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Business Segments
12 Months Ended
Dec. 31, 2012
Business Segments  
Business Segments

(9) Business Segments

        The Company has identified two business segments based on the distinctness of their activities and products: lime and limestone operations and natural gas interests. All operations are in the United States. In evaluating the operating results of the Company's segments, management primarily reviews revenues and gross profit. The Company does not allocate corporate overhead or interest costs to its business segments.

        Operating results and certain other financial data for the years ended December 31, 2012, 2011 and 2010 for the Company's two business segments are as follows:

 
  2012   2011   2010  

Revenues

                   

Lime and limestone operations

  $ 131,404   $ 129,704   $ 125,169  

Natural gas interests

    7,121     12,878     7,425  
               

Total revenues

  $ 138,525   $ 142,582   $ 132,594  
               

Depreciation, depletion and amortization

                   

Lime and limestone operations

  $ 13,559   $ 12,195   $ 12,135  

Natural gas interests

    1,291     1,402     1,172  
               

Total depreciation, depletion and amortization

  $ 14,850   $ 13,597   $ 13,307  
               

Gross profit

                   

Lime and limestone operations

  $ 29,499   $ 32,142   $ 31,209  

Natural gas interests

    3,939     9,207     4,832  
               

Total gross profit

  $ 33,438   $ 41,349   $ 36,041  
               

Identifiable assets, at year end

                   

Lime and limestone operations

  $ 130,059   $ 133,487   $ 136,103  

Natural gas interests

    11,943     13,789     14,036  

Unallocated corporate assets and cash items

    32,244     55,797     38,359  
               

Total identifiable assets

  $ 174,246   $ 203,073   $ 188,498  
               

Capital expenditures

                   

Lime and limestone operations

  $ 8,211   $ 7,696   $ 6,777  

Natural gas interests

    81     1,717     2,551  
               

Total capital expenditures

  $ 8,292   $ 9,413   $ 9,328