Segment Reporting - Significant Expense Category by Reporting Segment Expenses (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total operating expenses		$ 161,277	$ 121,986
CTU [Member] | Academics and Student Related [Member]
Segment Reporting Information [Line Items]
Total operating expenses		15,972	17,241
CTU [Member] | Advertising and Marketing [Member]
Segment Reporting Information [Line Items]
Total operating expenses		13,523	13,210
CTU [Member] | Admissions [Member]
Segment Reporting Information [Line Items]
Total operating expenses		12,532	12,178
CTU [Member] | Administrative [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[1]	22,814	21,090
CTU [Member] | Bad Debt [Member]
Segment Reporting Information [Line Items]
Total operating expenses		5,874	3,028
CTU [Member] | Depreciation and Amortization [Member]
Segment Reporting Information [Line Items]
Total operating expenses		2,136	2,090
CTU [Member] | All Other Expenses [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[2]	631	2,576
AIUS [Member] | Academics and Student Related [Member]
Segment Reporting Information [Line Items]
Total operating expenses		10,300	9,950
AIUS [Member] | Advertising and Marketing [Member]
Segment Reporting Information [Line Items]
Total operating expenses		10,456	11,029
AIUS [Member] | Admissions [Member]
Segment Reporting Information [Line Items]
Total operating expenses		8,547	8,712
AIUS [Member] | Administrative [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[1]	9,441	9,958
AIUS [Member] | Bad Debt [Member]
Segment Reporting Information [Line Items]
Total operating expenses		1,624	3,528
AIUS [Member] | Depreciation and Amortization [Member]
Segment Reporting Information [Line Items]
Total operating expenses		719	845
AIUS [Member] | All Other Expenses [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[2]	1,088	$ 1,197
USAHS [Member] | Academics and Student Related [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[3]	15,416
USAHS [Member] | Advertising and Marketing [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[3]	3,978
USAHS [Member] | Admissions [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[3]	1,387
USAHS [Member] | Administrative [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[1],[3]	5,148
USAHS [Member] | Bad Debt [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[3]	61
USAHS [Member] | Depreciation and Amortization [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[3]	8,870
USAHS [Member] | All Other Expenses [Member]
Segment Reporting Information [Line Items]
Total operating expenses	[2],[3]	$ 4,653

[1] Administrative expense includes allocations from Corporate and Other.

[2] All other expenses primarily include occupancy and asset impairment.

[3] USAHS includes financial information starting from the acquisition date on December 2, 2024.