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Debt
 12 Months Ended
Sep. 30, 2025
Debt Disclosure [Abstract]  
Debt
NOTE 8: DEBT
The following table presents the Company’s debt instruments outstanding:
 September 30, 2025September 30, 2024
(in thousands)Gross AmountDebt Issuance CostsCarrying
Amount		Gross AmountDebt Issuance CostsCarrying
Amount
2032 Senior Notes$300,000 $(7,182)$292,818 $— $— $— 
2029 Convertible Notes230,000 (4,742)225,258 230,000 (5,744)224,256 
2025 Convertible Notes— — — 103,373 (301)103,072 
Total$530,000 $(11,924)$518,076 $333,373 $(6,045)$327,328 
Less current portion— — — 103,373 (301)103,072 
Total long-term debt$530,000 $(11,924)$518,076 $230,000 $(5,744)$224,256 
The following table presents the Company’s contractual maturities related to the debt instruments as of September 30, 2025
Schedule of Contractual Maturities
(in thousands)2029 Convertible Notes2032 Senior NotesTotal
Fiscal 2026
$— $— $— 
Fiscal 2027
— — — 
Fiscal 2028
— — — 
Fiscal 2029
— — — 
Fiscal 2030
230,000 — 230,000 
Thereafter— 300,000 300,000 
Total long-term debt$230,000 $300,000 $530,000 
The following table presents the Company’s interest expense related to the 2032 Senior Notes and the convertible notes:
Fiscal Year Ended September 30,
(in thousands)202520242023
2032 Senior Notes:
Contractual interest expense$11,247 $— $— 
Amortization of deferred financing costs423 — — 
Total interest expense$11,670 $— $— 
2029 Convertible Notes:
Contractual interest expense$8,624 $8,625 $6,900 
Amortization of deferred financing costs1,002 972 742 
Total interest expense$9,626 $9,597 $7,642 
2025 Convertible Notes:
Contractual interest expense$1,432 $2,455 $2,779 
Amortization of deferred financing costs301 509 559 
Gain on extinguishment— — (5,389)
Total interest expense$1,733 $2,964 $(2,051)
2024 Convertible Notes:
Contractual interest expense$— $742 $1,609 
Amortization of deferred financing costs— 124 260 
Loss on extinguishment— — 8,935 
Total interest expense$— $866 $10,804 
2032 Senior Notes
In March 2025, we issued $300.00 million aggregate principal amount of the Company’s 7.375% senior notes due 2032 (the “2032 Senior Notes”), for which $300.0 million remains outstanding as of September 30, 2025. The 2032 Senior Notes were issued pursuant to an indenture, dated March 28, 2025 (the “2025 Indenture”), by and among the Company, certain of the Company’s wholly-owned domestic subsidiaries and Truist Bank, as trustee in a private placement under Rule 144A and Regulation S under the Securities Act of 1933 (the “Securities Act”). The 2032 Senior Notes have not been and will not be registered under the federal securities laws or the securities laws of any state or any other jurisdiction. We are not required to register the 2032 Senior Notes for resale under the Securities Act, or the securities laws of any other jurisdiction, and is not required to exchange the 2032 Senior Notes for notes registered under the Securities Act or the securities laws of any other jurisdiction and has no present intention to do so. As a result, Rule 3-10 of Regulation S-X promulgated by the SEC is not applicable and no separate financial statements are required for the guarantor subsidiaries.
The net proceeds from the offering were approximately $292.4 million, after deducting the initial purchasers’ discounts and offering expenses payable by us. We capitalized $7.6 million in debt issuance costs, which consisted primarily of the initial purchaser’s discount and fees and legal and other professional expenses. The debt issuance costs are being amortized over the life of the 2032 Senior Notes as a component of interest expense and are carried as a direct deduction from the carrying amount of the 2032 Senior Notes in the accompanying consolidated balance sheets.
The 2032 Senior Notes pay interest semi-annually in arrears at a rate of 7.375% per annum on April 1 and October 1 of each year, commencing October 1, 2025, and mature on April 1, 2032, unless earlier redeemed or repurchased in accordance with the terms prior to such date. The effective interest rate is approximately 7.85%. The 2025 Indenture contains certain customary affirmative covenants, negative covenants and events of default. As of September 30, 2025, we were in compliance with all covenants relating to the 2032 Senior Notes.

The 2032 Senior Notes are senior unsecured obligations of the Company and are fully and unconditionally guaranteed by certain of the Company’s wholly-owned domestic subsidiaries. We may redeem some or all of the 2032 Senior Notes at any time on or after April 1, 2028, at the redemption prices set forth in the 2025 Indenture, plus accrued and unpaid interest, if any. Additionally, we may redeem some or all of the 2032 Senior Notes at a price equal to 100% of principal amount, plus accrued and unpaid interest, if any, plus a “make-whole” premium set forth in the Indenture prior to April 1, 2028. We may redeem up to 40% of the 2032 Senior Notes prior to April 1, 2028 with the proceeds of certain equity offerings at the redemption price set forth in the 2025 Indenture. If we sell certain assets or consummate certain change in control transactions, we will be required to make an offer to repurchase the 2032 Senior Notes.

3.750% Convertible Senior Notes Due 2029
In December 2022, we issued $230.0 million aggregate principal amount of 3.750% Convertible Senior Notes Due 2029 (the “2029 Convertible Notes”), for which $230.0 million remains outstanding as of September 30, 2025. The 2029 Convertible Notes were issued pursuant to an indenture dated December 12, 2022 (the “2022 Indenture”) by and between the Company and Truist Bank, as trustee. The 2029 Convertible Notes were issued in a private offering under Rule 144A under the Securities Act of 1933. The 2029 Convertible Notes pay interest semi-annually in arrears at a rate of 3.750% per annum on June 15 and December 15 of each year, commencing June 15, 2023, and mature on December 15, 2029 (the “2029 Maturity Date”), unless converted, redeemed or repurchased in accordance with the terms prior to such date. At maturity, the holders of the 2029 Convertible Notes will be entitled to receive cash equal to the principal of the 2029 Convertible Notes plus accrued interest.
The effective interest rate is approximately 4.28%. As of September 30, 2025, the remaining unamortized debt issuance costs will be amortized using the effective interest method through the 2029 Maturity Date assuming no early conversion.
The 2029 Convertible Notes are convertible based on an initial conversion rate of 89.0313 shares of Class A Common Stock per $1,000 principal amount (equivalent to an initial conversion price of $11.232 per share). The conversion rate will not be adjusted for any accrued and unpaid interest. The 2029 Convertible Notes contain certain make-whole fundamental change premiums and customary anti-dilution adjustments. Upon conversion, we may settle in cash, shares of Class A Common Stock or any combination thereof, at our election.
Prior to June 15, 2029, the 2029 Convertible Notes will be convertible only under the following circumstances: (1) during any fiscal quarter commencing after the fiscal quarter ending on March 31, 2023 (and only during such fiscal quarter), if the last reported sale price of our Class A Common Stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the trading price, as defined in the 2022 Indenture, per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of our Class A Common Stock and the conversion rate on such trading day; (3) if we call any or all of the 2029 Convertible Notes for redemption, at any time prior to the close of business on the business day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events, as defined in the 2022 Indenture. On or after June 15, 2029 until the close of business on the business day immediately preceding the 2029 Maturity Date, holders of 2029 Convertible Notes may, at their option, convert their 2029 Convertible Notes at any time, regardless of the foregoing circumstances.
We may not redeem the 2029 Convertible Notes prior to December 21, 2026. At our option, we may redeem for cash all or any portion of the 2029 Convertible Notes on or after December 21, 2026, if the last reported sale price of the Class A Common Stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including the trading day immediately preceding the date on which we provide notice of redemption, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which we provide notice of redemption. The redemption price will be equal to 100% of the principal amount of the 2029 Convertible Notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date.
The reported sale price of our Class A Common Stock was greater than or equal to 130% of the applicable conversion price for the 2029 Convertible Notes for at least 20 trading days in the 30 consecutive trading days ended on September 30, 2025. As a result, the 2029 Convertible Notes are convertible at the option of the holders during the fiscal quarter ended December 31, 2025.
Note Repurchases
In December 2022, we repurchased approximately $109.4 million aggregate principal amount of 2.875% Convertible Senior Notes Due 2024 for approximately $117.5 million plus accrued interest and approximately $69.1 million aggregate principal amount of 2.375% Convertible Senior Notes Due 2025 for approximately $62.9 million plus accrued interest and recognized a $3.5 million loss on extinguishment of debt recorded to “Interest expense” in our Consolidated Statement of Operations.
2.375% Convertible Senior Notes Due 2025
In April 2025, holders converted approximately $97.0 million in principal amount of the 2025 Convertible Notes into approximately 6.1 million shares of our Class A Common Stock, and with payments of cash in lieu of any fractional shares. On May 1, 2025, we repaid the remaining $6.4 million principal balance of the 2025 Convertible Notes using cash.
In May 2018, we issued $172.5 million aggregate principal amount of the 2025 Convertible Notes. The 2025 Convertible Notes were issued pursuant to an indenture dated May 14, 2018 (the “2018 Indenture”) by and between the Company and Wells Fargo Bank, National Association, as the original trustee. Effective October 1, 2019, Truist (formerly BB&T) assumed the duties and responsibilities as trustee under the 2018 Indenture. The 2025 Convertible Notes were issued in a private offering under Rule 144A under the Securities Act.
The 2025 Convertible Notes paid interest semi-annually in arrears at a rate of 2.375% per annum on May 1 and November 1 of each year, commencing November 1, 2018, and matured on May 1, 2025 (the “2025 Maturity Date”), unless converted, redeemed or repurchased in accordance with the terms prior to such date. The 2025 Convertible Notes were convertible based on an initial conversion rate of 62.8931 shares of Class A Common Stock per $1,000 principal amount (equivalent to an initial conversion price of $15.90 per share). Until the close of business on the business day immediately preceding the 2025 Maturity Date, holders of 2025 Convertible Notes could, at their option, convert their 2025 Convertible Notes at any time.
2.875% Convertible Senior Notes Due 2024
On July 1, 2024, the $34.4 million aggregate principal amount outstanding plus accrued interest was repaid using cash on hand and 77,328 Class A Common Stock shares, equal to the accreted value, were issued as part of the 2024 Convertible Notes conversion. In July 2017, we issued $143.75 million aggregate principal amount of 2.875% Convertible Senior Notes Due 2024 (the “2024 Convertible Notes”), none of which remain outstanding as of September 30, 2025. The 2024 Convertible Notes were issued pursuant to an indenture dated July 5, 2017 (the “2017 Indenture”) by and between the Company and Wells Fargo Bank, National Association, as the original trustee. Effective October 1, 2019, Truist (formerly BB&T) assumed the duties and responsibilities as trustee under the 2017 Indenture. The 2024 Convertible Notes were issued in a private offering under Rule 144A under the Securities Act of 1933. The 2024 Convertible Notes paid interest semi-annually in arrears at a rate of 2.875% per annum on January 1 and July 1 of each year, commencing January 1, 2018, and matured on July 1, 2024 (the “2024 Maturity Date”).