INVESTMENT IN AND RECEIVABLE FROM NEW MEADOWLANDS RACETRACK (Details) - USD ($)					9 Months Ended	12 Months Ended
	Feb. 07, 2017	Apr. 25, 2014	Nov. 19, 2013	Mar. 12, 2013	Jul. 03, 2021	Dec. 31, 2015	Oct. 03, 2020	Jul. 13, 2016
New Meadowlands Racetrack LLC
INVESTMENT IN NEW MEADOWLANDS RACETRACK (Details) [Line Items]
Payments to acquire businesses				$ 4,200,000
Ownership percentage			7.40%
Payments to acquire additional interest in subsidiaries	$ 222,000		$ 464,000			$ 222,000
Long-term investments	$ 5,108,000
Meadowlands Newmark LLC
INVESTMENT IN NEW MEADOWLANDS RACETRACK (Details) [Line Items]
Ownership percentage			11.60%	63.70%
Loans to related party		$ 1,500,000
Interest rate		3.00%
Loan maturity date		Jan. 31, 2024
Additional loan								$ 200,000
Principal and accrued interest					$ 1,807,000		$ 1,766,000
Ark Meadowlands LLC
INVESTMENT IN NEW MEADOWLANDS RACETRACK (Details) [Line Items]
Ownership percentage by parent					97.00%
Profit participation percentage					5.00%