Revenue Recognition - Summary of Disaggregation of Revenue by Major Source (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Total revenue		$ 166,740	$ 186,564	$ 335,004	$ 382,162
Tuition, Net [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	157,944	176,000	317,213	360,643
Technology and Other Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		7,460	8,520	15,189	17,196
Tuition and Fees, Net [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		165,404	184,520	332,402	377,839
Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[2]	1,336	2,044	2,602	4,323
University Group [Member] | CTU [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		112,828	119,292	226,397	243,784
University Group [Member] | AIUS [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		53,722	67,062	108,227	137,902
University Group [Member] | Tuition, Net [Member] | CTU [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	106,978	112,864	214,418	230,862
University Group [Member] | Tuition, Net [Member] | AIUS [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	50,966	63,136	102,795	129,781
University Group [Member] | Technology and Other Fees [Member] | CTU [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		4,998	5,420	10,338	10,843
University Group [Member] | Technology and Other Fees [Member] | AIUS [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		2,462	3,100	4,851	6,353
University Group [Member] | Tuition and Fees, Net [Member] | CTU [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		111,976	118,284	224,756	241,705
University Group [Member] | Tuition and Fees, Net [Member] | AIUS [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		53,428	66,236	107,646	136,134
University Group [Member] | Other [Member] | CTU [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[2]	852	1,008	1,641	2,079
University Group [Member] | Other [Member] | AIUS [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[2]	294	826	581	1,768
Corporate and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue		190	210	380	476
Corporate and Other [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	[2]	$ 190	$ 210	$ 380	$ 476

[1] Tuition includes revenue earned for all degree-granting programs as well as revenue earned for non-degree and professional development programs.

[2] Other revenue primarily includes contract training revenue and miscellaneous non-student related revenue.