Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Total Revenue	$ 174,738	$ 164,551
Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue	158,864	150,344
Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue	1,113	1,087
Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue	12,236	11,822
Other fees
Disaggregation of Revenue [Line Items]
Total Revenue	2,525	1,298
Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue	174,799	160,873
Corporate and Other
Disaggregation of Revenue [Line Items]
Total Revenue	(61)	3,678
Corporate and Other | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue	(61)	3,678
Corporate and Other | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue	0	0
Corporate and Other | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue	0	0
Corporate and Other | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue	0	0
Military+ | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue	89,443	83,946
Military+ | Operating Segments | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue	88,005	82,551
Military+ | Operating Segments | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue	1,113	1,087
Military+ | Operating Segments | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue	0	0
Military+ | Operating Segments | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue	325	308
Health+ | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenue	85,356	76,927
Health+ | Operating Segments | Instructional services, net of grants and scholarships
Disaggregation of Revenue [Line Items]
Total Revenue	70,920	64,115
Health+ | Operating Segments | Graduation fees
Disaggregation of Revenue [Line Items]
Total Revenue	0	0
Health+ | Operating Segments | Textbook and other course materials
Disaggregation of Revenue [Line Items]
Total Revenue	12,236	11,822
Health+ | Operating Segments | Other fees
Disaggregation of Revenue [Line Items]
Total Revenue	$ 2,200	$ 990