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Debt - Second Amended and Restated Senior Secured Credit Facilities - Additional Information (Detail) - USD ($) $ in Millions |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 13, 2025 | Jan. 30, 2025 | Jun. 12, 2023 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Debt Instrument [Line Items] |  |  |  |  |  |
Original issuance discount |  |  |  | $ 2.0 | $ 0.0 |
Second amended and restated senior secured credit facilities |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Original issuance discount | $ 0.7 |  |  |  |  |
Second amended and restated senior secured credit facilities | Term Loan Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 2.25% |  |
Step-down percentage |  |  |  | 0.25% |  |
Second amended and restated senior secured credit facilities | Term Loan Facility [Member] | SOFR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 3.25% |  |
Second amended and restated senior secured credit facilities | Term Loan Facility [Member] | One-Month Term SOFR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.00% |  |
Second amended and restated senior secured credit facilities | Term Loan Facility [Member] | Federal Funds Effective Swap Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 50.00% |  |
Second amended and restated senior secured credit facilities | Term Loan Facility [Member] | Bank of America [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured debt maturity period |  | 7 years |  |  |  |
Secured debt |  | $ 515.0 |  |  |  |
Debt maturity date |  | Jan. 30, 2032 |  |  |  |
Second amended and restated senior secured credit facilities | Revolving Credit Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.25% |  |
Step-up percentage |  |  |  | 0.25% |  |
First lien net leverage ratio |  |  |  | 2.50% |  |
Additional step-up percentage |  |  |  | 0.25% |  |
First lien net leverage ratio for additional step-up percentage |  |  |  | 2.75% |  |
Second amended and restated senior secured credit facilities | Revolving Credit Facility [Member] | SOFR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 2.25% |  |
Second amended and restated senior secured credit facilities | Revolving Credit Facility [Member] | One-Month Term SOFR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.00% |  |
Second amended and restated senior secured credit facilities | Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 50.00% |  |
Second amended and restated senior secured credit facilities | Revolving Credit Facility [Member] | Bank of America [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured debt |  | $ 110.0 |  |  |  |
Debt maturity date |  | Jan. 30, 2030 |  |  |  |
Second amended and restated revolving credit facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Unpaid debt issuance costs |  |  |  | $ 0.0 |  |
Unutilized commitments fee percentage |  |  |  | 0.25% |  |
Stand-by letters of credit |  |  |  | $ 0.5 |  |
Second amended and restated revolving credit facility | Maximum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
First lien net leverage ratio |  |  |  | 3.50% |  |
Unutilized commitments fee percentage |  |  |  | 0.50% |  |
Second amended and restated revolving credit facility | Minimum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
First lien net leverage ratio |  |  |  | 3.00% |  |
Unutilized commitments fee percentage |  |  |  | 0.375% |  |
Second amended and restated revolving credit facility | Other Noncurrent Assets [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issuance costs incurred |  |  |  | $ 0.8 |  |
Second Amended and Restated Term Loan Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured debt |  |  |  | $ 505.0 |  |
Debt maturity date |  |  |  | Jan. 30, 2032 |  |
Borrowings outstanding |  |  |  | $ 513.7 |  |
Net proceeds from loan |  |  |  | 409.1 |  |
Amortization of original issuance discount related to loss on extinguishment of debt |  |  |  | 1.3 |  |
Third party fees |  |  |  | 7.7 |  |
Capitalized debt issuance costs |  |  |  | 1.3 |  |
Debt issuance costs incurred |  |  |  | 2.0 |  |
Original issuance discount |  |  |  | 1.3 |  |
Quarterly installment percentage of principal amount outstanding |  | 0.25% |  |  |  |
Second Amended and Restated Term Loan Facility [Member] | Interest Expense [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Third party fees |  |  |  | 6.4 |  |
Second Amended and Restated Term Loan Facility [Member] | Funded Through Non-cash Rollover from Existing Lenders [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net proceeds from loan |  |  |  | 239.6 |  |
Second Amended and Restated Term Loan Facility [Member] | Funded Through Cash Transactions [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net proceeds from loan |  |  |  | $ 169.5 |  |
Previous Extended Term Loan Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured debt |  |  |  |  |  | $ 402.7
Debt maturity date |  |  | May 22, 2026 |  |  |
Borrowings outstanding |  |  | $ 415.3 |  |  |
Debt issuance costs incurred |  |  |  |  |  | $ 0.9
Previous Senior Secured Credit Facilities | SOFR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 5.00% |  |
Credit spread adjustment |  |  |  | 0.10% |  |
Previous Senior Secured Credit Facilities | ABR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 4.00% |  |

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