Revenue - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Contract assets	$ 0	$ 0
Deferred revenue	23,760,000	21,776,000
Courses in Progress
Business Acquisition [Line Items]
Future revenue	13,000,000	12,900,000
Future Courses
Business Acquisition [Line Items]
Deferred revenue	23,800,000	21,800,000
Future revenue	10,800,000	8,900,000
HCN
Business Acquisition [Line Items]
Refund liability	$ 0	$ 0
Instructional services, net of grants and scholarships
Business Acquisition [Line Items]
Number of days of bill date to receive payment	30 days
Instructional services, net of grants and scholarships | APUS Segment | Minimum
Business Acquisition [Line Items]
Term of instruction	56 days
Instructional services, net of grants and scholarships | APUS Segment | Maximum
Business Acquisition [Line Items]
Term of instruction	112 days
Instructional services, net of grants and scholarships | HCN
Business Acquisition [Line Items]
Term of instruction	3 months
Instructional services, net of grants and scholarships | RU
Business Acquisition [Line Items]
Term of instruction	3 months
Graduation fees | APUS Segment
Business Acquisition [Line Items]
Graduation fee per degree	$ 100
Textbook and other course materials | HCN
Business Acquisition [Line Items]
Number of days of bill date to receive payment	30 days