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Revenue Recognition - Summary of Disaggregation of Revenue by Major Source (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disaggregation Of Revenue [Line Items]      
Total revenue $ 681,263 $ 710,004 $ 695,208
Tuition, Net [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [1] 645,419 671,070 654,760
Technology and Other Fees [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue 30,652 31,850 32,912
Tuition and Fees, Net [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue 676,071 702,920 687,672
Other [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [2] 5,192 7,084 7,536
University Group [Member] | CTU [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [3],[4] 456,899 468,926 419,617
University Group [Member] | AIUS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [5],[6] 213,547 240,300 274,479
University Group [Member] | USAHS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [7] 10,041    
University Group [Member] | Tuition, Net [Member] | CTU [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [1],[4] 433,051 443,971 396,093
University Group [Member] | Tuition, Net [Member] | AIUS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [1],[6] 202,790 227,099 258,667
University Group [Member] | Tuition, Net [Member] | USAHS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [1],[7] 9,578    
University Group [Member] | Technology and Other Fees [Member] | CTU [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [4] 20,599 20,849 20,270
University Group [Member] | Technology and Other Fees [Member] | AIUS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [6] 9,595 11,001 12,642
University Group [Member] | Technology and Other Fees [Member] | USAHS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [7] 458    
University Group [Member] | Tuition and Fees, Net [Member] | CTU [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [4] 453,650 464,820 416,363
University Group [Member] | Tuition and Fees, Net [Member] | AIUS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [6] 212,385 238,100 271,309
University Group [Member] | Tuition and Fees, Net [Member] | USAHS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [7] 10,036    
University Group [Member] | Other [Member] | CTU [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [2],[4] 3,249 4,106 3,254
University Group [Member] | Other [Member] | AIUS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [2],[6] 1,162 2,200 3,170
University Group [Member] | Other [Member] | USAHS [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [2],[7] 5    
Corporate and Other [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue 776 778 1,112
Corporate and Other [Member] | Other [Member]      
Disaggregation Of Revenue [Line Items]      
Total revenue [2] $ 776 $ 778 $ 1,112
[1] Tuition includes revenue earned for all degree-granting programs as well as revenue earned for non-degree and professional development programs.
[2] Other revenue primarily includes contract training revenue and miscellaneous non-student related revenue.
[3] CTU includes results of operations from Coding Dojo beginning on the acquisition date of December 1, 2022.
[4] CTU includes revenue from Coding Dojo beginning on the acquisition date of December 1, 2022.
[5] AIUS includes results of operations from CalSouthern beginning on the acquisition date of July 1, 2022.
[6] AIUS includes revenue from CalSouthern beginning on the acquisition date of July 1, 2022.
[7] USAHS includes revenue beginning on the acquisition date of December 2, 2024.