CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUE	$ 89,059	$ 78,792	$ 247,520	$ 211,303
COSTS AND EXPENSES:
Educational services and facilities	38,105	34,251	104,143	90,733
Selling, general and administrative	45,209	40,700	128,159	117,011
Loss (gain) on disposition of assets	0	1	1	(96)
Total costs & expenses	83,314	74,952	232,303	207,648
OPERATING INCOME	5,745	3,840	15,217	3,655
OTHER:
Interest expense	(292)	(278)	(874)	(960)
INCOME BEFORE INCOME TAXES	5,453	3,562	14,343	2,695
PROVISION FOR INCOME TAXES	1,614	50	3,589	150
NET INCOME	3,839	3,512	10,754	2,545
PREFERRED STOCK DIVIDENDS	304	1,074	912	1,074
INCOME AVAILABLE TO COMMON SHAREHOLDERS	$ 3,535	$ 2,438	$ 9,842	$ 1,471
Basic
Net income per common share (in dollars per share)	$ 0.11	$ 0.08	$ 0.30	$ 0.05
Diluted
Net income per common share (in dollars per share)	$ 0.11	$ 0.08	$ 0.30	$ 0.05
Weighted average number of common shares outstanding:
Basic (in shares)	25,135,381	24,821,665	25,043,357	24,720,817
Diluted (in shares)	25,135,381	24,821,665	25,043,357	24,720,817