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7. COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012
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Sales commitments amount, fixed price contracts | $ 591
EthanolMember |
Sales commitments amount, fixed price contracts | 70
WetDistillersGrainMember |
Sales commitments amount, fixed price contracts | $ 521

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- Definition Sales Commitment Remaining Minimum Amount Committed Fixed Price Contracts. + References No definition available. + Details
Name: | peix_SalesCommitmentRemainingMinimumAmountCommittedFixedPriceContracts
Namespace Prefix: | peix_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant