GOODWILL AND OTHER INTANGIBLES (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014	Sep. 30, 2014
GOODWILL AND OTHER INTANGIBLES [Abstract]
Goodwill held for sale					$ 0	[1]	$ 8,759	[1]	$ 1,300	$ 38,800
Changes in Carrying Amount of Goodwill [Abstract]
Gross Goodwill Balance					108,417		108,417		115,872
Accumulated Impairment Losses					(93,881)		(93,881)		(93,665)
Net Goodwill Balance					14,536		14,536		22,207
Asset held for sale	[2]		$ (7,455)
Goodwill impairment			(216)
Adjustments		$ 0
Finite-Lived Intangible Assets [Line Items]
Additions		0
Assets held for sale	[3]		(1,454)
Amortization		100	100	$ 200
Assets held for sale	[3]		(378)
Net carrying amount at end of the period		32
Intangible Assets (Excluding Goodwill) [Abstract]
Gross carrying amount, Total		470	1,924
Gross carrying amount, Total		470	470	1,924
Accumulated amortization, Total		420	733
Amortization		18	65
Accumulated amortization, Total		438	420	733
Net carrying amount					32		50
Amortization of intangible assets		100	100	200
Estimated future amortization expense [Abstract]
2017					16
2018					16
Total		32			32
Accreditation [Member]
Indefinite-lived Intangible Assets [Line Items]
Gross carrying amount, beginning balance		0	1,064
Additions		0
Assets held for sale	[3]		(1,064)
Gross carrying amount, ending balance		0	0	1,064
Accumulated amortization, beginning balance		0	0
Amortization		0	0
Assets held for sale	[3]		0
Accumulated amortization, ending balance		0	0	0
Net carrying amount at end of the period		0	0	1,064	0		0		$ 1,064
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, beginning balance		310	310
Additions		0
Assets held for sale	[3]		0
Gross carrying amount, ending balance		310	310	310
Accumulated amortization, beginning balance		308	264
Amortization		2	44
Assets held for sale	[3]		0
Accumulated amortization, ending balance		310	308	264
Net carrying amount at end of the period		$ 0	$ 2
Weighted average amortization period		7 years	7 years
Intangible Assets (Excluding Goodwill) [Abstract]
Amortization of intangible assets		$ 2	$ 44
Estimated future amortization expense [Abstract]
Total		0	2		0		2
Curriculum [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, beginning balance		160	550
Additions		0
Assets held for sale	[3]		(390)
Gross carrying amount, ending balance		160	160	550
Accumulated amortization, beginning balance		112	469
Amortization		16	21
Assets held for sale	[3]		(378)
Accumulated amortization, ending balance		128	112	$ 469
Net carrying amount at end of the period		$ 32	$ 48
Weighted average amortization period		10 years	10 years
Intangible Assets (Excluding Goodwill) [Abstract]
Amortization of intangible assets		$ 16	$ 21
Estimated future amortization expense [Abstract]
Total		$ 32	$ 48		$ 32		$ 48

[1] Amount is reduced by an $8.8 million impairment charge in 2016 related to goodwill.

[2] Amount consists of $1.3 million of goodwill held for sale as of December 31, 2014 offset by $8.8 million of goodwill as of December 31, 2015. Refer to Note 6 for more information on assets held for sale.

[3] Refer to Note 6 for more information on assets held for sale.