Quarterly report pursuant to sections 13 or 15(d)

2. VARIABLE INTEREST ENTITY (Details)

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2. VARIABLE INTEREST ENTITY (Details) (New PE Holdco, USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
New PE Holdco
  
Variable Interest Entity [Line Items]  
Cash and cash equivalents $ 37
Other current assets 9,553
Property and equipment 146,440
Other assets 3,050
Total assets 159,080
Current liabilities 7,597
Long-term debt, including current portion 101,760
Other liabilities 5,496
Total liabilities $ 114,853