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Property And Equipment, Net (Tables)
9 Months Ended
Sep. 30, 2013
Property, Plant and Equipment [Abstract]  
Schedule Of Property And Equipment
At September 30, 2013 and December 31, 2012, property and equipment, net consisted of the following:
 
 
September 30,
2013
 
December 31,
2012
 
 
(In thousands)
Proved oil and gas properties
 
$
2,207,220

 
$
1,713,827

Accumulated depreciation, depletion and amortization
 
(711,239
)
 
(561,279
)
Proved oil and gas properties, net
 
1,495,981

 
1,152,548

Unproved properties, not being amortized
 
 
 
 
Unevaluated leasehold and seismic costs
 
302,391

 
238,833

Exploratory wells in progress
 
41,926

 
43,803

Capitalized interest
 
50,974

 
41,052

Total unproved properties, not being amortized
 
395,291

 
323,688

Other property and equipment
 
16,323

 
17,079

Accumulated depreciation
 
(6,523
)
 
(5,641
)
Other property and equipment, net
 
9,800

 
11,438

Total property and equipment, net
 
$
1,901,072

 
$
1,487,674