePricePerShare | |||||||||||
| Preferred Stock, Dividend Rate, Percentage | 5.00%us-gaap_PreferredStockDividendRatePercentage | |||||||||||
| Preferred Stock Of Subsidiary Per Share Amount On Which Dividend Rate Applied (in Dollars per share) | $ 1.00pesi_PreferredStockOfSubsidiaryPerShareAmountOnWhichDividendRateApplied | |||||||||||
| Dividends Payable | $ 803,000us-gaap_DividendsPayableCurrentAndNoncurrent | |||||||||||
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Other Noncurrent Liabilities [Member]
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| Note 7 - Preferred Stock Issuance and Conversion (Details) [Line Items] | ||||||||||||
| Preferred Stock Of Subsidiary Accrued Dividends |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
$ 64,000pesi_PreferredStockOfSubsidiaryAccruedDividends / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Refers to accrued dividends on preferred Stock of Subsidiary. No definition available.
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| X | ||||||||||
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- Definition
Refers to per share amount of preferred stock of subsidiary on which dividend rate applied. No definition available.
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| X | ||||||||||
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- Definition
Refers to redeemable price per share of preferred stock of subsidiary. No definition available.
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The percentage rate used to calculate dividend payments on preferred stock. No definition available.
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| X | ||||||||||
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- Definition
The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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