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Senior Notes (Tables)
3 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]  
Carrying Amounts and Fair Values of Senior Notes
The following table presents the carrying amounts and fair values for the Senior Notes at December 31, 2018 and September 30, 2018:
 
December 31, 2018
 
September 30, 2018
 
Carrying
Amounts (1)
 
Fair Value
 
Carrying
Amounts (1)
 
Fair Value
 
(In thousands)
The 2010 Senior Notes
113,000

 
114,144

 
113,000

 
114,413

The 2018 Senior Notes
400,000

 
388,000

 
400,000

 
404,000

       Total
$
513,000

 
$
502,144

 
$
513,000

 
$
518,413


(1) Amounts exclusive of net debt issuance cost of $5.8 million and $6.1 million at December 31, 2018 and September 30, 2018, respectively.