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Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)
In Thousands, except Share data, unless otherwise specified |
Mar. 31, 2015
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Dec. 31, 2014
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| Accounts receivable, net of allowance for doubtful accounts (in Dollars) | $ 2,135us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | $ 2,170us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |
| Preferred Stock of subsidiary, par value (in Dollars per share) | $ 1.00pesi_PreferredStockOfSubsidiaryParValueInDollarsPerShare | $ 1.00pesi_PreferredStockOfSubsidiaryParValueInDollarsPerShare |
| Preferred Stock of subsidiary, shares authorized | 1,467,396pesi_PreferredStockOfSubsidiaryAuthorizedInShares | 1,467,396pesi_PreferredStockOfSubsidiaryAuthorizedInShares |
| Preferred Stock of subsidiary, shares issued | 1,284,730pesi_PreferredStockOfSubsidiaryIssuedInShares | 1,284,730pesi_PreferredStockOfSubsidiaryIssuedInShares |
| Preferred Stock of subsidiary, shares outstanding | 1,284,730pesi_PreferredStockOfSubsidiaryOutstandingInShares | 1,284,730pesi_PreferredStockOfSubsidiaryOutstandingInShares |
| Preferred Stock of subsidiary, liquidation value per share | 1.00pesi_PreferredStockOfSubsidiaryLiquidationValuePerShareInDollarsPerShare | 1.00pesi_PreferredStockOfSubsidiaryLiquidationValuePerShareInDollarsPerShare |
| Preferred Stock of subsidiary, accrued and unpaid dividends (in Dollars) | $ 818pesi_PreferredStockOfSubsidiaryAccruedAndUnpaidDividends | $ 803pesi_PreferredStockOfSubsidiaryAccruedAndUnpaidDividends |
| Preferred stock par value (in Dollars per share) | $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare |
| Preferred stock, shares authorized | 2,000,000us-gaap_PreferredStockSharesAuthorized | 2,000,000us-gaap_PreferredStockSharesAuthorized |
| Preferred stock, shares issued | 0us-gaap_PreferredStockSharesIssued | 0us-gaap_PreferredStockSharesIssued |
| Preferred stock, shares outstanding | 0us-gaap_PreferredStockSharesOutstanding | 0us-gaap_PreferredStockSharesOutstanding |
| Common stock par value (in Dollars per share) | $ 0.001us-gaap_CommonStockParOrStatedValuePerShare | $ 0.001us-gaap_CommonStockParOrStatedValuePerShare |
| Common stock, shares authorized | 30,000,000us-gaap_CommonStockSharesAuthorized | 30,000,000us-gaap_CommonStockSharesAuthorized |
| Common stock, shares issued | 11,493,817us-gaap_CommonStockSharesIssued | 11,476,485us-gaap_CommonStockSharesIssued |
| Common stock, shares outstanding | 11,486,175us-gaap_CommonStockSharesOutstanding | 11,468,843us-gaap_CommonStockSharesOutstanding |
| Common Stock in treasury, at cost | 7,642us-gaap_TreasuryStockShares | 7,642us-gaap_TreasuryStockShares |
| X | ||||||||||
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- Definition
Value of all unpaid dividends of the subsidiary nonredeemable preferred stock. No definition available.
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| X | ||||||||||
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- Definition
The maximum number of subsidiary nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. No definition available.
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| X | ||||||||||
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- Definition
Total number of subsidiary nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders of our M and EC subsidiary. May be all or portion of the number of preferred shares authorized. These shares are non-voting and non-convertible. No definition available.
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| X | ||||||||||
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- Definition
Value of all subsidiary nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders. No definition available.
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| X | ||||||||||
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- Definition
Aggregate share number of subsidiary (M and EC) nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. These shares are non-voting and non-convertible. No definition available.
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| X | ||||||||||
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- Definition
Face amount or stated value per share of subsidiary nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) ; generally not indicative of the fair market value per share. No definition available.
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| X | ||||||||||
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- Definition
A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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