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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following:
 
December 31,
 
2013
 
2012
 
(In thousands)
Coal stockpiles
$
543

 
$
989

Coal fuel inventories
6,161

 
3,048

Materials and supplies
34,233

 
34,954

Reserve for obsolete inventory
(965
)
 
(1,257
)
Total
$
39,972

 
$
37,734