INVESTMENT IN REAL ESTATE LOANS - Additional Information (Details) $ in Thousands			3 Months Ended	12 Months Ended
	Dec. 31, 2018 USD ($) hotel	Jun. 29, 2018 USD ($)	Dec. 31, 2017 USD ($) Loan hotel	Dec. 31, 2018 USD ($) hotel	Dec. 31, 2017 USD ($) hotel	Apr. 30, 2017 USD ($) hotel
Financing Receivable, Impaired [Line Items]
Number of hotels | hotel	77			77
Purchase options related to real estate loans	$ 6,120		$ 6,078	$ 6,120	$ 6,078
Investment in real estate loans, net	30,700		$ 12,356	30,700	12,356
Mezzanine Loans
Financing Receivable, Impaired [Line Items]
Number of construction loans | Loan			3
Loans amount			$ 29,600		$ 29,600
Loans stated interest rate			8.00%
Number of hotels | hotel			3		3
Loans initial term			3 years
Loans funded	$ 29,600			$ 29,600
Interest in hotel upon completion to purchase	90.00%			90.00%
Period of time after initial option exercise to purchase remaining interests	5 years
Amortization of discount				$ 2,000	$ 300
Real estate loans
Financing Receivable, Impaired [Line Items]
Investment in real estate loans, net	$ 30,700		$ 12,356	30,700	12,356
2019	2,100			2,100
2020	26,300			26,300
2021	2,300			2,300
Other assets | Mezzanine Loans
Financing Receivable, Impaired [Line Items]
Purchase options related to real estate loans	6,100			6,100
Disposed of by Sale
Financing Receivable, Impaired [Line Items]
Number of hotels | hotel						23
Aggregate sale price	$ 107,250		$ 120,153	$ 107,250	$ 120,153	$ 325,100
Duluth, GA | Disposed of by Sale | Holiday Inn and Hilton Garden Inn
Financing Receivable, Impaired [Line Items]
Aggregate sale price		$ 24,900
Investment in real estate loans, net		$ 3,600
Number of second mortgage notes		2
Financing receivable, term		3 years 6 months
Financing receivables, interest rate		7.38%