Goodwill and Other Intangibles (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended					3 Months Ended	12 Months Ended		12 Months Ended		12 Months Ended
	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Ross Smith Energy Group Ltd. ("RSEG")	Jun. 03, 2011 Ross Smith Energy Group Ltd. ("RSEG")	Jun. 30, 2011 U.S. Operations	Dec. 31, 2012 U.S. Operations	Jun. 30, 2012 U.S. Operations	Dec. 31, 2012 European Operations	Jun. 30, 2012 European Operations	Dec. 31, 2012 Asia Pacific Operations	Jun. 30, 2012 Asia Pacific Operations
Goodwill
Balance at the beginning of the period		$ 0	$ 274,292		$ 0	$ 30,715		$ 245,105	$ 0	$ 28,486	$ 0	$ 701	$ 0
Impairment losses	(274,285)	(101)	(274,285)	(229,317)			225,000	(245,103)		(28,481)		(701)
Currency translation adjustment			(7)					(2)		(5)
Balance at the end of the period			$ 0	$ 274,292	$ 0	$ 30,715			$ 0		$ 0		$ 0