Subsequent Event	6 Months Ended
Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Event On April 1, 2021, we called the entire outstanding balance of $197.4 million on our 5.50% senior notes due 2023 at par plus a premium. In connection with the repayment, we recognized losses on extinguishment of debt in the aggregate amount of $2.8 million, which included a $1.8 million call premium and $1.0 million from the write-off of unamortized debt issuance costs.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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