Revenue Recognition - Schedule of Disaggregation of Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 305,958	$ 285,936	$ 908,474	$ 830,222
U.S. Higher Education Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	207,709	201,828	643,558	601,402
U.S. Higher Education Segment | Tuition, net of discounts, grants and scholarships
Disaggregation of Revenue [Line Items]
Consolidated revenue	198,873	192,850	616,175	575,725
U.S. Higher Education Segment | Other
Disaggregation of Revenue [Line Items]
Consolidated revenue	8,836	8,978	27,383	25,677
Australia/New Zealand Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	71,948	63,264	190,453	170,239
Australia/New Zealand Segment | Tuition, net of discounts, grants and scholarships
Disaggregation of Revenue [Line Items]
Consolidated revenue	69,973	61,667	184,611	165,855
Australia/New Zealand Segment | Other
Disaggregation of Revenue [Line Items]
Consolidated revenue	1,975	1,597	5,842	4,384
Education Technology Services Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 26,301	$ 20,844	$ 74,463	$ 58,581