SEGMENT REPORTING - Financial Information by Reporting Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
SEGMENT REPORTING [Abstract]
REVENUE	$ 518,241	$ 440,064	$ 378,070
COSTS AND EXPENSES:
Instructional	98,460	90,566	85,311
Books and Tools	36,603	32,146	26,177
Facilities	50,098	46,791	44,647
Depreciation and amortization	20,228	12,256	6,140
Educational services and facilities	205,389	181,759	162,275
Sales and marketing	84,551	75,236	65,553
Student services	25,424	21,874	18,693
Provision for credit losses	58,085	56,578	41,637
Administrative	114,283	89,415	82,622
Depreciation and amortization	603	700	630
Selling, general and administrative	282,946	243,803	209,135
(Gain) loss on sale of assets	(406)	2,119	(30,918)
Gain on insurance proceeds	0	(2,794)	0
Impairment of goodwill and long-lived assets	0	0	4,220
Total costs & expenses	487,929	424,887	344,712
OPERATING INCOME	30,312	15,177	33,358
Campus Operations [Member]
SEGMENT REPORTING [Abstract]
REVENUE	518,241	432,966	367,233
Reportable Segments [Member] | Campus Operations [Member]
SEGMENT REPORTING [Abstract]
REVENUE	518,241	432,966	367,233
COSTS AND EXPENSES:
Instructional	98,460	88,207	82,228
Books and Tools	36,603	31,161	24,802
Facilities	50,098	45,842	42,475
Depreciation and amortization	20,228	12,200	6,030
Educational services and facilities	205,389	177,410	155,535
Sales and marketing	84,551	73,532	64,159
Student services	25,424	21,012	17,314
Provision for credit losses	58,050	55,600	39,978
Administrative	46,571	41,235	37,976
Depreciation and amortization	0	0	0
Selling, general and administrative	214,596	191,379	159,427
(Gain) loss on sale of assets	(442)	619	0
Gain on insurance proceeds	0	0	20
Impairment of goodwill and long-lived assets	0	0	4,220
Total costs & expenses	419,543	369,408	319,202
OPERATING INCOME	98,698	63,558	48,031
Reportable Segments [Member] | Transitional [Member]
SEGMENT REPORTING [Abstract]
REVENUE	0	7,098	10,837
COSTS AND EXPENSES:
Instructional	0	2,359	3,083
Books and Tools	0	985	1,375
Facilities	0	949	2,172
Depreciation and amortization	0	56	110
Educational services and facilities	0	4,349	6,740
Sales and marketing	0	1,704	1,394
Student services	0	862	1,379
Provision for credit losses	0	975	1,659
Administrative	0	1,236	2,030
Depreciation and amortization	0	0	0
Selling, general and administrative	0	4,777	6,462
(Gain) loss on sale of assets	0	11	1
Gain on insurance proceeds	0	0	0
Impairment of goodwill and long-lived assets	0	0	0
Total costs & expenses	0	9,137	13,203
OPERATING INCOME	0	(2,039)	(2,366)
Corporate [Member]
SEGMENT REPORTING [Abstract]
REVENUE	0	0	0
COSTS AND EXPENSES:
Instructional	0	0	0
Books and Tools	0	0	0
Facilities	0	0	0
Depreciation and amortization	0	0	0
Educational services and facilities	0	0	0
Sales and marketing	0	0	0
Student services	0	0	0
Provision for credit losses	35	3	0
Administrative	67,712	46,944	42,616
Depreciation and amortization	603	700	630
Selling, general and administrative	68,350	47,647	43,246
(Gain) loss on sale of assets	0	1,489	(30,939)
Gain on insurance proceeds	36	(2,794)	0
Impairment of goodwill and long-lived assets	0	0	0
Total costs & expenses	68,386	46,342	12,307
OPERATING INCOME	$ (68,386)	$ (46,342)	$ (12,307)