Segment Information - Summary of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Revenue	$ 162,766	$ 152,895	$ 327,317	$ 307,327
Instructional costs and services	78,423	76,216	153,367	148,641
Selling and promotional	35,048	33,838	70,253	66,294
General and administrative	38,147	34,426	74,554	70,703
Income from operations before interest and income taxes	7,025	2,220	19,271	7,402
Operating Segments
Segment Reporting Information [Line Items]
Revenue	159,386	146,491	320,259	296,729
Income from operations before interest and income taxes	19,064	8,721	42,372	22,538
Operating Segments | APUS Segment
Segment Reporting Information [Line Items]
Revenue	81,731	77,048	165,677	157,704
Instructional costs and services	28,518	27,527	55,829	53,315
Selling and promotional	15,945	15,243	31,646	30,427
General and administrative	14,808	14,724	29,042	30,078
Other	1,018	1,263	3,592	2,506
Income from operations before interest and income taxes	21,442	18,291	45,568	41,378
Operating Segments | RU Segment
Segment Reporting Information [Line Items]
Revenue	59,521	53,034	118,772	106,169
Instructional costs and services	35,360	33,381	68,504	66,478
Selling and promotional	16,350	16,212	32,802	31,334
General and administrative	7,635	8,021	15,025	15,658
Other	2,152	4,246	4,489	10,491
Income from operations before interest and income taxes	(1,976)	(8,826)	(2,048)	(17,792)
Operating Segments | HCN Segment
Segment Reporting Information [Line Items]
Revenue	18,134	16,409	35,810	32,856
Instructional costs and services	11,573	11,278	22,883	21,829
Selling and promotional	1,731	1,155	3,678	2,260
General and administrative	4,699	4,355	9,359	9,128
Other	533	365	1,038	687
Income from operations before interest and income taxes	(402)	(744)	(1,148)	(1,048)
Corporate and Other
Segment Reporting Information [Line Items]
Revenue	3,380	6,404	7,058	10,598
Instructional costs and services	2,972	4,030	6,151	7,019
Selling and promotional	1,022	1,228	2,127	2,273
General and administrative	11,005	7,326	21,128	15,839
Other	420	321	753	603
Income from operations before interest and income taxes	$ (12,039)	$ (6,501)	$ (23,101)	$ (15,136)