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Additional Balance Sheet Information
 12 Months Ended
Dec. 31, 2013
Text Block [Abstract]  
Additional Balance Sheet Information

3. Additional Balance Sheet Information

Accounts receivable at December 31, 2013 and 2012 consisted of the following:

 

     December 31,  

(Thousands of dollars)

    2013     2012  

Joint interest billings

    $ 6,287      $ 2,189   

Trade receivables

      2,014        1,580   

Oil and gas sales

      9,604        9,362   

Other

      122        436   
  

 

 

    

 

 

  
     18,027        13,567   

Less: Allowance for doubtful accounts

      (334 )      (355 ) 
  

 

 

    

 

 

  

Total

    $ 17,693      $ 13,212   
  

 

 

    

 

 

  

Accounts payable at December 31, 2013 and 2012 consisted of the following:

 

     December 31,  

(Thousands of dollars)

    2013      2012  

Trade

    $ 1,596       $ 3,968   

Royalty and other owners

      7,391         9,652   

Partner advances

      3,378         3,589   

Prepaid drilling deposits

      978         306   

Other

      2,906         2,053   
  

 

 

     

 

 

  

Total

    $ 16,249       $ 19,568   
  

 

 

     

 

 

  

Accrued liabilities at December 31, 2013 and 2012 consisted of the following:

 

     December 31,  

(Thousands of dollars)

    2013      2012  

Compensation and related expenses

    $ 3,062       $ 2,517   

Property costs

      3,119         4,549   

Income tax

      268         —     

Other

      383         552   
  

 

 

     

 

 

  

Total

    $ 6,832       $ 7,618