Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jun. 30, 2024 USD ($) item	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) item segment	Jun. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Summary Of Significant Accounting Policies
Insurance receivable						$ 25,500
Investments		$ 100,498		$ 100,498			$ 98,031
Other assets		$ 2,209		$ 2,209			1,641
Number of operating segments | segment				1
Number of reporting units | segment				1
Number of university partners | item		22		22
Goodwill		$ 160,766		$ 160,766			160,766
Unbilled revenue		10,055		10,055			188
Amounts written off				0
Allowance for doubtful accounts		0		0
Stockholders equity		759,195	$ 645,425	759,195	$ 645,425	$ 759,447	718,014	$ 659,250	$ 637,619
Income tax expense		11,951	$ 9,052	32,146	$ 26,099
Cash in excess of FDIC insured limits		$ 240,317		$ 240,317			145,474
Revenue Benchmark | Customer Concentration Risk | Grand Canyon University
Summary Of Significant Accounting Policies
Concentration risk percentage				88.40%	87.20%
Computer Software
Summary Of Significant Accounting Policies
Estimated average useful life		3 years		3 years
Capitalized Content Development
Summary Of Significant Accounting Policies
Estimated average useful life		4 years		4 years
Other assets		$ 728		$ 728			$ 746
University partner relationships
Summary Of Significant Accounting Policies
Estimated average useful life		25 years		25 years
Minimum
Summary Of Significant Accounting Policies
Initial contract terms of service agreements				7 years
Maximum
Summary Of Significant Accounting Policies
Initial contract terms of service agreements				15 years
Master Services Agreement | Grand Canyon University
Summary Of Significant Accounting Policies
Percentage of tuition and fee revenue used for closing of purchase agreement	60.00%