LONG-TERM DEBT (Details)			3 Months Ended		9 Months Ended
		Aug. 14, 2017 USD ($)	Sep. 30, 2017 USD ($) Property	Mar. 31, 2017 USD ($)	Sep. 30, 2017 USD ($) Property	Apr. 28, 2017 USD ($)	Dec. 31, 2016 USD ($)
Long-term debt [Abstract]
Deferred Financing Fees			$ (779,000)		$ (779,000)		$ (2,310,000)
Long term debt			16,721,000		16,721,000		41,957,000
Less current maturities			0		0		(11,713,000)
Long-term debt, excluding current maturities			16,721,000		16,721,000		30,244,000
Scheduled maturities of long-term debt [Abstract]
2017			0		0
2018			0		0
2019			0		0
2020			17,500,000		17,500,000
Total maturities of long term debt			$ 17,500,000		$ 17,500,000
West Palm Beach Property [Member]
Long-term debt [Abstract]
Number of properties owned | Property			3		3
Short term loan						$ 8,000,000
Number of properties agreed to be sold | Property			2
Purchase price		$ 15,800,000	$ 8,000,000
Credit Agreement [Member]
Long-term debt [Abstract]
Long-term line of credit	[1]		$ 17,500,000		$ 17,500,000		0
Term of credit facility				38 months
Expiration date of credit facility				May 31, 2020
Number of properties owned | Property			4		4
Percentage of letters of credit margin against available funds in cash collateral					100.00%
Percentage of unused facility fee payable quarterly					0.50%
Minimum quarterly average aggregate balances to be maintained			$ 5,000,000
Bank fees if minimum quarterly average aggregate balances is not maintained					$ 12,500
Closing term to terminate the credit facility					18 months
Breakage fee					$ 500,000
Bank origination fee			250,000		$ 250,000
Letter of Credit [Member]
Long-term debt [Abstract]
Line of credit facility, maximum borrowing capacity				$ 10,000,000
Expiration date of credit facility					Apr. 01, 2017
Percentage of letter of credit fee, quarterly installment					1.75%
Letters of credit outstanding			7,200,000		$ 7,200,000		6,200,000
Maximum availability under the facility previously provided			9,500,000		9,500,000
Term Loan [Member]
Long-term debt [Abstract]
Long-term line of credit	[1]		0		0		44,267,000
Revolving Credit Facility 2 [Member]
Long-term debt [Abstract]
Line of credit facility, maximum borrowing capacity				25,000,000
Line of credit facility, amount outstanding			0		0
Prior Credit Agreement [Member]
Long-term debt [Abstract]
Long-term line of credit							$ 44,300,000
Termination premium incurred					1,800,000
Credit Facility 1 [Member]
Long-term debt [Abstract]
Line of credit facility, maximum borrowing capacity				30,000,000
Outstanding principal balance after released from the pledged account			25,000,000		25,000,000
Line of credit facility, amount outstanding			17,500,000		$ 17,500,000
Minimum [Member] | Prime Rate [Member]
Long-term debt [Abstract]
Interest rate on credit facility					2.50%
Maximum [Member] | Prime Rate [Member]
Long-term debt [Abstract]
Interest rate on credit facility					6.00%
Maximum [Member] | Credit Agreement [Member]
Long-term debt [Abstract]
Line of credit facility, maximum borrowing capacity				55,000,000
Tranche A [Member] | Credit Agreement [Member]
Long-term debt [Abstract]
Long-term line of credit			25,000,000		$ 25,000,000
Tranche A [Member] | Revolving Credit Facility 1 [Member]
Long-term debt [Abstract]
Line of credit facility, maximum borrowing capacity				25,000,000
Amount borrowed for working capital			1,800,000		$ 1,800,000
Interest rate on credit facility					6.00%
Tranche A [Member] | Revolving Credit Facility 1 [Member] | Prime Rate [Member]
Long-term debt [Abstract]
Interest rate on credit facility					2.50%
Tranche B [Member] | Credit Agreement [Member]
Long-term debt [Abstract]
Long-term line of credit			5,000,000		$ 5,000,000
Tranche B [Member] | Non-Revolving Credit Facility [Member]
Long-term debt [Abstract]
Line of credit facility, maximum borrowing capacity				$ 5,000,000
Outstanding principal balance after released from the pledged account			$ 0		$ 0
Tranche B [Member] | Non-Revolving Credit Facility [Member] | Prime Rate [Member]
Long-term debt [Abstract]
Interest rate on credit facility					3.50%
Tranche B [Member] | Revolving Credit Facility 2 [Member] | Prime Rate [Member]
Long-term debt [Abstract]
Interest rate on credit facility					3.50%

[1] On March 31, 2017, the Company entered into a secured revolving credit agreement (the "Credit Agreement") with Sterling National Bank (the "Bank") pursuant to which the Company obtained a credit facility in the aggregate principal amount of up to $55 million (the "Credit Facility"). The Credit Facility consists of (a) a $30 million loan facility ("Facility 1"), which is comprised of a $25 million revolving loan designated as "Tranche A" and a $5 million non-revolving loan designated as "Tranche B," which Tranche B was repaid during the quarter ended June 30, 2017, and (b) a $25 million revolving loan facility ("Facility 2"), which includes a sublimit amount for letters of credit of $10 million. The Credit Facility replaces a term loan facility (the "Prior Credit Facility") which was repaid and terminated concurrently with the effectiveness of the Credit Facility. The term of the Credit Facility is 38 months, maturing on May 31, 2020. The Credit Facility is secured by a first priority lien in favor of the Bank on substantially all of the personal property owned by the Company as well as mortgages on four parcels of real property owned by the Company in Connecticut, Colorado, Tennessee and Texas at which four of the Company's schools are located. At the closing of the Credit Facility, the Company drew $25 million under Tranche A of Facility 1, which, pursuant to the terms of the Credit Agreement, was used to repay the Prior Credit Facility and to pay transaction costs associated with closing the Credit Facility. After the disbursement of such amounts, the Company retained approximately $1.8 million of the borrowed amount for working capital purposes. Also, at closing, $5 million was drawn under Tranche B, which, pursuant to the terms of the Credit Agreement, was deposited into an interest-bearing pledged account (the "Pledged Account") in the name of the Company maintained at the Bank in order to secure payment obligations of the Company with respect to the costs of remediation of any environmental contamination discovered at certain of the mortgaged properties based upon environmental studies undertaken at such properties. During the quarter ended June 30, 2017, the environmental studies were completed and revealed no environmental issues existing at the properties and accordingly, pursuant to the terms of the Credit Agreement, the $5 million in the Pledged Account was released and used to repay the non-revolving loan outstanding under Tranche B. Upon the repayment of Tranche B, the maximum principal amount of Facility 1 was permanently reduced to $25 million. Pursuant to the terms of the Credit Agreement, all draws under Facility 2 for letters of credit or revolving loans are secured by cash collateral in an amount equal to 100% of the aggregate stated amount of the letters of credit issued and revolving loans outstanding through draws from Facility 1 or other available cash of the Company. Accrued interest on each revolving loan is payable monthly in arrears. Revolving loans under Tranche A of Facility 1 bear interest at a rate per annum equal to the greater of (x) the Bank's prime rate plus 2.50% and (y) 6.00%. The amount borrowed under Tranche B of Facility 1 and revolving loans under Facility 2 will bear interest at a rate per annum equal to the greater of (x) the Bank's prime rate and (y) 3.50%. Each issuance of a letter of credit under Facility 2 requires the payment of a letter of credit fee to the Bank equal to a rate per annum of 1.75% on the daily amount available to be drawn under the letter of credit, which fee is payable in quarterly installments in arrears. Letters of credit totaling $7.2 million that were outstanding under a $9.5 million letter of credit facility previously provided to the Company by the Bank, which letter of credit facility was set to mature on April 1, 2017, are treated as letters of credit under Facility 2. The terms of the Credit Agreement provide that the Bank be paid an unused facility fee on the average daily unused balance of Facility 1 at a rate per annum equal to 0.50%, which fee is payable quarterly in arrears. In addition, the Company is required to maintain, on deposit in one or more non-interest bearing accounts, a minimum of $5 million in quarterly average aggregate balances. If in any quarter the required average aggregate account balance is not maintained, the Company is required to pay the Bank a fee of $12,500 for that quarter and, in the event that the Company terminates the Credit Facility or refinances with another lender within 18 months of closing, the Company is required to pay the Bank a breakage fee of $500,000. In addition to the foregoing, the Credit Agreement contains customary representations, warranties and affirmative and negative covenants, including financial covenants that restrict capital expenditures, prohibit the incurrence of a net loss commencing on December 31, 2018 and require a minimum adjusted EBITDA and a minimum tangible net worth which is an annual covenant, as well as events of default customary for facilities of this type. As of September 30, 2017, the Company is in compliance with all covenants. In connection with the Credit Agreement, the Company paid an origination fee in the amount of $250,000 and other fees and reimbursements that are customary for facilities of this type. The Company incurred an early termination premium of approximately $1.8 million in connection with the termination of the Prior Credit Facility. On April 28, 2017, the Company entered into an additional secured credit agreement with the Bank, pursuant to which the Company obtained a short term loan in the principal amount of $8 million, the proceeds of which were used for working capital and general corporate purposes. The loan, which had an interest rate per annum equal to the greater of the Bank's prime rate plus 2.50% or 6.00%, was secured by real property assets located in West Palm Beach, Florida at which schools operated by the Company were located and matured upon the earlier of October 1, 2017 and the date of the sale of the West Palm Beach, Florida property. The Company sold two of three properties located in West Palm Beach, Florida in the third quarter of 2017 and concurrently repaid the $8 million. As of September 30, 2017, the Company had $17.5 million outstanding under the Credit Facility which was offset by $0.8 million of deferred finance fees. As of December 31, 2016, the Company had $44.3 million outstanding under the Prior Credit Facility which was offset by $2.3 million of deferred finance fees, which were written-off. As of September 30, 2017 and December 31, 2016, there were letters of credit in the aggregate principal amount of $7.2 million and $6.2 million outstanding, respectively.