Segment Information - Summary of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Revenue	$ 164,551	$ 154,432
Instructional costs and services	74,944	72,425
Selling and promotional	35,205	32,456
General and administrative	36,407	36,277
Income from operations before interest and income taxes	12,246	5,182
Operating Segments
Segment Reporting Information [Line Items]
Revenue	160,873	150,238
Income from operations before interest and income taxes	23,308	13,817
Operating Segments | APUS Segment
Segment Reporting Information [Line Items]
Revenue	83,946	80,656
Instructional costs and services	27,311	25,788
Selling and promotional	15,701	15,184
General and administrative	14,234	15,354
Other	2,574	1,243
Income from operations before interest and income taxes	24,126	23,087
Operating Segments | RU Segment
Segment Reporting Information [Line Items]
Revenue	59,251	53,135
Instructional costs and services	33,144	33,097
Selling and promotional	16,452	15,122
General and administrative	7,390	7,637
Other	2,337	6,245
Income from operations before interest and income taxes	(72)	(8,966)
Operating Segments | HCN Segment
Segment Reporting Information [Line Items]
Revenue	17,676	16,447
Instructional costs and services	11,310	10,552
Selling and promotional	1,947	1,105
General and administrative	4,660	4,773
Other	505	321
Income from operations before interest and income taxes	(746)	(304)
Corporate and Other
Segment Reporting Information [Line Items]
Revenue	3,678	4,194
Instructional costs and services	3,179	2,988
Selling and promotional	1,105	1,045
General and administrative	10,123	8,513
Other	333	283
Income from operations before interest and income taxes	$ (11,062)	$ (8,635)