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Additional Balance Sheet Information (Tables)
3 Months Ended
Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Components of Balance Sheet Amounts
Certain balance sheet amounts are comprised of the following:
 
(Thousands of dollars)
  
March 31,
2021
   
December 31,
2020
 
Accounts Receivable
:
          
Joint interest billing
  $1,487   $2,475 
Trade receivables
   782    1,073 
Oil and gas sales
   5,706    3,469 
Other
       802 
   
 
 
   
 
 
 
    7,975    7,819 
Less: Allowance for doubtful accounts
   (598   (598
   
 
 
   
 
 
 
Total
  $7,377   $7,221 
   
 
 
   
 
 
 
Accounts Payable:
          
Trade
  $1,450   $876 
Royalty and other owners
   3,009    3,569 
Partner advances
   227    193 
Other
   300    579 
   
 
 
   
 
 
 
Total
  $4,986   $5,217 
   
 
 
   
 
 
 
Accrued Liabilities:
          
Compensation and related expenses
  $3,943   $3,331 
Property costs
   2,161    2,056 
Taxes
 
 
1,016

 
 
 
1,016
 
Other
    167    384  
   
 
 
   
 
 
 
Total
  $7,287   $6,787