CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUE	$ 80,464	$ 62,470	$ 158,461	$ 132,511
COSTS AND EXPENSES:
Educational services and facilities	33,694	26,245	66,037	56,482
Selling, general and administrative	43,318	35,162	82,951	76,310
(Gain) loss on disposition of assets	0	(97)	1	(96)
Total costs & expenses	77,012	61,310	148,989	132,696
OPERATING INCOME (LOSS)	3,452	1,160	9,472	(185)
OTHER:
Interest expense	(297)	(327)	(582)	(682)
INCOME (LOSS) BEFORE INCOME TAXES	3,155	833	8,890	(867)
PROVISION FOR INCOME TAXES	729	50	1,975	100
NET INCOME (LOSS)	2,426	783	6,915	(967)
PREFERRED STOCK DIVIDENDS	304	0	608	0
INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS	$ 2,122	$ 783	$ 6,307	$ (967)
Basic
Net income (loss) per common share (in dollars per share)	$ 0.06	$ 0.02	$ 0.19	$ (0.06)
Diluted
Net income (loss) per common share (in dollars per share)	$ 0.06	$ 0.02	$ 0.19	$ (0.06)
Weighted average number of common shares outstanding:
Basic (in shares)	25,105,238	24,741,331	24,996,583	24,669,838
Diluted (in shares)	25,105,238	24,741,331	24,996,583	24,669,838