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DEBT (Tables)
9 Months Ended
Jun. 30, 2019
Debt Disclosure [Abstract]  
Schedule of Components of Unsecured Long-Term Debt Outstanding
At June 30, 2019 and September 30, 2018, we had the following unsecured long-term debt outstanding:
 
June 30, 2019
 
September 30, 2018
(in thousands)
Face
Amount
 
Unamortized
Discount and Debt Issuance
Cost
 
Book
Value
 
Face
Amount
 
Unamortized
Discount and Debt Issuance
Cost
 
Book
Value
Unsecured senior notes:
 
 
 
 
 
 
 
 
 
 
 
Due March 19, 2025
$
500,000

 
$
(8,349
)
 
$
491,651

 
$
500,000

 
$
(6,032
)
 
$
493,968

 
500,000

 
(8,349
)
 
491,651

 
500,000

 
(6,032
)
 
493,968

Less long-term debt due within one year

 

 

 

 

 

Long-term debt
$
500,000

 
$
(8,349
)
 
$
491,651

 
$
500,000

 
$
(6,032
)
 
$
493,968