LONG-TERM DEBT AND LEASE OBLIGATIONS (Details)		3 Months Ended
		Mar. 31, 2017 USD ($) Property	Dec. 31, 2016 USD ($)
Long-term debt and lease obligations [Abstract]
Long term debt and capital lease obligations		$ 29,156,000	$ 44,267,000
Less current maturities		(5,000,000)	(11,713,000)
Long-term debt and lease obligations		24,156,000	32,554,000
Scheduled maturities of long-term debt and lease obligations [Abstract]
2017		5,000,000
2018		0
2019		0
2020		25,000,000
Long term debt and capital lease obligations		30,000,000
Credit Agreement [Member]
Long-term debt and lease obligations [Abstract]
Long-term line of credit	[1]	$ 29,156,000	0
Term of credit facility		38 months
Expiration date of credit facility		May 31, 2020
Number of properties owned | Property		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
Deferred finance fee, offset		800,000
Letter of Credit [Member]
Long-term debt and lease obligations [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		$ 6,200,000	6,200,000
Maximum availability under the facility previously provided		9,500,000
Term Loan [Member]
Long-term debt and lease obligations [Abstract]
Long-term line of credit	[1]	0	44,267,000
Revolving Credit Facility 2 [Member]
Long-term debt and lease obligations [Abstract]
Line of credit facility, maximum borrowing capacity		25,000,000
Line of credit facility, amount outstanding		0
Prior Credit Agreement [Member]
Long-term debt and lease obligations [Abstract]
Long-term line of credit			44,300,000
Termination premium incurred		1,800,000
Deferred finance fee, offset			$ 2,300,000
Credit Facility 1 [Member]
Long-term debt and lease obligations [Abstract]
Line of credit facility, maximum borrowing capacity		30,000,000
Outstanding principal balance after released from the pledged account		25,000,000
Line of credit facility, amount outstanding		30,000,000
Maximum [Member] | Credit Agreement [Member]
Long-term debt and lease obligations [Abstract]
Line of credit facility, maximum borrowing capacity		55,000,000
Tranche A [Member] | Credit Agreement [Member]
Long-term debt and lease obligations [Abstract]
Long-term line of credit		25,000,000
Tranche A [Member] | Revolving Credit Facility 1 [Member]
Long-term debt and lease obligations [Abstract]
Line of credit facility, maximum borrowing capacity		25,000,000
Amount borrowed for working capital		$ 1,800,000
Interest rate on credit facility		6.00%
Tranche A [Member] | Revolving Credit Facility 1 [Member] | Prime Rate [Member]
Long-term debt and lease obligations [Abstract]
Interest rate on credit facility		2.50%
Tranche B [Member] | Credit Agreement [Member]
Long-term debt and lease obligations [Abstract]
Long-term line of credit		$ 5,000,000
Tranche B [Member] | Non-Revolving Credit Facility [Member]
Long-term debt and lease obligations [Abstract]
Line of credit facility, maximum borrowing capacity		5,000,000
Outstanding principal balance after released from the pledged account		$ 0
Tranche B [Member] | Non-Revolving Credit Facility [Member] | Prime Rate [Member]
Long-term debt and lease obligations [Abstract]
Interest rate on credit facility		3.50%
Tranche B [Member] | Revolving Credit Facility 2 [Member] | Prime Rate [Member]
Long-term debt and lease obligations [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" 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") from a lender group led by HPF Service, LLC, 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, 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 disbursements of such amounts, the Company retained approximately $1.832 million of the borrowed amount for working capital purposes. Also, at closing, $5 million was drawn under Tranche B and, 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 upon completion of environmental studies undertaken at such properties. Pursuant to the terms of the Credit Agreement, funds will be released from the Pledged Account upon request by the Company to reimburse the Company for costs incurred for environmental remediation, if required. Upon the completion of any such environmental remediation or upon determination that no environmental remediation is necessary, funds remaining in the Pledged Account will be released from the Pledged Account and applied to the outstanding principal balance of Tranche B and availability under Tranche B will be permanently reduced to zero and, accordingly, the maximum principal amount of Facility 1 will be 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 must be 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 will be payable monthly in arrears. Revolving loans under Tranche A of Facility 1 will 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 will require 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 shall be payable in quarterly installments in arrears. Letters of credit totaling $6,186,906 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. Under the terms of the Credit Agreement, the Bank receives 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 with the Bank 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. Under the terms of the Credit Agreement, in the event that the Company terminates the Credit Facility or refinances with another lender within 18 months of closing, the Company shall be 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 December 31, 2018 and require a minimum adjusted EBITDA and a minimum tangible net worth, as well as events of default customary for facilities of this type. In connection with the Credit Agreement, the Company paid the Bank 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. As of March 31, 2017, the Company had $30 million outstanding under the Credit Facility; 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; offset by $2.3 million of deferred finance fees which were written-off. As of March 31, 2017 and December 31, 2016 there were letters of credit in the aggregate principal amount of $6.1 million outstanding, respectively.