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Assets Held for Sale (Tables)
12 Months Ended
Dec. 31, 2013
Assets Held for Sale [Abstract]  
Assets Held-for-sale
The following table presents balance sheet data related to the assets held for sale:
 
December 31, 2013
 
(In thousands)
Assets
 
Oil and gas properties
$
191,384

Less: accumulated depreciation, depletion, amortization and impairment
(54,318
)
Total assets
$
137,066

 
 
Liabilities
 
Asset retirement obligation
$
1,973

Total liabilities
$
1,973

 
 
Net assets
$
135,093