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Leases Leases (Tables)
12 Months Ended
Dec. 31, 2012
Leases [Abstract]  
Operating Leases of Lessee Disclosure [Table Text Block]
Minimum payments due in future years under these agreements in effect at December 31, 2012 are as follows:
 
Operating
 
 
 
Leases
 
Royalties
 
(In thousands)
2013
$
26,837

 
$
26,303

2014
25,109

 
35,954

2015
17,748

 
37,725

2016
9,708

 
33,833

2017
7,306

 
32,690

Thereafter
5,334

 
147,103

 
$
92,042

 
$
313,608