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Debt and Credit Agreements (Tables)
6 Months Ended
Jun. 30, 2018
Debt Disclosure [Abstract]  
Debt and credit agreement components
The Company’s debt and credit agreements consisted of the following:
(In thousands)
 
June 30,
2018
 
December 31,
2017
Total debt
 
 
 
 
6.51% weighted-average senior notes (1)
 
$
361,000

 
$
361,000

9.78% senior notes (2)
 
67,000

 
67,000

5.58% weighted-average senior notes
 
175,000

 
175,000

3.65% weighted-average senior notes
 
925,000

 
925,000

Revolving credit facility
 

 

Unamortized debt issuance costs
 
(5,428
)
 
(6,109
)
 
 
$
1,522,572

 
$
1,521,891

_______________________________________________________________________________
(1) Includes $237.0 million of current portion of long-term debt at June 30, 2018 and December 31, 2017, respectively.
(2) Includes $67.0 million of current portion of long-term debt at June 30, 2018 and December 31, 2017, respectively.