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New Accounting Pronouncements and Changes in Accounting (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Oct. 01, 2020	Sep. 30, 2020	Oct. 01, 2019
New Accounting Pronouncements and Changes in Accounting
(Accumulated deficits) / Retained earnings	$ (504,126)		$ 174,248
ASU 2016-02
New Accounting Pronouncements and Changes in Accounting
(Accumulated deficits) / Retained earnings				$ 87,800
ASU 2016-06
New Accounting Pronouncements and Changes in Accounting
(Accumulated deficits) / Retained earnings		$ 8,000

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-SubTopic 10
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