UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues	$ 273,564	$ 299,173	$ 532,419	$ 589,509
Costs and expenses:
Instructional and support costs	147,368	152,938	291,992	305,743
General and administration	96,722	93,395	191,506	180,240
Amortization of intangible assets	3,694	19,392	7,432	38,799
Merger and integration costs	254	1,937	664	2,949
Restructuring costs	3,661	4,811	5,519	23,078
Total costs and expenses	251,699	272,473	497,113	550,809
Income from operations	21,865	26,700	35,306	38,700
Other income (expense)	300	757	(871)	2,924
Income before income taxes	22,165	27,457	34,435	41,624
Provision for income taxes	6,945	7,481	12,186	12,071
Net income	$ 15,220	$ 19,976	$ 22,249	$ 29,553
Earnings per share:
Basic (in dollars per share)	$ 0.64	$ 0.83	$ 0.93	$ 1.23
Diluted (in dollars per share)	$ 0.63	$ 0.83	$ 0.92	$ 1.22
Weighted average shares outstanding:
Basic (in shares)	23,796	23,975	23,872	23,974
Diluted (in shares)	24,063	24,126	24,089	24,139