CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
REVENUE	$ 273,342	$ 263,200	$ 261,853
COSTS AND EXPENSES:
Educational services and facilities	123,495	125,373	129,413
Selling, general and administrative	145,176	141,244	138,779
(Gain) loss on sale of assets	(567)	537	(1,623)
Total costs and expenses	268,104	267,154	266,569
OPERATING INCOME (LOSS)	5,238	(3,954)	(4,716)
OTHER:
Interest income	8	31	56
Interest expense	(2,963)	(2,422)	(7,098)
INCOME (LOSS) BEFORE INCOME TAXES	2,283	(6,345)	(11,758)
PROVISION (BENEFIT) FOR INCOME TAXES	268	200	(274)
NET INCOME (LOSS)	$ 2,015	$ (6,545)	$ (11,484)
Basic
Earnings (loss) per share (in dollars per share)	$ 0.08	$ (0.27)	$ (0.48)
Diluted
Earnings (loss) per share (in dollars per share)	$ 0.08	$ (0.27)	$ (0.48)
Weighted average number of common shares outstanding:
Basic (in shares)	24,554,033	24,423,479	23,906,395
Diluted (in shares)	24,554,033	24,423,479	23,906,395