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2. VARIABLE INTEREST ENTITY (Details) (New PE Holdco, USD $) In Thousands, unless otherwise specified | Sep. 30, 2013
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Variable Interest Entity [Line Items] |
Total assets | $ 162,440
Total liabilities | 119,509
Cash and Cash Equivalents [Member] |
Variable Interest Entity [Line Items] |
Total assets | 60
Other Current Assets [Member] |
Variable Interest Entity [Line Items] |
Total assets | 7,821
Property, Plant and Equipment [Member] |
Variable Interest Entity [Line Items] |
Total assets | 151,612
Other Assets [Member] |
Variable Interest Entity [Line Items] |
Total assets | 2,947
Other Current Liabilities [Member] |
Variable Interest Entity [Line Items] |
Total liabilities | 5,665
Long-term Debt [Member] |
Variable Interest Entity [Line Items] |
Total liabilities | 101,944
Other Liabilities [Member] |
Variable Interest Entity [Line Items] |
Total liabilities | $ 11,900

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- Definition The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685 + Details
Name: | us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685 + Details
Name: | us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration