XML 42 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2013
Commitments and Contingencies  
Schedule of outstanding purchase commitments

We had outstanding purchase commitments consisting of (in thousands): 

 

 

 

March 31,

 

December 31,

 

 

 

2013

 

2012

 

Capital commitments

 

 

 

 

 

Equipment

 

$

21,294

 

$

20,317

 

Land

 

23,700

 

23,700

 

 

 

 

 

 

 

Supplies and services

 

 

 

 

 

Coal purchase commitments

 

$

31,685

 

$

28,633

 

Transportation agreements

 

241,285

 

159,398

 

Materials and supplies

 

21,698

 

24,552