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Revenue Recognition - Schedule of Disaggregation of Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 285,936	$ 263,123	$ 830,222	$ 795,542
U.S. Higher Education Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	201,828	185,499	601,402	571,291
U.S. Higher Education Segment | Tuition, net of discounts, grants and scholarships
Disaggregation of Revenue [Line Items]
Consolidated revenue	192,850	177,678	575,725	546,407
U.S. Higher Education Segment | Other
Disaggregation of Revenue [Line Items]
Consolidated revenue	8,978	7,821	25,677	24,884
Australia/New Zealand Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	63,264	61,177	170,239	177,232
Australia/New Zealand Segment | Tuition, net of discounts, grants and scholarships
Disaggregation of Revenue [Line Items]
Consolidated revenue	61,667	60,238	165,855	173,621
Australia/New Zealand Segment | Other
Disaggregation of Revenue [Line Items]
Consolidated revenue	1,597	939	4,384	3,611
Education Technology Services Segment
Disaggregation of Revenue [Line Items]
Consolidated revenue	$ 20,844	$ 16,447	$ 58,581	$ 47,019

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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