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DEBT (Tables)
3 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Components of Unsecured Long-Term Debt Outstanding
We had the following unsecured long-term debt outstanding with maturities shown in the following table:
December 31, 2021September 30, 2021
(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$— $— $— $487,148 $(3,662)$483,486 
Due September 29, 2031550,000 (7,764)542,236 550,000 (8,003)541,997 
550,000 (7,764)542,236 1,037,148 (11,665)1,025,483 
Less long-term debt due within one year— — — (487,148)3,662 (483,486)
Long-term debt$550,000 $(7,764)$542,236 $550,000 $(8,003)$541,997