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Segment Reporting - Significant Expense Category by Reporting Segment Expenses (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment Reporting Information [Line Items]      
Total operating expenses $ 507,010 $ 559,558 $ 565,571
CTU [Member] | Academics and Student Related [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 64,747 72,939 53,817
CTU [Member] | Advertising and Marketing [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 55,738 64,286 64,736
CTU [Member] | Admissions [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 47,969 52,645 48,629
CTU [Member] | Administrative [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [1] 84,412 85,385 70,893
CTU [Member] | Bad Debt [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 20,386 20,223 21,640
CTU [Member] | Depreciation and Amortization [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 8,513 11,561 10,069
CTU [Member] | All Other Expenses [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [2] 3,874 17,879 8,211
AIUS [Member] | Academics and Student Related [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 40,488 45,550 44,211
AIUS [Member] | Advertising and Marketing [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 44,044 38,302 62,107
AIUS [Member] | Admissions [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 33,290 38,714 45,181
AIUS [Member] | Administrative [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [1] 36,310 48,255 50,241
AIUS [Member] | Bad Debt [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 13,133 13,008 19,971
AIUS [Member] | Depreciation and Amortization [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses 3,291 4,992 9,325
AIUS [Member] | All Other Expenses [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [2] 6,809 $ 6,196 $ 10,128
USAHS [Member] | Academics and Student Related [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [3] 5,343    
USAHS [Member] | Advertising and Marketing [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [3] 1,181    
USAHS [Member] | Admissions [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [3] 524    
USAHS [Member] | Administrative [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [1],[3] 1,476    
USAHS [Member] | Bad Debt [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [3] 201    
USAHS [Member] | Depreciation and Amortization [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [3] 2,516    
USAHS [Member] | All Other Expenses [Member]      
Segment Reporting Information [Line Items]      
Total operating expenses [2],[3] $ 1,440    
[1] Administrative expense includes certain corporate overhead allocations.
[2] All other expenses primarily include occupancy and asset impairment.
[3] USAHS includes financial information starting from the acquisition date on December 2, 2024.