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Accounts Payable and Accrued Expenses
9 Months Ended
Sep. 30, 2018
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Expenses Accounts Payable and Accrued Expenses
Accounts payable and accrued expenses consist of the following (in thousands):
September 30, 2018December 31, 2017
Accounts payable and other accrued expenses
$54,957 $75,191 
Accrued interest
65 1,385 
Revenues and royalties payable
42,075 37,274 
Payroll and benefits
15,719 21,475 
Drilling advances
164 3,830 
Total accounts payable and accrued expenses
$112,980 $139,155