CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUE	$ 335,336	$ 293,095
COSTS AND EXPENSES:
Educational services and facilities	138,931	122,196
Selling, general and administrative	168,923	156,199
Gain on sale of assets	(22,479)	(81)
Impairment of long-lived assets	700	0
Total costs and expenses	286,075	278,314
OPERATING INCOME	49,261	14,781
OTHER:
Interest expense	(2,015)	(1,275)
INCOME BEFORE INCOME TAXES	47,246	13,506
PROVISION (BENEFIT) FOR INCOME TAXES	12,528	(35,059)
NET INCOME	34,718	48,565
PREFERRED STOCK DIVIDENDS	1,219	1,378
INCOME AVAILABLE TO COMMON SHAREHOLDERS	$ 33,499	$ 47,187
Basic
Net income per share (in dollars per share)	$ 1.04	$ 1.49
Diluted
Net income per share (in dollars per share)	$ 1.04	$ 1.49
Weighted average number of common shares outstanding:
Basic (in shares)	25,080,789	24,748,496
Diluted (in shares)	25,080,789	24,748,496