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Property And Equipment, Net
6 Months Ended
Jun. 30, 2013
Property, Plant and Equipment [Abstract]  
Property And Equipment, Net
4. Property and Equipment, Net
At June 30, 2013 and December 31, 2012, property and equipment, net consisted of the following:
 
 
June 30,
2013
 
December 31,
2012
 
 
(In thousands)
Proved oil and gas properties
 
$
2,086,461

 
$
1,713,827

Accumulated depreciation, depletion and amortization
 
(656,660
)
 
(561,279
)
Proved oil and gas properties, net
 
1,429,801

 
1,152,548

Unproved properties, not being amortized
 
 
 
 
Unevaluated leasehold costs
 
284,362

 
238,833

Exploratory wells in progress
 
30,936

 
43,803

Capitalized interest
 
45,236

 
41,052

Total unproved properties, not being amortized
 
360,534

 
323,688

Other property and equipment
 
18,975

 
17,079

Accumulated depreciation
 
(6,448
)
 
(5,641
)
Other property and equipment, net
 
12,527

 
11,438

Total property and equipment, net
 
$
1,802,862

 
$
1,487,674



Utica Shale Joint Venture. On January 15, 2013, we exercised our option for an additional 40% in the remaining properties held through our joint venture with ACP II Marcellus LLC (“ACP II”), which is also one of our joint venture partners in the Marcellus Shale, and ACP III Utica LLC (“ACP III”), both affiliates of Avista Capital Holdings, LP, a private equity firm (collectively with ACP II and ACP III, “Avista”) by paying $63.1 million. Following the option exercise, the Company has elected to acquire additional properties on a 50/50 basis with Avista. The Company's right to receive distributions associated with the properties owned by ACP III through its B Units in ACP III terminated upon the consummation of the Company’s January 15, 2013 option to increase its interest in the Avista Utica joint venture properties.