Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments [Abstract]

Schedule Of Fair Market Value Of Derivative Instruments Included On The Balance Sheet

		June 30,		December 31,
		2013		2012
Derivatives not designated as hedges:
Other liabilities - long-term	$	(7,099)	$	(7,402)

Schedule Of Effect Of Derivatives Not Designated As Hedges On Results Of Operations

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2013		2012		2013		2012
Derivatives not designated as hedges:
Unrealized losses on oil and gas commodity derivatives	$	-	$	(887)	$	-	$	(1,904)
Unrealized gains (losses) on embedded derivatives
related to debt and equity instruments	$	(1,277)	$	(2,918)	$	303	$	931