UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenues	$ 321,471	$ 312,266	$ 625,061	$ 602,516
Costs and expenses:
Instructional and support costs	166,153	163,235	324,439	320,944
General and administration	106,775	105,112	210,371	201,807
Restructuring costs	2,783	1,995	4,697	(3,515)
Total costs and expenses	275,711	270,342	539,507	519,236
Income from operations	45,760	41,924	85,554	83,280
Other income (expense)	(315)	(123)	1,896	1,671
Income before income taxes	45,445	41,801	87,450	84,951
Provision for income taxes	13,114	11,903	25,375	25,351
Net income	$ 32,331	$ 29,898	$ 62,075	$ 59,600
Earnings per share:
Basic (in dollars per share)	$ 1.41	$ 1.28	$ 2.69	$ 2.55
Diluted (in dollars per share)	$ 1.37	$ 1.24	$ 2.61	$ 2.47
Weighted average shares outstanding:
Basic (in shares)	22,906	23,442	23,113	23,416
Diluted (in shares)	23,516	24,179	23,790	24,119