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Debt - Narrative (Details) shares in Thousands |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |
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Aug. 21, 2025 USD ($) | Jun. 19, 2025 USD ($) | Dec. 06, 2024 USD ($) day | Jan. 20, 2023 USD ($) | Aug. 01, 2022 USD ($) | Oct. 31, 2018 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) shares | Sep. 30, 2024 USD ($) | Aug. 31, 2025 USD ($) | Aug. 19, 2025 USD ($) | Aug. 18, 2025 USD ($) | Dec. 31, 2023 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of short-term debt, net |  |  |  |  |  |  | $ 431,000 | $ 0 | $ 431,000 | $ 0 |  |  |  |
Upfront fees (in percent) |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |
Prepayment penalty after first anniversary of closing date but prior to second anniversary of closing date (in percent) |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |
Prepayment penalty after second anniversary of closing date but prior to third anniversary of closing date (in percent) |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |
Commitment fee percentage |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |
Repayment of long-term debt |  |  |  |  |  |  |  |  | $ 229,255,000 | 0 |  |  |  |
Payments for Repurchase of Common Stock |  |  |  |  |  |  |  |  | $ 39,996,000 | $ 0 |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase covenant, sale price as a percentage of conversion price |  |  |  |  |  |  |  |  | 130.00% |  |  |  |  |
Repurchase covenant, trading days, minimum |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |
Consecutive trading days, minimum |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
Payments of financing costs |  | $ 9,300,000 |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Repurchase of Common Stock | $ 40,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 240,000,000 | $ 175,000,000 |  |  |  |  |  |  |  |  |
Closing fee (in percent) |  |  |  | 3.00% | 2.00% |  |  |  |  |  |  |  |  |
Number of days prior to any junior debt maturity | day |  |  | 91 |  |  |  |  |  |  |  |  |  |  |
Line of credit | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 50,000,000 | $ 25,000,000 | $ 50,000,000 |  |  |  |  |  |  |  |  |
Closing fee (in percent) |  |  | 1.00% | 3.00% | 2.00% |  |  |  |  |  |  |  |  |
Line of credit | 2022 Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment penalty prior to first anniversary of closing date (in percent) |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |
Secured Debt | First And Second Incremental Lien Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  | 150,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Debt covenant, draw amount restriction, maximum cash and cash equivalents threshold |  | 125,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  | 3,300,000 |  |  |  |  |  |  |  |  |  |  |  |
Loss on incremental facility |  | $ 6,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Second Lien Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate per annum |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  | $ 175,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Second Lien Term Loan | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 6.00% |  |  |  |  |  |  |  |  |  |  |  |
Delayed Draw Term Loan Facility 2024 - A |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upfront fees (in percent) |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |
Delayed Draw Term Loan Facility 2024 - A | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |
Delayed Draw Term Loan Facility 2024 - B | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 75,000,000 |  |  |  |  |  |  |  |  |  |  |
2025 Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount at issuance |  |  |  |  |  | $ 172,500,000 | $ 172,500,000 |  | $ 172,500,000 |  |  |  |  |
Interest rate per annum |  |  |  |  |  | 1.50% | 1.50% |  | 1.50% |  |  |  |  |
Conversion amount (in shares) | shares |  |  |  |  |  |  |  |  | 5,160 |  |  |  |  |
Debt instrument, repurchase amount | 167,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of short-term debt, net |  |  |  |  |  |  | $ 400,000 |  | $ 400,000 |  |  |  |  |
Conversion rate per $1,000 of principal |  |  |  |  |  |  |  |  | 0.0299135 |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  | 5,929,000 |  | $ 5,929,000 |  |  |  |  |
Unamortized debt discount and issuance costs |  |  |  |  |  |  | 0 |  | $ 0 |  |  |  |  |
3.50% Convertible Senior Notes Due 2029 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount at issuance |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 402,500,000
Interest rate per annum |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.50%
4.50% Convertible Senior Notes Due 2031 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount at issuance | 166,800,000 |  |  |  |  |  |  |  |  |  | $ 166,800,000 |  | $ 145,000,000.0 |
Interest rate per annum |  |  |  |  |  |  |  |  |  |  | 4.50% |  | 4.50% |
Proceeds from Debt, net of issuance costs | $ 161,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Additional Purchase Option, Amount |  |  |  |  |  |  |  |  |  |  |  | $ 21,800,000 |  |
Senior Convertible Notes Due 2029 And 2025 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion amount (in shares) | shares |  |  |  |  |  |  |  |  | 22,900 |  |  |  |  |
Senior Convertible Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, repurchase price due to fundamental change as percentage of principal amount |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Repurchase covenant, sale price as a percentage of conversion price |  |  |  |  |  |  |  |  | 130.00% |  |  |  |  |
Repurchase covenant, trading days, minimum |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |
Consecutive trading days, minimum |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
Repurchase covenant, repurchase price due to change in sale price as percentage of conversion price |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Senior Convertible Notes Due 2031 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount at issuance |  |  |  |  |  |  | $ 166,750,000 |  | $ 166,750,000 |  |  |  |  |
Interest rate per annum |  |  |  |  |  |  | 4.50% |  | 4.50% |  |  |  |  |
Conversion amount (in shares) | shares |  |  |  |  |  |  |  |  | 12,325 |  |  |  |  |
Repurchase covenant, sale price as a percentage of conversion price |  |  |  |  |  |  |  |  | 150.00% |  |  |  |  |
Repurchase covenant, trading days, minimum |  |  |  |  |  |  |  |  | 20 days |  |  |  |  |
Consecutive trading days, minimum |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |
Repurchase covenant, repurchase price due to fundamental change as percentage of principal amount | 100.00% |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Conversion rate per $1,000 of principal |  |  |  |  |  |  |  |  | 0.0739098 |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  | $ 5,791,000 |  | $ 5,791,000 |  |  |  |  |
Unamortized debt discount and issuance costs |  |  |  |  |  |  | 5,685,000 |  | 5,685,000 |  |  |  |  |
Repayment of long-term debt | $ 166,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |
2029 Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount at issuance |  |  |  |  |  |  | $ 402,500,000 |  | $ 402,500,000 |  |  |  |  |
Interest rate per annum |  |  |  |  |  |  | 3.50% |  | 3.50% |  |  |  |  |
Conversion amount (in shares) | shares |  |  |  |  |  |  |  |  | 10,592 |  |  |  |  |
Conversion rate per $1,000 of principal |  |  |  |  |  |  |  |  | 0.0263125 |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  | $ 11,628,000 |  | $ 11,628,000 |  |  |  |  |
Unamortized debt discount and issuance costs |  |  |  |  |  |  | 8,137,000 |  | 8,137,000 |  |  |  |  |
2029 Notes | Senior Notes | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of days prior to any junior debt maturity | day |  |  | 180 |  |  |  |  |  |  |  |  |  |  |
2022 Credit Agreement | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  | 200,000,000.0 |  | 200,000,000.0 |  |  |  |  |
2022 Credit Agreement | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, remaining borrowing capacity |  |  |  |  |  |  | 77,500,000 |  | 77,500,000 |  |  |  |  |
2022 Credit Agreement | Line of credit | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, current borrowing capacity |  |  |  |  |  |  | 200,000,000.0 |  | 200,000,000.0 |  |  |  |  |
2022 Credit Agreement | Line of credit | Secured Debt | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 4.00% |  |  |  |  |  |  |  |  |
2022 Credit Agreement | Line of credit | Secured Debt | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |
2022 Credit Agreement | Line of credit | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, current borrowing capacity |  |  |  |  |  |  | $ 15,000,000.0 |  | $ 15,000,000.0 |  |  |  |  |
2022 Credit Agreement | Line of credit | Revolving credit facility | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 5.50% |  |  |  |  |  |  |  |  |
2022 Credit Agreement | Line of credit | Revolving credit facility | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 4.50% |  |  |  |  |  |  |  |  |
2022 Credit Agreement | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized debt discount and issuance costs |  |  |  |  | $ 13,300,000 |  |  |  |  |  |  |  |  |
2024 Notes | Senior Notes | Common Class A | Class A Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion rate per $1,000 of principal |  |  |  |  |  | 0.0556153 |  |  |  |  |  |  |  |

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