SEGMENTS (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) Campus	Mar. 31, 2023 USD ($)	Dec. 31, 2022 Segment	Dec. 31, 2023 USD ($)
SEGMENTS [Abstract]
Number of reportable operating segments | Segment			2
Summary financial information by reporting segment [Abstract]
Number of campuses | Campus	22
Revenues	$ 103,366	$ 87,284
Percentage of Total Revenue	100.00%	100.00%
Operating Income (Loss)	$ (458)	$ (1,116)
Total Assets	355,163			$ 345,249
Campus Operations [Member]
Summary financial information by reporting segment [Abstract]
Revenues	$ 103,366	86,352
Transitional [Member]
Summary financial information by reporting segment [Abstract]
Number of campuses | Campus	0
Reportable Segments [Member] | Campus Operations [Member]
Summary financial information by reporting segment [Abstract]
Revenues	$ 103,366	$ 86,352
Percentage of Total Revenue	100.00%	98.90%
Operating Income (Loss)	$ 12,324	$ 10,109
Total Assets	249,738			234,940
Reportable Segments [Member] | Transitional [Member]
Summary financial information by reporting segment [Abstract]
Revenues	$ 0	$ 932
Percentage of Total Revenue	0.00%	1.10%
Operating Income (Loss)	$ 0	$ (197)
Total Assets	0			262
Corporate [Member]
Summary financial information by reporting segment [Abstract]
Revenues	$ 0	$ 0
Percentage of Total Revenue	0.00%	0.00%
Operating Income (Loss)	$ (12,782)	$ (11,028)
Total Assets	$ 105,425			$ 110,047