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Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2012
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments
Fair Value of Financial Instruments
 
Cash and cash equivalents, receivables, accounts payable and accrued liabilities were each estimated to have a fair value approximating the carrying amount due to the short maturity of those instruments.  Indebtedness under our secured bank credit facility was estimated to have a fair value approximating the carrying amount since the interest rate is generally market sensitive. 

The financial assets and liabilities measured on a recurring basis at December 31, 2012 and 2011 were commodity derivatives. The fair value of all derivative contracts is reflected on the balance sheet as detailed in the following schedule:
 
 
December 31,
 
 
2012
 
2011
 
 
Significant Other
Observable Inputs
Description
 
(Level 2)
 
 
(In thousands)
Assets:
 
 

 
 

Fair value of commodity derivatives
 
$
11,731

 
$

Total assets
 
$
11,731

 
$

Liabilities:
 
 

 
 

Fair value of commodity derivatives
 
$

 
$
6,127

Total liabilities
 
$

 
$
6,127



Fair Value of Other Financial Instruments
 
We estimate the fair value of our 2019 Senior Notes using quoted market prices (Level 1 inputs). Fair value is compared to the carrying value in the table below:
 
 
 
December 31, 2012
 
December 31, 2011
 
 
Carrying
 
Estimated
 
Carrying
 
Estimated
Description
 
Amount
 
Fair Value
 
Amount
 
Fair Value
 
 
(In thousands)
7.75% Senior Notes due 2019
 
$
349,585

 
$
348,700

 
$
349,535

 
$
334,300