Segment Reporting - Summary Financial Information by Reporting Segment (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenue		$ 166,740	$ 186,564	$ 335,004	$ 382,162
Percentage of total revenue		100.00%	100.00%	100.00%	100.00%
Operating Income (Loss)		$ 46,006	$ 48,094	$ 92,284	$ 91,430
Total Assets	[1]	1,078,241		1,078,241		$ 1,007,316
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue		$ 190	$ 210	$ 380	$ 476
Percentage of total revenue		0.10%	0.10%	0.10%	0.10%
Operating Income (Loss)		$ (9,810)	$ (9,435)	$ (14,974)	$ (21,792)
Total Assets	[1]	698,560		698,560		643,252
CTU [Member] | University Group [Member]
Segment Reporting Information [Line Items]
Revenue		$ 112,828	$ 119,292	$ 226,397	$ 243,784
Percentage of total revenue		67.70%	64.00%	67.60%	63.80%
Operating Income (Loss)		$ 42,890	$ 40,451	$ 85,046	$ 84,141
Total Assets	[1]	210,845		210,845		202,728
AIUS [Member] | University Group [Member]
Segment Reporting Information [Line Items]
Revenue		$ 53,722	$ 67,062	$ 108,227	$ 137,902
Percentage of total revenue		32.20%	35.90%	32.30%	36.10%
Operating Income (Loss)		$ 12,926	$ 17,078	$ 22,212	$ 29,081
Total Assets	[1]	$ 168,836		$ 168,836		$ 161,336

[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.