Quarterly report pursuant to sections 13 or 15(d)

2. VARIABLE INTEREST ENTITY (Details)

v2.4.0.6
2. VARIABLE INTEREST ENTITY (Details) (VIEBalanceSheetMember, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
VIEBalanceSheetMember
 
Values and classification of assets that are collateral for the obligations of New PE Holdco  
Cash and cash equivalents $ 11
Other current assets 7,485
Property and equipment 143,308
Other assets 3,150
Total assets 153,954
Current liabilities 6,598
Long-term debt, including current portion 103,597
Other liabilities 220
Total liabilities $ 110,415