LEASES - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate Properties [Line Items]
Tenant income		$ 2.2	$ 1.7	$ 1.4
Operating lease weighted average discount rate		4.90%
Operating lease, cost		$ 3.3	3.6	4.0
Operating cash outflows from operating leases		$ 3.0	$ 3.6	$ 3.5
Operating lease weighted average remaining lease term		28 years 3 months
Residence Inn | Baltimore (Hunt Valley), MD
Real Estate Properties [Line Items]
Acquisitions of hotel properties	$ 4.2
Minimum
Real Estate Properties [Line Items]
Lease remaining term		1 year
Maximum
Real Estate Properties [Line Items]
Lease remaining term		79 years