GOODWILL AND LONG-LIVED ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
GOODWILL AND LONG-LIVED ASSETS [Abstract]
Long lived asset impairment	$ 0		$ 0
Changes in carrying amount of goodwill [Abstract]
Gross Goodwill Balance	115,872				$ 115,872
Accumulated Impairment Losses	(93,665)				(93,665)
Net Goodwill Balance	22,207				22,207
Adjustments			0
Finite-Lived Intangible Assets [Line Items]
Amortization	100	$ 100	100	$ 100
Net carrying amount at end of period	95		95
Intangible Assets (Excluding Goodwill) [Abstract]
Gross carrying amount, Total			1,922
Adjustments			0
Gross carrying amount, Total	1,922		1,922
Accumulated amortization, Total			733
Amortization			32
Accumulated amortization, Total	765		765
Net carrying amount	1,157
Amortization of intangible assets	100	$ 100	100	$ 100
Estimated future amortization expense [Abstract]
Remainder of 2015	33
2016	21
2017	20
2018	20
2019	1
Thereafter	0
Total	95		95
Accreditation [Member]
Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount, beginning balance			1,062
Adjustments			0
Gross carrying amount, ending balance	1,062		1,062
Accumulated amortization, beginning balance			0
Amortization			0
Accumulated amortization, ending balance	0		0
Net carrying amount	1,062		1,062		$ 1,062
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, beginning balance			310
Adjustments			0
Gross carrying amount, ending balance	310		310
Accumulated amortization, beginning balance			264
Amortization			22
Accumulated amortization, ending balance	286		286
Net carrying amount at end of period	24		$ 24
Weighted average amortization period			7 years
Intangible Assets (Excluding Goodwill) [Abstract]
Amortization of intangible assets			$ 22
Estimated future amortization expense [Abstract]
Total	24		24
Curriculum [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, beginning balance			550
Adjustments			0
Gross carrying amount, ending balance	550		550
Accumulated amortization, beginning balance			469
Amortization			10
Accumulated amortization, ending balance	479		479
Net carrying amount at end of period	71		$ 71
Weighted average amortization period			10 years
Intangible Assets (Excluding Goodwill) [Abstract]
Amortization of intangible assets			$ 10
Estimated future amortization expense [Abstract]
Total	$ 71		$ 71