Document and Entity Information In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Nov. 06, 2013
Document And Entity Information [Abstract]
Document type	10-Q
Document period end date	Sep. 30, 2013
Amendment flag	false
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2013
Current fiscal year end date	--12-31
Entity central index key	0001112412
Entity filer category	Accelerated Filer
Entity registrant name	Endeavour International Corporation
Entity Common Stock, Shares Outstanding		47.2