XML 40 R14.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventories
6 Months Ended
Jun. 30, 2012
Inventories  
Inventories

7.     Inventories

 

Inventories are valued principally at the lower of cost, determined using the average cost method, or market. Costs for raw materials and finished goods include materials, labor, and production overhead. Inventories consisted of the following (in thousands):

 

 

 

June 30,
2012

 

December 31,
2011

 

Lime and limestone inventories:

 

 

 

 

 

Raw materials

 

$

4,310

 

$

3,540

 

Finished goods

 

1,727

 

2,107

 

 

 

6,037

 

5,647

 

Service parts inventories

 

5,164

 

5,117

 

Total inventories

 

$

11,201

 

$

10,764