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Segment Reporting - Significant Expense Category by Reporting Segment Expenses (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses |  | $ 160,913 | $ 125,034 | $ 480,372 | $ 367,754
CTU [Member] | Academics and Student Related [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 14,972 | 14,925 | 46,206 | 45,152
CTU [Member] | Advertising and Marketing [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 14,502 | 14,854 | 41,002 | 40,389
CTU [Member] | Admissions [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 11,812 | 11,301 | 36,092 | 34,386
CTU [Member] | Administrative [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1],[2] | 20,745 | 19,408 | 63,176 | 60,134
CTU [Member] | Bad Debt [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 5,262 | 5,003 | 13,681 | 13,033
CTU [Member] | Depreciation and Amortization [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 1,451 | 1,427 | 4,300 | 4,217
CTU [Member] | All Other Expenses [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1],[3] | 563 | 615 | 1,796 | 3,215
AIUS [Member] | Academics and Student Related [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 11,565 | 11,278 | 34,565 | 33,895
AIUS [Member] | Advertising and Marketing [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 11,160 | 11,953 | 31,881 | 33,789
AIUS [Member] | Admissions [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 8,746 | 8,726 | 26,565 | 26,496
AIUS [Member] | Administrative [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1],[2] | 10,830 | 10,331 | 33,059 | 32,203
AIUS [Member] | Bad Debt [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 2,588 | 3,732 | 6,847 | 8,331
AIUS [Member] | Depreciation and Amortization [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1] | 1,358 | 1,548 | 4,227 | 4,681
AIUS [Member] | All Other Expenses [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [1],[3] | 1,163 | $ 1,266 | 3,328 | $ 3,812
USAHS [Member] | Academics and Student Related [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [4] | 16,126 |  | 47,520 |
USAHS [Member] | Advertising and Marketing [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [4] | 3,923 |  | 11,699 |
USAHS [Member] | Admissions [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [4] | 1,231 |  | 3,948 |
USAHS [Member] | Administrative [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [2],[4] | 5,182 |  | 15,989 |
USAHS [Member] | Bad Debt [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [4] | 55 |  | 395 |
USAHS [Member] | Depreciation and Amortization [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [4] | 7,133 |  | 23,207 |
USAHS [Member] | All Other Expenses [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating expenses | [3],[4] | $ 4,255 |  | $ 13,051 |
[1] | The prior period operating results for CTU and AIUS were recast to reflect the transition of the Hippo Education institution from CTU to AIUS.
[2] | Administrative expense includes allocations from Corporate and Other.
[3] | All other expenses primarily include occupancy and asset impairment.
[4] | USAHS includes financial information starting from the acquisition date on December 2, 2024.

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