Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total Revenue	$ 158,330	$ 163,215	$ 162,766	$ 164,551	$ 164,110	$ 153,122	$ 152,895	$ 154,432	$ 648,862	$ 624,559	$ 600,545
Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue									591,822	575,687	554,711
Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue									3,882	2,454	1,764
Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue									47,667	42,228	40,263
Other fees
Disaggregation of Revenue [Line Items]
Total Revenue									5,491	4,190	3,807
Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue									641,056	600,601	574,325
Corporate and Other
Disaggregation of Revenue [Line Items]
Total Revenue									7,806	23,958	26,220
Corporate and Other | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue									7,806	23,958	26,220
Corporate and Other | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue									0	0	0
Corporate and Other | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue									0	0	0
Corporate and Other | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue									0	0	0
APUS | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue									319,842	317,049	303,303
APUS | Operating Segments | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue									314,776	313,924	300,794
APUS | Operating Segments | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue									3,882	2,454	1,764
APUS | Operating Segments | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue									0	0	0
APUS | Operating Segments | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue									1,184	671	745
RU | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue									246,231	216,262	214,086
RU | Operating Segments | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue									207,236	181,975	179,699
RU | Operating Segments | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue									0	0	0
RU | Operating Segments | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue									35,955	32,041	32,008
RU | Operating Segments | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue									3,040	2,246	2,379
HCN | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue									74,983	67,290	56,936
HCN | Operating Segments | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue									62,004	55,830	47,998
HCN | Operating Segments | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue									0	0	0
HCN | Operating Segments | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue									11,712	10,187	8,255
HCN | Operating Segments | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue									$ 1,267	$ 1,273	$ 683