v3.26.1
Segment Reporting - Summary Financial Information by Reporting Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]      
Revenue $ 221,743 $ 213,004  
Percentage of total revenue 100.00% 100.00%  
Operating Income (Loss) $ 63,122 $ 51,727  
Total Assets [1] 1,288,773   $ 1,247,717
Corporate and Other [Member]      
Segment Reporting Information [Line Items]      
Revenue $ 163 $ 183  
Percentage of total revenue 0.00% 0.10%  
Operating Income (Loss) $ (6,292) $ (5,924)  
Total Assets [1] 638,356   616,502
CTU [Member] | University Group [Member]      
Segment Reporting Information [Line Items]      
Revenue $ 120,756 $ 116,074  
Percentage of total revenue 54.50% 54.50%  
Operating Income (Loss) $ 50,543 $ 46,760  
Total Assets [1] 186,925   172,405
AIUS [Member] | University Group [Member]      
Segment Reporting Information [Line Items]      
Revenue $ 57,816 $ 57,564  
Percentage of total revenue 26.10% 27.00%  
Operating Income (Loss) $ 12,564 $ 11,221  
Total Assets [1] 160,733   170,825
USAHS [Member] | University Group [Member]      
Segment Reporting Information [Line Items]      
Revenue $ 43,008 $ 39,183  
Percentage of total revenue 19.40% 18.40%  
Operating Income (Loss) $ 6,307 $ (330)  
Total Assets $ 302,759   $ 287,985
[1] Total assets are presented on a condensed consolidated basis and do not include intercompany receivable or payable activity between institutions and corporate and investments in subsidiaries.