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BANKRUPTCY FILING AND GOING CONCERN (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pre-petition accounts payable and other accrued liabilities	$ 2,717
Secured long-term debt and accrued interest	577,957
Unsecured senior notes	500,780
Unsecured revolving credit facility	1,488,579
Accrued interest and fees on unsecured revolving credit facility and senior notes	10,878
Derivative liabilities	3,566
Accrued liabilities relating to rejected executory contracts	30,539
Pension and other postretirement benefit plan liabilities	37,521
Liabilities Subject to Compromise	$ 2,652,537	$ 0

The amount of trade accounts payable included in liabilities subject to compromise.

The amount of debt and related accrued interest included in liabilities subject to compromise.

The amount of early contract termination fees included in liabilities subject to compromise.

The amount of other obligations included in liabilities subject to compromise.

The amount of pension and other postretirement obligations included in liabilities subject to compromise.