CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUE	$ 293,095	$ 273,342
COSTS AND EXPENSES:
Educational services and facilities	122,196	123,495
Selling, general and administrative	156,199	145,176
Gain on sale of assets	(81)	(567)
Total costs and expenses	278,314	268,104
OPERATING INCOME	14,781	5,238
OTHER:
Interest income	0	8
Interest expense	(1,275)	(2,963)
INCOME BEFORE INCOME TAXES	13,506	2,283
(BENEFIT) PROVISION FOR INCOME TAXES	(35,059)	268
NET INCOME	48,565	2,015
PREFERRED STOCK DIVIDENDS	1,378	0
INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 47,187	$ 2,015
Basic
Net income per share (in dollars per share)	$ 1.49	$ 0.08
Diluted
Net income per share (in dollars per share)	$ 1.49	$ 0.08
Weighted average number of common shares outstanding:
Basic (in shares)	24,748,496	24,554,033
Diluted (in shares)	24,748,496	24,554,033