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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information
SUPPLEMENTAL CASH FLOW INFORMATION
 
Year Ended December 31
 
2015
 
2014
 
2013
 
(In thousands)
Cash paid for interest and financing charges, net of capitalized interest
$
49,593

 
$
52,122

 
$
90,695

Net cash paid (received) for taxes
(29,157
)
 
(31,469
)
 
401,641

Non-cash additions to property, plant and equipment, including capital leases
10,129

 
7,455

 
6,672