Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
REVENUE:
Total revenue		$ 167,684	$ 175,539	$ 350,643	$ 359,177
OPERATING EXPENSES:
Educational services and facilities		27,269	28,532	55,357	57,506
General and administrative		101,332	107,132	207,628	217,177
Depreciation and amortization		4,909	3,913	9,791	7,915
Asset impairment		228		228
Total operating expenses		133,738	139,577	273,004	282,598
Operating income		33,946	35,962	77,639	76,579
OTHER INCOME:
Interest income		1,094	322	1,427	681
Interest expense		(99)	(280)	(202)	(389)
Miscellaneous (expense) income		(226)	(36)	(315)	95
Total other income		769	6	910	387
PRETAX INCOME		34,715	35,968	78,549	76,966
Provision for income taxes		8,948	9,319	20,704	19,564
NET INCOME		$ 25,767	$ 26,649	$ 57,845	$ 57,402
NET INCOME PER SHARE - BASIC:		$ 0.38	$ 0.38	$ 0.84	$ 0.82
NET INCOME PER SHARE - DILUTED:		$ 0.37	$ 0.37	$ 0.83	$ 0.80
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic		68,341	70,299	68,542	70,224
Diluted		69,182	71,679	69,376	71,616
Tuition and Fees [Member]
REVENUE:
Total revenue		$ 165,896	$ 174,804	$ 347,223	$ 357,635
Other [Member]
REVENUE:
Total revenue	[1]	$ 1,788	$ 735	$ 3,420	$ 1,542

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