Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Derivative Instruments [Abstract]

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

		September 30,		December 31,
		2013		2012
Derivatives not designated as hedges:
Other liabilities - long-term	$	(6,244)	$	(7,402)

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

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
Derivatives not designated as hedges:
Unrealized losses on oil and gas commodity derivatives	$	-	$	(1,515)	$	-	$	(3,420)
Unrealized gains on embedded derivatives
related to debt and equity instruments	$	855	$	311	$	1,158	$	1,242