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Earnings (Loss) Per Share (Tables)
 12 Months Ended
Sep. 30, 2022
Earnings Per Share [Abstract]  
Schedule of Net Components of Basic and Diluted Earnings (Loss) Per Share
The following table reconciles the number of common shares used to compute basic and diluted earnings per common share:
Fiscal Year Ended September 30,
(in thousands, except per share amounts)202220212020
Basic earnings (loss) per common share:
Net Income (loss) - Basic$50,160 $8,612 $(68,463)
Weighted shares outstanding - Basic56,498 55,744 55,313 
Basic earnings (loss) per common share$0.89 $0.15 $(1.24)
Diluted earnings (loss) per common share:
Net Income (loss) - Basic$50,160 $8,612 $(68,463)
Add: Convertible Notes interest expense, net of tax7,489 — — 
Net Income (loss) - Diluted$57,649 $8,612 $(68,463)
Weighted shares outstanding - basic56,498 55,744 55,313 
Effect of dilution from equity-based compensation awards*678 205 — 
Effect of dilution from if-converted Convertible Notes**25,224 — — 
Weighted Shares Outstanding - Diluted82,400 55,949 55,313 
Diluted earnings (loss) per common share$0.70 $0.15 $(1.24)
Potential common shares excluded from the calculation of diluted earnings per share above:
Restricted stock***1,9751,233 2,786 
*    Includes time-based share-based awards and performance based awards for which targets for fiscal year tranches have been achieved and vesting is subject only to achievement of service conditions.
**    See Note 9: Debt for conversion price and initial conversion rate of the 2024 Convertible Notes and 2025 Convertible Notes.
***    Includes antidilutive share-based awards as well as performance-based share-based awards that are contingently issuable, but for which the condition for issuance has not been met as of the end of the reporting period.
As a result of our adoption of ASU 2020-06 on October 1, 2021, the dilutive impact of the Convertible Notes for our calculation of diluted net income per share is considered using the if-converted method. During the fiscal year ended September 30, 2022, we increased net income by $7.5 million, to arrive at the numerator used to calculate diluted earnings per common share, which represents interest expense recognized on the convertible notes that were subject to this change in methodology. For periods prior to our October 1, 2021 adoption of ASU 2020-06, we applied the treasury stock method to account for the dilutive impact of the 2024 and 2025 Convertible Notes for diluted earnings per share purposes.