LONG-TERM DEBT (Details)			12 Months Ended
	Feb. 23, 2018 USD ($)	Aug. 14, 2017 USD ($)	Dec. 31, 2017 USD ($) Property	Nov. 29, 2017 USD ($)	Apr. 28, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Long term debt and lease obligations [Abstract]
Deferred financing fees			$ (807,000)				$ (2,310,000)
Long term debt and capital lease obligations			52,593,000				41,957,000
Less current maturities			0				(11,713,000)
Long-term debt and lease obligations			52,593,000				30,244,000
Line of credit facility, maximum borrowing capacity				$ 65,000,000
Scheduled maturities of long-term debt [Abstract]
2018			0
2019			0
2020			53,400,000
2021			0
2022			0
Thereafter			0
Long term debt			$ 53,400,000
Subsequent Event [Member]
Long term debt and lease obligations [Abstract]
Modification fees paid to bank	$ 50,000
West Palm Beach Property [Member]
Long term debt and lease obligations [Abstract]
Short term loan					$ 8,000,000
Number of properties sold | Property			2
Purchase price		$ 15,800,000	$ 8,000,000
Credit Agreement [Member]
Long term debt and lease obligations [Abstract]
Long-term line of credit			$ 53,400,000				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
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			$ 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
Revolving Credit Facility 3 [Member]
Long term debt and lease obligations [Abstract]
Line of credit facility, maximum borrowing capacity				$ 15,000,000
Expiration date of credit facility			May 31, 2019
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
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
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] | Subsequent Event [Member]
Long term debt and lease obligations [Abstract]
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 A [Member] | Revolving Credit Facility 1 [Member] | Prime Rate [Member] | Subsequent Event [Member]
Long term debt and lease obligations [Abstract]
Interest rate on credit facility	2.85%
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%
Tranche B [Member] | Revolving Credit Facility 3 [Member] | Prime Rate [Member]
Long term debt and lease obligations [Abstract]
Interest rate on credit facility			3.50%