Long-Term Liabilities (Tables)

9 Months Ended

Sep. 30, 2013

Long-Term Liabilities [Abstract]

Monetary Production Payment Liability

		September 30,		December 31,
		2013		2012
Monetary production payment	$	145,834	$	-
Less:  current portion		(19,167)		-
Long-term monetary production payment	$	126,667	$	-

Other Liabilities

		September 30,		December 31,
		2013		2012
Asset retirement obligations	$	130,110	$	139,821
Long-term derivative liabilities		6,244		7,402
Other		444		469
Total Other Liabilities	$	136,798	$	147,692

Schedule Of Asset Retirement Obligations

		Nine Months Ended
		September 30,
		2013		2012
Carrying amount of asset retirement obligations as of beginning of period	$	176,076	$	47,258
Accretion expense (included in DD&A expense)		17,298		5,614
Impact of foreign currency exchange rate changes		(207)		2,950
Payment of asset retirement obligations		(22,779)		(7,838)
Liabilities incurred and assumed		(4,333)		17,263
Carrying amount of asset retirement obligations, as of end of period		166,055		65,247
Less:  Current portion of asset retirement obligations		(35,945)		(8,051)
Long-term asset retirement obligations	$	130,110	$	57,196