Selected Account Information - Components of Non-Operating Gains (Losses), Net (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Selected Account Information [Abstract]
Gain on debt extinguishment	$ 0	$ 380	$ 85	$ 5,329
Unrealized loss on equity securities	0	(34)	(1)	(67)
Other	0	85	0	85
Non-operating gains, net	$ 0	$ 431	$ 84	$ 5,347

Gains on extinguishment of debt.

No definition available.

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- Definition

Selected Account Information

+ References

No definition available.

+ Details

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- Definition

Amount of unrealized loss on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117546-209714

+ Details

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- Definition

The aggregate amount of gains or losses resulting from nonoperating activities (for example, interest and dividend revenue, property, plant and equipment impairment loss, and so forth).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7,9)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

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- Definition

Amount of gain (loss) related to nonoperating activities, classified as other.

+ References

+ Details

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