INVESTMENT IN HOTEL PROPERTIES, NET - Schedule of sale of hotels (Details) $ in Thousands	Jun. 30, 2018 hotel Room	Apr. 30, 2017 USD ($) hotel Room	Feb. 29, 2016 USD ($) hotel	Feb. 11, 2016 USD ($) hotel	Oct. 31, 2015 USD ($) hotel
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | hotel	80
Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | hotel		23
Number of guestrooms		2,448
Aggregate sales price | $		$ 325,100
Portfolio of Hotels to HIT, Tranche One | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | hotel					10
Aggregate sales price | $					$ 150,000
Portfolio of Hotels to HIT, Tranche Two | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | hotel			6	6
Aggregate sales price | $			$ 108,300	$ 108,300
Portfolio of Hotels to HIT, Tranche Three | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hotels | hotel		7
Aggregate sales price | $		$ 66,800
Properties Held For Sale 1 | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of guestrooms	322
Properties Held For Sale 2 | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of guestrooms	470
Smyrna, TN | Hilton Garden Inn | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of guestrooms	112
Smyrna, TN | Hampton Inn & Suites | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of guestrooms	83
Phoenix, AZ | Hyatt Place | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of guestrooms	127
Fort Myers, FL | Hyatt Place | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of guestrooms	148