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Accounts Payable and Accrued Expenses
12 Months Ended
Dec. 31, 2012
Accounts Payable and Accrued Liabilities, Current [Abstract]  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following (in thousands):
 
December 31,
 
2012
 
2011
Accounts payable and other accrued expenses
$
461,067

 
$
313,901

Accrued interest
92,125

 
53,388

Production payable
97,245

 
59,825

Drilling advances
68,742

 
36,637

Payroll and benefits
29,811

 
26,402

Convertible perpetual preferred stock dividends
16,572

 
16,572

Related party
982

 
59

Total accounts payable and accrued expenses
$
766,544

 
$
506,784