Name:	end_LiabilitiesNotSubjectToCompromiseAbstract
Namespace Prefix:	end_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

Debtors Condensed Combined Financial Statements (Debtors Condensed Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets [Abstract]
Current Assets	$ 164,754us-gaap_AssetsCurrent	$ 160,231us-gaap_AssetsCurrent
Property and Equipment, Net ($10,724 not subject to amortization)	469,509us-gaap_PropertyPlantAndEquipmentNet	1,072,151us-gaap_PropertyPlantAndEquipmentNet
Other Assets	72us-gaap_OtherAssetsNoncurrent	33,222us-gaap_OtherAssetsNoncurrent
Total Assets	734,576us-gaap_Assets	1,524,842us-gaap_Assets
Liabilities Not Subject To Compromise [Abstract]
Accrued expenses and other	15,196us-gaap_AccruedLiabilitiesCurrent	39,730us-gaap_AccruedLiabilitiesCurrent
Other	66,077us-gaap_OtherLiabilitiesNoncurrent	131,370us-gaap_OtherLiabilitiesNoncurrent
Liabilities Subject to Compromise	841,044us-gaap_LiabilitiesSubjectToCompromise
Series C Convertible Preferred Stock - Liquidation Preference: $14,800	17,481	43,703
Stockholders' Equity:	(776,141)	18,388	99,431	154,079
Total Liabilities and Stockholders' Equity	734,576	1,524,842
Property and equipment not subject to amortization	10,784	368,660
Debtors [Member]
Assets [Abstract]
Current Assets	41,844
Property and Equipment, Net ($10,724 not subject to amortization)	35,530
Long-Term Receivables Due from Affiliates	633,801
Investments in Subsidiaries	295,816
Other Assets	10
Total Assets	1,007,001
Liabilities Not Subject To Compromise [Abstract]
Accrued expenses and other	8,403
Current Liabilities Due to Affiliates	105,060
Other	438
Liabilities Subject to Compromise	841,044
Series C Convertible Preferred Stock - Liquidation Preference: $14,800	17,481
Stockholders' Equity:	34,575
Total Liabilities and Stockholders' Equity	1,007,001
Property and equipment not subject to amortization	10,724
Preferred stock liquidation preference	$ 14,800