INVESTMENTS (Details) - USD ($) $ in Thousands			12 Months Ended
	Nov. 30, 2016	Apr. 10, 2015	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Long-term Debt.			$ 832,505	$ 855,156
MGM National Harbor Loan
Schedule of Investments [Line Items]
Long-term Debt.			0	57,889
MGM National Harbor [Member]
Schedule of Investments [Line Items]
Payments to Acquire Investments	$ 35,000	$ 5,000
Other Income			$ 7,700	$ 4,900