UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenues	$ 287,680	$ 273,564	$ 544,286	$ 532,419
Costs and expenses:
Instructional and support costs	161,479	147,368	314,417	291,992
General and administration	99,003	96,722	194,468	191,506
Amortization of intangible assets	3,450	3,694	6,982	7,432
Merger and integration costs	580	254	1,005	664
Restructuring costs	6,351	3,661	11,946	5,519
Total costs and expenses	270,863	251,699	528,818	497,113
Income from operations	16,817	21,865	15,468	35,306
Other income (expense)	3,171	300	3,569	(871)
Income before income taxes	19,988	22,165	19,037	34,435
Provision for income taxes	5,757	6,945	6,834	12,186
Net income	$ 14,231	$ 15,220	$ 12,203	$ 22,249
Earnings per share:
Basic (in dollars per share)	$ 0.61	$ 0.64	$ 0.52	$ 0.93
Diluted (in dollars per share)	$ 0.59	$ 0.63	$ 0.51	$ 0.92
Weighted average shares outstanding:
Basic (in shares)	23,450	23,796	23,440	23,872
Diluted (in shares)	23,964	24,063	23,993	24,089