Supplemental Financial Information (Parent - Balance Sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Current Assets [Abstract]
Cash and cash equivalents	$ 343,520	$ 4,143	$ 25,587	$ 8,919
Other current assets	5,006	4,064
Total current assets	452,004	91,214
Other noncurrent assets	1,653	835
Total assets	1,420,231	952,039
Current Liabilities [Abstract]
Current portion of long term debt	0	3,370,553
Interest payable	0	42,657
Accrued and other current liabilities	46,067	72,428
Total current liabilities	143,419	3,651,897
Liabilities not subject to compromise parent	426,608	3,943,976
Total shareholders' deficit	(2,895,921)	(2,991,937)
Total liabilities and shareholders' equity	1,420,231	952,039
Parent [Member]
Current Assets [Abstract]
Cash and cash equivalents	254	523	$ 26,572	$ 772
Accounts receivable	29,939	64,542
Other current assets	5,422	5,150
Total current assets	35,615	70,215
Other noncurrent assets	0	24,197
Total assets	35,615	94,412
Current Liabilities [Abstract]
Current portion of long term debt	0	1,283,232
Interest payable	0	14,166
Accrued and other current liabilities	536	0
Total current liabilities	536	1,297,398
Advances from unconsolidated affiliates	1,591,269	1,788,951
Liabilities not subject to compromise parent	1,591,805	3,086,349
Liabilities subject to compromise parent	1,339,732	0
Total shareholders' deficit	(2,895,922)	(2,991,937)
Total liabilities and shareholders' equity	$ 35,615	$ 94,412