Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Details) - USD ($) $ in Thousands	6 Months Ended
Mar. 31, 2022	Sep. 30, 2021	Jun. 02, 2020
Senior Credit Facilities
Debt Instrument [Line Items]
Debt Instrument, unamortized discount	$ 1,571	$ 1,829
Debt instrument, deferred issuance costs	$ 190	$ 221
Debt instrument, effective interest rate	3.25%	2.86%
3.00% Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Debt instrument, interest rate	3.00%		3.00%
Debt instrument, maturity year	2025
Debt Instrument, unamortized discount	$ 13,176	$ 15,019
Debt instrument, deferred issuance costs	$ 3,313	$ 3,776
Debt instrument, effective interest rate	6.29%

Debt instrument maturity year.

No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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