Revenue Recognition - Schedule of Disaggregation of Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 290,250	$ 256,606
U.S. Higher Education Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	219,236	196,895
U.S. Higher Education Segment | Tuition, net of discounts, grants and scholarships
Disaggregation of Revenue [Line Items]
Consolidated revenue	209,731	188,513
U.S. Higher Education Segment | Other
Disaggregation of Revenue [Line Items]
Consolidated revenue	9,505	8,382
Australia/New Zealand Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	47,375	41,503
Australia/New Zealand Segment | Tuition, net of discounts, grants and scholarships
Disaggregation of Revenue [Line Items]
Consolidated revenue	45,634	40,422
Australia/New Zealand Segment | Other
Disaggregation of Revenue [Line Items]
Consolidated revenue	1,741	1,081
Education Technology Services Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 23,639	$ 18,208