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Other Property And Equipment
12 Months Ended
Dec. 31, 2011
Other Property And Equipment [Abstract]  
Other Property And Equipment

8. Other Property and Equipment

Other fixed assets, net include the following (in thousands):

             
    At December 31,  
    2011     2010  
Other fixed assets $ 2,071   $ 1,314  
Accumulated depreciation   (858 )   (677 )
Other fixed assets, net $ 1,213   $ 637  

 

     Other fixed assets include leasehold improvements, equipment and furniture. Depreciation expense for the years ended December 31, 2011, 2010, and 2009 was approximately $227,000, $177,000, and $182,000, respectively.

     Furniture, fixtures and non-oil and natural gas property and equipment are depreciated using the straight-line method based on the estimated useful lives of the respective assets, generally ranging from three to twenty years. Leasehold improvements are amortized over the shorter of their economic lives or the lease term. Repairs and maintenance costs are expensed in the period incurred.