Segment Reporting - Summary Financial Information by Reporting Segment (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Revenue		$ 213,004	$ 168,264
Percentage of total revenue		100.00%	100.00%
Operating Income (Loss)		$ 51,727	$ 46,278
Total Assets	[1]	1,268,544		$ 1,237,034
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue		$ 183	$ 190
Percentage of total revenue		0.10%	0.10%
Operating Income (Loss)		$ (5,924)	$ (5,164)
Total Assets	[1]	567,217		590,382
CTU [Member] | University Group [Member]
Segment Reporting Information [Line Items]
Revenue		$ 119,579	$ 113,569
Percentage of total revenue		56.10%	67.50%
Operating Income (Loss)		$ 46,097	$ 42,156
Total Assets	[1]	210,909		189,663
AIUS [Member] | University Group [Member]
Segment Reporting Information [Line Items]
Revenue		$ 54,059	$ 54,505
Percentage of total revenue		25.40%	32.40%
Operating Income (Loss)		$ 11,884	$ 9,286
Total Assets	[1]	155,782		150,437
USAHS [Member] | University Group [Member]
Segment Reporting Information [Line Items]
Revenue	[2]	$ 39,183
Percentage of total revenue	[2]	18.40%	0.00%
Operating Income (Loss)	[2]	$ (330)
Total Assets	[2]	$ 334,636		$ 306,552

[1] Total assets are presented on a condensed consolidated basis and do not include intercompany receivable or payable activity between segments and corporate and other.

[2] USAHS includes results of operations starting from the acquisition date on December 2, 2024.